发明名称 |
CONTROL OF A SOLUTION PROCESS FOR POLYMERIZATION OF ETHYLENE |
摘要 |
A solution process for the preparation of high molecular weight polymers of alpha-olefins selected from the group consisting of homopolymers of ethylene and copolymers of ethylene and C3-C12 higher alpha-olefins is disclosed. Ethylene and/or mixtures of ethylene and C3-C12 higher alpha-olefins are polymerized under non-isothermal conditions in a tubular reactor or in a system of reactors which operate under different conditions, in the presence of a catalytic amount of a titanium-containing coordination catalyst in an inert solvent at a temperature in excess of 105 DEG C. The improvement is characterized in that: (a) the catalyst is activated with a solution of a mixture of aluminum alkyl and alkoxy aluminum alkyl in inert solvent; and (b) the process is controlled by adjusting the ratio of aluminum alkyl to alkoxy aluminum alkyl in the mixture of (a). The aluminum alkyl is of the formula AlRnX3-n and the alkoxy aluminum alkyl is of the formula AlR'mOR''3-m, in which each of R, R' and R'' is alkyl or aryl of 1-20 carbon atoms, X is halogen, n is 2-3 and m is 0-3. |
申请公布号 |
WO9307189(A1) |
申请公布日期 |
1993.04.15 |
申请号 |
WO1992CA00420 |
申请日期 |
1992.09.25 |
申请人 |
DU PONT CANADA INC. |
发明人 |
ZBORIL, VACLAV, GEORGE;BROWN, STEPHEN, JOHN |
分类号 |
C08F2/04;C08F2/06;C08F4/60;C08F4/654;C08F4/685;C08F10/00;C08F10/02;C08F110/02 |
主分类号 |
C08F2/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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