Dimensional stabilizing, cell opening additives for polyurethane

Details Dimensional stabilizing, cell opening additives for polyurethane Dimensional stabilizing, cell opening additives for polyurethane

1999-06-23

2000-04-04

Acquah, Samuel A.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521138, 521155, 521157, 521159, 521180, 528 65, 528 66, 528 83, C08G 1800

Patent

active

060462493

ABSTRACT:
A method for preparing a polyurethane flexible or rigid foam by reacting an organic polyisocyanate with a polyol in the presence of urethane catalyst, water as a blowing agent, optionally a silicone surfactant, and a cell opener characterized in that the cell opener comprises the reaction product of a C1-C20 hydrocarbyl group-containing organic acid anhydride and a substituted phenol which may be alkoxylated or an alkoxylated primary alcohol, optionally reacted in the presence of a tertiary amine urethane catalyst.

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patent: 4751253 (1988-06-01), Tylends
patent: 4785027 (1988-11-01), Brasington et al.
patent: 4929646 (1990-05-01), Nichols et al.
patent: 5179131 (1993-01-01), Wujcik et al.
patent: 5489618 (1996-02-01), Gerkin

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