Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Compositions to be polymerized by wave energy wherein said...
Reexamination Certificate
2006-10-03
2006-10-03
McClendon, Sanza L. (Department: 1711)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Compositions to be polymerized by wave energy wherein said...
C522S162000, C522S134000, C522S135000, C522S144000, C522S173000, C522S176000, C522S903000, C522S915000, C522S142000, C521S061000, C521S062000, C521S077000, C521S137000, C521S134000, C521S135000, C521S136000, C521S138000, C521S140000, C521S139000, C427S335000, C427S336000, C427S337000, C427S352000, C428S473500
Reexamination Certificate
active
07115673
ABSTRACT:
The present photosensitive resin composition2comprises a polyamic acid resin4, a photosensitive agent, a dispersible compound3dispersible in the polyamic acid resin4, and a solvent. The porous resin is obtained by removing the solvent from the photosensitive resin composition2to form a composition in which the dispersible compound3is dispersed in the polyamic acid resin4, removing the dispersible compound to make the composition porous, and curing the porous photosensitive resin composition. The porous resin enables forming a fine circuit pattern and has a low dielectric constant and, when used as an insulating layer of a circuit board, brings about improved high frequency characteristics.
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Fukuoka Takahiro
Kanada Mitsuhiro
Mochizuki Amane
Taruno Tomohiro
Yamamoto Takayuki
McClendon Sanza L.
Nitto Denko Corporation
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