JPS564643A - 4-methylpentene-1 polymer composition - Google Patents
4-methylpentene-1 polymer compositionInfo
- Publication number
- JPS564643A JPS564643A JP8048279A JP8048279A JPS564643A JP S564643 A JPS564643 A JP S564643A JP 8048279 A JP8048279 A JP 8048279A JP 8048279 A JP8048279 A JP 8048279A JP S564643 A JPS564643 A JP S564643A
- Authority
- JP
- Japan
- Prior art keywords
- polymer
- methylpentene
- carbon black
- ash content
- resistance
- 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
- Compositions Of Macromolecular Compounds (AREA)
- Organic Insulating Materials (AREA)
Abstract
PURPOSE: To improve the heat resistance of 4-methylpentene-1 polymer and to thereby prolong its life, by adding carbon black to the 4-methylpentene-1 polymer so that the ash content of the composition is below a specific percentage.
CONSTITUTION: In improving the strength and weather resistance of a 4-methylpentene-1 polymer by adding carbon black to the polymer, the amount of carbon black added is varied dependent upon the ash content of the carbon black so that the ash content of the polymer composition is below 0.003wt%. This makes it possible to prevent thermal degradation of the polymer and to thereby maintain the resistance to dielectric breakdown for a long time. Heat resistance is further improved by combined use of a known inhibitor against deterioration by copper.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8048279A JPS564643A (en) | 1979-06-25 | 1979-06-25 | 4-methylpentene-1 polymer composition |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8048279A JPS564643A (en) | 1979-06-25 | 1979-06-25 | 4-methylpentene-1 polymer composition |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS564643A true JPS564643A (en) | 1981-01-19 |
JPS6142740B2 JPS6142740B2 (en) | 1986-09-24 |
Family
ID=13719488
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8048279A Granted JPS564643A (en) | 1979-06-25 | 1979-06-25 | 4-methylpentene-1 polymer composition |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS564643A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4471085A (en) * | 1982-03-08 | 1984-09-11 | Matsushita Electric Industrial Co., Ltd. | Diaphragm material for loudspeakers |
JPH02109841A (en) * | 1988-10-19 | 1990-04-23 | Okaji Kk | Box |
-
1979
- 1979-06-25 JP JP8048279A patent/JPS564643A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4471085A (en) * | 1982-03-08 | 1984-09-11 | Matsushita Electric Industrial Co., Ltd. | Diaphragm material for loudspeakers |
JPH02109841A (en) * | 1988-10-19 | 1990-04-23 | Okaji Kk | Box |
Also Published As
Publication number | Publication date |
---|---|
JPS6142740B2 (en) | 1986-09-24 |
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