公开(公告)号：US3773854A

公开(公告)日：1973-11-20

申请号：US3773854D

申请日：1970-12-31

申请人： BRIDGESTONE TIRE CO LTD

发明人： FURUKAWA J ,  ISEDA Y ,  HAGA K ,  KATAOKA N

IPC分类号： C08F236/04 ,  C08L21/00 ,  C08D1/14

CPC分类号： C08F236/04 ,  C08L21/00 ,  C08F4/6421 ,  C08F4/642 ,  C08F4/68 ,  C08F4/685

摘要： NOVEL ALTERNATING COPOLYMERS OF CONJUGATED DIENES AND CONJUGATED POLAR VINYL MONOMERS, WHEREIN THE CONJUGATED DIENE UNIT IS CONNECTED IN A TRANS-1,4 FORM AND THE CONJUGATED POLAR VINYL MONOMER UNIT AND THE CONJUGATED DIENE UNIT ARE BONDED ALTERNATELY, ARE PRODUCED EFFICIENTLY BY COPOLYMERIZING THESE MONOMERS IN A NON-AQUEOUS MEDIUM AT RATHER LOW TEMPERATURE BY USING A CATALYST SYSTEM PREPARED BY ADMIXING A SELECTED TRANSITION METAL COMPOUNDS AND AN ORGANOALUMINUM HALIDE IN THE PRESENCE OF THE POLAR VINYL MONOMER OR ANOTHER SELECTED LEWIS BASE. THE LATERNATING COPOLYMER HERE OBTAINED HAS A REGULAR STRUCTURE, ON THIS ACCOUNT, FOR EXAMPLE, THE BUTADIENE/ACRYLONITRILE ELASTIC ALTERNATING COPOLYMER CAN BE ORIENTED AND CRYSTALLIZED UNDER A HIGHLY STRETCHED CONDITION.