Coatings containing plastic polymeric pigments

Claim 2

A coated paper comprising A. a paper substrate having intimately adhered thereto; B. an improved coating comprising a binding amount of a binder and an opacifying amount of a pigment, provided that (1) the ratio of binder to pigment is in the range from about 1.3 to about 12 volume parts of binder to about 38.8 volume parts of pigment and (2) at least a portion of said pigment being in the form of discrete, substantially spheroidal, water- and binder-insoluble, non-film forming, polymeric plastic particles having an average diameter of from about 0.3 to about 0.8 micron, said portion of plastic particles constituting at least about 1 volume percent based on total pigment and being sufficient to impart improved coating properties as compared to a coating containing only inorganic pigment; and C. printing applied to a side of the resulting coated paper substrate on which said coating has been previously applied.

Claim 3

The coated paper according to claim 1 wherein ratio of binder to pigment is from about 1.3 to about 12 volume parts binder to about 38.8 volume parts of pigment.

Claim 4

The coated paper according to claim 2 wherein the plastic particles comprise a substantially colorless, thermoplastic, addition polymer.

Claim 5

The coated paper according to claim 2 wherein the polymer consists essentially of (a) from about 40 to about 100 weight percent of an ethylenically unsaturated monomer selected from the group consisting of monovinylidene carboxylic aromatic monomers; esters of α,β-ethyleneically unsaturated carboxylic acids which polymerize to form non-film forming polymers; ethylenically unsaturated esters of non-polymerizable carboxylic acids which polymerize to form non-film forming polymers; α,β-ethylenically unsaturated nitriles; halogenated aliphatic α-monoolefins, and mixtures thereof; (b) from 0 to 45 weight percent of an ethylenically unsaturated soft monomer selected from the group consisting of conjugated aliphatic dienes, alkyl acrylates, unsaturated esters of saturated carboxylic acid which polymerize to form film-forming polymers, esters and half esters of α,β-ethylenically unsaturated polycarboxylic acids, vinylidene chloride, and mixtures thereof and (c) from 0 to about 25 weight percent of α,β-ethylenically unsaturated carboxylic acid monomer.

Claim 6

The coated paper according to claim 3 wherein the polymer consists essentially of from about 75 to about 100 weight percent of ethylenically unsaturated monomer selected from the group consisting of monovinylidene carbocyclic aromatic monomer, methyl methacrylate, vinyl chloride, vinyl benzoate, acrylonitrile and mixtures thereof, from 0 to about 20 weight percent of ethylenically unsaturated soft monomer selected from group consisting of conjugated aliphatic dienes, alkyl acrylates, unsaturated esters of saturated carboxylic acids which polymerize to form film-forming polymers and mixtures thereof and from 0 to about 5 weight percent of α,β-ethylenically unsaturated carboxylic acid monomer having from 3 to 8 carbon atoms.

Claim 7

The coated paper according to claim 2 wherein the polymer consists essentially of from about 75 to about 99 weight percent of monovinylidene carbocyclic aromatic monomer, from 0 to about 20 weight percent of acrylonitrile and from about 1 to about 5 weight percent of α,β-ethyleneically unsaturated carboxylic acid selected from the group consisting of acrylic acid, methacrylic acid, itaconic acid, maleic acid, maleic anhydride and mixtures thereof.

Claim 8

The coated paper according to claim 5 wherein monovinylidene carbocyclic aromatic monomer is styrene.

Claim 9

The coated paper according to claim 5 wherein at least 50 volume percent of the plastic particles have diameters in the range from about 0.2 to about 0.9 micron.

Claim 10

The coated paper according to claim 5 wherein the binder is selected from the group consisting of modified starch, polyvinyl acetate and styrene/butadiene copolymer.

Claim 11

The coated paper according to claim 5 wherein the pigment consists of at least about 1 weight percent of plastic particles and a remaining portion of inorganic pigment.

Claim 12

The coated paper according to claim 10 wherein the inorganic pigment is clay.

Claim 13

The coated paper of claim 1 wherein the polymer is a polymer of methyl methacrylate.

Claim 14

The coated paper of claim 12 wherein the polymer is a methyl methacrylate/butyl acrylate/methacrylic acid/acrylic acid copolymer.

Claim 15

The coated paper of claim 1 wherein the polymer is a polymer of vinyl benzoate.

Claim 16

The coated paper of claim 14 wherein the polymer is a vinyl benzoate/acrylic acid copolymer.

Claim 17

The coated paper of claim 1 wherein the ratio of binder to pigment is from about 6 to about 10 volume parts of binder to about 38.8 volume parts of pigment.