Process for preparation of high molecular weight cis-1,4 polyisoprene and polymerization catalyst therefor
Abstract
Abstract AN IMPROVED PROCESS FOR PREPARATION OF A HIGH-MOLECULAR-WEIGHT POLYISOPRENE CONSISTING PRINCIPALLY OF CIS-1,4 UNITS COMMERCIALLY ADVANTAGEOUSLY AT HIGH YIELD BY USING A NOVEL THREE-COMPONENT CATALYST COMPOSED OF (A) A TITANIUM HALIDE, (B) AN ORGANOALUMINIUM COMPOUND EXPRESSED BY THE FORMULA ALR3, WHEREIN R IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF ALKYL GROUPS, ARYL GROUPS AND CYCLOALKYL GROUPS, AND (C) AN AROMATIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF PHENOL, SUBSTITUTED PHENOLS, HYDROXY-SUBSTITUTED DIPHENYLS, NAPHTHOLS, SAID THREE-COMPONENT CATALYST BEING OBTAINED BY ADDING COMPONENT (A) TO A MIXTURE OF COMPONENT (B) AND COMPONENT (C), AND SUBSTITUTED NAPHTHOLS.
Inventors
- 👤 Kan Mori
- 👤 Hiroharu Ikeda
- 👤 Shigetoshi Hirayanagi
- 👤 Isamu Shimizu
- 👤 Akira Kogure
Bibliographic Details
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