Coatings containing plastic pigments

Claim 1

A coated paper comprising a paper substrate and a coating comprising from about 2 to about 17 parts by weight of a binder selected from the group consisting of starch, modified starch, soybean protein, casein, latex of styrene/butadiene copolymer, latex of butadiene/acrylonitrile copolymer, latex of butadiene/methyl methacrylate copolymer, latex of vinyl chloride/vinylidene chloride copolymer, polybutadiene, poly(methyl methacrylate), poly(vinyl acetate), poly(chloroprene), poly(vinyl chloride) and poly(butyl methacrylate) and about 38.5 parts by weight of pigment in the form of discrete, substantially spheroidal, water-insoluble, substantially colorless, thermoplastic, resinous organic polymer particles having an average diameter of from about 0.3 micron to about 0.8 micron, said organic polymer being a polymer selected from the group consisting of homopolymers of monovinylidene aromatic monomer and copolymers of monovinylidene aromatic monomer and up to 5 weight percent of an Alpha , Beta -ethylenically unsaturated carboxylic acid selected from the group consisting of acrylic acid, methacrylic acid, itaconic acid, maleic acid and fumaric acid, and copolymers of monovinylidene aromatic monomer, up to 20 weight percent of a copolymerizable monomer selected from the group consisting of butadiene, isoprene, methyl acrylate, ethyl acrylate, propyl acrylate, butyl acrylate, and acrylonitrile and up to 5 weight percent of said Alpha , Beta -ethylenically unsaturated carboxylic acid.