Abstract: An ultraviolet light-curable liquid coating composition for molded plastic objects is disclosed. The composition is a liquid mixture of a polyurethane oligomer polyacrylate and an hydroxy-functional polyacrylate ester. The polyacrylate ester is present in an amount of from more than 50% up to 70% of total polyacrylate, and the composition is in solution in alcoholic solvent providing a solids content of from 65% to 90%. A photoinitiator is included to render the composition curable upon exposure to ultraviolet light.

Abstract: An unsaturated ionic dimer of chromic acid with monoethylenically unsaturated monomer containing a single amine group is disclosed which can be incorporated into liquid coating compositions containing ultraviolet-curable polyethylenically unsaturated material. On curing, the ionic dimer increases the corrosion resistance of the photocured coatings, and is especially useful as a basecoat over thermoplastic molded objects which are coated with a metallic film.

Abstract: An ultraviolet light-curable liquid coating composition for molded plastic objects is disclosed. The composition is a liquid mixture of a polyurethane oligomer polyacrylate and an hydroxy-functional polyacrylate ester. The polyacrylate ester is present in an amount of 5% to 95% of total polyacrylate. The composition is preferably in solution in alcoholic solvent having a solids content of from 40% to 90%. A photoinitiator is included to render the composition curable upon exposure to ultraviolet light.

Abstract: A low temperature curing solution coating composition is disclosed for the protection of solvent-sensitive thermoplastic moldings. In these compositions, a solvent medium consisting essentially of alcoholic solvents has dissolved therein a self-curing solution copolymer of monoethylenically unsaturated monomers containing an ether of an N-methylol functional monomer, especially isobutoxymethyl acrylamide. This solution is catalyzed with from 3% to 12%, based on the weight of the copolymer, of a long chain dialkyl naphthalene disulfonic acid. The catalyzed compositions are stable and cure at 150.degree. F. to 200.degree. F. without damaging the thermoplastic moldings.

Abstract: A low temperature curing solution coating composition is disclosed for the protection of solvent-sensitive thermoplastic moldings. In these compositions, a solvent medium consisting essentially of alcoholic solvents has dissolved therein a self-curing solution copolymer of monoethylenically unsaturated monomers containing an ether of an N-methylol functional monomer, especially isobutoxymethyl acrylamide. This solution is catalyzed with from 0.5% to 2.0%, based on the weight of the copolymer, of sulfuric acid. The catalyzed compositions are stable and cure at 150.degree. F. to 200.degree. F. without damaging the thermoplastic moldings.

Abstract: A method of producing essentially monomeric etherified formaldehyde condensates with a bisphenol having a plurality of formaldehyde-reactive sites is disclosed in which the bisphenol is reacted with at least about 2 moles of formaldehyde per mole of bisphenol in solution in etherifying alcohol in the presence of an insoluble strong acid cation exchange resin. The reaction is carried out at a reaction temperature of from about 30.degree. C. to about 100.degree. C. to simultaneously provide the desired methylolation and etherification without introducing soluble ionic contaminants.

Abstract: Carboxy functional addition-polymerizable monoethylenically unsaturated monomers and their volatile amine salts are disclosed, along with addition copolymers useful in coatings prepared therefrom. Both monomers and polymers decompose on heating. The monomers are bisamides comprised of a monoethylenically unsaturated amide and malonic acid half amide joined through their amide functionalities by a divalent saturated aliphatic group having 1-4 carbon atoms.

Abstract: Aqueous coating compositions which cure on baking and which are especially adapted for cationic electrocoating comprise an aqueous dispersion of a reactive resin solubilized by salt formation, especially an amine-functional copolymer solubilized with an acid, and a water insoluble bisphenol-formaldehyde ether is used as the curing reactant for the reactive resin.

Abstract: There is disclosed an aqueous cationic electrocoating bath adapted to electrodeposit films at the cathode which cure to provide enhanced corrosion protection in which the bath contains an amine-functional resin dispersed therein with the aid of a solubilizing acid together with a polyamine-chromic acid ionic polymer formed by reacting a water insoluble polyamine with from about 50 to about 95 equivalent percent of a chromic acid. The ionic polymer is used in an amount to supply from about 25 to about 1000 parts of detectable chromate per million of said bath.

Abstract: Base neutralized electrodepositable coating compositions which may be utilized in a continuous electrophoretic process without the necessity of employing membrane controls. Such coating compositions are micellar dispersions comprising a resinous vehicle which is blended or admixed with an organic liquid dispersant, said dispersant having limited solubility in water and a limited affinity for the electrodepositable vehicle, and whereby the admixture is subsequently partially neutralized with a base. Such compositions when cured provide for coatings having good salt spray resistance, mar resistance, appearance, and other desirable physical characteristics.

Abstract: A simplified method for the cathodic electrodeposition of polyamine resin from a dispersion thereof in an aqueous electrocoating bath is provided in which the polyamine is selected to be stably dispersible in water in the form of a salt with a solubilizing acid at a pH of from 6.0-7.5, and this polyamine resin is substantially completely neutralized with carbonic acid and dispersed in water in the form of an amine carbonate or bicarbonate. A unidirectional electrical current is passed through an aqueous electrocoating bath containing the amine carbonate or bicarbonate to deposit the polyamine resin at the cathode and cause the release of carbon dioxide. In preferred practice, a proportion of the amine groups in the polyamine resin within the bath, low enough to maintain the pH of the bath at a pH of about 6.

Abstract: Monoethylenic monomers are copolymerized in aqueous emulsion in the presence of about 0.5-5% of a polyanionic phosphate-based emulsifying agent to provide a stable aqueous emulsion which electrodeposits at the anode to form a continuous film of high quality.

Abstract: Polyethylenically unsaturated polyethers are produced by reacting a diepoxide with a stoichiometric proportion of a bisphenol to provide a phenolic OH terminated intermediate which is then reacted with a molar excess of ethylenically unsaturated monoepoxide. These polyethylenic polyethers are copolymerized with monoethylenic monomers in organic solvent solution to provide organic soluble copolymers.