JPS57126805A - Production of ethylene polymer having wide molecular weight distribution - Google Patents
Production of ethylene polymer having wide molecular weight distributionInfo
- Publication number
- JPS57126805A JPS57126805A JP1403681A JP1403681A JPS57126805A JP S57126805 A JPS57126805 A JP S57126805A JP 1403681 A JP1403681 A JP 1403681A JP 1403681 A JP1403681 A JP 1403681A JP S57126805 A JPS57126805 A JP S57126805A
- Authority
- JP
- Japan
- Prior art keywords
- polymer
- stage
- molecular weight
- catalyst
- polymer production
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
PURPOSE: To obtain a polymer having a wide molecular weight distribution and being excellent in uniformity, etc., by polymerizing ethylene in multiple stages by use of a high-activity-sustaining catalyst and setting the average polymer production per unit solid catalyst in each stage at a specified range.
CONSTITUTION: A catalyst system consisting of an organometallic compound component and a high-activity supported Ziegler catalyst having a polymer production capacity of above 20,000 times by weight and having a sufficient residual activity at a point where 15.000 times by weight of polymer has been produced, is used in the (co)polymn of ethylene. Then, the purpose (co)polymer is obtained by carrying out the polymerization in the second reaction zone, growing a low-molecular weight polymer having a MW lower than that in the first stage reaction zone around the polymer particles from the first reaction zone, controlling the average polymer production per solid catalyst in each stage except the final stage to below 15,000 times and selecting the polymer production in each stage so that the overall average polymer production per solid catalyst is above 5,000 times.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1403681A JPS57126805A (en) | 1981-01-30 | 1981-01-30 | Production of ethylene polymer having wide molecular weight distribution |
GB8202748A GB2094810B (en) | 1981-01-30 | 1982-02-01 | Ethylene polymers |
DE8282100555T DE3270927D1 (en) | 1981-01-30 | 1982-02-01 | Process for producing ethylene polymers |
BR8200530A BR8200530A (en) | 1981-01-30 | 1982-02-01 | PROCESS TO PRODUCE AN ETHYLENE POLYMER |
CA000395319A CA1162700A (en) | 1981-01-30 | 1982-02-01 | Process for producing ethylene polymers |
EP19820100555 EP0057420B1 (en) | 1981-01-30 | 1982-02-01 | Process for producing ethylene polymers |
SG41185A SG41185G (en) | 1981-01-30 | 1985-05-30 | A process for producing ethylene polymers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1403681A JPS57126805A (en) | 1981-01-30 | 1981-01-30 | Production of ethylene polymer having wide molecular weight distribution |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57126805A true JPS57126805A (en) | 1982-08-06 |
Family
ID=11849902
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1403681A Pending JPS57126805A (en) | 1981-01-30 | 1981-01-30 | Production of ethylene polymer having wide molecular weight distribution |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57126805A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4794588A (en) * | 1984-04-07 | 1988-12-27 | Sony Corporation | Optical disk player |
JPH01308410A (en) * | 1984-04-09 | 1989-12-13 | Northern Petro Chem Co | Copolymerization of ethylene |
KR100687283B1 (en) * | 2005-01-26 | 2007-02-27 | 박순숙 | The sole of a shoe |
JP2007522308A (en) * | 2004-02-13 | 2007-08-09 | トータル・ペトロケミカルズ・リサーチ・フエリユイ | Development of catalysts in bimodal olefin production |
JP2012522096A (en) * | 2009-04-02 | 2012-09-20 | トータル・ペトロケミカルズ・リサーチ・フエリユイ | How to optimize energy consumption in the extrusion process |
-
1981
- 1981-01-30 JP JP1403681A patent/JPS57126805A/en active Pending
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4794588A (en) * | 1984-04-07 | 1988-12-27 | Sony Corporation | Optical disk player |
JPH01308410A (en) * | 1984-04-09 | 1989-12-13 | Northern Petro Chem Co | Copolymerization of ethylene |
JPH0423645B2 (en) * | 1984-04-09 | 1992-04-22 | Northern Petro Chem Co | |
JP2007522308A (en) * | 2004-02-13 | 2007-08-09 | トータル・ペトロケミカルズ・リサーチ・フエリユイ | Development of catalysts in bimodal olefin production |
KR100687283B1 (en) * | 2005-01-26 | 2007-02-27 | 박순숙 | The sole of a shoe |
JP2012522096A (en) * | 2009-04-02 | 2012-09-20 | トータル・ペトロケミカルズ・リサーチ・フエリユイ | How to optimize energy consumption in the extrusion process |
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