Coating composition and laminate
US-2024093052-A1 · Mar 21, 2024 · US
Fluorinated elastic copolymer and method for its production
US8927668B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8927668-B2 |
| Application number | US-201213551157-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 17, 2012 |
| Priority date | Jan 29, 2010 |
| Publication date | Jan 6, 2015 |
| Grant date | Jan 6, 2015 |
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- Title
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- Abstract
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Abstract
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To provide a fluorinated elastic copolymer which is excellent in crosslinking reactivity and extrusion moldability and which is curable to obtain a rubber excellent in permanent compression set resistance, base resistance and oil resistance and particularly suitable as a covering material for electric wires. A fluorinated elastic copolymer obtained by copolymerizing tetrafluoroethylene, propylene and optionally another monomer, wherein the molar ratio (a)/(b) of repeating units (a) derived from tetrafluoroethylene to repeating units (b) derived from propylene in the fluorinated elastic copolymer is from 60/40 to 75/25, and repeating units (c) derived from said another monomer is from 0 to 10 mol % in the fluorinated elastic copolymer.
First claim
Opening claim text (preview).
What is claimed is: 1. A fluorinated elastic copolymer obtained by copolymerizing monomers consisting of tetrafluoroethylene and propylene, wherein the molar ratio (a)/(b) of repeating units (a) derived from tetrafluoroethylene to repeating units (b) derived from propylene in the fluorinated elastic copolymer is from 65/35 to 70/30, and wherein said fluorinated elastic copolymer has a specific gravity of 1.75-1.80. 2. The fluorinated elastic copolymer according to claim 1 , which comprises iodine atoms. 3. A fluorinated elastic copolymer composition comprising the fluorinated elastic copolymer as defined in claim 1 . 4. A fluorinated elastic copolymer obtained by copolymerizing tetrafluoroethylene, propylene and a perfluoroalkyl vinyl ether, wherein the molar ratio (a)/(b) of repeating units (a) derived from tetrafluoroethylene to repeating units (b) derived from propylene in the fluorinated elastic copolymer is from 60/40 to 75/25, and repeating units (c) derived from said perfluoroalkyl vinyl ether are present in a positive amount up to and including 10 mol % in the fluorinated elastic copolymer. 5. The fluorinated elastic copolymer according to claim 4 , wherein said perfluoroalkyl vinyl ether is perfluoromethyl vinyl ether or perfluoropropyl vinyl ether. 6. The fluorinated elastic copolymer according to claim 4 , which comprises iodine atoms. 7. A fluorinated elastic copolymer composition comprising the fluorinated elastic copolymer as defined in claim 4 .
Assignees
Inventors
Classifications
- C08F214/26Primary
Tetrafluoroethene · CPC title
from vinylfluorides or other fluoroethylenic compounds · CPC title
with non-fluorinated comonomers · CPC title
with fluorinated vinyl ethers · CPC title
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- What does patent US8927668B2 cover?
- To provide a fluorinated elastic copolymer which is excellent in crosslinking reactivity and extrusion moldability and which is curable to obtain a rubber excellent in permanent compression set resistance, base resistance and oil resistance and particularly suitable as a covering material for electric wires. A fluorinated elastic copolymer obtained by copolymerizing tetrafluoroethylene, propyle…
- Who is the assignee on this patent?
- Kose Takehiro, Seki Mitsuru, Mizuno Go, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification C08F214/26. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jan 06 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).