摘要
本文报道Ni(naph)_2-n-C_4H_9Li-BF_3·OEt_2催化体系对丁二烯的聚合活性.发现.只有Ni(naph)_2与n-C_4H_9Li二元陈化方式有较好的聚合活性.聚合物的特性粘度[η]和5％苯乙烯的动力粘度(η_(c.p)均低.顺式-1,4结构含量约为94％.几乎不生成凝胶。
The catalytic activity of Ni(naph)_2-n-C_4H_9Li-BF_3·OEt_2 catalyst system in polymerization of bu- tadiene was studied. The results showed that the catalyst only obtained by ageing Ni and Li two compo- nents has higher polymerizing activity. While changing the molar ratio of Li/Ni and Li/B within a cer- tain range,the Mooney viscosity values (ML)of the products are about 29-45,the intrinsic viscosity (η) is lower, the viscosities, which of 5% solution of them in styrene solvent measured at 25℃ by means of Cannon-Fenske viscometer,are about 63-116 CPS. The cis-1, 4 content is generally about 94%. The gel content is very low. This new type of polybutadiene can be used as modifier of polystyrene resin.
出处
《弹性体》
CAS
1993年第1期15-18,共4页
China Elastomerics
关键词
丁二烯
镍催化剂
聚丁二烯
Butadiene
Nickel Catalyst
Polybutadiene
