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Process for manufacturing fluoroelastomer compositions containing fluoroplastic fibrils
US9290624B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9290624-B2 |
| Application number | US-201414469710-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 27, 2014 |
| Priority date | Dec 15, 2011 |
| Publication date | Mar 22, 2016 |
| Grant date | Mar 22, 2016 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
Disclosed herein is a process for the manufacture of a fluoroelastomer composition containing fluoropolymer fibrils. The process comprises applying shear to a fluoroelastomer gum in a mixer while adding a liquid dispersion of fibrillatable fluoropolymer.
First claim
Opening claim text (preview).
What is claimed is: 1. A process for manufacture of a fluoroelastomer composition containing fluoroplastic fibrils, said process comprising: A) applying shear to a fluoroelastomer gum in a mixer; and B) adding a liquid dispersion of fibrillatable fluoroplastic particles to said fluoroelastomer gum while applying shear in said mixer, thereby forming a fluoroelastomer composition containing fluoroplastic fibrils dispersed therein. 2. The process of claim 1 wherein said fluoroplastic particles have a d90 less than 5 microns. 3. The process of claim 2 wherein said fluoroplastic particles have a d90 less than 0.5 microns and a d50 less than 0.3 microns. 4. The process of claim 1 wherein said fluoroplastic fibrils have a width less than 100 nm. 5. A fluoroelastomer composition made by the process of claim 1 . 6. A cured fluoroelastomer article made from the composition of claim 5 .
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Inventors
Classifications
Homopolymers or copolymers of nitriles containing four or more carbon atoms · CPC title
Fibres or whiskers · CPC title
containing fluorine atoms · CPC title
in the presence of a {continuous} liquid phase · CPC title
containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure · CPC title
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Frequently asked questions
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- What does patent US9290624B2 cover?
- Disclosed herein is a process for the manufacture of a fluoroelastomer composition containing fluoropolymer fibrils. The process comprises applying shear to a fluoroelastomer gum in a mixer while adding a liquid dispersion of fibrillatable fluoropolymer.
- Who is the assignee on this patent?
- Du Pont
- What technology area does this patent fall under?
- Primary CPC classification C08J3/005. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 22 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).