Patent ID: 7569165

Claim:
A composition comprising: (I) finely divided particles of inorganic material comprising: (c) a metal oxide with metallic or semi-metallic conductivity selected from an oxide of two or more elements selected from Ba, Ru, Ca, Cu, Sr, Bi, Pb, and the rare earth metals wherein said metal oxide has a surface to weight ratio in the range of 2 to 20 m 2 /g; (d) inorganic binder having a glass transition temperature in the range of from 300 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, wherein said inorganic binder comprises, based on weight percent total glass binder composition: 55-85% Bi 2 O 3 , 0-20% SiO 2 , 0-5% Al 2 O 3 , 2-20% B 2 O 3 , 0-20% ZnO, 0-15% of one or more of oxides selected from BaO, CaO, and SrO; and 0-3% of one or more of oxides selected from Na 2 O, K 2 O, Cs 2 O, Li 2 O and mixtures thereof; dispersed in: (II) an organic medium comprising; (c) aqueous developable photocrosslinkable polymer which is a copolymer, interpolymer or mixture thereof, wherein each copolymer or interpolymer comprises (1) a nonacidic comonomer comprising a C 1-10 alkyl acrylate, C 1-10 alkyl methacrylate, styrene, substituted styrene or combination thereof and (2) an acidic comonomer comprising 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; and organic solvent and wherein said glass binder composition is lead-free.