JPS5734112A - Production of propylene block copolymer - Google Patents
Production of propylene block copolymerInfo
- Publication number
- JPS5734112A JPS5734112A JP10896280A JP10896280A JPS5734112A JP S5734112 A JPS5734112 A JP S5734112A JP 10896280 A JP10896280 A JP 10896280A JP 10896280 A JP10896280 A JP 10896280A JP S5734112 A JPS5734112 A JP S5734112A
- Authority
- JP
- Japan
- Prior art keywords
- copolymer
- hydrogen
- polymerizing
- yield
- propylene
- 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)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
PURPOSE: To obtain a copolymer excellent in rigidity, impact resistance and heat resistance and low in bend clouding, by carrying out the multistage polymerization of monomers under conditions of controlled presence of hydrogen, in the production of a propylene copolymer, using a Natta-Ziegler catalyst.
CONSTITUTION: A propylene-olefin block copolymer is obtained by (i) polymerizing in the presence of hydrogen to yield 40W90wt% copolymer, propylene content 90W 99.5wt%, limiting viscosity [η] (in tetralin at 135°C) 1W3dl/g, (ii) polymerizing in the presence of hydrogen to yield 2W10wt% copolymer, propylene content 80W 99wt%, (iii) polymerizing in the absence of hydrogen to yield 1W10wt% copolymer, propylene content 0W80wt%, and lastly, (iv) polymerizing in the presence of hydrogen to yield 7W57wt% copolymer, propylene content 0W80wt%, limiting viscosity 2W10dl/g.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10896280A JPS5734112A (en) | 1980-08-07 | 1980-08-07 | Production of propylene block copolymer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10896280A JPS5734112A (en) | 1980-08-07 | 1980-08-07 | Production of propylene block copolymer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5734112A true JPS5734112A (en) | 1982-02-24 |
Family
ID=14498063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10896280A Pending JPS5734112A (en) | 1980-08-07 | 1980-08-07 | Production of propylene block copolymer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5734112A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6049009A (en) * | 1983-08-30 | 1985-03-18 | Mitsubishi Petrochem Co Ltd | Preparation of propylene polymer |
| JPS62149711A (en) * | 1985-12-17 | 1987-07-03 | Chisso Corp | Continuous production of high-melt viscoelasticity ethylene/propylene copolymer |
| US6710130B2 (en) | 2001-03-30 | 2004-03-23 | Chisso Corporation | Propylene polymer composition and its foam moldings |
| JP2015034292A (en) * | 2013-07-12 | 2015-02-19 | 住友化学株式会社 | Propylene resin composition |
-
1980
- 1980-08-07 JP JP10896280A patent/JPS5734112A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6049009A (en) * | 1983-08-30 | 1985-03-18 | Mitsubishi Petrochem Co Ltd | Preparation of propylene polymer |
| JPH0420003B2 (en) * | 1983-08-30 | 1992-03-31 | Mitsubishi Petrochemical Co | |
| JPS62149711A (en) * | 1985-12-17 | 1987-07-03 | Chisso Corp | Continuous production of high-melt viscoelasticity ethylene/propylene copolymer |
| JPH046725B2 (en) * | 1985-12-17 | 1992-02-06 | Chisso Corp | |
| US6710130B2 (en) | 2001-03-30 | 2004-03-23 | Chisso Corporation | Propylene polymer composition and its foam moldings |
| JP2015034292A (en) * | 2013-07-12 | 2015-02-19 | 住友化学株式会社 | Propylene resin composition |
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