| 摘要 |
PROBLEM TO BE SOLVED: To provide a chemical for papermaking having a new composition, without reducing yield even on increasing a used paper-blending rate, and capable of expecting the improvement of paper quality. SOLUTION: This chemical for papermaking is provided by consisting of a water soluble polymer having each of constituting units of a cationic monomer expressed by formula [wherein, R<SB>1</SB>is H or methyl; R<SB>2</SB>, R<SB>3</SB>are each the same or different 1-3C alkyl or alkoxy; A<SB>1</SB>is O or NH; B<SB>1</SB>is 2-4C alkylene; and X<SB>1</SB><SP>-</SP>is an anion], itaconic acid, (meth)acrylic acid and (meth)acrylamide. COPYRIGHT: (C)2010,JPO&INPIT |
