PRETREATMENT OF TRANSITION METAL CATALYST

Title:

PRETREATMENT OF TRANSITION METAL CATALYST

Document Type and Number:

Japanese Patent JPH01110510

Kind Code:

A

Abstract:

PURPOSE:To enable pretreatment of a highly active transition metal catalyst without lowering the performance, by using a hydrocarbon solvent having a content of specific chlorinated ethers lower than a specific level. CONSTITUTION:A transition metal catalyst produced by supporting a titanium compound on a magnesium compound is treated with a small amount of an olefin in an inert hydrocarbon solvent and then used in the bulk polymerization or vapor-phase polymerization of olefin essentially in the absence of the inert hydrocarbon solvent. In the above process, the transition metal catalyst is pretreated with an inert hydrocarbon solvent (e.g., heptane) containing <=10ppm of chlorinated ethers of formula (R<1> is hydrocarbon group).

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Inventors:

ASANUMA TADASHI
ITO MITSUGI

Application Number:

JP26820587A

Publication Date:

April 27, 1989

Filing Date:

October 26, 1987

Export Citation:

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Assignee:

MITSUI TOATSU CHEMICALS

International Classes:

B01J27/138; C08F4/60; C08F4/64; C08F4/72; C08F10/00; (IPC1-7): B01J27/138; C08F4/64; C08F10/00

Domestic Patent References:

JPS57131204A	1982-08-14
JPS59140206A	1984-08-11
JPS5928754A	1984-02-15
JPS6327511A	1988-02-05
JPS63202604A	1988-08-22
JPS62268204A	1987-11-20

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