PTMG

polymer

PTMG (polytetramethylene glycol) is a linear polyether polymer that combines soft-segment flexibility with processing versatility, commonly used as a raw material or intermediate in polyurethane production rather than as a standalone engineering plastic. It is valued in industries requiring elastomeric or flexible coating applications—particularly automotive sealing systems, flexible foam cushioning, and elastomer manufacturing—where its ability to be readily converted into polyurethanes with tunable stiffness and damping characteristics makes it preferable to rigid thermoplastics. Engineers select PTMG-based polyurethanes over commodity rubbers or rigid plastics when applications demand a combination of flexibility, chemical resistance, and ease of processing into complex geometries.

polyurethane elastomersflexible foam seatingautomotive seals and gasketscoatings and adhesivesspandex fiber productionvibration damping components

Compliance & Regulations

?UL 94?Conflict Free?RoHS?REACH?TSCA?Prop 65
Units:
siimperial
PropertyValueUnitConditionsSource
Elongation at Break(εf)
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-——
Ultimate Tensile Strength(σUTS)
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ksi——
Young's Modulus(E)
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ksi——
Verified Unverified Low confidence (<80%) Link to source
PropertyValueUnitConditionsSource
Glass Transition Temperature(Tg)
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°F——
Melting Point / Solidus(Tm)
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°F——
Maximum Service Temperature(Tmax)
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°F——
Verified Unverified Low confidence (<80%) Link to source

Regulatory Screening

Environmental

Safety & Biocompatibility

RoHS, REACH, and Prop 65 statuses are validated against official substance lists (ECHA SVHC Candidate List, OEHHA Prop 65, RoHS Annex II). Other regulations are estimated from composition and material classification. All screening is a starting point for due diligence — always verify with your supplier before making compliance decisions.