{ "model": { "rank": 6892, "code": "thing-q146174", "model_id": "vr.tr.polypropylene", "name": "polypropylene", "purpose": "Enable an agent to recognise polypropylene, assess the condition and suitability of a particular grade or lot, and determine which processing, use and recovery actions its evidence supports.", "family": "Thing Registry", "category": "Physical world and living systems", "status": "research-draft", "kind": "thing", "plane": "PHY", "domain": "PHY.MAT", "industry": "", "version": "", "url": "/models/thing/q146174/", "tier": 2, "score": 58, "payload": { "layer": "wikidata", "aliases": [], "aliasCount": 0, "merged": 0, "knownIn": 58, "facets": null, "markers": [], "lexicalClass": "", "senseRank": null, "alsoRegisteredAs": "vr.tr.polypropylene", "source": { "dataset": "wikidata", "item": "Q146174", "url": "https://www.wikidata.org/wiki/Q146174", "license": "CC0 1.0" } }, "research": { "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-09T23:43:23Z", "providers": [ "Codex" ], "breadth": "recalled by Codex without web access - no source was read", "missingProviders": [], "pass": 2, "cost": { "grok": { "seconds": 23, "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a0888d-062d-7c82-bce5-d6f5b6fca5b9\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: polypropylene\nSense to describe: (none recorded)\nDomain code: PHY.MAT\nAlso known as: (none)\n\n\nContext for this batch of 1001 things:\n# Batch 007: 1001 r", "usd": 0, "recall": true }, "codex": { "seconds": 64.8, "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a0888d-0637-7ed0-9708-4c1a595ec6c4\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: polypropylene\nRegistry id: vr.tr.polypropylene\nPlane / domain: PHY / PHY.MAT\nRegistry definition: (none recorded)\nNames folded into this entry: (none" } } }, "metaModel": { "id": "THING-Q146174", "registryId": "vr.tr.polypropylene", "name": "polypropylene", "version": "0.1.0-research.1", "entryKind": "thing", "family": "Thing Registry", "domain": [ "PHY.MAT" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q146174/", "model": { "registry_id": "vr.tr.polypropylene", "name": "polypropylene", "purpose": "Enable an agent to recognise polypropylene, assess the condition and suitability of a particular grade or lot, and determine which processing, use and recovery actions its evidence supports.", "definition": "Polypropylene (PP) is a thermoplastic polyolefin based predominantly on polymerized propene, with repeat units -CH₂-CH(CH₃)-, whose properties depend on stereoregularity, molecular architecture, comonomer content and formulation.", "scope_statement": "This model owns polypropylene as a polymer material, including its molecular architecture, commercial grade, formulation, morphology, processing history and condition; it distinguishes the material from the products and processes that contain or transform it.", "in_scope": [ "Propylene-derived polymer identity, tacticity and documented comonomer architecture", "Homopolymer, random copolymer and impact copolymer grade distinctions", "Additives, fillers, reinforcement, contaminants and recycled content", "Thermal, rheological and mechanical behaviour under stated test conditions", "Processing history, degradation and suitability for specified service conditions", "Evidence supporting material-specific handling, application and recovery decisions" ], "out_of_scope": [ "Propylene monomer manufacture, storage and transport", "Polymerisation plant design and catalyst manufacturing processes", "Geometry, assembly and complete performance of articles made from polypropylene", "Independent models of polyethylene, elastomers, fillers and other formulation constituents", "Recycling facility design and collection-system operations" ], "distinguishing_features": [ "Establish a propylene-derived backbone with pendant methyl groups using analytical or supplier evidence; a polyolefin label alone does not distinguish polypropylene from polyethylene.", "Determine tacticity rather than assuming every polypropylene sample has the crystallinity and stiffness associated with common isotactic commercial grades.", "Distinguish homopolymer, random copolymer and impact copolymer grades through comonomer and phase evidence; the label PP does not resolve these differences.", "Separate polypropylene resin from a polypropylene-based compound by identifying fillers, reinforcement, elastomer phases and other constituents.", "Treat a resin identification mark as a sorting clue, not proof of grade, purity, formulation or application suitability." ], "characteristics": [ { "name": "Polymer and grade identity", "kind": "category", "unit_or_values": "Homopolymer, random copolymer, impact copolymer or unresolved; supplier grade and applicable chemical identifiers", "why_it_matters": "Prevents a broad polypropylene designation from substituting for the identity needed to select processing and use conditions." }, { "name": "Tacticity", "kind": "category", "unit_or_values": "Isotactic, syndiotactic, atactic or mixed; analytical method and quantified fractions where available", "why_it_matters": "Chain stereochemistry influences crystallisation and material behaviour." }, { "name": "Comonomer content and architecture", "kind": "measurement", "unit_or_values": "Comonomer identity and mass % or mol %, with sequence or phase evidence", "why_it_matters": "Composition and distribution help explain differences in toughness, stiffness and thermal response." }, { "name": "Formulation", "kind": "relation", "unit_or_values": "Linked constituent identities, functions and mass fractions", "why_it_matters": "Additives, fillers and reinforcement can determine performance, restrictions and recovery compatibility." }, { "name": "Melt mass-flow rate", "kind": "measurement", "unit_or_values": "g/10 min, with test temperature, load, method and conditioning", "why_it_matters": "Supports grade comparison and process selection only when measurement conditions are comparable." }, { "name": "Melting and crystallisation