Radiation imagery chemistry: process – composition – or product th – Stripping process or element – Forming nonplanar image
Patent
1986-04-11
1987-05-26
Brammer, Jack P.
Radiation imagery chemistry: process, composition, or product th
Stripping process or element
Forming nonplanar image
430260, 430271, 430273, 430311, 430345, G03C 300
Patent
active
046686045
ABSTRACT:
Photosensitive coating composition consisting essentially of an ethylenic unsaturated compound, a photoinitiator or photoinitiator system, an organic polymeric binder, discrete, substantially nonswellable, nonagglomerating, crosslinked beads, 0.1 to 4.0 .mu.m in average diameter size, at least 90% of the beads by population below 6.0 .mu.m, as defined and a solvent for the binder. The crosslinked beads can be present in positive-working systems. Preferred beads are trimethylolpropane triacrylate. The coating composition can be dried quickly into the form of a film which is useful as a dry film photoresist.
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Cohen Abraham B.
Webers Vincent J.
Brammer Jack P.
E.I. Du Pont de Nemours and Company
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