Foam stabilizing additive and polyurethane foam prepared in the

Details Foam stabilizing additive and polyurethane foam prepared in the Foam stabilizing additive and polyurethane foam prepared in the

1992-06-15

1994-05-10

Kight, III, John

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521117, 521132, 521163, 521170, 521172, 521173, 521174, 521176, C08J 908, C08K 501

Patent

active

053107667

ABSTRACT:
This invention relates to a polyurethane foam stabilizing additive that comprises from about 10 to about 50 weight percent a hydrocarbon oil, and in from about 90 to about 50 weight percent a polyester polyol which is a solid at room temperature. Use of the additive in a polyurethane foaming process provides for improved dimensional stability of the resulting foam. The additive is especially of value when preparing water blown polyether polyol-based polyurethane foam useful, for example, in sealant applications.

REFERENCES:
patent: 3846355 (1974-11-01), Mayer
patent: 3923926 (1975-12-01), Harada et al.
patent: 3957753 (1976-05-01), Hostettler et al.
patent: 4264743 (1981-04-01), Maruyama et al.
patent: 4302551 (1981-11-01), Horn et al.
patent: 4798851 (1989-01-01), Werner et al.
patent: 4801623 (1989-01-01), Hess et al.
patent: 5104904 (1992-04-01), Glynn et al.

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