Polyether-urethane foams

Details Polyether-urethane foams Polyether-urethane foams

1981-11-24

1983-02-15

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

C08G 1814

Patent

active

043742084

ABSTRACT:
A method for the production of a polyether-urethane foam includes the step of incorporating into the foam-forming reaction mixture a degradation product of a starch and/or an acetyl, hydroxypropyl or oxidized derivative of a starch. This additive can be used to substitute up to 80% by weight of the polymeric polyol on which the foam formulation is based. The foams can be rigid, semi-rigid, semi-flexible or flexible and their physical and dynamic properties compare favorably with those of foams lacking the starch additive, while the production costs of the foams are significantly lowered.

REFERENCES:
patent: 4197372 (1980-04-01), Hostettler
patent: 4237182 (1980-12-01), Fulmer et al.

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