JPS56166218A - Production of propylene block copolymer - Google Patents
Production of propylene block copolymerInfo
- Publication number
- JPS56166218A JPS56166218A JP7045180A JP7045180A JPS56166218A JP S56166218 A JPS56166218 A JP S56166218A JP 7045180 A JP7045180 A JP 7045180A JP 7045180 A JP7045180 A JP 7045180A JP S56166218 A JPS56166218 A JP S56166218A
- Authority
- JP
- Japan
- Prior art keywords
- propylene
- alpha
- ethylene
- olefin
- weight ratio
- 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
Abstract
PURPOSE:A Ziegler-Natta catalyst is used to effect the subsequent polymerization of propylene, ethylene and an alpha-olefin in order in a specific proportion to produce a terpolymer with high hot tack, heat seal, transparency, toughness, lubricity and blocking properties. CONSTITUTION:A Ziegler-Natta catalyst, preferably titanium tetracloride, is used of effect the polymerization of ethylene, propylene and an alpha-olefin wherein at the first step, a mixture of propylene-ethylene is added at a weight ratio of (90-99.5)/ (10-0.5), preferably (94-99)/(6-1) and polymerized so that the amount of the copolymer becomes 20-90, preferably 30-80wt% of the total copolymer and at the second stage another mixture of propylene-an alpha-olefin such as butene is fed at a weight ratio of (60-98)/(40-2) so that the copolymer becomes 10-80wt% resultingly the weight ratio of propylene/ethylene/alpha-olefin becomes (99-80)/(0.5- 5)/(0.5-15).
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7045180A JPS56166218A (en) | 1980-05-26 | 1980-05-26 | 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 |
---|---|---|---|
JP7045180A JPS56166218A (en) | 1980-05-26 | 1980-05-26 | Production of propylene block copolymer |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56166218A true JPS56166218A (en) | 1981-12-21 |
JPS6251287B2 JPS6251287B2 (en) | 1987-10-29 |
Family
ID=13431874
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7045180A Granted JPS56166218A (en) | 1980-04-21 | 1980-05-26 | Production of propylene block copolymer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56166218A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04266954A (en) * | 1990-11-01 | 1992-09-22 | Himont Inc | Propylene polymer film and laminate |
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 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4935487A (en) * | 1972-07-20 | 1974-04-02 | ||
JPS54123191A (en) * | 1978-03-17 | 1979-09-25 | Sumitomo Chem Co Ltd | Production of propylene block copolymer |
-
1980
- 1980-05-26 JP JP7045180A patent/JPS56166218A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4935487A (en) * | 1972-07-20 | 1974-04-02 | ||
JPS54123191A (en) * | 1978-03-17 | 1979-09-25 | Sumitomo Chem Co Ltd | Production of propylene block copolymer |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04266954A (en) * | 1990-11-01 | 1992-09-22 | Himont Inc | Propylene polymer film and laminate |
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 |
---|---|
JPS6251287B2 (en) | 1987-10-29 |
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