DIAZO SENSITIZER OF FLUORINATED ESTER

摘要

PURPOSE: To obtain high heat stability, high radiation stability and high insulating resistance by containing a specified hexafluoro-bis-phenol. CONSTITUTION: A photosensitive composition comprises a resin sensitizer of a reaction product of hexafluoro-bis-phenol represented by formula I or bis- hexafluoroether and diazosulfonyl chloride, such as diazo-L-sulfonyl chloride or diazo-F-sulfonyl chloride extremely compatible with a polyamide having fluorinated and hydroxyl groups. In formulae I and II, R is an H atom or a methyl or ethyl or phenyl group. The solubilities of these photosensitive compositions can be controlled easily by mixing the fluorinated and hydroxylated polyamide with sensitizers having various solubilities.