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1.发明授权
公开(公告)号：US3772263A
公开(公告)日：1973-11-13
申请号：US3772263D
申请日：1971-11-08
IPC分类号： C08F136/06 , C08D1/14 , C08D3/06 , C08D3/08
CPC分类号： C08F136/06 , Y10S526/907 , C08F4/69
摘要： PROCESS FOR THE SELECTIVE CONVERSION OF 1,3-BUTADIENE TO AMORPHOUS POLYBUTADIENE, HAVING 70-98% OF THE VINYL STRUCTURE, IN THE PRESENCE OF A CATALYST CONSISTING OF A MIXTURE OF A MOLYBDENUM HALIDE OR OXYHALIDE WITH A MONOALKOXYDIALKYLALUMINUM COMPOUND, COMPRISING THE IMPROVEMENT OF ADDING TO THE REACTION MEDIUM AT LEAST ONE ESTER OF A CARBOXYLIC ACID. THIS ADDITION ENHANCES THE ACTIVITY OF THE CATALYST WHICH IS SOLUBLE IN THE HYDROCARBON MEDIUM AND PROVIDES FOR A MUCH EASIER AND MORE REPRODUCIBLE. POLYMERIZATION WITH A BETTER CONTROL OF THE POLYMER MOLECULAR WEIGHT AND AN EASIER PURIFICATION OF THE POLYMER.
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