Stable and storable polyester-polyether co-prepolymers

Details Stable and storable polyester-polyether co-prepolymers Stable and storable polyester-polyether co-prepolymers

1978-01-20

1980-01-08

Cockeram, H. S.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

528 66, 528 76, 528 83, 528906, C07C12504, C08G 1848

Patent

active

041828984

ABSTRACT:
Polyurethanes having improved properties are obtained from polyester-polyether co-prepolymers. These co-prepolymers are homogeneous, clear liquids of varying viscosity and can be reacted with curing agents to yield clear homogeneous elastomers of various hardness. Cast elastomers prepared from such co-prepolymers have physical properties at least as good as premium polyester urethanes currently available, and have hydrolytic stability and low temperature properties better than such premium polyester urethanes and comparable to premium polyether urethanes, with the cost being comparable to the lower cost of the conventional polyester systems.

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