JPS5638309A - Propylene copolymer for forming film - Google Patents
Propylene copolymer for forming filmInfo
- Publication number
- JPS5638309A JPS5638309A JP11413879A JP11413879A JPS5638309A JP S5638309 A JPS5638309 A JP S5638309A JP 11413879 A JP11413879 A JP 11413879A JP 11413879 A JP11413879 A JP 11413879A JP S5638309 A JPS5638309 A JP S5638309A
- Authority
- JP
- Japan
- Prior art keywords
- copolymer
- ethylene
- block
- film
- blocks
- 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)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Polymerisation Methods In General (AREA)
Abstract
PURPOSE: To titled copolymer, useful for a bag made of a resin etc., capable of improving the tear strength and impact strength of a film and stability in molding the film, having a specific melt index, and consisting of two blocks having a specific compositions and intrinsic viscosities.
CONSTITUTION: A block copolymer with an ethylene content, based on the copolymer, of 50wt.% or less, consisting of 50W95wt% a block (A) containing less than 20wt% ethylene (including propylene homopolymer) and a block (B) containing 20wt% or more ethylene, and having a melt index of 0.01W0.5g/10min and intrinsic viscosities [η]A and [η]B of the blocks (A) and (B) in the relation expressed by the formula. The copolymer is obtained by copolymerizing a mixed gas of propylene with ethylene in the presence of activated titanium trichloride and an organoaluminum compound as catalysts in an inert gas atmosphere at high temperature and pressure while feeding hydrogen with the mixed gas to the polymerization system.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11413879A JPS5638309A (en) | 1979-09-07 | 1979-09-07 | Propylene copolymer for forming film |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11413879A JPS5638309A (en) | 1979-09-07 | 1979-09-07 | Propylene copolymer for forming film |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5638309A true JPS5638309A (en) | 1981-04-13 |
JPH0113487B2 JPH0113487B2 (en) | 1989-03-07 |
Family
ID=14630082
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11413879A Granted JPS5638309A (en) | 1979-09-07 | 1979-09-07 | Propylene copolymer for forming film |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5638309A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63112612A (en) * | 1986-10-30 | 1988-05-17 | Idemitsu Petrochem Co Ltd | Propylene polymer composition |
JPH0693062A (en) * | 1992-09-16 | 1994-04-05 | Sumitomo Chem Co Ltd | Polypropylene block copolymer and film therefrom |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS523684A (en) * | 1975-06-27 | 1977-01-12 | Showa Denko Kk | Process for preparing ropylene copolymer |
JPS5439487A (en) * | 1977-09-05 | 1979-03-26 | Showa Denko Kk | Preparation of propylene copolymer |
JPS5543152A (en) * | 1978-09-22 | 1980-03-26 | Chisso Corp | Preparation of copolymer |
JPS55123637A (en) * | 1979-03-15 | 1980-09-24 | Sumitomo Chem Co Ltd | Extruded sheet of polypropylene |
-
1979
- 1979-09-07 JP JP11413879A patent/JPS5638309A/en active Granted
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS523684A (en) * | 1975-06-27 | 1977-01-12 | Showa Denko Kk | Process for preparing ropylene copolymer |
JPS5439487A (en) * | 1977-09-05 | 1979-03-26 | Showa Denko Kk | Preparation of propylene copolymer |
JPS5543152A (en) * | 1978-09-22 | 1980-03-26 | Chisso Corp | Preparation of copolymer |
JPS55123637A (en) * | 1979-03-15 | 1980-09-24 | Sumitomo Chem Co Ltd | Extruded sheet of polypropylene |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63112612A (en) * | 1986-10-30 | 1988-05-17 | Idemitsu Petrochem Co Ltd | Propylene polymer composition |
JPH0693062A (en) * | 1992-09-16 | 1994-04-05 | Sumitomo Chem Co Ltd | Polypropylene block copolymer and film therefrom |
Also Published As
Publication number | Publication date |
---|---|
JPH0113487B2 (en) | 1989-03-07 |
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