American Cyanamid Company

Other

Eugene Y Chang

Samuel Kaizerman

Robert Saxon

Rudolf Adolf Behrens

Tsi Tieh Li

A catalyst composition is disclosed for polyurethane production by reaction between aliphatic hydroxyl-containing compounds and secondary or tertiary aliphatic isocyanate group-containing compounds, comprising (i) 1,8-diazabicyclo(5.4.0)-undecene-7, or a salt thereof; (ii) an organic tin compound and, optionally, (iii) an organic lead compound.

Catalyst systems for polyurethane compositions

Polyurethane compositions based on aliphatic diisocyanates, or prepolymers of aliphatic diisocyanates, and blends of ethylene oxide capped polypropylene glycol polyethers of at least tri-functionality with ethylene oxide capped polypropylene glycol polyethers of di-functionality are disclosed. Suitable aliphatic diisocyanates comprise tertiary aralkyl isocyanates with a preferred isocyanate being para-tetramethylxylene diisocyanate (p-TMXDI). The compositions disclosed include reaction injection molding compositions.

Polyurethanes based on polyether blends

Polyurethane elastomer compositions, having a compression set less than or equal to about 40% are disclosed. These polyurethane elastomer compositions comprise the reaction product of:

P-TMXDI Polyurethane elastomers with good compression set properties

New and improved storage stable, one package, heat curable polyurethane adhesive compositions are disclosed which comprise:

Storage stable, one-package heat curable polyurethane adhesive

A heat-curable polyurethane composition, comprising:

One-component polyurethane adhesive compositions

Polyacrylate-containing elastomers, having improved tensile strength and hardness upon vulcanization, comprise blends containing about 35 to 65 percent, by weight, of a sulfur-vulcanizable graft elastomer having a major proportion of ethyl acrylate and a minor proportion of an ethylenically unsaturated comonomer which contains a cure-site for sulfur vulcanization, grafted onto an ethylene-vinyl acetate copolymer, and about 65 to 35 percent, by weight, of a sulfur-vulcanizable polyacrylate elastomer.

Sulfur-vulcanizable blends of ethylene-vinyl acetate copolymer

A curative system for castable polyurethanes is disclosed which consists essentially of a mixture of p-di(hydroxyethoxy)benzene and 1,2-bis(2-aminophenylthio)ethane and a method of use therefor.

Curative for castable polyurethanes

Vulcanizable compositions comprising a polar, water-soluble backbone polymer having a copolymer of an acrylic acid ester and a curing-site containing comonomer grafted thereon and a method for the production thereof, are disclosed.

Acrylate copolymers grafted onto a polar, water-soluble backbone 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 oxime of an aliphatic or cycloaliphatic ketone.

Polyurethane compositions stabilized with ketoximes

Copolymers of ethylene and vinyl acetate having grafted thereon a mixture of a major proportion of one or more acrylic acid esters and a minor proportion of an ethylenically unsaturated comonomer containing a cure-site for sulfur vulcanization, and the vulcanized elastomers obtained therefrom, are disclosed.

Sulfur vulcanizable ethylene-vinyl acetate copolymer elastomers

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.

An improved process for the preparation of linear, high molecular weight elastomeric polymers of thiodiethanol is disclosed wherein the catalyst system is a mixture of phosphorous acid and manganese, iron, cobalt, nickel, copper or zinc sulfate.

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Bridgewater, NJ, United States of America

Eugene Y Chang