Patent ID: 6083660
Filing Date: 2000-07-04
Classification: G03F,Y10S

Abstract:
A Photopolymerizable, aqueous developable, organosol photoresist and solder mask coating composition comprising(1) a plasticizer which is an ethylenically unsaturated photopolymerizable monomer, at an amount in the range of from about 30 to about 70% by weight of the total weight of the resin and plasticizer,(2) a particulate, thermoplastic resin which is soluble or dispersible in a basic aqueous solution and has a midpoint Tg greater than 110.degree. C. and an acid number greater than 110, at an amount in the range of from about 30 to about 70% by weight of the total weight of the resin and plasticizer, wherein the resin is selected from the group consisting of a copolymer of styrene and maleic acid half ester and a copolymer of N-alkylacrylamide/alkylamino(meth)acrylate/(meth)acrylic acid,(3) a tertiary amine stabilizer which is present at an amount in the range of from about 1 to about 10 parts by weight per hundred parts of resin, and is selected from the group consisting of triethyl amine, N-butyl diethanol amine, 4-methyl morpholine, and dimethyl aminoethanol,(4) a photoinitiator, and(5) a volatilizable diluent.