JPS5634713A - Preparation of polyethylene by continuous multistage polymerization - Google Patents
Preparation of polyethylene by continuous multistage polymerizationInfo
- Publication number
- JPS5634713A JPS5634713A JP11060379A JP11060379A JPS5634713A JP S5634713 A JPS5634713 A JP S5634713A JP 11060379 A JP11060379 A JP 11060379A JP 11060379 A JP11060379 A JP 11060379A JP S5634713 A JPS5634713 A JP S5634713A
- Authority
- JP
- Japan
- Prior art keywords
- compound
- reacting
- ethylene
- polyethylene
- transition metal
- 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.)
- Granted
Links
Landscapes
- Polymerisation Methods In General (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
Abstract
PURPOSE: To prepare polyethylene having broad molecular weight distribution, by the continuous multistage polymerization of ethylene in the presence of a catalyst comprising a solid component obtained by reacting a tri-valent metal halide with a divalent metal compound, an electron donative compound, a transition metal compound, and an organo-aluminum compound.
CONSTITUTION: The objective polyethylene is prepared by the two-stage polymerization in the presence of a catalyst obtained by mixing (I) a component prepared by (1) reacting a tri-valent metal halide with a divalent metal hydroxide, etc., (2) reacting the solid product with a compound of a transition metal of group IVa or Va of the periodic table in the presence of an electron donative compound, and (c) reacting the reaction product with a halogen-containing transition metal compound, etc., with (II) an organo-aluminum compound, wherein the first-stage polymerization is carried out in a solvent at 30W100°C and 11W70kg/cm2 maintaining the molar ratio of ethylene: H2 in the gas phase to 1:0.001W0.5, to obtain the polymer suspended in the solvent, and the second-stage polymerization is carried out at 50W120°C and a pressure of 11W70kg/cm2 maintaining the molar ratio of ethylene: H2 to 1:0.1W3.0.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11060379A JPS5634713A (en) | 1979-08-30 | 1979-08-30 | Preparation of polyethylene by continuous multistage polymerization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11060379A JPS5634713A (en) | 1979-08-30 | 1979-08-30 | Preparation of polyethylene by continuous multistage polymerization |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5634713A true JPS5634713A (en) | 1981-04-07 |
| JPS6352657B2 JPS6352657B2 (en) | 1988-10-19 |
Family
ID=14540023
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11060379A Granted JPS5634713A (en) | 1979-08-30 | 1979-08-30 | Preparation of polyethylene by continuous multistage polymerization |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5634713A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60184908U (en) * | 1984-05-18 | 1985-12-07 | 三井造船株式会社 | reinforced structure |
-
1979
- 1979-08-30 JP JP11060379A patent/JPS5634713A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60184908U (en) * | 1984-05-18 | 1985-12-07 | 三井造船株式会社 | reinforced structure |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6352657B2 (en) | 1988-10-19 |
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