Paper coating composition

摘要

A paper coating composition is disclosed, which comprises: (A) a pigment, and (B) a copolymer emulsion prepared by polymerizing a monomer mixture containing: (i) 5 to 40 wt % of an alpha -olefin of the formula: CH2=CH-R1 wherein R1 is a hydrogen atom or an alkyl group having 1 to 12 carbon atoms; (ii) 30 to 90 wt % of a vinyl ester of the formula: <IMAGE> wherein R2, R3 and R4 are each a hydrogen atom or an alkyl group having 1 to 18 carbon atoms; (iii) 1 to 30 wt % of at least one unsaturated carboxylic acid ester selected from the group consisting of an acrylic acid ester in which the alkyl moiety thereof has 1 to 18 carbon atoms and a methyacrylic acid or dibasic unsaturated carboxylic acid ester in which the alkyl moiety thereof has 1 to 18 carbon atoms; and (iv) 0.1 to 10 wt % of an unsaturated carboxylic acid. The paper coating composition of the invention provides improved printability and printing quality and is particularly useful for gravure printing.