JPS57102909A - Polyolefin lid - Google Patents
Polyolefin lidInfo
- Publication number
- JPS57102909A JPS57102909A JP55177136A JP17713680A JPS57102909A JP S57102909 A JPS57102909 A JP S57102909A JP 55177136 A JP55177136 A JP 55177136A JP 17713680 A JP17713680 A JP 17713680A JP S57102909 A JPS57102909 A JP S57102909A
- Authority
- JP
- Japan
- Prior art keywords
- lid
- injecting
- catalyst system
- polyolefin
- value
- 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 lid made of a polyolefin having a good resin melt flow and excellent stress cracking resistance, heat resistance, mechanical strength, etc., prepared by injecting a specified ethylene/α-olefin copolymer.
CONSTITUTION: Use is made of a catalyst system consisting of a solid substance containing magnesium and titanium and/or vanadium (e.g., MgO-RX-TiCl4, wherein R is an organic residue, and X is a halogen) and an organoaluminum compound (e.g., triethylaluminum). Thus, the titled lid is formed by copolymerizing ethylene with a 3W12C α-olefin in vapor phase by use of the above catalyst system and injecting the produced copolymer, density 0.89W0.945, melt index 0.5W40, double bond content ≤ about one per 1,000 carbon atoms, n-value of 1.2W3, where the n-value is defined by the expression, wherein γ is shear rate (sec-1, 170°C), τ is shear stress (dyn/cm2, 170°C).
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55177136A JPS57102909A (en) | 1980-12-17 | 1980-12-17 | Polyolefin lid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55177136A JPS57102909A (en) | 1980-12-17 | 1980-12-17 | Polyolefin lid |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57102909A true JPS57102909A (en) | 1982-06-26 |
JPH0437087B2 JPH0437087B2 (en) | 1992-06-18 |
Family
ID=16025804
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55177136A Granted JPS57102909A (en) | 1980-12-17 | 1980-12-17 | Polyolefin lid |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57102909A (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54154489A (en) * | 1978-03-31 | 1979-12-05 | Union Carbide Corp | Product molded from ethylene hydrocarbon copolymer |
JPS5554308A (en) * | 1978-10-17 | 1980-04-21 | Nippon Oil Co Ltd | Preparation of copolymer |
JPS5556111A (en) * | 1978-10-20 | 1980-04-24 | Nippon Oil Co Ltd | Preparation of copolymer |
JPS5556110A (en) * | 1978-10-20 | 1980-04-24 | Nippon Oil Co Ltd | Preparation of copolymer |
-
1980
- 1980-12-17 JP JP55177136A patent/JPS57102909A/en active Granted
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54154489A (en) * | 1978-03-31 | 1979-12-05 | Union Carbide Corp | Product molded from ethylene hydrocarbon copolymer |
JPS5554308A (en) * | 1978-10-17 | 1980-04-21 | Nippon Oil Co Ltd | Preparation of copolymer |
JPS5556111A (en) * | 1978-10-20 | 1980-04-24 | Nippon Oil Co Ltd | Preparation of copolymer |
JPS5556110A (en) * | 1978-10-20 | 1980-04-24 | Nippon Oil Co Ltd | Preparation of copolymer |
Also Published As
Publication number | Publication date |
---|---|
JPH0437087B2 (en) | 1992-06-18 |
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