Photosensitive resin composition comprising a halogen-free...

G - Physics – 03 – F

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G03F 7/027 (2006.01) H05K 1/02 (2006.01) H05K 3/00 (2006.01)

Patent

CA 2507471

The present invention relates to a photosensitive resin composition comprising a) as a component (A) a green colorant of the formula (I) in which the rings A, B, C and D are substituted by hydroxy or by moiety wherein R, is hydrogen or C1,-C4.-Alkyl, R2 is hydrogen or C1,-C4-Alkyl, n is 0, 1, 2 or 3 and the ring E is unsubstituted or substituted by C1,-C6alkyl, C1,C6alkoxy, hydroxy, NHCOR3,NHSO2,R4 or SO2NHR5, wherein R3, is C1,-C4,-Alkyl or phenyl, R4, is C1- C4-Alkyl or phenyl and R5 is C1,-C4-Alkyl or phenyl, b) as a component (B) an alkali soluble oligomer or polymer (reactive or unreactive), c) as a component (C) a polymerizable monomer, d) as a component (D) a photoinitiator, e) as a component (E) an epoxy compound, and also, if desired, f) as a component (F) further additives, used as solder resist, etching resist or plating resist in the manufacture of printed circuit boards.

L'invention concerne une composition de résine photosensible comprenant a) un colorant vert de formule (1), comme composant (A), dans laquelle les noyaux A, B, C et D sont substitués par hydroxy ou par une fraction représentée par la figure ci-contre, dans laquelle R représente hydrogène ou alkyle C¿1?,-C¿4 ?; R¿2? représente hydrogène ou alkyle C¿1?,-C¿4?, n représente 0, 1, 2, 3, et le noyau E est substitué ou non par alkyle C¿1?,-C¿6?, alkoxy C¿1?,-C¿6?, hydroxy, NHCOR¿3?,NHSO¿2?,R¿4? ou SO¿2?NHR¿5,? R¿3? représentant alkyle C¿1?,-C¿4? ou phényle, R¿4?, représente alkyle C¿1?-C¿4? ou phényle et R¿5? représente alkyle C¿1?,-C¿4? ou phényle. Ladite composition comprend, de plus, b) un oligomère ou polymère (réactif ou non réactif) alcali soluble, comme composant (B) ; c) un monomère polymérisable comme composant (C) ; d) un photoamorceur comme composant (D) ; un composé époxy comme composant (E) ; et éventuellement des additifs supplémentaires utilisés en tant que composants (F). Tous ces composants sont utilisés en tant que réserve de soudage, réserve de gravure ou réserve d'électrodéposition dans la fabrication de cartes de circuits imprimés.

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