FIELD: polymers.
SUBSTANCE: claimed method includes polymerization of one or more water soluble monomers in aqueous salt solution in presence of polymer dispersant, wherein polymer dispersant represents copolymer of monomer (M) mixture containing at least one cationic monomer and at least one monomer, such as tetrahydrofurfuryl acrylate, tetrahydrofurfuryl methacrylate or monomer of general formula I wherein R1 is hydrogen or methyl; R2 is hydrogen or C1-C2-alkyl; R3 is hydrogen, C1-C4-alkyl, phenyl or benzyl; n = 1-4; x = 1-50, and monomer (M) mixture essentially having no water insoluble monomers; and/or polymer dispersant may be obtained by monomer (M) mixture polymerization in reaction mixture essentially having no organic solvents. Also disclosed are aqueous polymer dispersion and application thereof as retention agent in paper production, as thickening agent or agent for soil amelioration. Method for paper production from aqueous suspension includes addition of abovementioned polymer dispersion.
EFFECT: polymer dispersion of high stability, high active substance content, low cationic charge, and good retention characteristics.
Authors
Dates
2006-08-10—Published
2003-05-06—Filed