Atlantic Richfield Company

Charles J Kremer

Donald H Russell

Alfred E Borchert

Albert C Condo

Donald S Brown

This invention relates to coating compositions containing a wax, an acid component and a polyvinyl alkyl ether having a molecular weight in the range of from 1,000 to 15,000. Most preferably, the polyvinyl alkyl ether is either polyvinyl methyl ether or polyvinyl isobutyl ether. The coatings made from these compositions have highly improved adhesive properties toward the substrate upon which they are deposited. This is true over a wide range of temperatures and especially in the very low temperature range. They can be utilized as hot melt coatings for items such as paperboard and corrugated board. They are especially effective as coatings for polymeric foams, particularly polyurethane foams.

Coated closed cell foam article

A modified polyester polyol prepolymer having a hydroxyl functionality of between 2 and 3 is produced by reacting a cyclic nitrile carbonate such as adipodi(nitrile carbonate) with a polyester polyol having hydroxyl numbers of about 50 to about 450. The product has a viscosity preferably in the range of about 15,000 to 30,000 centipoise at about 25.degree. C. Novel urethane foams are prepared from the modified polyester polyol prepolymers by reacting the same with aromatic isocyanates to form urethane foams having improved stability to ultraviolet discoloration and improved hydrolytic stability.

Production of polyurethane foams from modified polyester polyol

Compounds suitable for use in waving human hair comprised of a film-forming resin containing pendant hydroxyl, amine, and/or thiol groups; a cyclic nitrile carbonate of the formula ##STR1## WHEREIN R is an organic radical having 1 to about 200,000 carbon atoms, X is ##STR2## and n is at least 2; and a flexibilizing adhesion promoter; and optionally a catalyst. The composition is preferably dissolved in a non-aqueous solvent. Hair is waved by contacting the hair with the composition and drying it at room or elevated temperatures.

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Brookhaven, PA, United States of America

Charles J Kremer