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    • 53. 发明授权
    • Functionalized polymers and process for modifying unsaturated polymers
    • 官能化聚合物和改性不饱和聚合物的方法
    • US4970265A
    • 1990-11-13
    • US329059
    • 1989-03-27
    • Carl L. Willis
    • Carl L. Willis
    • C08F8/00C08F8/04
    • C08F8/00C08F8/04
    • Unsaturated hydrocarbon polymers are hydrogenated in the presence of a catalyst obtained by combining a Group VIII-A metal alkoxide or carboxylate and an alkyl or hydride of a metal selected from Groups I-A, II-A and III-B and then functionalized by contacting the hydrogenated polymer with a functionalizing agent before the hydrogenation catalyst is quenched or otherwise deactivated. The hydrogenation is, generally, accomplished at relatively mild conditions to avoid degradation of the polymer and, in the case of unsaturated copolymers comprising aromatic unsaturation, to avoid any significant hydrogenation of the aromatic unsaturation. Generally, the hydrogen partial pressure employed will be below about 1000 psig and the hydrogenation temperature will be below about 125.degree. C. The hydrogenated polymer may be functionalized by reaction with functionalizing agent select from the group carbon dioxide, ethylene oxide, aldehydes, ketones, carboxylic acid salts and esters, halides, epoxides, sulfur, boron alkoxides, isocyanates, various silicon compounds and the like. Carbon dioxide is a particularly preferred functionalizing agent since the thus functionalized polymer is useful as a modifier in sheet and bulk molding compositions and readily responds to the presence of thickening agents.
    • 不饱和烃聚合物在通过将VIII-A族金属醇盐或羧酸盐与选自IA,II-A和III-B族的金属的烷基或氢化物组合而获得的催化剂存在下氢化,然后通过使氢化 在氢化催化剂淬灭或以其它方式失活之前,使用官能化剂的聚合物。 通常在相对温和的条件下进行氢化以避免聚合物的降解,并且在包含芳族不饱和键的不饱和共聚物的情况下,以避免芳族不饱和度的任何明显氢化。 一般来说,所用的氢气分压将低于约1000psig,氢化温度将低于约125℃。氢化聚合物可以通过与选自二氧化碳,环氧乙烷,醛,酮, 羧酸盐和酯,卤化物,环氧化物,硫,硼醇盐,异氰酸酯,各种硅化合物等。 二氧化碳是特别优选的官能化剂,因为如此官能化的聚合物可用作片材和本体模塑组合物中的改性剂,并且容易响应增稠剂的存在。