Optical super-sensitized silver halide emulsion

Abstract

Abstract A SENSITIZED PHOTOGRAPHIC SILVER HALIDE EMULSION IS PREPARED BY INCORPORATING A DYE OF THE GENERAL FORMULA SET OUT BELOW AND A FORMALIN CONDENSATE INTO THE SILVER HALIDE EMULSION. (-Y-N(-R1)-(CH=CH)N1-)>C=(CH-C(-R2))N2-C<(-CO-N(-R)-C(=CH- C<(-Y''-N(+)(-R2)=(CH-CH)N3=))-Q-) (X(-))(N-1) WHEREIN R1 AND R2 EACH REPRESENTS AN ALKYL GROUP, SUCH AS, A METHYL GROUP, AN ETHYL GROUP, B-HYDROXYETHYL GROUP, B-SULFOETHYL GROUP, A Y-SULFOPROPYL GROUP, A $-SULFOBUTYL GROUP, PROPYLSULFATE GROUP, ETC.; A CARBOXYALKYL GROUP OR A DERIVATIVE THEREOF, SUCH AS A CARBOXYMETHYL GROUP, A B-CARBOXYETHYL GROUP, A 2-(2-CARBOXYETHOXY) ETHYL GROUP, ETC.; A SULFOALKYL GROUP OR A DERIVATIVE THEREOF, SUCH AS A B-SULFOETHYL GROUP, A Y-SULFOPROPYL GROUP, A &-SULFOBUTYL GROUP, A 2-HYDROXY-1-SULFOPROPYL GROUP, A 2-(3-SULFOPROPOXY)-ETHYL GROUP, A 2 - ACETOXY - 1 - SULFOPROPYL GROUP, 3 - METHOXY - 2 - (3 - SULFOPROPOXY)-PROPYL GROUP, 2 - (2 - (3 - SULFOPROPOXY)ETHOXY)ETHYL GROUP, 2-HYDROXY - 3 - (3'' - SULFOPROPOXY)PROPYL GROUP, ETC.; AN ALLYL GROUP; AN ARYL GROUP; A SUBSTITUTED ARYL GROUP; OR AN ARALKYL GROUP R REPRESENTS AN ALKYL GROUP OR AN ARYL GROUP, R3 REPRESENTS A HYDROGEN ATOM, AN ALKYL GROUP OR AN ALLYL GROUP, Y AND Y'' EACH REPRESENTS AN ATOMIC GROUP NECESSARY FOR FORMING A HETEROCYCLIC RING, Q REPRESENTS AN OXYGEN ATOM OR SULFUR ATOM, X REPRESENTS AN ANION, N IS 1 OR 2, SAID N BEING 1 WHEN THE DYE FORMS AN INTRAMOLECULAR SALT AND N1, N2 AND N3 EACH IS 0 OR 1.

Inventors

• 👤 M Sawahara
• 👤 N Hinata
• 👤 Y Nakazawa
• 👤 N Tsuji

Bibliographic Details