Process for producing polyester polyurethane

Details Process for producing polyester polyurethane Process for producing polyester polyurethane

1986-02-06

1987-01-27

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 81, 528 83, C08G 1814

Patent

active

046394710

ABSTRACT:
A process for producing a novel polyester polyurethane having excellent hydrolysis resistance and excellent flexibility at low temperature, which is obtained from a polyisocyanate and a polyester polyol which is obtained by reaction a dicarboxylic acid with a mixture of 1,9-nonanediol and a polyol represented by the formula ##STR1## wherein R.sup.1 denotes methyl group or ethyl group, R.sup.2 denotes hydrogen atom, methyl group, ethyl group, hydroxymethyl group or hydroxyethyl group, and n is an integer of 1 to 5, said polyester polyol having an average molecular weight of 500 to 30,000.

REFERENCES:
patent: 3853821 (1974-12-01), Sid-Ahmed et al.
patent: 4420601 (1983-12-01), Kuroda et al.

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