| abstract |
PROBLEM TO BE SOLVED: To provide an allylamine-based polymer which is useful as a paper treating agent having excellent light resistance. SOLUTION: In a polar solvent, a structural unit derived from monoallylamine or diallylamine, and an allylamine-allylsulfonic acid-based copolymer containing a structural unit derived from an allylsulfonic acid compound, and a polar solvent, This is a method for producing the above allylamine-allylsulfonic acid copolymer by copolymerizing each monomer in the presence of a water-soluble azo radical initiator or persulfate radical initiator. |