| 摘要 |
PROBLEM TO BE SOLVED: To provide a paper coating liquid preventing deterioration of surface characteristics of coated paper by insufficient water retention characteristics and improving viscosity. SOLUTION: The paper coating liquid comprises a paper coating stock solution containing a pigment and a binder as fundamental components and a copolymer. Furthermore, the copolymer is obtained by polymerizing a monomer component containing (A) anα,β-unsaturated carboxylic acid monomer and/or a salt thereof and (B) a monomer represented by general formula (1) (wherein, An is an ethylene oxide or the like; n is a number of 10-300 as the average value; X is one or more kinds selected from the group consisting of a -CH<SB>2</SB>-, a -C(O)- and a -C(O)-NH-; m is 0 or 1; and R is a hydrocarbon group). COPYRIGHT: (C)2008,JPO&INPIT
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