behaviour", "kind": "measurement", "unit_or_values": "°C and J/g, with thermal-analysis method, heating or cooling rate and thermal history", "why_it_matters": "Supports processing decisions and reveals morphology differences; a single universal melting point is inadequate." }, { "name": "Crystallinity", "kind": "measurement", "unit_or_values": "%, with measurement method, reference basis and correction for non-polypropylene constituents", "why_it_matters": "Helps interpret stiffness, shrinkage and changes caused by processing." }, { "name": "Density", "kind": "measurement", "unit_or_values": "kg/m³, with temperature and method; distinguish material density from bulk pellet density", "why_it_matters": "Supports material identification and sorting while accounting for formulation effects." }, { "name": "Mechanical performance", "kind": "measurement", "unit_or_values": "Modulus and strength in MPa, strain in %, impact response in method-specific units; temperature and specimen history required", "why_it_matters": "Prevents room-temperature or unmatched test results from being applied to unsuitable service conditions." }, { "name": "Degradation condition", "kind": "state", "unit_or_values": "Evidence of oxidation, embrittlement, discoloration, odour or rheological change; assessed, suspected or unknown", "why_it_matters": "Processing and environmental exposure can change suitability even when the nominal polymer identity remains unchanged." }, { "name": "Application qualification", "kind": "relation", "unit_or_values": "Grade- or lot-linked declarations and test reports, with jurisdiction, intended use, conditions and validity", "why_it_matters": "A generic polypropylene identity does not establish food-contact, medical or other application-specific acceptability." } ], "affordances": [ "Identify a sample as polypropylene and classify its grade family using traceable evidence.", "Compare candidate grades for a stated processing route and service environment.", "Define a supported processing window and identify missing trials or measurements.", "Assess whether aging or repeated processing has changed a lot's suitability.", "Route material for segregation, reprocessing or recovery according to composition and contamination evidence.", "Request the specific supplier declarations or tests needed before qualifying a proposed application." ] }, "sources": [], "structure": { "bundles": [ { "id": "polymer-identity-and-grade", "name": "Polymer identity and grade", "description": "Establish what the polypropylene designation means for the material being assessed.", "rationale": "Polypropylene encompasses architectures and formulations that cannot safely be treated as interchangeable.", "layers": [ { "id": "chain-architecture", "name": "Chain architecture", "description": "Resolve propylene-derived identity, stereochemistry and comonomer arrangement.", "findings": [ { "id": "architecture-evidence", "name": "Architecture evidence", "description": "Record evidence for the polymer family and the architectural distinctions needed to interpret its behaviour.", "questions": [ { "text": "What supplier or analytical evidence establishes polypropylene identity and its tacticity?", "kind": "definition", "id": "architecture-evidence-q01" }, { "text": "Is the material a homopolymer, random copolymer or impact copolymer, and what evidence establishes comonomer distribution or separate phases?", "kind": "boundary", "id": "architecture-evidence-q02" } ] } ] }, { "id": "grade-and-formulation", "name": "Grade and formulation", "description": "Connect the polymer identity to a commercial grade, lot and constituent inventory.", "findings": [ { "id": "traceable-compound-identity", "name": "Traceable compound identity", "description": "Distinguish base resin identity from the identity of the supplied polypropylene compound.", "questions": [ { "text": "Which supplier grade, lot and chemical identifiers apply, and do those identifiers describe the base polymer or the complete formulation?", "kind": "provenance", "id": "traceable-compound-identity-q01" }, { "text": "Which fillers, reinforcements, elastomer modifiers and additives are present, at what fractions, and which remain undisclosed?", "kind": "definition", "id": "traceable-compound-identity-q02" } ] } ] } ] }, { "id": "morphology-and-property-evidence", "name": "Morphology and property evidence", "description": "Describe polypropylene's phase structure and measured behaviour without detaching results from their conditions.", "rationale": "Tacticity, formulation and thermal history affect the properties that an agent uses to compare materials.", "layers": [ { "id": "crystalline-and-dispersed-phases", "name": "Crystalline and dispersed phases", "description": "Record crystallinity, thermal transitions and relevant multiphase structure.", "findings": [ { "id": "thermal-history-dependent-morphology", "name": "Thermal-history-dependent morphology", "description": "Associate measured morphology with specimen preparation and thermal history.", "questions": [ { "text": "What melting, crystallisation and crystallinity measurements exist, and what thermal protocol and filler corrections were used?", "kind": "measurement", "id": "thermal-history-dependent-morphology-q01" }, { "text": "What evidence identifies nucleation effects, crystal forms or dispersed elastomer phases relevant to this grade?", "kind": "measurement", "id": "thermal-history-dependent-morphology-q02" } ] } ] }, { "id": "comparable-property-results", "name": "Comparable property results", "description": "Qualify rheological and mechanical measurements before using them for selection.", "findings": [ { "id": "conditioned-property-comparison", "name": "Conditioned property comparison", "description": "Retain the test conditions needed to compare polypropylene grades or lots.", "questions": [ { "text": "What melt mass-flow rate was measured, under which temperature, load and method, and does the proposed comparison use matching conditions?", "kind": "measurement", "id": "conditioned-property-comparison-q01" }, { "text": "How