Ppg Industries Ohio, Inc.

Arch Specialty Chemicals, Inc.

Daniela White

James B O'Dwyer

Simion Coca

Kurt Gordon Olson

Paul H Lamers

Karen A Barkac

Roxalana Lee Martin

Kurt A Humbert

James R Franks

Dennis A Simpson

John R Schneider

Lawrence G Anderson

Thomas R Hockswender

Anthony Michael Chasser

Andrew J Blakeney

Richard J Sadvary

Michael Allen Mayo

William H Retsch, Jr

Shiryn Tyebjee

Joseph M Carney

Michael L White

Thomas Steinhausler

Allen H Gabor

Laura E Poindexter

Ulrich Schaedeli

A controlled free radical polymerization process, which includes the steps of: adding a monofunctional iniferter compound to an oxygen-free solvent; heating the solution to a temperature sufficient to allow the iniferter compound to form two carbon centered radical residues; adding a first monomer composition comprising one or more monomers to the solution containing the radical containing residues; polymerizing the first monomer composition to form a quasi-living polymer; and optionally polymerizing a second monomer composition comprising one or more monomers, which are different than the first monomer composition. The resulting non-random copolymer having the general formula:&#x3c6;-[-A-B-]-&#x3c6;where A and B are different compositions of ethylenically unsaturated monomers; p is an integer from 1 to 1,000; s is an integer from 0 to 1,000; t is an integer from 1 to 100; and &#x3c6; is a residue from the iniferter.

Synthesis of vinyl polymers by controlled radical polymerization

Powder coating compositions having improved mar and scratch resistance are disclosed. The coatings generally comprise one or more particles that have been modified to render the particles more surface active. The improved resistance is achieved without affecting the appearance or mechanical performance of the coatings. Methods for using the coatings, and the substrates coated therewith, are also disclosed.

Coating compositions with modified particles and methods of using the same

A controlled free radical polymerization process, which includes the steps of: adding a monofunctional iniferter compound to an oxygen-free solvent; heating the solution to a temperature sufficient to allow the iniferter compound to form two carbon centered radical residues; adding a first monomer composition comprising one or more monomers to the solution containing the radical containing residues; polymerizing the first monomer composition to form a quasi-living polymer; and optionally polymerizing a second monomer composition comprising one or more monomers, which are different than the first monomer composition. The resulting non-random copolymer having the general formula:&#x3c6;-[&#x2014;A&#x2014;B&#x2014;]-&#x3c6;where A and B are different compositions of ethylenically unsaturated monomers; p is an integer from 1 to 1,000; s is an integer from 0 to 1,000; t is an integer from 1 to 100; and &#x3c6; is a residue from the iniferter.

An additive for a coating composition is disclosed. The additive comprises particles dispersed in a siloxane compound. When the additive is incorporated into a coating composition, the coating composition demonstrates improved mar and scratch performance. The particles can be reacted with a compound comprising a surface-active moiety prior to dispersion in the siloxane.

Coating composition having improved mar and scratch properties

Liquid coating compositions having improved mar and scratch resistance are disclosed. The coatings generally comprise one or more particles that have been modified to render the particles more surface active. The improved resistance is achieved without affecting the appearance or mechanical performance of the coatings. Methods for using the coatings, and the substrates coated therewith, are also disclosed.

Liquid coating of film-forming resin and particles chemically modified to lower surface tension

A thermosetting composition comprising a co-reactable solid, particulate mixture of (a) beta-hydroxyalkylamide crosslinking agent, e.g., bis(N,N-di-2-hydroxyethyl)adipamide, and (b) polycarboxylic acid functional polymer, is described. The polycarboxylic acid functional polymer is prepared by atom transfer radical polymerization and has well defined polymer chain architecture and polydispersity index of less than 2.5. The thermosetting compositions of the present invention have utility as powder coatings compositions.

Thermosetting compositions containing carboxylic acid functional polymers prepared by atom transfer radical polymerization

Pigment dispersions containing dispersants prepared by controlled radical polymerization having hydrophilic and hydrophobic segments

Thermosetting compositions containing hydroxyl-functional polymers prepared using atom transfer radical polymerization

A thermosetting composition comprising a co-reactable solid, particulate mixture of (a) capped polyisocyanate crosslinking agent, e.g., a trimer of 1-isocyanato-3,3,5 -trimethyl-5-isocyanatomethylcyclohexane capped with e-caprolactam or 1H-2,5-dimethyl pyrazole, and (b) hydroxy functional polymer, is described. The hydroxy functional polymer is prepared by atom transfer radical polymerization and has well defined polymer chain architecture and polydispersity index of less than 2.5. The thermosetting compositions of the present invention have utility as powder coatings compositions.

Thermosetting compositions containing hydroxy functional polymers prepared by atom transfer radical polymerization

A multi-component composite coating composition comprising a base coat deposited from a pigmented film-forming composition and a transparent top coat applied over the base coat in which the base coat is a thermosetting composition comprising a co-reactable solid, particulate mixture of (i) an epoxy functional polymer containing at least one of the polymer chain structures -&lsqb;(M) -(G) &rsqb; or -&lsqb;(G) -(M) &rsqb; wherein M is an oxirane-free residue of at least one ethylenically unsaturated monomer, G is a glycidyl-functional ethylenically unsaturated monomer, p and q each independently has a value of 0 to typically less than 100, and x has a value of at least to typically less than 100, the total value of p, q and x selected such that said epoxy functional polymer has a number average molecular weight of at least 250, and (ii) a co-reactant having functional groups reactive with the epoxy groups of (i). The epoxy functional polymer is prepared by atom transfer radical polymerization and has a polydispersity index of less than 2.5.

Thermosetting compositions containing epoxy functional polymers prepared by atom transfer radical polymerization

A thermosetting composition comprising a co-reactable solid, particulate mixture of (a) polycarboxylic acid functional polymer, and (b) epoxide functional crosslinking agent having at least two epoxide groups, e.g., triglycidyl isocyanurate (TGIC), is described. The polycarboxylic acid functional polymer is prepared by atom transfer radical polymerization and has well defined polymer chain architecture and polydispersity index of less than 2.0. The thermosetting compositions of the present invention have utility as powder coatings compositions.

Coating substrate with atom transfer radical polymerized carboxyl polymer and polyepoxide

A thermosetting composition comprising a co-reactable solid, particulate mixture of (a) capped polyisocyanate crosslinking agent, e.g., a trimer of 1-isocyanato-3,3,5-trimethyl-5-isocyanatomethylcyclohexane capped with e-caprolactam or 1H-2,5-dimethyl pyrazole, and (b) hydroxy functional polymer, is described. The hydroxy functional polymer is prepared by atom transfer radical polymerization and has well defined polymer chain architecture and polydispersity index of less than 2.5. The thermosetting compositions of the present invention have utility as powder coatings compositions.

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Pittsburgh, PA, United States of America

Daniela White