高等学校化学学报 ›› 2002, Vol. 23 ›› Issue (1): 167.

• 研究简报 • 上一篇    下一篇

单茂钛催化剂催化丁烯-1聚合及高分子量无规聚丁烯-1的合成与表征

黄启谷1,2, 林尚安2, 祝方明2, 伍青2   

  1. 1. 中国石油化学总公司石油化工科学研究院, 北京 100083;
    2. 中山大学高分子研究所, 广州 510275
  • 收稿日期:2001-02-27 出版日期:2002-01-24 发布日期:2002-01-24
  • 通讯作者: 黄启谷(1964年出生),男,博士,主要从事环保型优质高分子材料的合成与应用研究.E-mail:qgh96@yahoo.com.cn E-mail:qgh96@yahoo.com.cn
  • 基金资助:

    国家自然科学基金(批准号:29634010)资助

Synthesis and Characterization of High Molecular Weight Atactic Polybutene-1 and Butene-1 Polymerization Catalyzed by Titanocene/MAO Catalyst

HUANG Qi-Gu1,2, LIN Shang-An2, ZHU Fang-Ming2, WU Qing2   

  1. 1. Research Institute of Petrochemistry and Process, SINOPEC, Beijing 100083, China;
    2. Institute of Polymer Science, Zhongshan University, Guangzhou 510275, China
  • Received:2001-02-27 Online:2002-01-24 Published:2002-01-24

关键词: 单茂钛催化剂, 无规聚丁烯-1, 立体选择性

Abstract: 5-Pentamethylcyclopentadienyl) titanium triallyioxide[Cp*Ti(OCH2-CH=CH2)3 was used as the catalyst precursor for the synthesis of polybutene 1, methylalumiunoxane(MAO) as cocatalyst. The effects of the ratio of n (Al) to n (Ti), polymerization temperature, and concentration of Ti on catalytic activity, molecular weight and chain structure were investigated in detail. The ether soluble fraction of the polybutene-1 was characterized with 13 C NMR, DSC, WAXD, and GPC. The results indicate that the polymers thus obtained are atactic and regioirregular, the weight average molecular weight of these polymers lies in the range of 3.0×105 to 7.0×105. Increasing the polymerization temperature can result in a decrease in the polymer molecular weight. But the molecular weight varies slightly with the ratio of n (Al) to n (Ti). The catalytic activity tends to decrease with the increase in polymerization temperature. was used as the catalyst precursor for the synthesis of polybutene 1, methylalumiunoxane(MAO) as cocatalyst. The effects of the ratio of n (Al) to n (Ti), polymerization temperature.The catalytic act ivity tends to decrease w ith t he increase in polym erizat ion tempera-ture.

Key words: Titanocene catalyst, Atactic polybutene-1, Stereo selectivity

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