Ppg Industries, Inc.

William G Boberski

Jerome A Seiner

James E Jones

Suryya K Das

Paul P Greigger

Raymond F Schappert

John E Blasko

Peter M Nowakowski

Wen-Hsuan Chang

Rodger G Temple

Kurt Gordon Olson

Richard M Nugent, Jr

Thomas A Ward

Jeffrey G Koren

S Thomas Greer

Victor G Petracca

Stanley T Greer

Raymond E Zaleski

Stephen M Korenkiewicz

Sharon L Young

A method of forming a multilayered finish on a substrate involves:

Multilayered finish having good stain resistance

Disclosed is a method of coating a substrate comprising the steps of (A) coating the substrate with one or more applications of a basecoating composition containing (1) an organic film-forming resin, (2) substantially colorless, substantially inorganic microparticles stably dispersed in the basecoating composition, (3) a solvent system for the film-forming resin, and (4) pigment particles to form a basecoat; and (B) coating the basecoat with one or more applications of a topcoating composition containing (1) an organic film-forming resin, and (2) a solvent system for the organic film-forming resin of the topcoating composition, to form a transparent topcoat. The substantially inorganic microparticles prior to incorporation in the basecoating composition range in size from about 1 to about 150 nanometers.

Color plus clear coating system utilizing inorganic microparticles

There is herein provided an aqueous dispersion of a resinous composition which is water-solubilized with a metal compound such as a metal salt, an example of which is zinc acetate.

Water-dispersible polymers containing metal chelating groups

An intumescent curable composition has as its principal constituents an epoxy resin; a curing agent; and an additive component which is composed of a mixture of materials which provide a source of phosphorus, zinc, boron and an expansion gas. The aforesaid composition is capable of forming a carbonaceous char upon exposure to heat or flame.

Fire protective intumescent mastic composition and method employing same

Disclosed is an essentially solvent-based, organic, high-solids coating composition containing (A) a film-forming binder system containing a crosslinkable resin having a weight average molecular weight of from about 500 to about 10,000; (B) substantially colorless, substantially inorganic microparticles stably dispersed in the coating composition; and (C) a solvent system for the crosslinkable resin. The substantially inorganic microparticles prior to incorporation in the coating composition range in size from about 1 to about 150 nanometers and are in the form of a sol of the microparticles in which the surface of the inorganic microparticles is essentially free of carbon-containing molecules chemically bonded to the inorganic microparticles.

High-solids coating composition for improved rheology control containing

Disclosed is an essentially solvent-based, organic, high-solids coating composition containing (A) a film-forming binder system containing a crosslinkable resin having a weight average molecular weight of from about 500 to about 10,000; (B) substantially colorless, substantially inorganic microparticles stably dispersed in the coating composition; and (C) a solvent system for the crosslinkable resin. The inorganic microparticles prior to incorporation in the coating composition range in size from about 1 to about 150 nanometers and are in the form of a sol of the microparticles in which carbon-containing molecules are chemically bonded to the inorganic microparticles at the surface of the microparticles.

Disclosed are coating compositions containing pigment in a vehicle comprising a dispersion of colloidal silica, a mixture of a hydrolyzable trialkoxysilane and a hydrolyzable dialkoxysilane, alcohol, water and sufficient acidifying agent to provide a pH of the vehicle ranging from about 2.8 to about 6.0.

Pigmented coating composition containing a mixture of alkoxysilanes

Disclosed is a metal condensed phosphate comprising a core of metal condensed phosphate and a coating on the core comprising a reaction product of a metallate and acid. The amount of the reaction product comprising the coating generally ranges from about 0.1 percent to about 50 percent by weight based on the combined weight of the metal condensed phosphate and the reaction product. Also disclosed is a method of preparing a coated, metal condensed phosphate comprising combining an aqueous slurry of metal condensed phosphate with an aqueous metallate while maintaining the pH of the slurry in a range of from about 4 to about 10.

Metal condensed phosphate hardener coated with reaction product from a

Disclosed is an aqueous curable composition comprising:

Curable silicate composition containing metal condensed phosphate

Disclosed is a curable composition consisting essentially of

Curable silicate compositions containing condensed phosphate hardeners

This invention relates to pigmented curable silicate compositions having better pigment dispersions as evidenced by improved color uniformity, hiding power, lower viscosity and consistency. The aqueous compositions contain water-soluble or -dispersible silicate glass, pigment and a base having a basicity greater than that of the silicate glass. Preferred compositions also contain a water-soluble latent insolubilizing agent.

Curable pigmented silicate compositions

This invention relates to coating compositions which are 'solid' prior to application, yet, which when applied to a substrate, flow and level in a manner similar to conventional coating compositions. The coating compositions of the invention comprise a gelled coating composition, capable of application and flow on a solid substrate comprising: (a) a water reducible polymer, (b) water, (c) an electrolyte, (d) a colloidal gelling agent, gelable by interaction with the electrolyte, in an amount sufficient, when interacted with said electrolyte, to gel the composition to form a stable semisolid and to provide a composition reducible to a coating application viscosity upon the application of a relatively small shearing force at a relatively small shearing rate; which gelled coating composition, after being sheared to a coating application viscosity, does not recover substantial colloidal gelling agent contributed gel structure and (e) an amount of a gel structure formation rate increasing compound which corresponds, or is hydrolyzable in situ to effectively provide a compound which corresponds to the formula:

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Gibsonia, PA, United States of America

William G Boberski