公开(公告)号：EP0500575A4

公开(公告)日：1993-03-10

申请号：EP90915725

申请日：1990-10-30

申请人： COMMONWEALTH SCIENTIFIC AND INDUSTRIAL RESEARCH ORGANIZATION

发明人： RIZZARDO, EZIO ,  MEIJS, GORDON, FRANCIS ,  THANG, SAN, HOA

IPC分类号： C07C409/16 ,  C07C409/18 ,  C07C409/38 ,  C07C409/40 ,  C08F2/38 ,  C08F4/34

CPC分类号： C07C409/38 ,  C07C409/16 ,  C07C409/18 ,  C07C409/40 ,  C08F2/38 ,  C08F4/34

摘要： A process for the production of lower molecular weight polymers by free radical polymerization, characterized in that there is added to the polymerization system a compound of general formula (I), wherein R is hydrogen, chlorine, an alkyl group, or a group capable of activating the vinylic carbon towards free radical addition; R is hydrogen or an optionally substituted alkyl, alkenyl, aryl, cycloalkenyl or cycloalkyl group or the group -COZ, where Z is R or OR , where R is hydrogen or an optionally substituted alkyl, alkenyl or aryl group. X is a hydrogen atom, an alkyl or aryl group, or a halogen, and the two X groups may be the same or different. The invention also includes polymers or oligomers made by the process and novel compounds of general formula (I) as defined above.