Graphite film and process for producing graphite film
US9637386B2 · kind B2 · utility
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5Claims
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Key dates
| Filing date | Nov 28, 2016 |
| Grant date | May 2, 2017 |
| Priority date | — |
| Expiry date | Nov 28, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L77/06
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A graphite film which is low in graphite dust generation can be produced by properly selecting acid dianhydride and diamine which constitute a polyimide film, which polyimide film is a raw material of the graphite film. Specifically, the graphite film which is low in graphite dust generation can be obtained if (1) the acid dianhydride is PMDA and the diamine has a molar ratio of ODA/PDA in a range of 100:0 to 80:20, or (2) the acid dianhydride has a molar ratio of PMDA/BPDA in a range of 80:20 to 50:50, and the diamine has a molar ratio of ODA/PDA in a range of 30:70 to 90:10.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.