poly(tetramethylene glycol)

polymer

Poly(tetramethylene glycol) (PTMG) is a linear polyether diol—a type of soft-segment polymer synthesized from tetrahydrofuran (THF) monomers—commonly used as a building block in polyurethane and elastomer formulations. It provides flexibility and elasticity to composite materials by serving as the soft phase in segmented polymers, enabling engineers to tune mechanical properties for applications requiring both resilience and strain tolerance. PTMG is valued in industrial elastomers, adhesives, and coatings where the balance between stiffness and damping is critical, and competes with polyethylene glycol (PEG) and polypropylene glycol (PPG) primarily on the basis of its tunable glass transition behavior and compatibility in polyurethane chemistry.

polyurethane elastomersflexible foam formulationsindustrial adhesives and sealantsthermoplastic elastomers (TPE)coating and paint additivessoft-segment polymer chemistry

Compliance & Regulations

?UL 94?Conflict Free?RoHS?REACH?TSCA?Prop 65
Units:
siimperial
PropertyValueUnitConditionsSource
Glass Transition Temperature(Tg)
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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.