Patent ID: 6767638
Filing Date: 2004-07-27
Classification: B41M,C08F,C08G,C09D,Y10S,Y10T

Abstract:
A cationic core-shell particle suitable for use in formulating ink jet receptive coatings comprising:(A) a polymeric core component, said core component comprising the free radical polymerization reaction product of a mixture comprising: (1) about 45.0% to about 95.0% by total weight of the mixture of a member selected from the group consisting of acrylic esters of alcohols containing from 1 to 22 carbon atoms, methacrylic esters of alcohols containing from 1 to 22 carbon atoms, styrene, substituted styrenes, acrylonitrile, methacrylonitrile, vinyl chloride, vinylidene chloride, vinyl ethers, vinyl esters, N-vinyl amides, acrylamides, methacrylamides, and combinations thereof; (2) about 0.5% to about 30.0% by total weight of the mixture of a member selected from the group consisting of ethylenically unsaturated monomers containing at least one quaternary ammonium group and combinations thereof; (3) about 4.5% to about 35.0% by total weight of the mixture of a member selected from the group consisting of amine-containing ethylenically unsaturated monomers and combinations thereof; and (4) a catalytic amount of polymerization initiator; and (B) a polymeric shell component disposed generally about said core component, said shell component comprising the free radical polymerization reaction product of a mixture comprising: (1) about 70.0% to about 99.5.0% by total weight of the mixture of a member selected from the group consisting of acrylic esters of alcohols containing from 1 to 22 carbon atoms, methacrylic esters of alcohols containing from 1 to 22 carbon atoms, styrene, substituted styrenes, acrylonitrile, methacrylonitrile, vinyl chloride, vinylidene chloride, vinyl ethers, vinyl esters, N-vinyl amides, acrylamides, methacrylamides, and combinations thereof; (2) up to about 30.0% by total weight of the mixture of a member selected from the group consisting of ethylenically unsaturated monomers containing at least one quaternary ammonium group and combinations thereof; (3) about 0.5% to about 30.0% by total weight of the mixture of stabilizer selected from the group consisting of ultraviolet absorbers which contain at least one ethylenically unsaturated group, radical scavengers which contain at least one ethylenically unsaturated group, antioxidants which contain at least one ethylenically unsaturated group, peroxide decomposers which contain at least one ethylenically unsaturated group, and combinations thereof; and (4) a catalytic amount of polymerization initiator; and wherein said stabilizer is covalently bound to said shell component.