| 发明名称 |
A PROCESS FOR PRODUCING COPOLYMERS OF ETHYLENE WITH ALPHA-OLEFINS |
| 摘要 |
Copolymers of ethylene and an alpha -olefin of formula CH2 = CHR (in which R represents a straight or branched chain C1-C6 alkyl group) or copolymers of ethylene, said alpha -olefin and a linear of cyclic diene or higher polyene having non-conjugated double bonds are prepared by polymerization in an inert organic solvent and in the presence of. (a) an organoaluminium compound of formula R min nAlX(3-n) (in which R min represents a C1-C20 hydrocarbon group, X represents a halogen atom or an alkoxy group and n is a number such that 1 </= n </= 3), (b) a trivalent to pentavalent vanadium compound soluble in an inert organic solvent, and (c) as a catalyst activator, an ester of a halogenated organic acid. The polymerization is effected in two reactors connected in series whilst keeping the reactors at different temperature levels. The copolymers produced have excellent processability. |
| 申请公布号 |
DE3278690(D1) |
申请公布日期 |
1988.07.28 |
| 申请号 |
DE19823278690 |
申请日期 |
1982.02.04 |
| 申请人 |
SUMITOMO CHEMICAL COMPANY, LIMITED |
发明人 |
HARADA, HIROYUKI;TAKAO, HIROYOSHI;YAMAMOTO, KEISAKU |
| 分类号 |
C08F2/00;C08F4/00;C08F4/60;C08F4/639;C08F4/68;C08F210/00;C08F210/16;C08F210/18;C08F255/02;(IPC1-7):C08F210/16 |
主分类号 |
C08F2/00 |
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