JPS5438389A - Preparation of highly crystalline polyolefin - Google Patents
Preparation of highly crystalline polyolefinInfo
- Publication number
- JPS5438389A JPS5438389A JP10547177A JP10547177A JPS5438389A JP S5438389 A JPS5438389 A JP S5438389A JP 10547177 A JP10547177 A JP 10547177A JP 10547177 A JP10547177 A JP 10547177A JP S5438389 A JPS5438389 A JP S5438389A
- Authority
- JP
- Japan
- Prior art keywords
- highly crystalline
- crystalline polyolefin
- preparation
- ziegle
- stages
- 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
Abstract
PURPOSE: To prepare a highly crystalline polyolefin having improved elastic properties in melting, by polymerizing propylene in the presence of a Ziegle-Natta catalyst and a molecular weight modifier with different concentrations in two stages.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10547177A JPS5438389A (en) | 1977-09-01 | 1977-09-01 | Preparation of highly crystalline polyolefin |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10547177A JPS5438389A (en) | 1977-09-01 | 1977-09-01 | Preparation of highly crystalline polyolefin |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5438389A true JPS5438389A (en) | 1979-03-22 |
Family
ID=14408497
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10547177A Pending JPS5438389A (en) | 1977-09-01 | 1977-09-01 | Preparation of highly crystalline polyolefin |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5438389A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55118906A (en) * | 1979-03-08 | 1980-09-12 | Sumitomo Chem Co Ltd | Polypropylene having high melt elasticity |
US4499247A (en) * | 1982-06-15 | 1985-02-12 | Chisso Corporation | High-rigidity, high-melt-viscoelasticity polypropylene and process for producing the same |
US4950720A (en) * | 1988-04-29 | 1990-08-21 | Exxon Chemical Patents Inc. | Modified polypropylene, process for making and article made from the same |
US6362298B2 (en) * | 1996-02-22 | 2002-03-26 | Basell Polypropylen Gmbh | High-molecular-weight polypropylene having a broad molecular-weight distribution |
-
1977
- 1977-09-01 JP JP10547177A patent/JPS5438389A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55118906A (en) * | 1979-03-08 | 1980-09-12 | Sumitomo Chem Co Ltd | Polypropylene having high melt elasticity |
US4499247A (en) * | 1982-06-15 | 1985-02-12 | Chisso Corporation | High-rigidity, high-melt-viscoelasticity polypropylene and process for producing the same |
US4950720A (en) * | 1988-04-29 | 1990-08-21 | Exxon Chemical Patents Inc. | Modified polypropylene, process for making and article made from the same |
US6362298B2 (en) * | 1996-02-22 | 2002-03-26 | Basell Polypropylen Gmbh | High-molecular-weight polypropylene having a broad molecular-weight distribution |
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