| 摘要 |
The invention relates to a photoimageable composition comprising: finely divided particles of inorganic material comprising conductive particles selected from RuO2, ruthenium-based polynary oxides or mixtures thereof; inorganic binder having a glass transition temperature in the range of from 325 to 600°C, a surface area of no greater than 10 m2/g and at least 85 wt. % of the particles having a size of 0.1- 10 mum; dispersed in an organic medium comprising aqueous developable photocrosslinkable polymer which is a copolymer, interpolymer or mixture thereof, wherein each copolymer or interpolymer comprises (1) a nonacidic comonomer comprising a C1-10 alkyl acrylate, C1- 10 alkyl methacrylate, styrenes, substituted styrenes or combinations 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 mixtures thereof having an acid content of at least 10 wt. % of the total polymer weight; a glass transition temperature of 50-150°C and a weight average molecular weight in the range of 2,000-250,000; photoinitiation system; and organic solvent.
|