do stiffness, impact response and creep vary with the relevant temperature, loading duration, specimen orientation and preparation?", "kind": "measurement", "id": "conditioned-property-comparison-q02" } ] } ] } ] }, { "id": "processing-and-transformation", "name": "Processing and transformation", "description": "Connect polypropylene grade behaviour to melt processing and the material state that processing produces.", "rationale": "A grade suitable for one conversion route may perform poorly in another, and processing changes subsequent behaviour.", "layers": [ { "id": "conversion-window", "name": "Conversion window", "description": "Establish evidence supporting a particular processing route and operating range.", "findings": [ { "id": "route-specific-processability", "name": "Route-specific processability", "description": "Assess processing suitability using grade-specific guidance and trials.", "questions": [ { "text": "What evidence supports this grade for injection moulding, extrusion, fibre spinning, film production or another proposed route?", "kind": "action", "id": "route-specific-processability-q01" }, { "text": "Which melt temperature, residence time and shear limits are supported, and what observations indicate degradation or unstable flow?", "kind": "measurement", "id": "route-specific-processability-q02" } ] } ] }, { "id": "processing-induced-state", "name": "Processing-induced state", "description": "Track changes introduced by cooling, orientation and repeated melt histories.", "findings": [ { "id": "conversion-history-effects", "name": "Conversion history effects", "description": "Connect processing history to shrinkage, directional properties and degradation evidence.", "questions": [ { "text": "How did cooling rate, drawing or annealing affect crystallinity, orientation and shrinkage in the assessed material?", "kind": "provenance", "id": "conversion-history-effects-q01" }, { "text": "After reprocessing, what changes in flow, oxidation or mechanical response require adjustment or rejection of the intended use?", "kind": "action", "id": "conversion-history-effects-q02" } ] } ] } ] }, { "id": "service-limits-and-qualification", "name": "Service limits and qualification", "description": "Determine whether a particular polypropylene material is supported for its proposed exposure and application.", "rationale": "Generic claims about polypropylene cannot establish grade-specific durability, handling requirements or application approval.", "layers": [ { "id": "exposure-and-aging", "name": "Exposure and aging", "description": "Assess temperature, radiation, chemical contact and mechanical loading together.", "findings": [ { "id": "environment-dependent-durability", "name": "Environment-dependent durability", "description": "Record evidence for durability under the actual service environment.", "questions": [ { "text": "What tests support performance under the intended heat, ultraviolet exposure, chemical contact and sustained stress?", "kind": "measurement", "id": "environment-dependent-durability-q01" }, { "text": "Which stabilisers or modifiers support that performance, and what aging indicators would trigger reassessment?", "kind": "action", "id": "environment-dependent-durability-q02" } ] } ] }, { "id": "handling-and-use-evidence", "name": "Handling and use evidence", "description": "Separate formulation-specific handling information from application-specific qualification.", "findings": [ { "id": "qualified-handling-and-application", "name": "Qualified handling and application", "description": "Attach applicable safety and use evidence to the assessed grade and physical form.", "questions": [ { "text": "What current safety documentation applies to this formulation and form, including any classifications and controls for dust, molten material or processing emissions?", "kind": "provenance", "id": "qualified-handling-and-application-q01" }, { "text": "Which declarations and tests support the intended contact conditions, sterilisation method or regulated use, and what limitations do they impose?", "kind": "boundary", "id": "qualified-handling-and-application-q02" } ] } ] } ] }, { "id": "recovery-and-secondary-material", "name": "Recovery and secondary material", "description": "Assess polypropylene recovery streams and the suitability of recovered material for another use.", "rationale": "Polymer identification alone cannot establish the composition, history or performance of recycled polypropylene.", "layers": [ { "id": "stream-identity-and-contamination", "name": "Stream identity and contamination", "description": "Resolve the composition and provenance of incoming polypropylene recovery material.", "findings": [ { "id": "recovery-stream-confidence", "name": "Recovery stream confidence", "description": "Distinguish traceable polypropylene streams from mixed or uncertain material.", "questions": [ { "text": "What evidence establishes polypropylene content and detects polyethylene, other polymers, fillers and non-polymer contamination?", "kind": "measurement", "id": "recovery-stream-confidence-q01" }, { "text": "What source history and chain-of-custody evidence support the declared recycled fraction and prior-use category?", "kind": "provenance", "id": "recovery-stream-confidence-q02" } ] } ] }, { "id": "reprocessing-and-requalification", "name": "Reprocessing and requalification", "description": "Determine what recovered polypropylene can become after assessment and treatment.", "findings": [ { "id": "secondary-grade-release", "name": "Secondary grade release", "description": "Define evidence needed to release recovered material for a specified subsequent application.", "questions": [ { "text": "Which sorting, washing, filtration, blending or restabilisation actions are supported by the observed contamination and degradation?", "kind": "action", "id": "secondary-grade-release-q01" }, { "text": "Which flow, mechanical, odour, contaminant and application-specific acceptance criteria must the resulting