Polytetramethylene ether glycol (PTMEG) is a linear polyether diol with hydroxyl groups at both chain ends. The ~2000 g/mol grade is a soft-segment building block for high-performance polyurethanes, valued for the resilience and abrasion resistance it builds into cast elastomers, thermoplastic polyurethane and spandex fiber
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Soft-segment polyether diol for cast polyurethane elastomers and TPU
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Higher-MW grade for softer, more extensible elastomers and spandex fiber
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Imparts resilience, abrasion resistance and hydrolytic stability to PU systems
Safety & Handling
Full SDS available on request
A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.
PTMEGPTMGPoly(tetramethylene oxide)PTMOPolyoxytetramethylene glycolComparable to Terathane 2000Comparable to PolyTHF 2000
Full Description
PTMEG reacts with di-isocyanates to form the flexible soft segment of a polyurethane, and the choice of molecular weight tunes the final mechanical balance. The ~2000 grade sits toward the higher-MW end, giving softer, more extensible elastomers and the elongation that spandex and dynamic-flex parts rely on. Beyond elastomers and fiber, PTMEG-based polyurethanes are chosen where parts must survive repeated flexing, abrasion and damp service, since the polyether backbone resists hydrolysis better than many polyester polyols. It is a clear-to-waxy material that is warmed and metered into prepolymer or one-shot systems
Disclaimer. Information on this page — including properties, identifiers, hazard, transport (DOT/UN) and tariff (HS) classifications, and applications — is provided for general reference and is compiled from authoritative public sources (e.g. PubChem/ECHA, 49 CFR 172.101, the Harmonized Tariff Schedule). Values are typical and are not a guaranteed specification; the Certificate of Analysis (CoA) for the lot purchased governs. Products are sold for industrial and professional use only. Nothing here is a medical, health, or efficacy claim or advice. Always consult the current Safety Data Sheet (SDS) before handling, storage, transport or disposal, and confirm regulatory status, classification and suitability for your application and jurisdiction. Hazard, transport and tariff classifications must be verified for your specific shipment. RawSource makes no warranty, express or implied, and assumes no liability for use of this information. Trademarks. Third-party trademarks and brand names are the property of their respective owners; any reference is nominative — used only to identify a comparable product — and does not imply affiliation with, sponsorship by, or endorsement by the trademark owner.
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