Abstract: A gas barrier polymer composition with active hydrogen functionality is provided. The polymer may be prepared by reacting a solution of organic diacid containing at least one active hydrogen group and diglycidyl ether in the presence of an optional catalyst. The pressure, temperature, and time parameters of the reaction are preferably regulated to prevent degradation and subsequent incorporation of degradation products of organic diacid containing at least one active hydrogen group into the gas barrier polymer composition. A formulation of the gas barrier polymer composition and a carrier may be used to coat plastic materials, containers, and preforms. The gas barrier polymer composition may also be employed in a method of making multilayer packaging materials or container preforms. The multilayer packaging materials or preforms can be used to make containers useful in packaging gas sensitive substances.

Abstract: A coating composition for application to primed metal substrates as a topcoat is disclosed. The coating composition is especially useful on metal closures for vacuum-packed food products. The coating composition is free of a halide-containing vinyl polymer and comprises: (a) an acrylate copolymer having pendant glycidyl groups, (b) an acid-terminated polyester, and (c) a nonaqueous carrier.

Abstract: Powder coating compositions for metal substrates, a method of powder coating a metal substrate, and a metal article are disclosed. The powder coating composition is a thermoplastic material and comprises: (a) a first polyester having a weight average molecular weight of about 10,000 to about 80,000 and a Tg of greater than 45° C. to about 100° C., (b) a second polyester having a weight average molecular weight of about 10,000 to about 70,000 and a Tg of about −10° C. to about 45° C., and optionally, (c) a modifying resin, such as an epoxy resin having an epoxy equivalent weight of about 500 to about 15,000, wherein the Tg of the first and second polyesters differ by about 5° C. to about 60° C. The powder coating composition is applied to a metal substrate to provide a composition film having a thickness of about 1 to about 200 microns.

Abstract: The invention provides aqueous, solvent based, and solvent-free curable coating compositions which include (A) the reaction product of an epoxy resin, acid, and tertiary amine; (B) a reactive diluent, and, optionally, (C) a curing agent. The compositions are useful for forming cured coated substrates, that are especially suitable for food and beverage packaging.

Abstract: A universal tinting concentrate for both solvent- and water-based paints and coatings. The universal tinting concentrate is a composition which includes a colorant component, such as pigment, colorant, tinting agent and/or metal effect agent; a pigment dispersant including an organic acid containing no more an 70 carbon atoms; and a pH-neutralizing agent. In one embodiment of the invention, the pigment dispersant is represented by the following structure: where r and s are integers and r+s is 6 to 16; and x and y are integers and x+y is 0 to 19; and Z is H or COOH and Z′ is H or COOH.

Abstract: Powder coating compositions for metal substrates, a method of powder coating a metal substrate, and a metal article are disclosed. The powder coating composition is a thermoplastic material and comprises: (a) a first polyester having a weight average molecular weight of about 10,000 to about 80,000 and a Tg of greater than 45° C. to about 100° C., (b) a second polyester having a weight average molecular weight of about 10,000 to about 70,000 and a Tg of about −10° C. to about 45° C., and optionally, (c) a modifying resin, such as an epoxy resin having an epoxy equivalent weight of about 500 to about 15,000, wherein the Tg of the first and second polyesters differ by about 5 ° C. to about 60 ° C. The powder coating composition is applied to a metal substrate to provide a composition film having a thickness of about 1 to about 200 microns.

Abstract: A coating composition for application to primed metal substrates as a topcoat is disclosed. The coating composition is especially useful on metal closures for vacuum-packed food products. The coating composition is free of a halide-containing vinyl polymer and comprises: (a) an acrylate copolymer having pendant glycidyl groups, (b) an acid-terminated polyester, and (c) a nonaqueous carrier.

Abstract: The invention provides aqueous, solvent based, and solvent-free curable coating compositions which include (A) the reaction product of epoxy resin, acid, and tertiary amine; (B) reactive diluent, and, optionally, (C) curing agent. The compositions are useful for forming cured coated substrates, that are especially suitable for food and beverage packaging.

Abstract: A coating composition based on a dispersed fluoropolymer resin is provided. The composition includes a vinylidene difluoride-based polymer such as PVDF, an organic solvent and a dispersant. A method of forming a protective coating on a metal substrate with the fluoropolymer resin-based coating composition and a composite material having at least one surface coated with a vinylidene difluoride-based polymer film are also provided.