lot satisfy?", "kind": "action", "id": "secondary-grade-release-q02" } ] } ] } ] }, { "id": "evidence-and-external-alignment", "name": "Evidence and external alignment", "description": "What the world already says about this thing, gathered so the model can be checked against it.", "rationale": "A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.", "layers": [ { "id": "reported-evidence", "name": "Reported evidence", "description": "Findings from the breadth pass, kept separate from the structural claims.", "findings": [ { "id": "evidence-confidence-notes", "name": "Check these first", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "This is recalled knowledge, not source-verified research; confirm standard editions and current regulatory requirements.", "The listed kinds overlap: tacticity and homopolymer/copolymer architecture are separate classification dimensions.", "Property ranges describe conventional unfilled grades, not all formulations; verify grade-specific data, hazard classification and identifiers. Polypropylene decomposes rather than having a useful normal boiling point." ], "questions": [ { "id": "evidence-confidence-notes-q01", "text": "Which of these check these first hold for the sense of polypropylene this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-kinds", "name": "Kinds and varieties", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "Isotactic polypropylene", "Syndiotactic polypropylene", "Atactic polypropylene", "Polypropylene homopolymer", "Propylene random copolymers", "Heterophasic impact polypropylene copolymers" ], "questions": [ { "id": "evidence-kinds-q01", "text": "Which of these kinds and varieties hold for the sense of polypropylene this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-identifiers", "name": "Identifiers and schemes", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ { "scheme": "CAS Registry Number", "value_or_pattern": "9003-07-0", "note": "Common identifier for polypropylene; does not uniquely specify tacticity, copolymer composition, additives or commercial grade." }, { "scheme": "ISO 1043-1 plastics symbols", "value_or_pattern": "PP", "note": "Standard abbreviated designation for polypropylene." }, { "scheme": "Resin identification code", "value_or_pattern": "5", "note": "Identifies polypropylene in plastic articles; does not guarantee local recyclability." } ], "questions": [ { "id": "evidence-identifiers-q01", "text": "Which of these identifiers and schemes hold for the sense of polypropylene this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-standards-and-regulation", "name": "Standards and regulation", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "ASTM International ASTM D4101 specifies polypropylene injection and extrusion materials.", "ISO 1133-1 specifies measurement of melt mass-flow rate and melt volume-flow rate of thermoplastics.", "European Commission Regulation (EU) No 10/2011 governs plastic materials and articles intended to contact food in the European Union.", "US FDA 21 CFR 177.1520 addresses olefin polymers for specified food-contact uses." ], "questions": [ { "id": "evidence-standards-and-regulation-q01", "text": "Which of these standards and regulation hold for the sense of polypropylene this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-real-world-use", "name": "Real-world use", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "Rigid packaging, containers, caps and closures", "Films for packaging, labels and electrical capacitors", "Fibres and nonwoven fabrics for hygiene products, textiles and filtration", "Automotive components and appliance housings", "Pipes, fittings and repeatedly flexed living hinges" ], "questions": [ { "id": "evidence-real-world-use-q01", "text": "Which of these real-world use hold for the sense of polypropylene this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-measurements", "name": "Typical measurements", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ { "quantity": "Density of unfilled polypropylene", "typical_range": "0.89-0.92 at approximately room temperature", "unit": "g/cm³" }, { "quantity": "Melting temperature of predominantly isotactic homopolymer", "typical_range": "160-170; depends on structure and measurement method", "unit": "°C" }, { "quantity": "Tensile modulus of unfilled conventional grades", "typical_range": "1000-2000 at approximately room temperature", "unit": "MPa" } ], "questions": [ { "id": "evidence-measurements-q01", "text": "Which of these typical measurements hold for the sense of polypropylene this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-failure-modes-and-hazards", "name": "Failure modes and hazards", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "Combustible; burning produces smoke and hazardous decomposition products, including carbon monoxide under incomplete combustion.", "Molten polymer can cause severe thermal burns; overheating during processing releases decomposition fumes.", "Unstabilized material undergoes ultraviolet and thermal oxidative degradation, causing embrittlement and loss of strength.", "Sustained loads cause creep, and elevated temperatures can cause deformation well below melting.", "Some grades, particularly homopolymers, become susceptible to brittle impact failure at low temperatures." ], "questions": [ { "id": "evidence-failure-modes-and-hazards-q01", "text": "Which of these failure modes and hazards hold for the sense of polypropylene this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-regional-variation", "name": "Regional variation", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ "Food-contact eligibility depends on jurisdiction, formulation, intended use and applicable testing; polymer identity alone does not establish compliance.", "Collection and recycling acceptance vary locally and by product format, even for articles bearing resin identification code 5." ], "questions": [ { "id": "evidence-regional-variation-q01", "text": "Which of these regional variation hold for the sense of polypropylene