Stabilization of reactivity of polyester polyol based polyuretha

Details Stabilization of reactivity of polyester polyol based polyuretha Stabilization of reactivity of polyester polyol based polyuretha

1987-03-12

1988-07-19

Kight, John

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521130, 25218224, C08G 1830

Patent

active

047586052

ABSTRACT:
Disclosed are novel polyol blends comprising a polyester polyol, a tertiary amine polyurethane catalyst, and an organic carboxylic acid having a dissociation constant less than 1.times.10.sup.-3 and which does not readily decarboxylate wherein the carboxylic acid is present in the proportions that its equivalent weight is at least equal to the equivalent weight of the tertiary amine. Also disclosed is the method for stabilizing blends of the above polyester polyols and tertiary amines by adding the carboxylic acid in at least equal equivalent weight to the amine present in the blend. Both polyurethane and polyurethane-polyisocyanurate foams prepared from the novel blends are also disclosed.

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Reaction Instability of Rigid Foam Systems Containing Polyester Polyols; De Guiseppi, D. T.; CPR Div., Dow Chemical, U.S.A., Torrance, Calif. 90509.

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