Stable dispersion concentrates

摘要

Dispersion concentrates contain by wt.: (1) a copolymer (A) (1-80%) comprising: (a) linear or cyclic N-vinylcarboxamide units (I) (1-50%); (b) acrylamidoalkylsulfonic acid units (II) (49.99-98.99%); and (c) crosslinking units (0.01-8, especially 0.01-5, %) derived from monomers with at least 2 olefinic double bonds; (2) emulsifier(s) and/or an oil phase (B) (20-90%); and (3) water (C) (0-30%). Dispersion concentrates contain by wt.: (1) a copolymer (1-80%) comprising (a) linear or cyclic N-vinylcarboxamide units of formula (I) (1-50%); (b) acrylamidoalkylsulfonic acid units of formula (II) (49.99-98.99%); and (c) crosslinking units (0.01-8, especially 0.01-5, %) derived from monomers with at least 2 olefinic double bonds; (2) emulsifier(s) and/or an oil phase (20-90%); and (3) water (0-30%). R, R1, R2 = H or 1-30 (especially 1-12)C alkyl or alkenyl; R1R2 = 2-9C alkylene; R3 = H, methyl or ethyl; Z = 1-8C alkylene; and X = an ammonium or alkali(ne earth) ion.