Patent ID: 7214466

Claim:
A thick film photoimageable composition comprising: (I) finely divided particles of inorganic material comprising: (a) functional phase particles selected from electrically conductive, resistive, and dielectric particles; (b) inorganic binder having a glass transition temperature in the range of from 325 to 600° C., a surface area of no greater than 10 m 2 /g and at least 85 wt. % of the particles having a size of 0.1–10 μm; dispersed in: (II) an organic medium comprising; (c) aqueous developable 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, styrenes, substituted styrenes or combinations thereof and (2) an acidic comonomer comprising ethylenically unsaturated carboxylic acid containing moiety; (d) cationically polymerizable monomer, (e) photoinitiation system; and (f) organic solvent.