Ppg Industries, Inc.

Ppg Industries Ohio, Inc.

David T McKeough

Wen-Hsuan Chang

Ronald R Ambrose

John R Peffer

Samuel Porter, Jr

Robert M Piccirilli

Michael M Chau

Delano R Eslinger

Gregory J McCollum

James B O'Dwyer

Robert W Walters

Charles M Kania

Richard M Nugent, Jr

Cletus N Welch

Rudolf Maska

Padmanabhan Sundararaman

J Alden Erikson

Eric M King

Wen H Chang

Byron K Johnston

Robert J Lipinski

David L Holzinger

Susan D Klejsmit

Described are articles having a photochromic poly(meth)acrylic coating The coatings exhibit a Fischer microhardness of from 50 to 150 Newtons per mm and improved photochromic performance properties, i.e., the formation of darker activated colors and faster rates of photochromic activation and fade when irradiated with ultraviolet light.

Poly(meth)acrylic photochromic coating

Stable, non-gelled, one-package coating compositions capable of being cured at ambient conditions to produce durable coatings comprising at least one polymer and/or oligomer having a molecular weight of at least about 100 and bearing at least two specific aziridine moieties, at least two specific carbodiimide moieties or combinations thereof and at least one polymer and/or oligomer having a molecular weight of at least about 100 and bearing at least two covalently blocked carboxylic acid moieties. Process for coating a substrate using such compositions are also claimed.

Stable, one-package, non-gelled coating composition curable under

Disclosed herein are crosslinkable water-dispersible acrylic copolymers which are prepared by free-radical initiated polymerization of ethylenically unsaturated monomers containing independently an active hydrogen group, a carboxyl group and a sulfonic group, wherein the polymerization is conducted in the presence of a wax. In combination with curing agents, the crosslinkable compositions are particularly useful in imparting markedly improved flow to dip coatings.

Water reducible acrylic with superior dip and flow characteristics/low

Disclosed are essentially zinc-free, organic coating compositions based on silicon-containing polyols comprising reaction products of hydrophobic polyols, organosilicon-containing materials, and higher monohydric alcohols, R-OH. The organosilicon-containing material comprises an organosilicon-containing substance free of certain functional groups attached directly to carbon and essentially free of alkali metal ions. The organosilicon-containing substance has atoms bonded directly to Si all of which are selected from O, N, and/or Cl. The organosilicon-containing substance also has moieties directly bonded to Si which are displaceable by reaction with water and/or alcohol. The reaction product is not capable of being gelled when subjected to a specific gel test, has a content of hydroxyl groups from the hydrophobic polyol ranging from 0.4 to 10 milliequivalents per gram of reaction product, has a content of groups, --OR, from the higher monofunctional alcohol ranging from 0.1 to 7 milliequivalents per gram of reaction product, and a content of the moieties directly bonded to Si which are displaceable of less than 1 milliequivalent per gram of reaction product. The organic coating composition also contains a curing agent for for the silicon-containing polyol selected from the group consisting of an aminoplast, a phenoplast, an isocyanate, a blocked isocyanate, a semi-blocked isocyanate, a lower-alkoxy-containing silane, and a hydrolyzed lower- alkoxy-containing silane. The coating composition is essentially free of elemental zinc and cures to an essentially organic coating.

Silicon-containing polyols

A polymeric reaction product, a process for its preparation and a coating composition containing the reaction product as a binder are described. The polymeric reaction product is prepared by the vinyl addition polymerization of a vinyl monomer component of which at least 50 percent by weight is an active hydrogen-containing vinyl monomer in the presence of a polymeric diluent. The rate of polymerization is controlled such that the amount of unreacted vinyl monomer, on the average, does not exceed 10 percent by weight of the total weight of the reaction mixture.

Preparation of low molecular weight polymers by vinyl addition

Disclosed is an ungelled resin comprising a compound corresponding to a specified formula (I) which compound typically is prepared by reaction of an aminoalkyloxy silane with an organic isocyanate. The ungelled resin contains a hydrolyzable group that is attached directly to Silicon. The ungelled resin can be utilized in coating compositions. The ungelled resin can be cured with moisture and/or with polyols, and can be used to provide protective and/or decorative films on a variety of substrates. The novel compounds contained in the ungelled resin for convenience can be thought of as prepared from an organic isocyanate having an average functionality of at least 1; a silicon-containing compound corresponding to a specified formula (III) infra, the silicon-containing compound having at least one hydrolyzable group; and a compound containing at least 2 carbon atoms, at least 1 functional group reactive with a moiety on the silicon-containing compound and at least one amino group. A compound of the resin contains at least one hydrolyzable group from the silicon-containing compound. A compound of the resin also contains a residue of the silicon-containing compound bonded to a residue of the compound containing at least 2 carbon atoms through an oxygen-silicon linkage.

