Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Radiation sensitive composition or product or process of making
Patent
1998-09-09
1999-12-28
Baxter, Janet
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Radiation sensitive composition or product or process of making
4302871, 522149, G03C 1725, C08J 328
Patent
active
060079665
ABSTRACT:
A photosensitive composition is disclosed particularly for making printed circuit boards. It contains: (a) a polymer binder; (b) a photoinitiator; and (c) an unsaturated photomonomer. The polymer binder is prepared from a reaction among the following reactants: (i) a styrene-maleic anhydride resin containing repeating units of styrene and anhydride groups, (ii) an unsaturated compound containing at least one hydroxy group and at least three acrylic groups, and (iii) a saturated alcohol. The styrene-maleic anhydride resin is prepared from a polymerization reaction of styrene and maleic anhydride in a molar ratio ranging from 3:1 to 1:1, and preferably has a molecular weight between 800 and 100,000.
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Ashton Rosemary
Baxter Janet
Industrial Technology Research Institute
Liauh W. Wayne
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