JPS5670014A - Propylene copolymer for forming sheet - Google Patents
Propylene copolymer for forming sheetInfo
- Publication number
- JPS5670014A JPS5670014A JP14605479A JP14605479A JPS5670014A JP S5670014 A JPS5670014 A JP S5670014A JP 14605479 A JP14605479 A JP 14605479A JP 14605479 A JP14605479 A JP 14605479A JP S5670014 A JPS5670014 A JP S5670014A
- Authority
- JP
- Japan
- Prior art keywords
- copolymer
- ethylene
- unit containing
- propylene copolymer
- forming sheet
- 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 prepare the titled copolymer for sheet-forming use, having low sagging tendency in thermoforming and excellent thermoforming characteristics, giving a thin-walled high impact vessel, and composed of a block copolymer consisting of two kinds of copolymers having different ethylene content each other.
CONSTITUTION: The objective block copolymer having a melt index of 0.01W 0.8g/10min and an ethylene content of ≤50wt%, and composed of (A) 50W95wt% of a copolymer unit containing <20wt% ethylene ( including propylene homopolymer) and (B) 50W5wt% of another copolymer unit containing ≥20wt% of ethylene. The intrinsic viscosities of the components (A) and (B) (dl/g) satisfy the relationship, [η]B≥[η]A+0.5. The copolymer can be obtained by the two-step copolymerization of propylene and ethylene.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14605479A JPS5670014A (en) | 1979-11-13 | 1979-11-13 | Propylene copolymer for forming sheet |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14605479A JPS5670014A (en) | 1979-11-13 | 1979-11-13 | Propylene copolymer for forming sheet |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5670014A true JPS5670014A (en) | 1981-06-11 |
JPS6227091B2 JPS6227091B2 (en) | 1987-06-12 |
Family
ID=15399040
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14605479A Granted JPS5670014A (en) | 1979-11-13 | 1979-11-13 | Propylene copolymer for forming sheet |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5670014A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58201806A (en) * | 1982-05-19 | 1983-11-24 | Chisso Corp | High-melting viscoelastic polypropylene for post-processing sheet and blow molding, and its preparation |
JPS59149907A (en) * | 1983-02-15 | 1984-08-28 | Idemitsu Petrochem Co Ltd | Crystalline polypropylene and its production |
US4499247A (en) * | 1982-06-15 | 1985-02-12 | Chisso Corporation | High-rigidity, high-melt-viscoelasticity polypropylene and process for producing the same |
JPS6211749A (en) * | 1985-07-10 | 1987-01-20 | Idemitsu Petrochem Co Ltd | Propylene-ethylene copolymer composition |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4913514A (en) * | 1972-05-23 | 1974-02-06 | ||
JPS5113339A (en) * | 1974-07-24 | 1976-02-02 | Kobe Steel Ltd | SHOMONOZURUOMOCHIIRU YOSETSUHOHO |
JPS523684A (en) * | 1975-06-27 | 1977-01-12 | Showa Denko Kk | Process for preparing ropylene copolymer |
JPS5424995A (en) * | 1977-07-27 | 1979-02-24 | Showa Denko Kk | Production of propylene copolymer |
JPS5661416A (en) * | 1979-10-24 | 1981-05-26 | Sumitomo Chem Co Ltd | Preparation of propylene-ethylene block copolymer |
-
1979
- 1979-11-13 JP JP14605479A patent/JPS5670014A/en active Granted
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4913514A (en) * | 1972-05-23 | 1974-02-06 | ||
JPS5113339A (en) * | 1974-07-24 | 1976-02-02 | Kobe Steel Ltd | SHOMONOZURUOMOCHIIRU YOSETSUHOHO |
JPS523684A (en) * | 1975-06-27 | 1977-01-12 | Showa Denko Kk | Process for preparing ropylene copolymer |
JPS5424995A (en) * | 1977-07-27 | 1979-02-24 | Showa Denko Kk | Production of propylene copolymer |
JPS5661416A (en) * | 1979-10-24 | 1981-05-26 | Sumitomo Chem Co Ltd | Preparation of propylene-ethylene block copolymer |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58201806A (en) * | 1982-05-19 | 1983-11-24 | Chisso Corp | High-melting viscoelastic polypropylene for post-processing sheet and blow molding, and its preparation |
US4500682A (en) * | 1982-05-19 | 1985-02-19 | Chisso Corporation | High melt-viscoelastic polypropylene for post-processed sheets and for blow molding |
JPS6248962B2 (en) * | 1982-05-19 | 1987-10-16 | Chisso Corp | |
US4499247A (en) * | 1982-06-15 | 1985-02-12 | Chisso Corporation | High-rigidity, high-melt-viscoelasticity polypropylene and process for producing the same |
JPS59149907A (en) * | 1983-02-15 | 1984-08-28 | Idemitsu Petrochem Co Ltd | Crystalline polypropylene and its production |
JPH0375562B2 (en) * | 1983-02-15 | 1991-12-02 | Idemitsu Petrochemical Co | |
JPS6211749A (en) * | 1985-07-10 | 1987-01-20 | Idemitsu Petrochem Co Ltd | Propylene-ethylene copolymer composition |
JPH057418B2 (en) * | 1985-07-10 | 1993-01-28 | Idemitsu Petrochemical Co |
Also Published As
Publication number | Publication date |
---|---|
JPS6227091B2 (en) | 1987-06-12 |
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