Extrudable thermoplastic elastomeric urea-extended polyurethane

Details Extrudable thermoplastic elastomeric urea-extended polyurethane Extrudable thermoplastic elastomeric urea-extended polyurethane

1997-02-03

1998-09-22

Sergent, Rabon

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From reactant having at least one -n=c=x group as well as...

2641761, 2642091, 26421112, 264563, 524230, 524233, 524448, 524726, 524728, 524789, 524791, 528 61, 528 67, 528 76, 528 80, 528 83, C08G 1832, C08G 1842, C08G 1849, B28B 320

Patent

active

058115064

ABSTRACT:
An extrudable urea-extended thermoplastic polyurethane elastomer is formed from at least one aliphatic diisocyanate, at least one polyester glycol or polyether glycol, and at least one diamine curing agent. At least one second diamine curing agent and/or at least one extrusion processing aid may be included. The polyurethane has high-temperature-resistance and is thus extrudable at high temperatures. The polyurethane is also strong and durable. The polyurethane can be liquid-cast, injection-molded, transfer-molded, sprayed, and extruded without changing either the chemistry or stoichiometry of the polyurethane. The polyurethane may be used for making vehicle air bags or other any application for thermoplastic urethanes which requires increased thermal stability.

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