Annealing method, annealing jig and annealing apparatus
US-9849639-B2 · Dec 26, 2017 · US
Melt-fabricable perfluoropolymers having improved heat aging property
US8993695B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8993695-B2 |
| Application number | US-201414162027-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 23, 2014 |
| Priority date | Aug 6, 2010 |
| Publication date | Mar 31, 2015 |
| Grant date | Mar 31, 2015 |
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Abstract
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Heat aging of the composition comprising melt-fabricable tetrafluoroethylene/perfluoro(alkyl vinyl ether) copolymer, the alkyl containing 1 to 5 carbon atoms and melt flowable polytetrafluoroethylene is effective to cause thermal transformation of the composition in the solid state, which is epitaxial co-crystallization of the polymer components of the composition, and other valuable changes, such as increased continuous use temperature.
First claim
Opening claim text (preview).
The invention claimed is: 1. Heat-aged composition comprising melt-fabricable tetrafluoroethylene/perfluoro(alkyl vinyl ether) copolymer, wherein said perfluoroalkyl contains 1 to 5 carbon atoms, and melt flowable polytetrafluoroethylene, the heat aging of said heat aged composition being carried out at a temperature greater than 260° C. with said composition being in the solid state, said heat aged composition exhibiting one or more of the following: (a) a continuous use temperat…
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Operations & Transport · mapped topic
Cross-Sectional Technologies · mapped topic
Chemistry & Metallurgy · mapped topic
- B29C71/0063Primary
Operations & Transport · mapped topic
Chemistry & Metallurgy · mapped topic
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- What does patent US8993695B2 cover?
- Heat aging of the composition comprising melt-fabricable tetrafluoroethylene/perfluoro(alkyl vinyl ether) copolymer, the alkyl containing 1 to 5 carbon atoms and melt flowable polytetrafluoroethylene is effective to cause thermal transformation of the composition in the solid state, which is epitaxial co-crystallization of the polymer components of the composition, and other valuable changes, s…
- Who is the assignee on this patent?
- Du Pont
- What technology area does this patent fall under?
- Primary CPC classification B29C71/0063. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Mar 31 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).