JPS5798510A - Production of polyethylene by multistage polymerization - Google Patents
Production of polyethylene by multistage polymerizationInfo
- Publication number
- JPS5798510A JPS5798510A JP17349680A JP17349680A JPS5798510A JP S5798510 A JPS5798510 A JP S5798510A JP 17349680 A JP17349680 A JP 17349680A JP 17349680 A JP17349680 A JP 17349680A JP S5798510 A JPS5798510 A JP S5798510A
- Authority
- JP
- Japan
- Prior art keywords
- solid product
- compound
- ethylene
- polymerize
- hydrogen
- 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
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Polymerisation Methods In General (AREA)
Abstract
PURPOSE: To facilitate remarkably the control of the molecular weight and the amount of the product, by carrying out the titled polymerization in the presence of a combination of catalysts composed of a specific solid product, a solid product prepared from an electron-donating compound and a transition metal compound, and an organo aluminium compound.
CONSTITUTION: The first stage polymerization giving a high molecular side polymer is carried out in a saturated hydrocarbon solvent at 80W100°C, under 11W70kg/cm2 in the presence of a combination of catalysts composed of a solid product (1) obtained from the reaction of a halide of a trivalent metal with the hydroxide of a divalent metal, a final solid product (2) carrying an electron donating compound and a transition metal compound, and an organo aluminium compound (3) in a molar ratio of ethylene/hydrogen in a gas phase of 1/0.001W 0.5, to polymerize 10W70% ethylene fed, and the second stage polymerization giving a low molecular side polymer is carried out in the suspending state of the first polymer in a saturated hydrocarbon solvent at 50W120°C, under 11W 70kg/cm2 in a molar ratio, ethylene/hydrogen in a gas phase, of 1.0/3.0W7.0, to polymerize 90W30% ethylene fed.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17349680A JPS5798510A (en) | 1980-12-09 | 1980-12-09 | Production of polyethylene by multistage polymerization |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17349680A JPS5798510A (en) | 1980-12-09 | 1980-12-09 | Production of polyethylene by multistage polymerization |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5798510A true JPS5798510A (en) | 1982-06-18 |
JPS6352659B2 JPS6352659B2 (en) | 1988-10-19 |
Family
ID=15961585
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17349680A Granted JPS5798510A (en) | 1980-12-09 | 1980-12-09 | Production of polyethylene by multistage polymerization |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5798510A (en) |
-
1980
- 1980-12-09 JP JP17349680A patent/JPS5798510A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6352659B2 (en) | 1988-10-19 |
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