C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
96/100, 260/310.
C07C 335/20 (2006.01) C07D 295/18 (2006.01) G03C 1/06 (2006.01)
Patent
CA 1330437
COMPOSITIONS USEFUL AS PROMOTING AGENTS ABSTRACT Disclosed are novel compounds of the formula: Image wherein: X=-NR5R6, or -OR7; R1 and R2 are independently hydrogen, substituted or unsubstituted alkyl, haloalkyl, hydroxyalkyl, alkoxyalkyl, alkylaminoalkyl or arylalkyl having up to 18 carbons: cyclo- alkyl; phenyl or naphthyl; alkylphenyl, cyanophenyl, halophenyl or alkoxyphenyl substituents. R3 is hydrogen, benzyl, alkoxybenzyl, halobenzyl or alkylbenzyl, provided that if neither R1 nor R2 is hydrogen, then R3 is hydrogen. R4 is a divalent aromatic group which is substitu- ted or unsubstituted. R5, R6, and R7 are independently hydrogen, alkyl, hydroxyalkyl, haloalkyl, alkoxyalkyl, alkylaminoalkyl, acyl- aminoalkyl, aminoalkyl or phenylalkyl having up to 12 carbons; a cycloalkyl substituent; phenyl or naphthyl; an alkylphenyl, cyanophenyl, halophenyl or alkoxyphenyl substituent. Furthermore, either R1 and R3 or R1 and R2 can be linked to form a heterocyclic ring system containing 3-10 atoms. Additionally, R5 and R6 can be linked to form a heterocyclic ring system containing 3-10 atoms. Y is an oxygen or sulfur atom. If Y is sulfur then n=1, if Y is oxygen then n=0 or 1. These compounds are useful as high-quality dot promoting agents in negative-working photographic systems Disclosed as well are radiation-sensitive compositions and elements containing such dot promoting agents in combinations and elements when processed in a developer containing a dihydroxybenzene developing agent, a substituted benzotriazole, a sulfite preservative and an amine compound provide a method for the production of halftone dots possessing high image quality.
519177
Resnick Bruce M.
Wexler Allan J.
International Paper Company
Smart & Biggar
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