JPS56149415A - Production of propylene block copolymer - Google Patents
Production of propylene block copolymerInfo
- Publication number
- JPS56149415A JPS56149415A JP5345080A JP5345080A JPS56149415A JP S56149415 A JPS56149415 A JP S56149415A JP 5345080 A JP5345080 A JP 5345080A JP 5345080 A JP5345080 A JP 5345080A JP S56149415 A JPS56149415 A JP S56149415A
- Authority
- JP
- Japan
- Prior art keywords
- copolymer
- propylene
- block copolymer
- propylene block
- production
- 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
- Graft Or Block Polymers (AREA)
Abstract
PURPOSE: To economically produce titled copolymer excellent in hot tack, heat seal, transparency, etc., by subjecting propylene and other α-olefins to multistage polymerization under a specified condition.
CONSTITUTION: In a process for producing a propylene block copolymer by using a Ziegler-Natta type catalyst; in the first stage copolymerization, 60W98wt% propylene and 2W40% C4W8 α-olefin are copolymerized to form a copolymer in an amount corresponding to 20W90wt% of that of the final product copolymer, and then in the second stage copolymerization, 90W99wt% propylene and 1W10wt% ethylene are copolymerized to form a copolymer in an amount corresponding to 80W10wt% of that of the final product copolymer.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5345080A JPS56149415A (en) | 1980-04-21 | 1980-04-21 | Production of propylene block copolymer |
GB8111834A GB2075993B (en) | 1980-04-21 | 1981-04-14 | Catalytic process for producing propylene block copolymers |
US06/255,005 US4433110A (en) | 1980-04-21 | 1981-04-17 | Process for producing propylene block copolymers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5345080A JPS56149415A (en) | 1980-04-21 | 1980-04-21 | Production of propylene block copolymer |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56149415A true JPS56149415A (en) | 1981-11-19 |
JPS5745764B2 JPS5745764B2 (en) | 1982-09-29 |
Family
ID=12943184
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5345080A Granted JPS56149415A (en) | 1980-04-21 | 1980-04-21 | Production of propylene block copolymer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56149415A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010535863A (en) * | 2007-08-03 | 2010-11-25 | バーゼル・ポリオレフィン・イタリア・ソチエタ・ア・レスポンサビリタ・リミタータ | Propylene terpolymer production method |
JP2016524626A (en) * | 2013-06-11 | 2016-08-18 | バーゼル・ポリオレフィン・イタリア・ソチエタ・ア・レスポンサビリタ・リミタータ | Propylene-based terpolymer |
-
1980
- 1980-04-21 JP JP5345080A patent/JPS56149415A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010535863A (en) * | 2007-08-03 | 2010-11-25 | バーゼル・ポリオレフィン・イタリア・ソチエタ・ア・レスポンサビリタ・リミタータ | Propylene terpolymer production method |
JP2016524626A (en) * | 2013-06-11 | 2016-08-18 | バーゼル・ポリオレフィン・イタリア・ソチエタ・ア・レスポンサビリタ・リミタータ | Propylene-based terpolymer |
Also Published As
Publication number | Publication date |
---|---|
JPS5745764B2 (en) | 1982-09-29 |
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