Coating composition and laminate
US-2024093052-A1 · Mar 21, 2024 · US
Polytetrafluoroethylene resins that can be processed by shaping, shaped products thereof, and processes for producing the resins and shaped products
US9266984B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9266984-B2 |
| Application number | US-200913120121-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 30, 2009 |
| Priority date | Sep 30, 2008 |
| Publication date | Feb 23, 2016 |
| Grant date | Feb 23, 2016 |
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- Title
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Abstract
Official abstract text for this publication.
A polytetrafluoroethylene resin comprising polytetrafluoroethylene having a two-dimensional branched structure in the molecule is produced by exposing polytetrafluoroethylene to an ionizing radiation at a dose of no more than 10 kGy.
First claim
Opening claim text (preview).
The invention claimed is: 1. A process for producing a polytetrafluoroethylene resin having a two-dimensional branch structure, comprising polytetrafluoroethylene having a two-dimensional branched structure in the molecule, which process comprises exposing polytetrafluoroethylene to an ionizing radiation at a dose of less than 1 kGy at a temperature not lower than a melting point of un-irradiated polytetrafluoroethylene and in the absence of oxygen and further comprises any one of the following steps: extruding the irradiated polytetrafluoroethylene; compressing the irradiated polytetrafluoroethylene in a mold; rolling the irradiated polytetrafluoroethylene; or melt spinning the irradiated polytetrafluoroethylene. 2. A process for producing the polytetrafluoroethylene resin according to claim 1 , wherein the polytetrafluoroethylene to be exposed to the ionizing radiation is polytetrafluoroethylene which has been heated to a molten state and then cooled. 3. A process for producing the polytetrafluoroethylene resin according to claim 1 , the process comprising extruding the irradiated polytetrafluoroethylene at a temperature not lower than a melting point of the irradiated polytetrafluoroethylene to form a rod, fiber, tube or a film of the irradiated polytetrafluoroethylene. 4. A process for producing the polytetrafluoroethylene resin according to claim 1 , the process comprising compressing the irradiated polytetrafluoroethylene in a mold at a temperature not lower than a melting point of the irradiated polytetrafluoroethylene to form a shaped article of the irradiated polytetrafluoroethylene. 5. A process for producing the polytetrafluoroethylene resin according to claim 1 , the process comprising rolling the irradiated polytetrafluoroethylene at a temperature below a melting point of the irradiated, polytetrafluoroethylene to form a shaped article of the irradiated polytetrafluoroethylene. 6. A process for producing the polytetrafluoroethylene resin according to claim 1 , the process comprising melt spinning the irradiated polytetrafluoroethylene to form a monofilament of the irradiated polytetrafluoroethylene. 7. A process for producing the polytetrafluoroethylene resin according to claim 1 , the process comprising melt extruding the irradiated polytetrafluoroethylene to form a lamination of the irradiated polytetrafluoroethylene. 8. A process for producing polytetrafluoroethylene having a branched structure, the process comprising: heating polytetrafluoroethylene at a temperature not lower than the melting point thereof; irradiating the heated polytetrafluoroethylene with an ionizing radiation at a dose of less than 1 kGy in the absence of oxygen and further comprises any one of the following steps: extruding the irradiated polytetrafluoroethylene; compressing the irradiated polytetrafluoroethylene in a mold; rolling the irradiated polytetrafluoroethylene; or melt spinning the irradiated polytetrafluoroethylene.
Assignees
Inventors
Classifications
Treatment by wave energy or particle radiation · CPC title
Single layer [continuous layer] · CPC title
- C08F114/26Primary
Tetrafluoroethene · CPC title
Homopolymers or copolymers of tetrafluoroethylene · CPC title
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Frequently asked questions
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- What does patent US9266984B2 cover?
- A polytetrafluoroethylene resin comprising polytetrafluoroethylene having a two-dimensional branched structure in the molecule is produced by exposing polytetrafluoroethylene to an ionizing radiation at a dose of no more than 10 kGy.
- Who is the assignee on this patent?
- Tabata Yoneho, Suzuki Hideto, Ikeda Shigetoshi, and 6 more
- What technology area does this patent fall under?
- Primary CPC classification C08F114/26. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Feb 23 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).