Ppg Industries Ohio, Inc.

Ppg Industries, Inc.

Vitro, S.a.b. De C.v.

Matthew S Scott

Gregory J McCollum

Richard F Syput

Steven R Zawacky

Thomas C Moriarity

David R Fenn

Alan J Kaylo

Robert R Zwack

Raphael O Kollah

Venkatachalam Eswarakrishnan

Geoffrey R Webster

Kevin J Dufford

Judith A Orzechowski

Lawrence G Anderson

Roger M Christenson

Paul A Medwick

James W McCamy

Brian Edward Woodworth

Craig A Wilson

Brian K Rearick

Benjamin Kabagambe

Michael J Buchanan

Chester J Szymanski

Victor G Corrigan

Neil D McMurdie

Michael L White

Donald D Emmonds

Joseph A Bethoski

Disclosed are aqueous resinous dispersions that are electrodepositable and exhibit good anti-settling properties, as well as to their use to produce smooth, low gloss coatings. The aqueous resinous dispersions include an active hydrogen-containing, cationic salt group-containing polymer; a curing agent; and oxidized polyolefin particles.

Electrodepositable aqueous resinous dispersions and low gloss coatings produced therefrom

The present invention relates to reflective articles, such as solar mirrors, that include a sacrificial cathodic layer. The reflective article, more particularly includes a substrate, such as glass, having a multi-layered coating thereon that includes a lead-free sacrificial cathodic layer. The sacrificial cathodic layer includes at least one transition metal, such as a particulate transition metal, which can be in the form of flakes (e.g., zinc flakes). The sacrificial cathodic layer can include an inorganic matrix formed from one or more organo-titanates. Alternatively, the sacrificial cathodic layer can include an organic polymer matrix (e.g., a crosslinked organic polymer matrix formed from an organic polymer and an aminoplast crosslinking agent). The reflective article also includes an outer organic polymer coating, that can be electrodeposited over the sacrificial cathodic layer.

Reflective article having a sacrificial cathodic layer

Disclosed are coating compositions, such as primer compositions, suitable for providing corrosion protection to metal substrates, as well as related coated articles and methods.

Coating compositions exhibiting corrosion resistance properties, related coated articles and methods

The present invention provides a film-forming composition. The composition includes a reaction product of:

Reaction product of polyamine, acyclic carbonate and cyclic carbonate

Reaction product of polyamine and acyclic carbonate

A composition is provided comprising a reaction product of (1) a bismuth compound; and (2) an heterocyclic compound having mercapto functionality. Such compositions are useful in electrodepositable compositions further comprising an active hydrogen-containing, cationic salt group-containing resin and a capped polyisocyanate curing agent. These electrodepositable compositions may be prepared without the use of conventional lead or tin catalysts and exhibit excellent properties as cured coatings.

Organosulfur bismuth compounds and their use in electrodepositable coating compositions

An electrodepositable composition is provided comprising (a) an active hydrogen-containing, cationic salt group-containing resin electrodepositable on a cathode; (b) a capped polyisocyanate curing agent; and (c) bismuth diorganodithiocarbamate. Such compositions may be prepared without the use of conventional lead or tin catalysts and exhibit excellent properties as cured coatings. Also provided is a method of electrocoating an electroconductive substrate using the composition of the present invention.

Electrodepositable coating composition containing bismuth

An electrodepositable coating composition is provided comprising (a) an active hydrogen-containing, cationic salt group-containing resin electrodepositable on a cathode; (b) a curing agent for transurethanation, transamidation or transesterification curing like at least a partially capped polyisocyanate curing agent; and (c) a catalytic mixture of bismuth and an amino acid or amino acid precursor. Optionally, an auxiliary acid may be present to increase the effectiveness of the amino acid in the mixture with bismuth.

Electrodepositable coating composition containing bismuth and amino acid

An aqueous electrocoating composition useful in a method of electrodeposition contains an electrodepositable resin, optionally a curing agent and a microparticulate crosslinked unsaturated polyester flatting agent. The microparticulate flatting agent provides the desired flatting effect without compromising coating properties such as corrosion resistance and flexibility.

Crosslinked unsaturated polyesters as flatting agents in aqueous

A high throw power electrodeposition system with improved rupture voltage is disclosed. The electrodepositable coating includes an active hydrogen-containing ionic resin and a gamma hydroxy urethane curing agent, such as a curing agent having the structural feature: ##STR1## The gamma hydroxy urethane curing agent can be prepared by reacting a polyisocyanate with a 1,3-polyol, and in particular with 2,2,4-trimethylpentane-1,3-diol. The composition can also include a curing agent having an alkyl urethane structural feature which can be the reaction product of a polyisocyanate and a blocking agent which is a fatty alcohol. A method for coating a conductive substrate with the above-described composition is also disclosed. The method includes passing an electric current between the conductive substrate serving as a first anode and a second anode to deposit the composition and the conductive substrate.

High throw power electrodeposition system

A process for electrodialyzing ultrafiltrate and an electrodialysis cell for use in the process are disclosed. The ultrafiltrate contains ionic materials which form a deposit on at least one of the electrodes of the electrodialysis cell impairing the electrical efficiency of the cell. This problem is overcome by removing the deposited electrode from the cell while simultaneously replacing it with electrode relatively free of deposit, thereby restoring the electrical efficiency of the cell. The invention is particularly useful for treatment of the ultrafiltrate of an electrodeposition bath.

Treatment of ultrafiltrate by electrodialysis

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Pittsburgh, PA, United States of America

Matthew S Scott