this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-neighbours", "name": "Neighbouring kinds and how to tell them apart", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ { "name": "Polyethylene", "difference": "Polyethylene has an ethylene-derived -CH₂-CH₂- backbone repeat; polypropylene has pendant methyl groups on its propene-derived repeat units." }, { "name": "Propene", "difference": "Propene is the small-molecule alkene monomer; polypropylene consists of polymer chains formed from it." }, { "name": "Polyolefin", "difference": "Polyolefin is the broader polymer family that includes polypropylene and polyethylene." }, { "name": "Polypropylene compound", "difference": "A compound is a formulated material containing polypropylene plus constituents such as fillers, reinforcements, pigments or stabilizers." } ], "questions": [ { "id": "evidence-neighbours-q01", "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of polypropylene this model covers, and on what evidence?", "kind": "provenance" } ] } ] } ] } ] }, "openQuestions": [ "Does an existing Vercy world model already own polypropylene or the relevant polymer-material structure, requiring a link or extension instead of a separate publication?", "Which authoritative identity sources establish the applicable CAS, EC and PubChem mappings for polypropylene homopolymers and copolymer families without implying that one identifier covers every compound?", "Which grade families and physical forms must the first researched publication cover, including whether atactic polypropylene needs explicit treatment within this entry?", "Which primary sources provide comparable property and degradation evidence with sufficient test conditions to support processing and service decisions?", "Which jurisdictions and intended applications should anchor researched safety classifications, exposure controls, use qualifications and recycled-material requirements?" ], "statistics": { "bundles": 6, "layers": 11, "findings": 19, "questions": 29 } }, "draft": { "generator": "vr.draft.v3", "status": "draft-generated", "researched": false, "archetype": "chemical substance or material", "method": "Written from the archetype playbook - what this kind of thing needs beyond identity and provenance - and from the structure that recurred across 6,333 models already researched by two engines. Applied to this entry by rule. No source was read for this thing and no claim here is researched. This entry carries no facets of its own, so they were inferred from its domain - a guess about a whole domain applied to one thing.", "facetsInferred": true, "nextPass": "A researcher replaces this draft with a sourced specification. Treat every sentence below as a proposal to argue with.", "purpose": "Give an agent a durable, checkable way to recognise a polypropylene, record what state it is in, and decide what may be done with it.", "whatItIs": "Enable an agent to recognise polypropylene, assess the condition and suitability of a particular grade or lot, and determine which processing, use and recovery actions its evidence supports.", "characteristics": { "substance": "material", "origin": "natural", "agency": "inert", "mobility": "varies" }, "whatYouCanDoWithIt": [ "observed and measured", "consumed or used up" ], "distinguishingFeatures": [ "Described in 58 Wikipedia languages, which is a measure of how widely the thing is known, not of how important it is." ], "openQuestionsForResearch": [ "Which of the bundles below does a real task actually need, and which are ceremony?", "What does this thing have that the facets do not capture at all?", "Which neighbouring kind is most often confused with a polypropylene, and on what evidence are they told apart?" ], "whatItIsMadeOf": "matter you can touch", "physicalCharacter": [ "Mobility varies between examples.", "Does nothing on its own; everything it does, something else did to it.", "These come from the domain this entry sits in rather than from the entry itself, so treat them as a first guess about the whole domain applied to one thing." ], "whatCanBeDoneWithIt": [ "observe it, measure it, record its state", "use it up, and then need more of it" ], "howItIsRecognised": [ "Not recognisable by sight in any reliable way. Appearance varies with grade, form and additives; identification is by label, by documentation, or by assay." ], "relatedModels": [], "standing": "Described in 58 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is.", "structure": { "bundles": [ { "id": "identity-and-classification", "name": "Identity, naming and classification", "description": "How an agent tells one polypropylene from another, and a polypropylene from things that resemble it.", "rationale": "Recognition comes before every other claim. Without stable identity nothing else in the model can be trusted to be about the same thing twice.", "layers": [ { "id": "naming-and-identifiers", "name": "Names and identifiers", "description": "The names this thing goes by and the identifiers that survive translation and time.", "findings": [ { "id": "preferred-name-and-aliases", "name": "Preferred name, aliases and local names", "description": "Which name to use, which names mean the same thing, and which merely sound similar.", "questions": [ { "id": "preferred-name-and-aliases-q01", "text": "What identifies and describes the name of a polypropylene, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "preferred-name-and-aliases-q02", "text": "Who or what asserted this about the name of a polypropylene, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "preferred-name-and-aliases-q03", "text": "What may an agent decide or do once the name of a polypropylene is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] }, { "id": "stable-identifiers", "name": "Stable identifiers and external keys", "description": "Identifiers that keep pointing at this kind of thing across systems and languages.", "questions": [ { "id": "stable-identifiers-q01", "text": "What identifies and describes an identifier for a