Multistage process for producing thermoplastic polyurethane elas

Details Multistage process for producing thermoplastic polyurethane elas Multistage process for producing thermoplastic polyurethane elas

1993-05-18

1996-08-13

Seidleck, James J.

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...

528 61, 528 65, 528 76, 528 77, 528 80, 528 81, 528 83, 528 85, 528 59, C08G 1810, C08G 1840, C08G 1830

Patent

active

055457070

ABSTRACT:
Thermoplastically processable polyurethane elastomers are prepared by A) mixing one or more substantially linear polyols with a diisocyanate, B) reacting the resultant mixture substantially completely in a reactor at temperatures of >100.degree. C. to form a prepolymer, C) mixing the prepolymer with low molecular weight chain extenders, D) applying the reaction mixture prepared in stage C) to a support and allowing the mixture to react thereon to solidification.

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