Thermoplastic polyurethanes with high glass transition temperatu

Details Thermoplastic polyurethanes with high glass transition temperatu Thermoplastic polyurethanes with high glass transition temperatu

1987-12-17

1989-04-18

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521173, 528 85, C08G 1828

Patent

active

048228273

ABSTRACT:
Disclosed are novel high flexural modulus polyurethane plastics wherein a polyisocyanate and a particular combination of extenders including cycloalkane diol are reacted optionally in the presence of a minor proportion of high molecular weight polyol.
The polymers have outstanding resistance to high temperatures thereby expanding their utilities into higher temperature end-use environments than related prior art materials. Certain members of these new polymers are also possessed of outstanding optical clarity which thereby provides a combination of properties heretofore not available in a polyurethane. These polymers are easily melt-fabricated notwithstanding their inherent high temperature properties.

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patent: 4101529 (1978-07-01), Ammons
patent: 4261946 (1981-04-01), Goyert et al.
patent: 4376834 (1983-03-01), Goldwasser et al.
patent: 4393186 (1983-07-01), Damico et al.
patent: 4567236 (1986-01-01), Goldwasser et al.

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