polypropylene, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "stable-identifiers-q02", "text": "Who or what asserted this about an identifier for a polypropylene, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "stable-identifiers-q03", "text": "What may an agent decide or do once an identifier for a polypropylene is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "classification-and-granularity", "name": "Classification and granularity", "description": "Where a polypropylene sits among kinds, and how finely a task needs to cut it.", "findings": [ { "id": "kind-and-parents", "name": "Kind, parents and neighbouring kinds", "description": "The classes this thing belongs to and the ones it is next to.", "questions": [ { "id": "kind-and-parents-q01", "text": "What identifies and describes the kind of a polypropylene, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "kind-and-parents-q02", "text": "Who or what asserted this about the kind of a polypropylene, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "kind-and-parents-q03", "text": "What may an agent decide or do once the kind of a polypropylene is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] }, { "id": "distinguishing-features", "name": "Distinguishing features", "description": "What separates a polypropylene from the things most often confused with it.", "questions": [ { "id": "distinguishing-features-q01", "text": "What identifies and describes what distinguishes a polypropylene, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "distinguishing-features-q02", "text": "Who or what asserted this about what distinguishes a polypropylene, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "distinguishing-features-q03", "text": "What may an agent decide or do once what distinguishes a polypropylene is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "form-and-composition", "name": "Form, composition and condition", "description": "What a polypropylene is made of, what shape and size it takes, and what state it is in.", "rationale": "A physical thing can be measured, and a model that cannot record its measurements cannot support any decision that depends on them.", "layers": [ { "id": "form-and-dimensions", "name": "Form and dimensions", "description": "Shape, size, mass and the ranges these take across examples.", "findings": [ { "id": "measurable-dimensions", "name": "Measurable dimensions and their units", "description": "The quantities worth recording and the units they are recorded in.", "questions": [ { "id": "measurable-dimensions-q01", "text": "What identifies and describes the dimensions of a polypropylene, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "measurable-dimensions-q02", "text": "Who or what asserted this about the dimensions of a polypropylene, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "measurable-dimensions-q03", "text": "What may an agent decide or do once the dimensions of a polypropylene is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "material-and-composition", "name": "Material and composition", "description": "Materials, parts and how they are put together.", "findings": [ { "id": "parts-and-materials", "name": "Parts and materials", "description": "What a polypropylene is built from and which parts are replaceable.", "questions": [ { "id": "parts-and-materials-q01", "text": "What identifies and describes the composition of a polypropylene, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "parts-and-materials-q02", "text": "Who or what asserted this about the composition of a polypropylene, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "parts-and-materials-q03", "text": "What may an agent decide or do once the composition of a polypropylene is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "condition-and-integrity", "name": "Condition and integrity", "description": "Wear, damage, health and the difference between working and broken.", "findings": [ { "id": "condition-assessment", "name": "Condition, damage and health", "description": "How the condition of a polypropylene is judged and by whom.", "questions": [ { "id": "condition-assessment-q01", "text": "What identifies and describes the condition of a polypropylene, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "condition-assessment-q02", "text": "Who or what asserted this about the condition of a polypropylene, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "condition-assessment-q03", "text": "What may an agent decide or do once the condition of a polypropylene is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "place-and-movement", "name": "Place and movement", "description": "Where a polypropylene is, how it got there and where it may go (varies).", "rationale": "A thing that can move needs its position recorded with a time, or every later claim about it is about a place it has left.", "layers": [ { "id": "location-and-placement", "name": "Location and placement", "description": "Position, containment and the reference frame the position is given in.", "findings": [ { "id": "position-and-frame", "name": "Position, container and reference frame", "description": "Where a polypropylene is, and what that position is measured against.", "questions": [ { "id": "position-and-frame-q01", "text": "What identifies and describes the location of a polypropylene, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "position-and-frame-q02", "text": "Who or what asserted this about the location of a polypropylene, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "position-and-frame-q03", "text": "What may an agent decide or do once the location of a polypropylene is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "movement-and-transfer", "name": "Movement and transfer", "description": "How a polypropylene is carried, installed or relocated.", "findings": [ { "id": "movement-events", "name": "Movement events and constraints", "description": "What counts as a movement, what records it and what limits it.", "questions": [ { "id": "movement-events-q01", "text": "What