Abstract: A sprayable, solvent-borne, primer composition for use as a first coat on light-sensitive, automotive plastic parts. The primer serves as a barrier to block ultraviolet light penetration to the underlying substrate and to prevent migration of substrate degradation and by-products up into the topcoat finishes. The primer is a solvent blend of a film-forming crosslinkable polymer resin, a crosslinker for the resin, a catalyst, carbon black pigments surface modified with a polymer dispersant and an organic pigment derivative co-dispersant, crosslinked polymer microgel particles, and U.V. absorbers and optional antioxidants. The surface modification on the carbon black pigments results in higher pigment loadings, which, in turn, imparts U.V. light protection at exceptionally low dry film builds.

Abstract: A sprayable, solvent-borne, primer composition for use as a first coat on light-sensitive, automotive plastic parts. The primer serves as a barrier to block ultraviolet light penetration to the underlying substrate and to prevent migration of substrate degradation and by-products up into the topcoat finishes. The primer is a solvent blend of a film-forming crosslinkable polymer resin, a crosslinker for the resin, a catalyst, carbon black pigments surface modified with a polymer dispersant and an organic pigment derivative co-dispersant, crosslinked polymer microgel particles, and U.V. absorbers and optional antioxidants. The surface modification on the carbon black pigments results in higher pigment loadings, which, in turn, imparts U.V. light protection at exceptionally low dry film builds.

Abstract: An acid-modified polyolefin is dispersed in water by adding a hydroxy-functional ester made from a polymeric acid and a monoepoxide having from 14 to 46 carbon atoms to the water. Said dispersion is substantially zero-VOC. When a composition of this invention is applied to the surface and cured by baking the article at an elevated temperature, a coating is obtained which improves the adherence of subsequent coatings to a polyolefinic article. A polyolefinic article is one having a surface comprising polypropylene or a polypropylene modified with rubber called a thermoplastic polyolefin (TPO).

Abstract: A one-coat, waterborne coating system for a polypropylene substrate comprises a mixture of an an acid functional acrylic resin latex, a latex of chlorinated polyolefin resin, and a cross-linking agent reactive with the acid functionality of the acrylic resin.

Abstract: An acid-modified polyolefin is dispersed in water by adding a hydroxy-functional ester made from a polymeric acid and a monoepoxide having from 14 to 46 carbon atoms to the water. Said dispersion is substantially zero-VOC. When a composition of this invention is applied to the surface and cured by baking the article at an elevated temperature, a coating is obtained which improves the adherence of subsequent coatings to a polyolefinic article. A polyolefinic article is one having a surface comprising polypropylene or a polypropylene modified with rubber called a thermoplastic polyolefin (TPO).

Abstract: A zero VOC aqueous coating composition comprising a halogen-free propylene/.alpha.-olefin copolymer having an .alpha.,.beta.-unsaturated dicarboxylic acid or anhydride grafted thereon, a base, and a water-dispersible resin containing at least two epoxy groups is applied to a plastic substrate comprising a propylene polymer. The dried coating promotes adhesion of a subsequent coating to the polypropylene-based surface of the article.

Abstract: A water-free, water-free reducible primer composition having a volatile organic content of less than 3 pounds per gallon yields a tough, flexible, and weatherable film when applied to metal or plastic substrates. The base resin is a polyester having an acid number of from about 50 to about 60 and a hydroxyl number of from about 160 to about 200. The polyester is the reaction product of from about 0.45 to about 0.5 mole % of adipic acid, from about 0.35 to about 0.4 mole % of neopentyl glycol, and from about 0.15 to about 0.2 mole % of trimethylolpropane.

Abstract: A primer composition, particularly suitable for a highly plasticized polyolefin substrate, comprises a mixture of chlorinated polyolefin and rubberized epoxy resin.

Abstract: A pump device for metering and/or feeding liquid materials, particularly colorants and plasticizers for molded plastics. The pump consists of a linear metering tube which is straight throughout of length of the compression zone, thereby reducing stress and fatigue on the tube, thus prolonging tube life. The metering tube is compressed by compression rollers attached to an endless drive belt which moves within a track cut into a housing. In another embodiment of this invention, wherein the linear metering tube is inclined slightly, stresses on the tube are distributed over the tube by the gradual compression of the tube. The pump provides for simple, precise, long-life dispensing of polymer additives.

Abstract: Coating compositions comprise a clear, homogeneous binder mixture of polyether or polyester polymer, an amine-formaldehyde condensate resin, and an organic solvent; the mixture being miscible with water to application viscosity. The coating composition typically contains suspended solid particulates, including pigments and metal flakes.

Abstract: Coating compositions comprise a clear, homogeneous binder mixture of polyether or polyester polymer, an amine-formaldehyde condensate resin, and an organic solvent; the mixture being miscible with water to application viscosity. The coating composition typically contains suspended solid particulates, including pigments and metal flakes.