American Cyanamid Company

Samuel Kaizerman

Eugene Y Chang

Ajaib Singh

Robert Saxon

Romeo Raymond Aloia

A polyurethane polymer stabilized against the deteriorative effects of ultraviolet light and nitrogen oxides is provided comprising the polymer combined with a stabilizing amount of an oxime of an aliphatic or cycloaliphatic ketone.

Polyurethane compositions stabilized with ketoximes

A composition of matter is provided comprising a polyurethane latex and a polymer of at least one vinyl monomer, said polymer having been obtained by free radical polymerization of said monomer in the presence of the latex and being characterized as a hard, resinous material at temperatures below about 60.degree. C.

Polyurethane latices modified by a vinyl polymer

A polyurethane polymer stabilized against the deteriorative effects of ultraviolet light and nitrogen oxides is provided comprising the polymer combined with a stabilizing amount of an aminoplast resin.

Polyurethanes stabilized against ultraviolet light and nitrogen oxide

A polyurethane polymer stabilized against the deteriorative effects of ultraviolet light and nitrogen oxides which comprises a polyurethane polymer and a stabilizing amount of an aliphatic or cycloaliphatic monoisocyanate or diisocyanate, said polyurethane polymer comprising an isocyanate terminated prepolymer obtained by reacting a polyether or a polyester with an excess of an aromatic diisocyanate, forming an emulsion thereof and subsequently chain-extending the prepolymer with water.

A storage stable polyester based polyurethane composition is provided which contains from about 0.05 to 0.75 percent by weight of an organic epoxide compound which has a molecular weight of not less than 60.

Stabilization of polyester urethanes using organic epoxides

An improved process for preparing polyformals is provided which comprises condensing an aliphatic diol, in which the hydroxyl groups are separated by at least four carbon atoms, with an essentially stoichiometric amount of formaldehyde in the presence of a Bronsted acid catalyst and contacting the condensation product with an organic epoxide in an amount sufficient to react with the residue of said catalyst.

Process for preparing polyformals in the presence of an organic epoxide

Copolymers of ethylene and vinyl acetate which contain additionally activated halogen atoms as sites for sulfur vulcanization, and the sulfur vulcanized elastomer obtained therefrom.

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Somerville, NJ, United States of America

Samuel Kaizerman