Manufacturing method and method of manufacturing the paper additives and additives for papermaking papermaking.

摘要

PROBLEM TO BE SOLVED: To provide a papermaking additive capable of improving drainage with a relatively small amount added, that is, without causing problems of cost increase or texture deterioration of paper products.;SOLUTION: A papermaking additive contains: a cationic polymer obtained by polymerization of a cationic vinyl monomer represented by the general formula (I) in the figure, a nonionic vinyl monomer, and a crosslinkable vinyl monomer; and 0.01 to 10 mol% of carboxylic acids having two or more carboxyl groups in each molecule. (In the formula, R¹ is H or CH₃, A is O or NH, R² is an optionally hydroxyl group-substituted alkyl group having 2-4 carbon atoms, R³ is H or an alkyl group having 1-3 carbon atoms, R⁴ is H, an optionally hydroxyl group-substituted alkyl group having 1-3 carbon atoms or a benzyl group, and X^- is a halogen ion, a sulfonate ion, a methyl sulfate ion or a hydroxide ion.);COPYRIGHT: (C)2015,JPO&INPIT