JPS5490386A - Continuous preparation of polyolefin having broad molecular weight distribution - Google Patents
Continuous preparation of polyolefin having broad molecular weight distributionInfo
- Publication number
- JPS5490386A JPS5490386A JP15749477A JP15749477A JPS5490386A JP S5490386 A JPS5490386 A JP S5490386A JP 15749477 A JP15749477 A JP 15749477A JP 15749477 A JP15749477 A JP 15749477A JP S5490386 A JPS5490386 A JP S5490386A
- Authority
- JP
- Japan
- Prior art keywords
- molecular weight
- continuously
- step reactor
- polyolefin
- weight distribution
- 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)
Abstract
PURPOSE: To prepare continuously a polyolefin having a broad molecular weight distribution, by maintaining the first and the second step reactor under specific polymerization states and using an active Ziegler catalyst carried on a carrier.
CONSTITUTION: A high molecular weight copolymer dispersed in a solvent is first prepared by feeding an olefin monomer and comonomers continuously into the first step reactor wherein the upper part is free of the gas phase and filled with the liquid, and copolymerizing the monomers in the presence of a solvent, hydrogen and a highly active Ziegler catalyst carried on a solid carrier. The mixture is continuously transferred to the second step reactor of a vertical stirring vessel kept to a pressure lower than that of the first step reactor, by the pressure difference without separation of the mixture and forced transfer means. Low molecular weight polymer is continuously prepared in the presence of the olefin monomer and hydrogen, under the condition that the gas phase is present at the upper part of the stirring vessel, and taken out from the vessel.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15749477A JPS6039084B2 (en) | 1977-12-28 | 1977-12-28 | Continuous production method for polyolefin with wide molecular weight distribution |
GB20057/78A GB1577512A (en) | 1977-06-18 | 1978-05-17 | Olefin polymerization |
CA304,255A CA1102049A (en) | 1977-06-18 | 1978-05-29 | Process for continuously preparing polyolefins |
CA304,642A CA1102050A (en) | 1977-06-18 | 1978-06-02 | Process for continuously preparing polyolefins |
IT12654/78A IT1103190B (en) | 1977-06-18 | 1978-06-09 | PROCESS FOR THE CONTINUOUS PREPARATION OF POLEFINE |
AU37122/78A AU520332B2 (en) | 1977-06-18 | 1978-06-14 | Continuously preparing polyolefins |
FR7818110A FR2394557B1 (en) | 1977-06-18 | 1978-06-16 | PROCESS FOR THE PREPARATION OF CONTINUOUS POLYOLEFINS |
DE19782826548 DE2826548A1 (en) | 1977-06-18 | 1978-06-16 | PROCESS FOR THE CONTINUOUS MANUFACTURING OF POLYOLEFINS |
BR7803876A BR7803876A (en) | 1977-06-18 | 1978-06-16 | CONTINUOUS POLYOLEFIN PREPARATION PROCESS |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15749477A JPS6039084B2 (en) | 1977-12-28 | 1977-12-28 | Continuous production method for polyolefin with wide molecular weight distribution |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5490386A true JPS5490386A (en) | 1979-07-18 |
JPS6039084B2 JPS6039084B2 (en) | 1985-09-04 |
Family
ID=15650902
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15749477A Expired JPS6039084B2 (en) | 1977-06-18 | 1977-12-28 | Continuous production method for polyolefin with wide molecular weight distribution |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6039084B2 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5721409A (en) * | 1980-07-16 | 1982-02-04 | Showa Denko Kk | Production of ethylene copolymer |
JPS57126834A (en) * | 1981-01-30 | 1982-08-06 | Sumitomo Chem Co Ltd | Ethylene-alpha-olefin copolymer resin composition |
JPS588712A (en) * | 1981-07-08 | 1983-01-18 | Showa Denko Kk | Production of ethylene copolymer |
JPS588713A (en) * | 1981-07-10 | 1983-01-18 | Showa Denko Kk | Production of ethylene copolymer |
JPS5813605A (en) * | 1981-07-20 | 1983-01-26 | Showa Denko Kk | Preparation of ethylenic copolymer |
JP2016523288A (en) * | 2013-06-25 | 2016-08-08 | バーゼル・ポリオレフィン・ゲーエムベーハー | Blow molding polyethylene composition having high stress crack resistance |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0430634Y2 (en) * | 1985-06-10 | 1992-07-23 |
-
1977
- 1977-12-28 JP JP15749477A patent/JPS6039084B2/en not_active Expired
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5721409A (en) * | 1980-07-16 | 1982-02-04 | Showa Denko Kk | Production of ethylene copolymer |
JPH0317845B2 (en) * | 1980-07-16 | 1991-03-11 | Showa Denko Kk | |
JPS57126834A (en) * | 1981-01-30 | 1982-08-06 | Sumitomo Chem Co Ltd | Ethylene-alpha-olefin copolymer resin composition |
JPS588712A (en) * | 1981-07-08 | 1983-01-18 | Showa Denko Kk | Production of ethylene copolymer |
JPH0318644B2 (en) * | 1981-07-08 | 1991-03-13 | Showa Denko Kk | |
JPS588713A (en) * | 1981-07-10 | 1983-01-18 | Showa Denko Kk | Production of ethylene copolymer |
JPS5813605A (en) * | 1981-07-20 | 1983-01-26 | Showa Denko Kk | Preparation of ethylenic copolymer |
JPH0318645B2 (en) * | 1981-07-20 | 1991-03-13 | Showa Denko Kk | |
JP2016523288A (en) * | 2013-06-25 | 2016-08-08 | バーゼル・ポリオレフィン・ゲーエムベーハー | Blow molding polyethylene composition having high stress crack resistance |
US9725541B2 (en) | 2013-06-25 | 2017-08-08 | Basell Polyolefine Gmbh | Polyethylene composition for blow molding having high stress cracking resistance |
Also Published As
Publication number | Publication date |
---|---|
JPS6039084B2 (en) | 1985-09-04 |
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