| 摘要 |
PROBLEM TO BE SOLVED: To obtain a coating agent for paper, having high yield onto a paper surface and high improving effects on surface characteristics such as barrier properties or surface strength and excellent in high-speed coating properties. SOLUTION: This coating agent for paper is obtained by compounding (A) 100 pts.wt. polyvinyl alcohol-based resin having >=60mol% saponification degree and >=1.5mPa.s viscosity of a 4% aqueous solution at 20 deg.C with (B) 0.5-50 pts.wt. at least one of a starch derivative and a water-soluble cellulosic derivative having >=10mPa.s viscosity of a 4% aqueous solution at 20 deg.C and (C) 0.001-0.5 pt.wt. acetylene-glycol-based nonionic surfactant. |
