Method of evaluating polymide dissolution rate, method of producing polymide, and polymide obtained using same methods
US7973125B2 · kind B2 · utility
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Key dates
| Filing date | Mar 31, 2006 |
| Grant date | Jul 5, 2011 |
| Priority date | — |
| Expiry date | Apr 16, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/656
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of evaluating the dissolution rate of a polyimide by Raman spectroscopy, wherein the Raman spectral intensity I(a) of imide groups contained within the polyimide is measured, and I(a) is then compared with the Raman spectral intensity I(b) of imide groups contained within a polyimide with a known dissolution rate. The polyimides are preferably obtained using an aromatic tetracarboxylic dianhydride and/or an aromatic diamine.
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