Water-soluble amphoteric copolymer, production method thereof, and application thereof
申请人:Nippon Shokubai Co.,Ltd.
公开号:EP1741750A2
公开(公告)日:2007-01-10
To provide: a water-soluble amphoteric copolymer having excellent hydrophilicity and high adsorption capability, and capable of exhibiting dramatically excellent dispersibility even under high hardness conditions and being preferably used in a detergent composition application, for example; an application thereof; and a production method of such a water-soluble amphoteric copolymer. A water-soluble amphoteric copolymer produced by a copolymerization of a monomer component comprising a cationic monomer (a), an anionic monomer (b), and an unsaturated polyalkylene glycol monomer (c), wherein the monomer (b) is a carboxyl group-containing monomer and/or a sulfonic acid group-containing monomer (d), and the monomer (b) is more than 50% by mole relative to 100% by mole of a total amount of the monomers (a), (b), and (c) if the monomer (b) consists of the carboxyl-group containing monomer, and at least one species of monomer among the monomers (a), (d), and (c) is 30% by mole or less relative to 100% by mole of a total amount of the monomers (a), (d), and (c) if the monomer (b) comprises the sulfonic acid group-containing monomer (d).
旨在提供:一种水溶性两性共聚物,它具有优异的亲水性和较高的吸附能力,即使在高硬度条件下也能表现出显著优异的分散性,最好用于洗涤剂组合物等应用中;其应用;以及这种水溶性两性共聚物的生产方法。一种水溶性两性共聚物,由阳离子单体 (a)、阴离子单体 (b) 和不饱和聚亚烷基二醇单体 (c) 组成的单体组分共聚制得,其中单体 (b) 是含羧基的单体和/或含磺酸基的单体 (d),单体 (b) 相对于单体 (a)、如果单体(b)包括含羧基的单体,则单体(a)、(d)和(c)中的至少一种单体相对于单体(a)、(d)和(c)总量的 100%(以摩尔计)为 30%或更少;如果单体(b)包括含磺酸基的单体(d),则单体(d)相对于单体(a)、(d)和(c)总量的 100%(以摩尔计)为 30%或更少。