%0 Journal Article
%T THE EFFECT OF MIXED ELECTRON DONOR CMMS/DPCS ON POLYMERIZATION OF PROPENE<br>混合外给电子体环己基甲基二甲氧基硅烷/二苯基二氯硅烷对丙烯聚合的影响
%A CAI Shi-mian
%A LU Hong-lan
%A ZHANG Jun
%A XIAO Shi-jing
%A <br>蔡世绵
%A 陆宏兰
%A 张军
%A 肖士镜
%J 高分子学报
%D 1993
%I 
%X The effect CMMS (cyclohexylmethyl dimethoxysilane/DPCS (diphenyl dichloridesilane) as electron donor on the polymerization of propene was discussed. The solvent polymerization of propene was carried out in 60 ℃ at 1. 04×105 Pa. It was found that the catalyst activity has gone up by 20 per cent when CMMS/DPCS=1/3 under the given condition . The concentration of active titanium center (C) was determined with kinetic-molecular weight method. It turns out that the active titanium centers do not increase by using mixedelectron donor CMMS/DPCS as compare with CMMS as electron donor but can increase Kp by 20% In addition,average-chain length can be achieved in five minutes with CMMS/DPCS.So polymer isotacticity index does not change with the time of polymerization.
%K 催化剂
%K 活性
%K 聚丙烯
%K CMMS
%K DPCS
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=6579068328FE643F&jid=15971983683C7643EE80F1CE621DEB60&aid=E73F16FE3399BB920F8D5B4B6B45A202&yid=D418FDC97F7C2EBA&iid=B31275AF3241DB2D&sid=EED44B83FAB71309&eid=FA98B938D085B826&journal_id=1000-3304&journal_name=高分子学报&referenced_num=0&reference_num=2