Patent ID: 6994948

Claim:
A photoimageable composition comprising: (I) finely divided particles of inorganic material comprising: (a) coated silver that is at least partially coated with a surfactant comprising a mixture of a stearic compound and palmitic compound selected from stearic acid, palmitic acid, and salts thereof; and (b) an inorganic binder having a glass transition temperature in the range of 325 to 600° C. a surface area to weight ratio of no greater than 10 m 2 /g and at least 85 wt. % of the particles having a size in the range of 0.1–10 μm; dispersed in: (II) an organic medium comprising; (a) an aqueous developable photocrosslinkable polymer binder which is a copolymer, interpolymer or mixture thereof, wherein each copolymer or interpolymer comprises (1) a nonacidic comonomer comprising C 1-10 alkyl methacrylate, C 1-10 alkyl acrylate, styrene, substituted styrene, or combination thereof and (2) an acidic comonomer comprising an ethylenically unsaturated carboxylic acid containing moiety, wherein 2–20% of the carboxylic acid containing moiety is reacted with a reactive molecule having a first and second functional unit wherein the first functional unit is a vinyl group and the second functional unit is capable of forming a chemical bond by reaction with the carboxylic acid moiety; forming the copolymer, interpolymer or mixture thereof having an acid content of at least 10 wt. % of the total polymer weight; a glass transition temperature in the range of 50–150° C. and a weight average molecular weight in the range of 2,000–250,000; (b) a photo-initiation system; and (c) an organic solvent.