Title:
【発明の名称】エチレンの溶液重合法の制御
Document Type and Number:
Japanese Patent JP3174333
Kind Code:
B2
Abstract:
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.
Inventors:
Zvoril, Baclav Giyogi
Brown, Stephen Jiyoung
Brown, Stephen Jiyoung
Application Number:
JP50649193A
Publication Date:
June 11, 2001
Filing Date:
September 25, 1992
Export Citation:
Assignee:
Deupon Canada Inc.
International Classes:
C08F2/04; C08F2/06; C08F4/60; C08F4/654; C08F4/685; C08F10/00; C08F10/02; C08F110/02; (IPC1-7): C08F4/654; C08F2/06; C08F10/02
Domestic Patent References:
| JP63304008A | ||||
| JP5647409A |
Other References:
【文献】米国特許4681924(US,A)
Attorney, Agent or Firm:
Heikichi Odashima