Alkaline developable liquid photoimageable solder resist ink com

Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Radiation sensitive composition or product or process of making

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430281, 430287, 522100, 522101, 522102, 522103, 525502, 525507, 525922, G03C 168

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049332597

ABSTRACT:
A composition useful as an alkaline developable liquid photoimageable solder resist ink comprising a photocurable resin, a photopolymerization initiator, a reactive diluent, a solvent and optionally, a thermosetting material as main components wherein the photocurable resin comprises a reaction product of: (A) an epoxy vinyl ester resin obtained by reacting a cresol novolak epoxy resin and an unsaturated monobasic acid, (B) a polybasic acid anhydride and (C) an alkyl ketene dimer, wherein the hydroxyl value of the photocurable resin is not more than 10 carbons. Coating films formed from the subject composition have excellent adhesion, heat resistance, moisture insulation resistance and alkaline developable properties.

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