Thermoplastic polyurethane and process for the preparation there

Details Thermoplastic polyurethane and process for the preparation there Thermoplastic polyurethane and process for the preparation there

1979-04-09

1980-03-11

Cockeram, H. S.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

427246, 428310, 428320, 521163, 521164, 528 79, 528906, 528902, C08G 1814, C08G 1832, C08G 1865

Patent

active

041929284

ABSTRACT:
A thermoplastic polyurethane comprising the polymerization product of a long-chain diol, a low molecular weight chain-extender, an organic diisocyanate and a specific diol compound. The specific diol compound is represented by the following formula: ##STR1## wherein R.sub.1 and R.sub.2 are hydrogen or an alkyl radical having from 1 to 3 carbon atoms, R.sub.3 and R.sub.4 are an alkylene radical having from 2 to 4 carbon atoms, Y is a bivalent radical selected from the group consisting of ##STR2## wherein x is hydrogen, chlorine, bromine or a methyl radical, m and n are positive integers satisfying the formula 2.ltoreq.m+n.ltoreq.10

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