Basf Corporation

Anthony W Tantillo

Thirumurti L Narayan

John Robert Stoll

William G Conger

Solid isocyanate-terminated prepolymer powders useful in preparation of films, coatings, and one-component adhesives are prepared by reacting a low molecular weight di- or polyisocyanate with a glycol mixture in a solvent in which the isocyanate is soluble but the reaction product is not.

Solid isocyanate derivatives useful in one component polyurethane

Fatty prepolymers and fatty modidified organic polyisocyantes are provided as internal mold release agents useful in Reaction Injection Molded (RIM) parts. A terminal fatty chain-containing molecule having a primary or secondary hydroxyl group, a primary or secondary amine group, an epoxide group, or an isocyanate group is reacted with an organic aromatic polyisocyanate to yield a fatty prepolymer having a urethane linkage, a urea linkage, or an oxazolidinone linkage; or to yield a fatty modified polyisocyanate having an allophanate linkage, a biuret linkage, or a carbodiimide-uretonimine linkage. The terminal chain on the molecule contains at least 8 branched or unbranched, saturated or unsaturated, hydrogen substituted aliphatic carbon atoms in succession or at least 5 branched or unbranched, aliphatic or cycloaliphatic perfluorinated atoms in succession.

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Troy, MI, United States of America

Anthony W Tantillo