identifies and describes the movement of a polypropylene, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "movement-events-q02", "text": "Who or what asserted this about the movement of a polypropylene, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "movement-events-q03", "text": "What may an agent decide or do once the movement of a polypropylene is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "state-and-lifecycle", "name": "State and lifecycle", "description": "The states a polypropylene passes through and the events that move it between them.", "rationale": "Most decisions about a thing depend on what state it is in now, which is a claim with a time on it, not a property.", "layers": [ { "id": "lifecycle-stages", "name": "Lifecycle stages", "description": "From coming into existence to ceasing to be one of these.", "findings": [ { "id": "stages-and-transitions", "name": "Stages and transitions", "description": "The stages worth naming and what moves a polypropylene between them.", "questions": [ { "id": "stages-and-transitions-q01", "text": "What identifies and describes the lifecycle of a polypropylene, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "stages-and-transitions-q02", "text": "Who or what asserted this about the lifecycle of a polypropylene, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "stages-and-transitions-q03", "text": "What may an agent decide or do once the lifecycle of a polypropylene is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "observations-and-status", "name": "Observations and current status", "description": "What is observed about a polypropylene, how often and by whom.", "findings": [ { "id": "observation-record", "name": "Observation record", "description": "How an observation of a polypropylene is recorded so that it can be superseded rather than overwritten.", "questions": [ { "id": "observation-record-q01", "text": "What identifies and describes an observation of a polypropylene, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "observation-record-q02", "text": "Who or what asserted this about an observation of a polypropylene, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "observation-record-q03", "text": "What may an agent decide or do once an observation of a polypropylene is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "use-and-operation", "name": "Use and operation", "description": "What can be done with a polypropylene and what it takes to do it.", "rationale": "An agent that can recognise a thing but not act on it has only half a model.", "layers": [ { "id": "intended-use", "name": "Intended use and function", "description": "What a polypropylene is for, and what it is used for anyway.", "findings": [ { "id": "function-and-purpose", "name": "Function, purpose and misuse", "description": "The function a polypropylene performs and the uses that fall outside it.", "questions": [ { "id": "function-and-purpose-q01", "text": "What identifies and describes the use of a polypropylene, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "function-and-purpose-q02", "text": "Who or what asserted this about the use of a polypropylene, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "function-and-purpose-q03", "text": "What may an agent decide or do once the use of a polypropylene is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "handling-and-procedure", "name": "Handling and procedure", "description": "The steps, skills and tools involved in using a polypropylene.", "findings": [ { "id": "procedures-and-skills", "name": "Procedures, skills and required tools", "description": "What an agent needs before it can act on a polypropylene at all.", "questions": [ { "id": "procedures-and-skills-q01", "text": "What identifies and describes handling a polypropylene, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "procedures-and-skills-q02", "text": "Who or what asserted this about handling a polypropylene, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "procedures-and-skills-q03", "text": "What may an agent decide or do once handling a polypropylene is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "supply-and-consumption", "name": "Supply and consumption", "description": "Quantities, rates and what running out means.", "findings": [ { "id": "consumption-and-stock", "name": "Consumption, stock and replenishment", "description": "How much of a polypropylene there is and how fast it goes.", "questions": [ { "id": "consumption-and-stock-q01", "text": "What identifies and describes the supply of a polypropylene, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "consumption-and-stock-q02", "text": "Who or what asserted this about the supply of a polypropylene, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "consumption-and-stock-q03", "text": "What may an agent decide or do once the supply of a polypropylene is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] }, { "id": "composition-and-identity", "name": "Composition, grade and chemical identity", "description": "What polypropylene is made of and how pure the thing in hand is.", "rationale": "Grade decides what a substance may be used for, so a model that records only the name cannot support any decision about use.", "layers": [ { "id": "chemical-identity", "name": "Chemical identity", "description": "Formula, structure and the registry numbers that name it unambiguously.", "findings": [ { "id": "identity-record", "name": "Identity and registry numbers", "description": "What identifies this substance across suppliers and regulators.", "questions": [ { "id": "identity-record-q01", "text": "What formula, structure and registry identifiers name polypropylene unambiguously?", "kind": "definition" }, { "id": "identity-record-q02", "text": "Which related substances share a name in common use but not an identifier?", "kind": "boundary" } ] } ] }, { "id": "grade-and-impurities", "name": "Grade, purity and impurities", "description": "The specification a batch meets and what else is in