Imperial Chemical Industries Limited

Huntsman International LLC

Nai Wen Lin

Brian Fogg

Herbert R Gillis

Ravi R Joshi

Roland G Jaber

The disclosed invention relates to a polyurethane elastomer that has improved hydrolysis resistance. The polyurethane elastomer is made by reacting a polyol blend of an aromatic dicarboxylic acid based polyester polyol, an aliphatic dicarboxylic acid based polyester polyol, and a blowing agent. The polyol blend is reacted with an isocyanate terminated prepolymer. The aromatic dicarboxylic acid based polyester polyol is the reaction product of an aliphatic alcohol and ortho-phthalic acid. The aliphatic dicarboxylic acid based polyester polyol is the reaction product of adipic acid and glycols.

Polyurethane elastomers having improved hydrolysis resistance

The present invention relates to a process for preparing a flexible polyurethane foam from the reaction of a polyisocyanate composition prepared from the reaction of an excess of organic polyisocyanate and a polyether polyol having a high ethylene oxide content and an isocyanate reactive composition comprising a chain extending agent and a combination of a polyether polyol having a high ethylene oxide content and a random copolymer having a high ethylene oxide content, and the product prepared therefrom.

Polyurethane foam composition having improved flex fatigue

An isocyanate-reactive composition is provided which comprises:

Isocyanate-reactive compositions containing internal mold release agents

Microcellular polyurethane elastomers having nonpeelable skin surfaces having densities ranging from 0.1-1.1 gm/cm.sup.3 can be made from conventionally employed reactants using carbon dioxide gas as the sole source of blowing agent resulting from the H.sub.2 O/-NCO reaction when carried out in an admixture with nonhydratable particulate inorganic salts.

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Rochester Hills, MI, United States of America

Nai Wen Lin