A copolymer having excellent water resistance and sebum resistance while also exhibiting high washability is provided. Also provided is a composition and cosmetic material containing the copolymer. The copolymer is generally polymerized from a monomer composition comprising: (A) a carbosiloxane dendrimer monomer having a radically polymerizable organic group; and (B) an unsaturated monomer having at least one acidic group or a salt thereof per molecule; wherein monomer (A) is present in the monomer composition in an amount greater than or equal to 30 wt. % relative to the weight of the monomer composition, and a weight ratio (A/B) of monomer (A) to monomer (B) is from 1.0 to 20.0.
本研究提供了一种共聚物,它具有优异的耐
水性和耐皮脂性,同时还表现出较高的耐洗性。此外,还提供了一种含有该共聚物的组合物和化妆品材料。该共聚物一般由单体组合物聚合而成,单体组合物包括:(A) 具有可辐射聚合有机基团的碳
硅氧烷树枝状聚合物单体;和 (B) 每分子具有至少一个酸性基团或其盐的不饱和单体;其中单体 (A) 在单体组合物中的含量大于或等于单体组合物重量的 30%,且单体 (A) 与单体 (B) 的重量比 (A/B) 为 1.0 至 20.0。