| abstract |
The present invention relates to a copolymer capable of forming a viscous aqueous solution having a desired viscosity in the presence of an electrolyte, particularly a polyelectrolyte, a thickener containing the copolymer, and a cosmetic comprising the copolymer. The purpose is to provide. The present invention provides (A) an acrylic ester represented by the general formula [1], and (B) any functional group selected from the group consisting of a polymerizable unsaturated group, a carboxyl group, a sulfo group, and a phosphoric acid group. And the ratio (weight ratio) between the acrylic ester (A) and the compound (B) is (A) / (B) = 9.0 / 91.0- The present invention relates to a copolymer of acrylic acid ester (A) / compound (B), 28.5 / 71.5, a thickener containing the copolymer, and a cosmetic blended with the copolymer. General formula [1]: (In formula, R1 represents a hydrogen atom or a C1-C6 alkyl group, and m represents the integer of 2-4.) |