Method of evaluating polymide dissolution rate, method of producing polymide, and polymide obtained using same methods
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United States of America Patent
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Jul 5, 2011
Grant Date -
Jul 30, 2009
app pub date -
Mar 31, 2006
filing date -
Mar 31, 2005
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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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