Patent ID: 6747101
Filing Date: 2004-06-08
Classification: C08F,C08G,C09D,G03F

Abstract:
A photoresist formulation consisting of:(a) an epoxy acrylate of formula III â€ƒwherein Q is hydrogen or a group of formula â€ƒwherein R1 is â€”H or â€”CH3, and R2 is â€”H, â€”CH3 or phenyl, T is the radical of an aromatic bifunctional compound, M is each independently hydrogen or a group of formula â€ƒin which R1 and R2 are as defined above, A is the radical of an aromatic bifunctional compound, n is an integer from 0 to 300, L is a group of formula â€ƒor â€”Oâ€”Aâ€”OM, â€ƒin which M, R1 and R2 are as defined above, with the proviso that in formula III not all radicals M may be simultaneously hydrogen or a group of formula â€ƒbut at least 10 mol % of the radicals M that are not present in the end groups Q and L are a group of the formula â€ƒand with the proviso that when n in formula III is 0, then Q is hydrogen and L is the group of formula (b) a photoinitiator; and (c) optionally i) a (meth)acrylate monomer or (meth)acrylate oligomer or a vinyl compound that can be crosslinked with light; ii) water; iii) a Co-initiator; iv) a stabilizer; v) a thermal hardener; vi) a pigment or water-insoluble dye; vii) a water compatible organic or inorganic filler; viii) an antifoam agent; ix) an adhesion promotor; x) a fungicide; xi) a thixotropic agent; and xii) an organic solvent.