Chlorinated ethylene copolymer latex
AssigneeE. I. Du Pont de Nemours and Company
InventorJames W. Dawes
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Abstract
A stable binder latex that is substantially free from organic solvents useful for preparing coating compositions for application to a substrate which comprises a chlorinated ethylene vinyl acetate copolymer resin containing up to 16% by weight vinyl acetate, optionally containing acrylic acid or methacrylic acid in amounts of from 5 to 15% by weight, a nonionic surfactant that is an alkyl or aryl ester of polyoxyethylene, an alkyl or aryl ester of polyoxyethylene-polyoxypropylene adducts, an alkylphenoxy polyoxyethylene, or an alkylphenoxy polyoxypropylene-polyoxyethylene adduct that coats microscopic particles of the chlorinated ethylene vinyl acetate copolymer resins thereby preventing the particles from coalescing, and water, preferably the composition contains a low molecular weight plasticizer.
Claims11
A stable binder latex substantially free from organic solvents useful for preparing coating composition for application to a substrate which comprises 100 parts by weight of a chlorinated ethylene vinyl acetate copolymer resin containing up to 16% by weight vinyl acetate, wherein the ethylene/vinyl acetate copolymer resin, prior to chlorination, has a melt flow index of at least 1500 g/10 minutes, 6-14 parts by weight per hundred parts chlorinated ethylene vinyl acetate copolymer resin of a nonionic surfactant selected from the group consisting of alkyl or aryl esters of polyoxyethylene, alkyl and/or aryl esters of polyoxyethylene-polyoxypropylene adducts, alkylphenoxy polyoxyethylenes, or alkylphenoxy polyoxypropylene-polyoxyethylene adducts or mixtures thereof that coat microscopic particles of the chlorinated ethylene vinyl acetate copolymer resins thereby preventing the particles from coalescing, and water.
Dependencies are inferred from the claim text.