Adhesive tape for rechargeable battery and rechargeable battery including same
US-2024372219-A1 · Nov 7, 2024 · US
Method for producing a fluoroelastomer
US9273172B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9273172-B2 |
| Application number | US-16845408-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 7, 2008 |
| Priority date | Jul 31, 2007 |
| Publication date | Mar 1, 2016 |
| Grant date | Mar 1, 2016 |
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- Title
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Abstract
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The present invention provides a method for producing a fluoroelastomer using an emulsifier which is inexpensive and hardly remains in product polymers. The present invention is related to a method for producing a fluoroelastomer, wherein vinylidene fluoride and at least one fluoroolefin monomer other than vinylidene fluoride are copolymerized in the manner of an emulsion polymerization in the presence of an emulsifier represented by C 5 F 11 COOM, wherein M represents H, NH 4 or an alkali metal.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for producing a vinylidene fluoride/tetrafluoroethylene/hexafluoropropylene elastomer, comprising step (A) of copolymerizing vinylidene fluoride, tetrafluoroethylene, hexafluoropropylene in the manner of an emulsion polymerization in the presence of an emulsifier represented by C 5 F 11 COONH 4 , wherein the level of addition of the emulsifier is not lower than 500 ppm and not higher than 4000 ppm, and the polymerization is initiated by a water-soluble radical polymerization initiator. 2. The method for producing a vinylidene fluoride/tetrafluoroethylene/hexafluoropropylene elastomer according to claim 1 , further comprising step (B), following the step (A), of carrying out further emulsion polymerization using an organic peroxide.
Assignees
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Classifications
- C08F214/22Primary
Vinylidene fluoride · CPC title
anionic · CPC title
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- What does patent US9273172B2 cover?
- The present invention provides a method for producing a fluoroelastomer using an emulsifier which is inexpensive and hardly remains in product polymers. The present invention is related to a method for producing a fluoroelastomer, wherein vinylidene fluoride and at least one fluoroolefin monomer other than vinylidene fluoride are copolymerized in the manner of an emulsion polymerization in the …
- Who is the assignee on this patent?
- Kishine Mitsuru, Kitaichi Masanori, Morita Shigeru, and 3 more
- What technology area does this patent fall under?
- Primary CPC classification C08F214/22. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 01 2016 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).