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xin yi dai ju xi ting cui hua ji mao jin shu cui hua ji ti xi
Author(s): 
Pages: 5
Year: Issue:  1
Journal: Qilu Petrochemical Technology

Keyword:  显著特征茂金属催化剂催化剂体系聚烯烃催化剂助催化剂重大变革晶体结构低聚物乙基铝支化度;
Abstract: <正> 茂金属催化剂是锆、钛等金属与氧乙基铝低聚物助催化剂的结合物。据《国际现代塑料》1991年10月号称,该催化剂体系是90年代中后期聚烯烃发生重大变革的预兆。它的最显著特征是对PE、PP的链长和侧基支化度有前所未有的控制能力,使对分子量及其分布及共聚单体含量和晶体结构等参数的控制成为可能,更能满足生产的需求。茂金属催化剂与传统的铬基硅载体催化剂和钛基齐格勒—钠塔催化剂不同,它的突出特点是
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