文献类型：期刊文章

作　　者：陈耀峰[1] 张一烽[1] 沈之荃[1] 孙维林[1] 陈林深[2]

机构地区：[1]浙江大学高分子科学与工程系,杭州310027 [2]浙江大学中心实验室,杭州310028

出　　处：《高分子学报》

基　　金：国家自然科学基金;北京燕山石化集团公司研究院!(基金号 2 98440 0 2 ) ;浙江省自然科学基金!(基金号 2 980 2 4);教育部!( 4 1

年　　份：2000

卷　　号：10

期　　号：2

起止页码：239-241

语　　种：中文

收录情况：AJ、BDHX、BDHX1996、CAS、CSCD、CSCD2011_2012、IC、JST、PL、RCCSE、SCI-EXPANDED(收录号：WOS:000086490000024)、SCIE、SCOPUS、WOS、ZGKJHX、核心刊

摘　　要：Calix[4]titanium in combination with Al(iBu) 3 formed a homogeneous catalyst system.This homogeneous catalyst system was found to be an active catalyst system for the polymerization of ethylene.The effects of Al/Ti molar ratio,solvent,concentration of catalyst and polymerization temperature on the polymerization were studied in detail.Polyethylene having M W of 9.4×10 5 is obtained under following conditions:[Ti]=5×10 -4 mol/L,Al/Ti=20,T=35℃,t=1h,ethylene pressure=1 0MPa.The catalytic activity is 60 7kg PE/mol Ti·h.Other alkyl aluminums as cocatalysts were also investigated.For various alkyl aluminums the catalytic activity decreased in the following order:AlEt 3>Al(iBu) 3>AlEt 2Cl>Al(iBu) 2Cl.

关 键 词：芳烃钛 三异丁基铝 乙烯 聚合  聚乙烯

分 类 号：O631]