Ppg Industries, Inc.

Ppg Industries Ohio, Inc.

Peintures Corona S.a.

Ppg Industries (france) S.a.

Philippe Faucher

Gregory J McCollum

Ellor James Van Buskirk

Richard F Karabin

Robert R Zwack

Raphael O Kollah

Joseph Theodore Valko

Thomas C Moriarity

Victor G Corrigan

V Eswarakrishnan

Jean Roue

Michael J Pawlik

Craig A Wilson

James E Poole

Roger L Scriven

Venkatachalam Eswarakrishnan

Chester J Szymanski

Richard F Syput

Keith S Ritter

Thomas Palaika

Yves Le Disert

Thomas Moriarity

Yves LeDisert

An electrodeposition process is provided for applying an elastomeric thermosetting, film-forming polymer to a corrosion-resistant electrically conductive substrate that is free of an electrodeposited coating. The elastomeric polymer typically is a polyurethane, a polyurea or a poly(urethane urea). The film-forming coating applied by this process provides chip resistance to the substrate. A coated article that is prepared according to the process is also provided.

Article having a chip-resistant electrodeposited coating and a process for forming an electrodeposited coating

A process for applying two electrodeposited coatings, one on top of the other, to an electrically conductive substrate is provided. An electrically conductive first coating is applied to provide for corrosion resistance and a second polyurethane-based coating is applied to the first coating to provide chip resistance. Also, aqueous dispersions of the polyurethane coating compositions are disclosed.

Process for forming a two-coat electrodeposited composite coating the composite coating and chip resistant electrodeposited coating composition

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:

Products obtained from the reaction of amine-diol and a polyfunctional

Ungelled reaction products of polyoxyalkylenepolyamies with monoepoxides and optionally with a polyfunctional material which contains groups capable of reacting with amino and/or hydroxyl groups are disclosed. The reaction products can be neutralized with acid and dispersed in aqueous medium where they are useful as additives for cationic electrodeposition baths to improve surface appearance of electrodeposited coatings.

Polyoxyalkylenepolyamine reaction products and their use in cationic

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Paris, France

Philippe Faucher