Synthesis and evaluation of positive-acting photosensitive polyimides with phenol moiety
โ Scribed by Masayuki Oba; Yoshiaki Kawamonzen
- Publisher
- John Wiley and Sons
- Year
- 1995
- Tongue
- English
- Weight
- 593 KB
- Volume
- 58
- Category
- Article
- ISSN
- 0021-8995
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Two chalcone-derivative isomers, 4,4-diaminochalcone ( 4DAC ) and 3,3diaminochalcone ( 3DAC ), were synthesized and used as monomers together with tetracarboxylic dianhydrides to prepare novel photosensitive polyimides that contain a chalcone moiety in the main chain. The polyimides were characteriz
Polyimides having pendant carboxyl groups were prepared by a direct one-pot polycondensation of 4,4ะ-(hexafluoroisopropylidene)diphthalic anhydride (6FDA) with 3,5-diaminobenzoic acid (DABz) and bis [4-(3-aminophenoxy)phenyl]sulfone (m-BAPS) in the presence of a โฅ-valerolactone/pyridine catalyst sys
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