Ppg Industries, Inc.

Ppg Industries Ohio, Inc.

Prc De Soto International, Inc.

Joseph Theodore Valko

Richard F Karabin

Robin M Peffer

Joseph E Plasynski

Gregory J McCollum

Lawrence G Anderson

Roger M Christenson

Michael Allen Mayo

Ellor James Van Buskirk

Craig A Wilson

Raphael O Kollah

Roger L Scriven

Thomas C Moriarity

Thor G Lingenfelter

V Eswarakrishnan

Philippe Faucher

Michael J Pawlik

Alan J Kaylo

James E Poole

Ralph C Gray

Roy E Dean

Elizabeth A Furar

Richard F Syput

Brian T Hauser

Edward E Abbott

Robert D Miller

Beth Furar

A coating/sealant system that includes a coating and a sealant deposited over at least a portion of the coating, in which the coating includes a reaction product formed from reactants comprising a phosphated epoxy resin and a curing agent, and the sealant includes a sulfur-containing polymer.

Coating/sealant systems, aqueous resinous dispersions, and methods of electrocoating

Coating/sealant systems, aqueous resinous dispersions, methods for making aqueous resinous dispersions, and methods of electrocoating

Disclosed herein are electrodepositable coating compositions comprising a film forming resin and a textured additive, wherein the textured additive has a density (specific gravity) of no more than 4.5 g/cc and a melting point greater than the curing temperature of the electrodepositable coating composition. Also described are coated substrates having a cured coating layer comprising the electrodepositable coating composition, wherein the cured film layer has a texture of at least 250&#x3bc;-in as measured by a profilometer at conventional cured film thicknesses.

Near neutral buoyancy texture additive for electrodepositable coating compositions and associated methods for forming textured coated substrates

A process for applying a coating on aluminum substrates by anionic electrodeposition of a phosphated epoxy resin made by phosphating a polyepoxide with both phosphoric acid and an organophosphonic acid and/or an organophosphinic acid. The coating has a reduced tendency to form pinholes.

Electrodeposition coatings for use over aluminum substrates

Stabilization of aqueous resinous dispersions containing a pigment of a divalent metal such as strontium chromate is disclosed. Stabilization is achieved by incorporating a chelating agent in the dispersion.

Stabilizing aqueous anionic resinous dispersions with chelating agents

Compositions and process for treating metal substrates

An electrodepositable composition is provided comprising: (A) a non-gelled cationic resin which is derived from a polyepoxide and which contains in the resin molecule cationic salt groups and active hydrogen groups selected from aliphatic hydroxyl and primary and secondary amino; and present as a separate component (B) a fully capped polyisocyanate curing agent containing substantially no free isocyanate groups. The electrodepositable composition contains from about 0.02 to 1.0 milliequivalents phenolic hydroxyl groups per gram of resin solids, and from about 0.1 to 2.0 milliequivalents beta-hydroxy ester groups per gram of resin solids. The composition provides excellent corrosion resistance when electrodeposited over steel substrates, and does not require lead in the formulation nor the use of a conventional chrome rinse for the steel substrate pretreatment before electrodeposition.

Cationic resin and capped polyisocyanate curing agent suitable for use

An electrodepositable composition is provided comprising: a non-gelled, cationic, water-dispersible resin, electrodepositable on a cathode, which is derived from a polyepoxide and which contains in the resin molecule cationic salt groups, beta-hydroxy ester groups, active hydrogen groups including free phenolic hydroxyl groups, and capped isocyanate groups. The composition provides excellent corrosion resistance when electrodeposited over steel substrates, and does not require lead in the formulation nor the use of a conventional chrome rinse for the steel substrate during pretreatment before electrodeposition.

Cationic resin containing capped isocyanate groups suitable for use in

An electrodepositable composition is provided comprising:

A curable composition, comprising a beta-hydroxy urethane which is particularly useful as a crosslinking agent which affords relatively low temperature cure, is provided.

Beta-hydroxy urethane low temperature curing agents

A cationic resin containing blocked isocyanate groups which is suitable for use in electrodeposition is disclosed. The cationic resin is derived from an epoxy resin and contains in the resin molecule cationic salt groups, active hydrogen groups and blocked isocyanate groups. The blocked isocyanate groups are incorporated into the resin molecule by reacting the epoxy resin with a compound selected from the class consisting of mercapto compounds and acid group-containing compounds where the compounds also contain blocked isocyanate groups. The resin can be formulated into an electrocoating composition which is free of lead and yet provides outstanding corrosion resistance when electrodeposited over steel substrates. The outstanding corrosion resistance can be attained when the substrate has not been given a chrome rinse which is conventional in pretreating the steel substrate before electrodeposition.

Cationic resin containing blocked isocyanate groups suitable for use in

An ungelled reaction product of a polyepoxide and an active hydrogen-containing material containing at least two active hydrogens per molecule is disclosed. The active hydrogen-containing material being a hydroxyalkyl-substituted urethane in which the hydroxy group is in the beta position to the urethane group. The reaction product is useful as a precursor in making cationic resins for use in cationic electrodeposition.

Epoxy resin advancement using urethane polyols and method for use thereof

Formaldehyde-containing cationic electrodepositable compositions to which are added a formaldehyde scavenger are disclosed. Also disclosed are the use of these compositions in a method of cationic electrodeposition. Free formaldehyde in cationic compositions can lower the pH of the compositions making them more corrosive to the metal parts such as ferrous metal tanks and attending piping and pumps in contact with such compositions. The presence of the formaldehyde scavenger in such compositions stabilizes the pH.

Cationic electrodepositable compositions containing formaldehyde

Coating compositions comprising a polymeric polyol with a polyester crosslinking agent having at least two gamma and/or delta-hydroxyester groups per molecule are disclosed. The compositions, when applied to a substrate and cured in the presence of a transesterification catalyst, give solvent-resistant coatings.

Growing community of inventors

Pittsburgh, PA, United States of America

Joseph Theodore Valko