초록 ▼

An air-dry acrylic lacquer capable of forming a low-color, non-yellowing finish with excellent adhesion to either lacquer or enamel-coated substrates is provided. The lacquer is composed primarily of poly(methyl methacrylate), a methyl methacrylate/ethyl acrylate/t-butylaminoethyl methacrylate terpo

An air-dry acrylic lacquer capable of forming a low-color, non-yellowing finish with excellent adhesion to either lacquer or enamel-coated substrates is provided. The lacquer is composed primarily of poly(methyl methacrylate), a methyl methacrylate/ethyl acrylate/t-butylaminoethyl methacrylate terpolymer, cellulose acetate butyrate, and a polyester plasticizer. Ordinarily, the lacquer is nonpigmented and provides a clear, glossy and durable film useful as the clear coat of a color coat/clear coat automotive finish.

대표청구항 ▼

A clear coating composition consisting essentially of 5-40% by weight of a film-forming binder and 60-95% by weight of volatile organic solvents; wherein the binder consists essentially of: (a) about 0-65% by weight, based on the weight of the binder, of one or more polymers selected from the group

A clear coating composition consisting essentially of 5-40% by weight of a film-forming binder and 60-95% by weight of volatile organic solvents; wherein the binder consists essentially of: (a) about 0-65% by weight, based on the weight of the binder, of one or more polymers selected from the group consisting of poly(methyl methacrylate) and other copolymers of methyl methacrylate having a relative viscosity of about 1.17 to 1.20 measured at 25°C. on a 0.5% polymer solids solution using dichloroethylene solvent; (b) about 0-25% by weight, based on the weight of the binder, of cellulose acetate butyrate having a viscosity of about 1-20 seconds and a butyryl content of 30-55% by weight; (c) about 10-40% by weight, based on the weight of the binder, of a polyester plasticizer comprising the reaction product of a polyol and an organic dicarboxylic acid or an anhydride of an organic dicarboxylic acid having an acid number of 0.1-10; (d) about 0-10% by weight, based on the weight of the binder, of a phthalate plasticizer; and (e) about 15-80% by weight, based on the weight of the binder, of a terpolymer of about 20-90% by weight of units of methyl methacrylate, 2-40% by weight of units of ethyl acrylate, and 2-60% by weight of units of t-butylaminoethyl methacrylate; wherein (a), (b), (c), (d), and (e) total 100%.