PTMG

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.