초록 ▼

A process for preparing a water-soluble polymer dispersion is here provided which is characterized by polymerizing water-soluble monomers of 5 to 1000 mole % of a cationic monomer represented by formula (I) defined herein, 0 to 50 mole % of another cationic monomer represented by formula (II) define

A process for preparing a water-soluble polymer dispersion is here provided which is characterized by polymerizing water-soluble monomers of 5 to 1000 mole % of a cationic monomer represented by formula (I) defined herein, 0 to 50 mole % of another cationic monomer represented by formula (II) defined herein and 0 to 95 mole % of (meth)acrylamide in the presence of 1 to 10% by weight of an organic high-molecular multivalent cation based on the total weight of the monomers in a multivalent anionic salt aqueous solution having a concentration of 15% by weight or more.

대표청구항 ▼

A process for the production of a water-soluble polymer dispersion which is characterized by polymerizing water-soluble monomers of 5 to 100 mole % of a cationic monomer represented by the following formula (I), 0 to 50 mole % of another cationic monomer represented by the following formula (II) and

A process for the production of a water-soluble polymer dispersion which is characterized by polymerizing water-soluble monomers of 5 to 100 mole % of a cationic monomer represented by the following formula (I), 0 to 50 mole % of another cationic monomer represented by the following formula (II) and 0 to 95 mole % of (meth)acrylamide in the presence of 1 to 10% by weight of an organic high-molecular multivalent cation comprising a water soluble polymer containing at least a monomer of formula (II) based on the total weight of the monomers in a multivalent anionic salt aqueous solution having a concentration of 15% by weight or more: [Figure] (I) wherein R1 is H or CH3; each of R2 and R3 is an alkyl group having 1 to 3 carbon atoms; A is an oxygen atom or NH; B is an alkylene group having 2 to 4 carbon atoms or a hydroxypropylene group; and X-is an anionic counterion, [Figure] (II) wherein R4 is H or CH3; each of R5 and R6 is an alkyl group having 1 or 2 carbon atoms; R7 is H or an alkyl group having 1 or 2 carbon atoms; A′is an oxygen atom or NH; B′is an alkylene group having 2 to 4 carbon atoms or a hydroxypropylene group; and X-is an anionic counterion.