JPS54123191A - Production of propylene block copolymer - Google Patents
Production of propylene block copolymerInfo
- Publication number
- JPS54123191A JPS54123191A JP3156778A JP3156778A JPS54123191A JP S54123191 A JPS54123191 A JP S54123191A JP 3156778 A JP3156778 A JP 3156778A JP 3156778 A JP3156778 A JP 3156778A JP S54123191 A JPS54123191 A JP S54123191A
- Authority
- JP
- Japan
- Prior art keywords
- propylene
- stage
- polymerization
- polymerizer
- copolymerization
- 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
Landscapes
- Graft Or Block Polymers (AREA)
Abstract
PURPOSE: The copolymerization of propylene is effected in two stages, at the first stage, the polymerization or copolymerization of propylene in liquid phase of propylene and at the second stage, the copolymerization of proylene in the gas phase, wherein the polymerization system is kept in fluidized state in both stages, thereby producing effectively title block copolymers.
CONSTITUTION: The catalyst, hydrogen, and monomers are supplied from lines 18, 19, line 20, and lines 21, 22 to polymerizer 23 respectively. At the first stage, the polymerization is conducted under conditions where propylene can be kept as liquid, that is, 40W90°C, 10W50 kg/cm2 and the unreacted propylene is expelled from the top 2 of the polymerizer and circulated through heat exchanger 3, lines 4, 5, pump 6 and others to form the upward flow of propylene in polymerizer 23, thus keeping particles of polymer formed in fluidized state. At the second stage, the gas phase polymerization is effected under conditions of 40W90°C, 10W40 kg/cm2 where propylene and other monomer is kept as gases and further these gases are circulated in the same, paths as above to keep fluidized state.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3156778A JPS54123191A (en) | 1978-03-17 | 1978-03-17 | Production of propylene block copolymer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3156778A JPS54123191A (en) | 1978-03-17 | 1978-03-17 | Production of propylene block copolymer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS54123191A true JPS54123191A (en) | 1979-09-25 |
Family
ID=12334745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3156778A Pending JPS54123191A (en) | 1978-03-17 | 1978-03-17 | Production of propylene block copolymer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54123191A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0037291A2 (en) * | 1980-04-02 | 1981-10-07 | Mitsui Petrochemical Industries, Ltd. | Improved process for the production of a propylene-containing block copolymer |
| JPS56166218A (en) * | 1980-05-26 | 1981-12-21 | Sumitomo Chem Co Ltd | Production of propylene block copolymer |
-
1978
- 1978-03-17 JP JP3156778A patent/JPS54123191A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0037291A2 (en) * | 1980-04-02 | 1981-10-07 | Mitsui Petrochemical Industries, Ltd. | Improved process for the production of a propylene-containing block copolymer |
| JPS56166218A (en) * | 1980-05-26 | 1981-12-21 | Sumitomo Chem Co Ltd | Production of propylene block copolymer |
| JPS6251287B2 (en) * | 1980-05-26 | 1987-10-29 | Sumitomo Chemical Co |
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