Photoimageable compositions and processes for fabrication of relief patterns on low surface energy substrates

A permanent photoimageable composition useful for making permanent photoresist relief patterns on low surface energy polymer substrates comprising:

• (i) one or more alkali soluble, film-forming resins (A) or one or more film forming resins that become soluble in alkali solutions by action of an acid (B);
• wherein the one or more alkali soluble film forming resins (A) are selected from the group consisting of phenol novolac resins, ortho-cresol novolac resins, para-cresol novolac resins, ortho, para-novolac resins, bisphenol novolac resins, polyhydroxy novolac resins, polyglutarimide resins, phenolic derivatives of C36 dimerdiols, polyester resins synthesized from polyhydric alcohols and polybasic acid compounds, the reaction products of epoxy resins, monocarboxylic acids, and polybasic acid anhydrides, and combinations thereof;
• (ii) a cationic photoinitiator (C), and a radical photoinitiator (D);
• wherein said radical photoinitiator (D) is selected from the group consisting of benzoin ethers, benzoin methyl ethers, diethoxyacetophenone, benzildimethyl ketal, hexaarylbisimidazole, 2-tertbutylanthraquinone, thioxanthone, 2-isopropylthioxanthone, 2-chlorothioxanthone, 2,4,6-trimethylbenzoyldiphenyl phosphine oxide, oxime esters, ketocoumarin derivatives, organotitanocenes, and combinations thereof;
• and wherein the radical photoinitiator (D) comprises from 0.1-10 wt %, based on the total weight of the composition;
• (iii) one or more film casting solvents (E);
• and
• (iv) one or more fluorinated compounds (F);
• wherein said fluorinated compound is selected from the group consisting of perfluorohexane, perfluorooctane, perfluorodecalin, 2,3-dihydrofluoropentane, hexafluorobenzene, 1,1,2,2,3,3,4,4-octafluorobutane, perfluorodimethylcyclohexane, perfluoroheptane, perfluoromethylcyclohexane, perfluoropentane, 1-ethoxy-1,1,2,2,3,3,4,4,4-nonafluorobutane, 1,1,1,2,2,3,4,5,5,5-decafluoro-3-methoxy-4-trifluoromethyl-pentane, 3-ethoxy-1,1,1,2,3,4,4,5,5,6,6,6-dodecafluoro-2-(trifluoromethyl)-hexane furan, 2,2,3,4,4,5-hexafluorotetrahydro-3-(pentafluoroethyl)-5-(trifluoromethyl)-cis-furan, 2,2,3,4,4,5-hexafluorotetrahydro-3-(pentafluoroethyl)-5-(trifluoromethyl)-, trans-furan, 2,2,3,4,4,5-hexafluorotetrahydro-5-(pentafluoroethyl)-3-(trifluoromethyl)-trans-furan, 2,2,3,4,4,5-hexafluorotetrahydro-5-(pentafluoroethyl)-3-(trifluoromethyl)-cis-furan, 2,3,3,4,4,5-hexafluorotetrahydro-2-(pentafluoroethyl)-5-(trifluoromethyl)-, 2h-cyclopenta[b]furan, 2,2,3,3a,4,4,5,5,6,6,6a-undecafluorohexahydro-3-(trifluoromethyl)-furan, 2,2,3,4,4,5-hexafluorotetrahydro-3,5-bis(pentafluoroethyl)-furan, 2,2,3,4,4,5-hexafluoro-3-(heptafluoropropyl)tetrahydro-5-(trifluoromethyl)-furan, 2,2,3,4,4,5-hexafluoro-5-(heptafluoropropyl)tetrahydro-3-(trifluoromethyl)-trans-furan, 2,2,3,4,4,5-hexafluoro-5-(heptafluoropropyl)tetrahydro-3-(trifluoromethyl)-cis-furan, 2,3,3,4,4,5-hexafluoro-2-(heptafluoropropyl)tetrahydro-5-(trifluoromethyl)-, 1,1,1,2,2,3,3,4,4-nonafluorohexane, perfluoromethylcyclopentane, dodecafluorodimethylcyclobutane, lh,lh,2h-perfluoro-1-decene, perfluoro-1,3-dimethylcyclohexane, lh-perfluoroheptane, perfluoroheptene-1,6h-perfluorohexane, perfluoromethyldecalin, perfluorooctene-1, lh,lh,2h-perfluoro-1-octene, perfluorononane, perfluorodecane, 1,1,1,2,2,3,3,4,4,5,5,6,6-tridecafluoro-6-methoxy-hexane, 2-difluoromethylperfluorooxolane, perfluorotri-n-butylamine/perfluoro-n-dibutylmethylamine mixture;
• perfluorotributylamine, perfluoro-N-alkylmorpholine, and combinations thereof;
• and one or more crosslinking compounds.