Photoimageable polyimide

Details Photoimageable polyimide Photoimageable polyimide

C - Chemistry, Metallurgy

08

G

C08G 73/10 (2006.01) G03F 7/038 (2006.01)

Patent

CA 2077525

K-18780/A/CGC 1573 Photoimageable Polyimide Abstract of the Disclosure The present invention relates to maleic anhydride terminated homopolyimides and copolyimides of aromatic tetracarboxylic acids and aromatic diamines which are substituted in the two ortho-positions relative to at least one N atom by alkyl, alkoxy, alkoxyalkyl, cycloalkyl or aralkyl and which contain about 0.0001 to about 25 mol% maleic anhydride, exhibit increased mechanical properties, such as, improvements in elongation at break and improved solvent resistance. The polyimides are suitable for the production of films, protective coatings and photographic relief images.

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