Fluororubber composition
US-2015197619-A1 · Jul 16, 2015 · US
Fluororubber composition
US10793706B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10793706-B2 |
| Application number | US-201616060565-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 25, 2016 |
| Priority date | Dec 21, 2015 |
| Publication date | Oct 6, 2020 |
| Grant date | Oct 6, 2020 |
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- Title
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Abstract
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A fluororubber composition comprising 10 to 50 parts by weight of wollastonite and 0.5 to 10 parts by weight of organic peroxide based on 100 parts by weight of peroxide-crosslinkable fluororubber, the wollastonite being needle-like or fibrous wollastonite having an average fiber diameter of 5 μm or less and an average fiber length of 40 to 80 μm, and the wollastonite being surface-treated with an amino silane coupling agent or an epoxy silane coupling agent. The fluororubber composition that can be suitably used as, for example, a molding material for normal/reverse rotation oil seals that allow continuous excellent sealing of fluid in the operation of normal and reverse rotation.
First claim
Opening claim text (preview).
The invention claimed is: 1. A fluororubber composition comprising 10 to 50 parts by weight of wollastonite and 0.5 to 10 parts by weight of organic peroxide based on 100 parts by weight of peroxide-crosslinkable fluororubber, the wollastonite being needle-like or fibrous wollastonite having an average fiber diameter of 5 μm or less and an average fiber length of 40 to 80 μm, and the wollastonite being surface-treated with an amino silane coupling agent. 2. The fluororubber composition according to claim 1 , wherein the wollastonite is used in an amount of 25 to 50 parts by weight based on 100 parts by weight of fluororubber. 3. A sealing material molded by vulcanizing of the fluororubber composition according to claim 2 . 4. The sealing material according to claim 3 , which is used as oil seal. 5. The sealing material according to claim 4 , which is used as a normal/reverse rotation oil seal. 6. The sealing material according to claim 5 , which is used as a normal/reverse rotation oil seal for railway vehicles. 7. A sealing material molded by vulcanizing of the fluororubber composition according to claim 1 . 8. The sealing material according to claim 7 , which is used as oil seal. 9. The sealing material according to claim 8 , which is used as a normal/reverse rotation oil seal. 10. The sealing material according to claim 9 , which is used as a normal/reverse rotation oil seal for railway vehicles.
Assignees
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Classifications
- C08K5/14Primary
Peroxides · CPC title
Fibres or whiskers · CPC title
Additives being defined by their length · CPC title
Silicon-containing compounds · CPC title
containing fluorine atoms · CPC title
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- What does patent US10793706B2 cover?
- A fluororubber composition comprising 10 to 50 parts by weight of wollastonite and 0.5 to 10 parts by weight of organic peroxide based on 100 parts by weight of peroxide-crosslinkable fluororubber, the wollastonite being needle-like or fibrous wollastonite having an average fiber diameter of 5 μm or less and an average fiber length of 40 to 80 μm, and the wollastonite being surface-t…
- Who is the assignee on this patent?
- Nok Corp
- What technology area does this patent fall under?
- Primary CPC classification C08K5/14. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Oct 06 2020 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).