Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From carboxylic acid or derivative thereof
Reexamination Certificate
2008-07-08
2008-07-08
Puttlitz, Karl (Department: 1621)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From carboxylic acid or derivative thereof
C528S310000
Reexamination Certificate
active
07396898
ABSTRACT:
The present invention relates to a novel diamine, a novel acid dianhydride, and a novel composition containing a polyimide produced from such diamine and acid dianhydride. Specifically, the present invention relates to an acid dianhydride that has a photosensitive group bonded through the mediation of an alkylene group or a fluoroalkylene group, a diamine that has a reactive group bonded through the mediation of an alkylene group or a fluoroalkylene group, and a polyimide composition that contains a novel polyimide having at least one of such acid dianhydride residue and diamine residue in a molecule thereof. Particularly, an object of the present invention is to provide a novel polyimide that has both photoreactivity and thermoreactivity specific to the reactive group and whose reactive group is selected from the group consisting of: organic groups derived from cinnamic acid, chalcone, furylacryloyl, benzalacetophenone, stilbene, coumarin, and pyrone; allyl; propargyl; ethinyl; CH2═CH—; CH2═C(CH3)—; and skeletons derived therefrom, and it to provide a novel diamine and a novel acid dianhydride that may be contained in the polyimide composition.
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Brinks Hofer Gilson & Lione
Kaneka Corporation
Puttlitz Karl
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