Abstract: An aqueous coating composition and a method of coating a metal substrate are provided. The composition and method are particularly suitable for use in coating can bodies and can ends or for-can side seam coatings. The coating composition includes a solvent component and a film forming component. The solvent component includes water and an organic solvent. The film forming component includes a curing agent and the product of the reaction of a carboxy addition polymer and an epoxy resin in the presence of a tertiary amine catalyst.

Abstract: An aqueous coating composition and a method of coating a metal substrate are provided. The composition and method are particularly suitable for use in coating can bodies and can ends or for can side seam coatings. The coating composition includes a solvent component and a film forming component. The solvent component includes water and an organic solvent The film forming component includes a curing agent and the product of the reaction of a carboxy addition polymer and an epoxy resin in the presence of a tertiary amine catalyst.

Abstract: An allophanate-modified urethane resin is formed by reacting an allophanate-modified isocyanurate with one or more hydroxy-functional olefinic compounds, such as hydroxy-functional acrylates, methacrylates, allyl ethers, or vinyl ethers. Such resins typically have relatively low viscosities and can be used to make coating compositions for surfaces such as wood, cement, vinyl, plastic, metal, and glass on such diverse products as flooring, vinyl tiles and sheets, fiber optics, and plastic. Such coating compositions are typically curable by thermal processes or by high-energy irradiation, including UV/visible light or electron beam irradiation.

Abstract: A method of preparing a water-dispersible epoxy resin coating composition comprises:(a) Reacting an epoxy polymer with a carboxyl bearing polymer in the presence of an esterification catalyst;(b) Quenching with an excess of tertiary amine before the esterification reaction is completed; and(c) adding water to form an aqueous dispersion.

Abstract: An aqueous coating composition that is particularly adapted for repairing defects in coated metal articles comprises an aqueous dispersion having as its major ingredient an epoxy phosphate ester polymer, a cross-linking agent for the epoxy phosphate ester polymer which may be an aminoplast or phenoplast resin, and an effective quantity of an organic solvent having a solubility parameter in the range of 8.5-10 and being soluble in water at 20.degree. C. to the extent of less than 10%. The composition is desirably electrocoated upon the object at a temperature in the range of from 80.degree. to 120.degree. F. and preferably from about 90.degree.-100.degree. F.

Abstract: A liquid coating composition particularly adapted for coating cans. The composition comprises a curable, hydroxyl functional block copolymer which is the reaction product of a 1,2-epoxy resin and a carboxyl functional polyester resin, and a hydroxyl-reactive crosslinking agent providing desirably at least 2.0 equivalents of hydroxyl reactive functional groups per hydroxyl equivalent of the block copolymer. The block copolymer desirably has a number average molecular weight in the range of 7000 to 30,000. Also disclosed is a method for formulating a coating composition utilizing craze resistance testing over an aging period to enable the choice of the quantity of curing agent to be used in the coating composition.

Abstract: An aqueous coating composition and a method of coating a metal substrate are provided. The composition and method are particularly suitable for use in coating can bodies and can ends or for can side seam coatings. The coating composition includes a solvent component and a film forming component. The solvent component includes water and an organic solvent. The film forming component includes a curing agent and the product of the reaction of a carboxy addition polymer and an epoxy resin in the presence of a tertiary amine catalyst.

Abstract: A coating composition particularly adapted for can coatings is prepared by the addition polymerization of a monomer such as styrene in a reaction medium comprising a modified 1,2 epoxy resin. The epoxy resin is modified by combining a portion of its 1,2-epoxy groups with epoxy-reactive groups of an ethylenically unsaturated monomer, and reacting others of its 1,2-epoxy groups with a tertiary amine and with a preformed addition polymer containing carboxyl groups to form an ionic, resinous composition containing sufficient carboxyl groups to render the coating composition self-dispersible in water in neutralized form.

Abstract: An aqueous coating composition that is particularly suited for coating metal containers used for packaging food and beverages. The coating comprises an aqueous dispersion of the reaction product of a 1,2-epoxy resin with a carboxyl functional addition polymer, an epoxy phosphate ester polymer, and an effective quantity of a curing agent which may be a phenoplast or an aminoplast resin.

Abstract: The flavor protecting properties of interior container coating compositions are improved by the inclusion of cyclodextrins in the composition.

Abstract: Base alkyd resins are modified to provided increased hydrolytic stability by reacting them with a polybasic acid composition containing one or more cycloaliphatic polybasic acids, the resulting modified alkyd having an acid number in the range of 25-100 and having pendent carboxy-functional monoester groups derived from the cycloaliphatic polybasic acids.