abstract |
The present invention is derived from methacrylic acid, butyl acrylate, styrene, styrene sulfonic acid or a salt thereof, vinyl benzoic acid or a salt thereof, 2-acrylamide-2-methane sulfonic acid or a salt thereof, and N-vinylpyrrolidone alone. Water-soluble or water-dispersed between neutral or near-neutral pH, ie between 5.5 and 9.5, containing at least one random copolymer, including monomers selected in or in combination with. Regarding the field of copolymers of sex. [Selection diagram] None |