Ppg Industries, Inc.

Ppg Industries Ohio, Inc.

Richard M Nugent, Jr

Ralph C Gray

Jerome A Seiner

Michael J Pawlik

Ken W Niederst

Dennis W Jones

Steven D Perrine

Yves Le Disert

Laurent Deronne

Joseph F Bosso

Ellor James Van Buskirk

Edward E McEntire

Thomas A Ward

Joseph E Plasynski

James E Jones

Mark W McMillen

Kathleen M Coldren

Valentin Berger

Wen-Hsuan Chang

Masayuki Nakajima

William G Boberski

David T McKeough

J Alden Erikson

Constantine A Kondos

Michael M Chau

Paul P Greigger

Jeffrey G Koren

Michael L White

Brian T Hauser

Paul D Greigger

Robert J Lipinski

A corrosion resistant, alkali resistant coating composition is disclosed. The composition comprises a binder comprising a reaction product of an epoxy-containing material and a phosphorus-containing material together with a curing agent. Aminoplasts, especially melamine-based aminoplasts, are particularly suitable curing agents. A source of silicon can optionally be included. The compositions also provide excellent adhesion and can be used with or without a weldable primer. The compositions are applied to and cured on a metal substrate.

Layer of reaction product of epoxy and phosphorus materials and curing agent on substrate

Aqueous composition of reaction product of epoxy and phosphorus materials with curing agent

Corrosion and alkali-resistant compositions and methods for using the same

A curable coating composition is disclosed comprising a resinous binder comprising (a) a reaction product of an epoxy-containing polymer with a compound containing phosphorus acid groups, the reaction product having reactive functional groups, and (b) a curing agent having functional groups reactive with the functional groups of (a). An electroconductive pigment is dispersed in (a) such that the weight ratio of the electroconductive pigment to (a) plus (b) is within the range of 0.5 to 9.0:1. When the curable coating composition is deposited and cured on a metal substrate, the cured coating is weldable.

Curable, weldable coating compositions

The present invention provides a weldable, coated metal substrate having a pretreatment coating including a reaction product of at least one epoxy-functional material and at least one phosphorus-containing material or amine-containing material and a weldable coating having an electroconductive pigment and a binder deposited thereon.

Weldable, coated metal substrates and methods for preparing and inhibiting corrosion of the same

Weldable coating of phosphated epoxy polymer, curing agent and electroconductive pigment

The present invention provides a metal substrate coated with a first pretreatment composition including a transition element-containing material having one or more Group IIIB elements, Group IVB elements, lanthanide series elements or mixtures thereof; and a second pretreatment composition including a reaction product of at least one epoxy-functional material or derivative thereof and at least phosphorus-containing material, amine-containing material and/or sulfur-containing material deposited upon the first pretreatment composition. If desired, the first and second pretreatment compositions can be combined into a single pretreatment.

Coated metal substrates and methods for preparing and inhibiting corrosion of the same

The present invention provides coating compositions including: (a) about 75 to about 99.9 weight percent of a crosslinkable film-forming system including one or more crosslinkable film-forming resins and one or more crosslinking materials which is capable of reacting with the film-forming resin to form a crosslinked film; and (b) one or more substantially saturated, predominantly hydrocarbon adhesion promoting agents having an average of more than one pendant or terminal polar group per molecule which are capable of reacting with the crosslinking material, the adhesion promoting agent(s) being present in an amount ranging from about 0.1 to about 25 weight percent on a basis of total resin solids of the coating composition. The coating compositions are useful for directly coating surfaces of thermoplastic and thermosetting plastic substrates, such as TPO and RIM, without the aid of flame or corona pretreatment, or the use of an adhesion promoter. Plastic articles coated with the coating compositions are also disclosed.

Coating composition for plastic substrates

Disclosed is a temporary, protective dry lubricating coating composition which when deposited and dried on a metallic substrate, is removable by contacting with an aqueous alkaline cleaning solution. The coating composition comprises (a) a wax present in an amount up to 20 weight percent; (b) a base-neutralized, acid functional polymer which is the polymerization reaction product of (i) a polymerizable, ethylenically unsaturated monomer having acid functionality and (ii) at least one polymerizable, ethylenically unsaturated monomer different from (i); and (c) an amine containing an acyclic moiety of from 8 to 30 carbon atoms, the amine being different from the base used to neutralize the acid functional polymer (b). The temporary protective coating is compatible with a wide range of adhesives and sealants used in the assembly of automobiles.

Temporary protective coating

The composition of a non-chrome post-rinse composition for treating phosphated metal substrates is disclosed. The composition comprises the reaction product of an epoxy-functional material containing at least two epoxy groups; and an alkanolamine, or a mixture of alkanolamines. The composition further comprises a group IV-B metal ion, or a mixture of group IV-B metal ions. Also provided is a non-chrome post-rinse concentrate; a process for treating a phosphated metal substrate comprising contacting said phosphated metal substrate with the non-chrome post-rinse composition described above; and the coated article prepared by this process.

Non-chrome post-rinse composition for phosphated metal substrates

A cationic final rinse metal treatment composition comprises a water soluble or water dispersible phenolic polymer which is the reaction product of: an amino phenol and either an anhydride-containing polymer or a di-epoxide, said polymer including a group imparting cationic functionality to the polymer.

Phenolic polymers from amino phenols and anhydride or epoxy polymers

An ungelled thermoplastic resin having gas barrier properties and containing at least 7 percent by weight of amine nitrogen is derived via the reaction of a polyamine devoid of oxyalkylene moieties and containing up to about two primary amino nitrogen groups per molecule and a polyepoxide in a molar ratio of polyamine to polyepoxide of from 1.4:1 to 0.83:1.

Ungelled polyamine-polyepoxide resins

Growing community of inventors

Allison Park, PA, United States of America

Richard M Nugent, Jr