Curable coating vehicle based upon aminoalkyloxy silanes and organic

Disclosed is an ungelled resin composition comprising a compound having at least one group containing a silicon atom selected from: ##STR1## wherein Q represents the residue from an organic polyol selected from the group consisting of (1) simple diols, triols and higher hydric alcohols, (2) polyester polyols, (3) polyether polyols, (4) amide-containing polyols, (5) epoxy polyols and (6) polyhydric polyvinyl alcohols, and each

Ungelled resins containing hydrolyzable moieties from organosilane

Disclosed is an ungelled urethane resin composition containing a urethane compound having in a molecule thereof at least one group containing a silicon atom selected from: ##STR1## wherein Q represents the residue from a urethane polyol; each

Urethane resins containing hydrolyzable moieties from organosilane

Disclosed is a liquid composition comprising a mixture of (A) a hydrophobic polyol, and (B) an organosilicon-containing material. The organosilicon-containing material is substantially free of unhydrolyzed aminoalkylsilane and comprises an organosilicon-containing substance free of functional groups attached to carbon and essentially free of alkali metal ions. The organosilicon-containing substance has atoms bonded directly to silicon all of which are selected from O, N, and/or Cl. The silicon-containing substance additionally has moieties directly bonded to Si which are displaceable by reaction with water and/or alcohol. At least a part of the silicon-containing substance is hydrolyzed to a compound or a mixture of compounds which contains a residual amount of the moieties directly bonded to Si which are displaceable by reaction with water and/or alcohol. After components (A) and (B) are mixed, the composition is a homogeneous liquid which is capable of self-curing to a continuous film by reaction, with moisture and/or the hydrophobic polyol, of the residual moieties bonded directly to silicon which are displaceable by reaction with water and/or alcohol.

Gelable blends of organosilicon-containing materials and hydrophobic

There are disclosed herein lactone-polyester polyols which are derived from lactones, resinous polyols thereof, and coating compositions formulated therewith. The polyester polyols are typically prepared by reacting a large excess of low molecular weight polyols with lactones or functional equivalents thereof. The polyols are employed in amounts sufficient to produce reaction products containing a significant amount of unreacted polyols which can be subsequently removed by means such as vacuum distillation.

High solids lactone-polyester polyols and coating compositions thereof

Disclosed herein is a poly(urethane-urea) which is prepared by reverse-addition of an isocyanate-terminated prepolymer to an organic medium containing an alcoholic solvent and a chain extender comprising at least two isocyanate-reactive active hydrogen groups consisting essentially of amino groups.

Non-aqueous poly(urethane-urea)

Polymeric microparticles and dispersions of polymeric microparticles in a liquid hydrocarbon are disclosed. The dispersions are prepared by reacting in dispersed form a preformed NCO-prepolymer containing a segment solvated by the liquid hydrocarbon and a segment insoluble in the liquid hydrocarbon with an active hydrogen-containing compound. Reaction proceeds to form polymeric microparticles which are dispersed in the liquid hydrocarbon. Also disclosed are the use of the polymeric microparticles in coating compositions and articles coated with the coating compositions.

Polymeric microparticles

There are disclosed herein polyurethane polyols and coating compositions formulated therewith. The polyurethane polyols are prepared by typically reacting low molecular weight polyols in amounts sufficient to produce reaction products containing a significant amount of unreacted starting polyols which can be subsequently removed by means such as vacuum distillation.

High solids polyurethane polyols and coating compositions thereof

There are disclosed herein polyester polyols, resinous polyols thereof, and coating compositions formulated therewith. The polyester polyols are prepared by typically reacting a large excess of low molecular weight polyols with polycarboxylic acid or functional equivalents thereof. The polyols are employed in amounts sufficient to produce reaction products containing a significant amount of unreacted polyols which can be subsequently removed by means such as vacuum distillation.

High solids polyester polyols and resinous polyols thereof

This invention encompasses a high solids, solvent-based, thermosetting composition having the necessary hardness and flexibility that make it an effective coating for both elastomeric and hard metal substrates. The composition comprises a polyester-urethane polyol and a curing agent such as an aminoplast.

Growing community of inventors

Gibsonia, PA, United States of America

David T McKeough