it.", "findings": [ { "id": "specification", "name": "Specification and assay", "description": "How purity is stated and measured, and which impurities matter.", "questions": [ { "id": "specification-q01", "text": "What grades of polypropylene exist, how is purity assayed, and which impurities are limited?", "kind": "measurement" }, { "id": "specification-q02", "text": "Which use requires which grade, and what happens when a lower grade is substituted?", "kind": "action" } ] } ] } ] }, { "id": "properties-and-behaviour", "name": "Properties and behaviour", "description": "How polypropylene behaves under conditions an agent can measure or change.", "rationale": "Physical constants are the part of a substance model that transfers between contexts, and each needs its unit and its conditions.", "layers": [ { "id": "physical-constants", "name": "Physical constants", "description": "Values that hold for the pure substance, with their conditions.", "findings": [ { "id": "constants-record", "name": "Constants and conditions", "description": "The quantities worth recording and the state they apply in.", "questions": [ { "id": "constants-record-q01", "text": "What are the defining physical constants of polypropylene, in what units and under what conditions?", "kind": "measurement" }, { "id": "constants-record-q02", "text": "Which of these values change with grade or form rather than being fixed?", "kind": "boundary" } ] } ] }, { "id": "stability-and-reactivity", "name": "Stability and reactivity", "description": "What it reacts with, degrades into, and how it is stored.", "findings": [ { "id": "incompatibilities", "name": "Incompatibilities and degradation", "description": "What must not meet it, and what it becomes over time.", "questions": [ { "id": "incompatibilities-q01", "text": "What is polypropylene incompatible with, and what does it degrade into under storage?", "kind": "definition" }, { "id": "incompatibilities-q02", "text": "What storage and handling does that require, and who is competent to do it?", "kind": "action" } ] } ] } ] }, { "id": "hazard-and-regulation", "name": "Hazard classification and regulation", "description": "How polypropylene can harm, and what the law says about holding and moving it.", "rationale": "A substance model without its hazard class and its regulatory identity is unusable in exactly the situations that matter.", "layers": [ { "id": "hazard-class", "name": "Hazard classification", "description": "Classified hazards, exposure limits and protective measures.", "findings": [ { "id": "classified-hazards", "name": "Classified hazards and limits", "description": "The classification, the scheme it belongs to, and the limits set.", "questions": [ { "id": "classified-hazards-q01", "text": "How is polypropylene classified for hazard, under which scheme, and what exposure limits apply?", "kind": "definition" }, { "id": "classified-hazards-q02", "text": "What protection does handling require, and what must an agent refuse to do without it?", "kind": "action" } ] } ] }, { "id": "regulatory-identity", "name": "Regulatory identity and control", "description": "Registration, restriction and transport rules by jurisdiction.", "findings": [ { "id": "controls", "name": "Controls and jurisdiction", "description": "Where it is restricted and what the restriction attaches to.", "questions": [ { "id": "controls-q01", "text": "Which registrations, restrictions or transport rules cover polypropylene, and where?", "kind": "provenance" }, { "id": "controls-q02", "text": "Does the control attach to the substance, its concentration, or its intended use?", "kind": "boundary" } ] } ] } ] }, { "id": "provenance-and-evidence", "name": "Provenance, evidence and time", "description": "Where every claim about a polypropylene came from and when it held.", "rationale": "A claim without a source and a time cannot be superseded, only overwritten, and an agent that overwrites loses the ability to explain itself.", "layers": [ { "id": "source-and-authority", "name": "Source and authority", "description": "Who said it, on what evidence, and how strongly.", "findings": [ { "id": "claim-provenance", "name": "Claim provenance and confidence", "description": "The authority behind each claim about a polypropylene and how confident it is.", "questions": [ { "id": "claim-provenance-q01", "text": "What identifies and describes a claim about a polypropylene, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "claim-provenance-q02", "text": "Who or what asserted this about a claim about a polypropylene, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "claim-provenance-q03", "text": "What may an agent decide or do once a claim about a polypropylene is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] }, { "id": "time-and-versions", "name": "Time, versions and supersession", "description": "When a claim was true, when it was learnt, and what replaced it.", "findings": [ { "id": "validity-and-supersession", "name": "Validity period and supersession", "description": "How an old claim about a polypropylene is retired without being erased.", "questions": [ { "id": "validity-and-supersession-q01", "text": "What identifies and describes the validity of a claim about a polypropylene, and in what units or vocabulary?", "kind": "definition", "answer_data": [ "identifiers", "types and classes", "values with units", "explicit unknowns" ] }, { "id": "validity-and-supersession-q02", "text": "Who or what asserted this about the validity of a claim about a polypropylene, by which method, and when was it true?", "kind": "provenance", "answer_data": [ "authority", "method", "evidence", "event time", "knowledge time" ] }, { "id": "validity-and-supersession-q03", "text": "What may an agent decide or do once the validity of a claim about a polypropylene is known, and what must it refuse?", "kind": "action", "answer_data": [ "permitted actions", "preconditions", "refusals", "escalation" ] } ] } ] } ] } ] }, "statistics": { "bundles": 9, "layers": 20, "findings": 22, "questions": 60 } } } }