Photosensitive resin composition comprising a halogen-free...

Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Radiation sensitive composition or product or process of making

Reexamination Certificate

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C540S122000, C540S135000, C540S139000

Reexamination Certificate

active

08034531

ABSTRACT:
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, R2is 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, R4or SO2NHR5, wherein R3, is C1,-C4,-Alkyl or phenyl, R4, is C1,-C4-Alkyl or phenyl and R5is 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.

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