E.i. Dupont De Nemours and Company

Clifford H Strolle

Eugene G Sommerfeld

Stephen L Cluff

James E Coughlin

Joseph A Antonelli

Robert C Nahas

Joseph E McLaughlin

Andrew P Stamegna

Glenn D Thornley

Jeffery W Johnson

Andrew F Rutkiewic

Robert D Prottas

Robert D Breazeale

An improved waterbased coating composition containing about 10-50% by weight of film forming binder and pigment in a pigment to binder weight ratio of about 1/100 to 200/100 dispersed in an aqueous carrier and having a pH of about 7-10; wherein the improvement used in the composition is a acrylourethane pigment dispersing polymer in an amount of about 0.5-10% by weight, based on the weight of the coating composition; the acrylourethane pigment dispersing polymer is composed of

Waterborne acrylourethane pigment dispersant polymer

Crosslinked polymer microparticles that have a particle size of about 0.1-5 microns of polymerized monomers of styrene, alkyl methacrylate having 1-12 carbons in the alkyl group, alkyl acrylate having 1-12 carbon atoms in the alkyl group and mixtures thereof, about 0.1-5% by weight of a crosslinking monomer of an alkylene glycol dimethacrylate or diacrylate each having 1-8 carbon atoms in the alkyl group and about 0.1-5% by weight of allyl methacrylate or allyl acrylate; said polymer having a weight average molecular weight of about 500,000 to 5,000,000; polymeric chains are grafted onto the polymer microparticles; the microparticles are useful as additives for coating compositions to control rheology and in particular for metallic pigment flake and sag control.

Crosslinked polymer microparticle

A process for curing a coating composition with a vaporous amine catalyst, wherein the composition has as the binder A. an acrylic polymer containing hydroxyl groups and amine containing groups and has a weight average molecular weight of about 2,000-50,000 and

Process for curing a coating composition of an acrylic polymer and a

The ungelled reaction product of an acrylic prepolymer, a diol and a diisocyanate, reacted in the presence of a small amount of a monoalcohol to prevent gelling, is an acrylourethane polymer which may be acid modified and is useful in high solids coating compositions.

Acrylourethane reaction product

A coating composition based on a binder comprising a major portion of acrylic resin and a minor portion of polyester oligomer, suitable for application to metal and non-metal substrates.

Coating composition of polyester oligomer and acrylic binder

Blends of acrylic copolymer and polyester urethane provide resin suitable for use as enamel coatings which, when cured, exhibit both hardness and flexibility.

Flexible coating compositions

A coating composition that can be cured with a vaporous amine catalyst, cured by baking at elevated temperatures or can be cured at ambient temperatures which has as the binder

Amine vapor curable coating composition of an acrylic polymer and a

Acrylic polymers prepared from hydroxy alkyl esters of acrylic or methacrylic acid, glycidic monomer and ethylenically unsaturated monomer, as well as enamels based on mixtures of such polymers and diglycidyl esters of dibasic acids.

Internally crosslinkable acrylic polymers and diglycidyl esters of

Polyesters with oxazoline units, especially useful as additives to promote adhesion in crosslinked enamels.

Oxazoline polyester oligomers

Disclosed are adhesive systems and adhesives formed from (A) hydroxyl-terminated, preferably branched, polyols containing adipic acid, (B) isocyanate-capped, polyol-based urethanes also containing adipic acid and (C) polyisocyanate cross-linking agents.

Ternary adhesive systems containing a polyester polyol, an

Disclosed are laminates and their preparation with adhesives formed from (A) hydroxyl-terminated, preferably branched, polyols, (B) isocyanate-capped, polyol-based urethanes and (C) polyisocyanate crosslinking agents.

Laminates from an adhesive formed by a system containing an

Air-drying resins such as acrylate- or methacrylate-acid drying-oil resins and alkyds can be blended with up to 70% by weight of the combined weights of a vinyl oxazoline ester as a reactive diluent. In an organic solvent, the blend produces a suspension or solution which has a lower viscosity than a suspension or solution of resin alone but with the same percentage of solids. When applied to a substrate, the blend dries in air to a good protective and ornamental coating. The oxazoline ester can be combined with up to about twice its weight of certain melamine condensates.

Air-drying high-solids coating compositions containing vinyl oxazoline

Disclosed are adhesive systems and adhesives formed from (A) hydroxyl-terminated, preferably branched, polyols, (B) isocyanate-capped, polyol-based urethanes and (C) polyisocyanate crosslinking agents. In their preferred embodiments, they are applicable by direct gravure procedures and are useful in boil-in-bag technology.

Ternary adhesive systems

A thermosetting coating composition, useful as an automotive finish, has film-forming constituents of a low molecular weight hydroxyl-functional acrylic copolymer, a low molecular weight hydroxyl-functional polyester based on branched-chain glycols, and an aminoplast resin. The composition can be applied at environmentally-acceptable solids levels and cured at commercially acceptable temperatures to form a durable film.

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Springfield, PA, United States of America

Clifford H Strolle