Mobay Chemical Corporation

Bayer Corporation

Miles Inc.

John F Szabat

Steven L Schilling

Robert P Yeater

Harold R Parsons

Gert F Baumann

Joseph M Sutej

Gaeta L Copeland

Herman P Doerge

Edward E Ball

Charles E Mortimer

Jeanne L Beaumont

Phil M Soland

A polyisocyanate having an acid value of at least 0.01% HCl is used to produce polyisocyanate, polyisocyanurate and polyurethane urea foams with an HCFC blowing agent. The use of such a polyisocyanate is advantageous because the polyisocyanate does not cause significant decomposition of the HCFC blowing agent.

Foam-forming mixtures with decreased decomposition of hydrohalocarbon

An organic acid having at least two carboxylic acid groups, no tertiary amino groups and a pK.sub.a of up to 3.1 is added to an HCFC blowing agent or to a composition, preferably an isocyanate-reactive composition, in which an HCFC blowing agent is present to reduce decomposition of the HCFC blowing agent. The resultant compositions are useful in the production of polyisocyanurate, polyurethane and/or polyurea foams.

The present invention is directed to the discovery that a specific combination of HCFC-141b, certain perfluorinated compounds and carbon black significantly improve the insulating capacity of isocyanate-based foams when compared to foams made without all three ingredients.

Low thermal conductivity foam

The present invention is directed to a combustion modified flexible polyurethane foam produced by reacting:

Combustion modified flexible polyurethane foam

The instant invention is directed to a novel catalyst system for the production of polyurethane resin, and the method of use of such catalyst system. The catalyst systems of the instant invention broadly comprise

Novel catalyst system for polyurethane foams

Catalyst system for polyurethane foams

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Pittsburgh, PA, United States of America

John F Szabat