专利详情

专利名称	Process for preparing a terpolymer of tetrafluoroethylene, ethylene and a third monomer
申请号	US84679586A	专利类型	US
公开（公告）号	US4678847A	公开（授权）日	1987.07.07
申请（专利权）人	中国科学院上海有机化学研究所	发明（设计）人	ZHANG YUN-XIANG ; DAI XING-YI ; LU ZHI-KANG ; ZENG SEN
主分类号	C08F210/02	IPC主分类号	C08F210/02
专利有效期	Process for preparing a terpolymer of tetrafluoroethylene, ethylene and a third monomer 至Process for preparing a terpolymer of tetrafluoroethylene, ethylene and a third monomer	法律状态
说明书摘要	The present invention relates to the process for preparing terpolymer of tetrafluoroethylene (TFE), ethylene (E), and a third monomer. According to the present invention, dicarbonate peroxide is used as initiator, 1,1,2-trichloro-1,2,2-trifluoro-ethane as the reaction medium and compounds of molecular formula CnR2n+2, wherein, n=0,1, or 2;R=H, Cl or F, are gaseous chain telomeric agents to control the average molecular weight of copolymers, the formula of third monomer is CF2XCOCF2 X' or wherein X=X'=Cl or F, R1=CF3 or CH3,R2=CF3, CH3 or H, and R3=H or F, usually the molar ratio of TFE to E is from 60:40 to 40:60 with the content of the third monomer being from 0.1% to 10%, based on the total molar amount of TFE and E.