公开(公告)号：US4710554A

公开(公告)日：1987-12-01

申请号：US829846

申请日：1986-02-14

Applicant: Akio Imai ,  Yasushi Okamoto ,  Masatoshi Saito

Inventor： Akio Imai ,  Yasushi Okamoto ,  Masatoshi Saito

IPC: C08F4/00 ,  C08C19/30 ,  C08F4/42 ,  C08F4/48 ,  C08F8/00 ,  C08F8/18 ,  C08F8/20 ,  C08F36/00 ,  C08F136/06

CPC classification number: C08F136/06

Abstract: A polybutadiene having an average 1,2-bond content of 18 to 32% by mole, a branched polymer chain content of 60% by weight or more and a Mooney viscosity at 100.degree. C. of 40 to 90, the viscosity of a 5% by weight concentration solution of this polybutadiene in styrene at 25.degree. C. being 60 to 90 cps, and a process for preparing the polybutadiene comprising starting the polymerization of 1,3-butadiene in an inert hydrocarbon solvent in the presence of a Lewis basic compound and an organolithium compound, the latter compound being in an amount of 0.5 to 3 millimoles per 100 g of 1,3-butadiene, at a temperature selected from the range of 30.degree. to 80.degree. C., carrying out the polymerization by controlling the temperature so that the temperature at the end of polymerization may be 5.degree. to 40.degree. higher than the temperature at the start of polymerization, and adding to the resulting polymer solution a polyfunctional halogen compound in an amount of 0.6 to 1 equivalent per equivalent of the organolithium compound to further react the polymer with the polyfunctional halogen compound.

Abstract translation: 平均1,2-键含量为18〜32摩尔％，支链聚合物链含量为60重量％以上，100℃下门尼粘度为40〜90的聚丁二烯，粘度为5〜 该聚丁二烯在25℃下在苯乙烯中的重量浓度溶液为60至90cps，以及制备聚丁二烯的方法，包括在路易斯碱的存在下在惰性烃溶剂中开始1,3-丁二烯的聚合 化合物和有机锂化合物，后一化合物的量为0.5-3毫摩尔/ 100g 1,3-丁二烯，温度选自30-80℃，通过控制进行聚合 使聚合结束时的温度比聚合开始时的温度高5〜40℃，向所得聚合物溶液中加入0.6〜1当量的多官能卤素化合物， 的 有机锂化合物进一步使聚合物与多官能卤素化合物反应。