申请人:Rohm and Haas Company
公开号:US04435539A1
公开(公告)日:1984-03-06
Carboxylic acid/hydroxyalkyl ester copolymers of about 100,000-500,000 molecular weight are solubilized and stabilized to render the aqueous solutions thereof resistant to gelation while maintaining the viscosity of the solutions at manageable levels, by partially neutralizing the copolymers. Typical copolymers contain (a) acrylic or methacrylic acid and (b) hydroxyethyl or hydroxypropyl acrylate or methacrylate, in a monomer weight ratio (a:b) of 95:5 to 50:50, and are neutralized 25-75%. The copolymers are useful as viscose dope modifiers in the production of high fluid holding rayon alloy fibers.
分子量约为100,000-500,000的羧酸/羟基烷基酯共聚物被部分中和以增强其水溶液的稳定性,同时保持溶液的粘度在可管理的水平,从而防止凝胶形成。典型的共聚物包含(a)丙烯酸或甲基丙烯酸和(b)羟乙基或羟丙基丙烯酸或甲基丙烯酸,在单体重量比(a:b)为95:5至50:50,中和25-75%。这些共聚物在生产高流体保持的人造丝合金纤维的粘胶浆改性剂中很有用。