JPS5634712A - Preparation of polyethylene by continuous multistage polymerization - Google Patents
Preparation of polyethylene by continuous multistage polymerizationInfo
- Publication number
- JPS5634712A JPS5634712A JP11060279A JP11060279A JPS5634712A JP S5634712 A JPS5634712 A JP S5634712A JP 11060279 A JP11060279 A JP 11060279A JP 11060279 A JP11060279 A JP 11060279A JP S5634712 A JPS5634712 A JP S5634712A
- Authority
- JP
- Japan
- Prior art keywords
- compound
- polymerization
- reacting
- stage
- polyethylene
- 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 multi-tage 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 donor 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 the IVa or Va group of the periodic table in the presence of an electron donative compound, and (3) 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 in the presence of hydrogen at 50W120°C and 5W70kg/cm2, to obtain the polymer suspended in the solvent, and the second- stage polymerization is carried out at 30W100°C and 5W70kg/cm2, provided that the pressure of the second-polymerization stage is lower than that of the first-polymerization stage by 1W30kg/cm2.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11060279A JPS5634712A (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 |
---|---|---|---|
JP11060279A JPS5634712A (en) | 1979-08-30 | 1979-08-30 | Preparation of polyethylene by continuous multistage polymerization |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5634712A true JPS5634712A (en) | 1981-04-07 |
JPS6352656B2 JPS6352656B2 (en) | 1988-10-19 |
Family
ID=14540000
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11060279A Granted JPS5634712A (en) | 1979-08-30 | 1979-08-30 | Preparation of polyethylene by continuous multistage polymerization |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5634712A (en) |
-
1979
- 1979-08-30 JP JP11060279A patent/JPS5634712A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS6352656B2 (en) | 1988-10-19 |
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