PHOTOGRAPHIC COLOR COUPLERS, PHOTOGRAPHIC MATERIALS CONTAINING THEM AND METHOD OF FORMING DYE IMAGES

摘要

PCT No. PCT/GB85/00460 Sec. 371 Date May 1, 1986 Sec. 102(e) Date May 1, 1986 PCT Filed Oct. 14, 1985 PCT Pub. No. WO86/02467 PCT Pub. Date Apr. 24, 1986.Novel photographic dye-forming couplers comprise an imidazo[1,2-b]pyrazole nucleus which reacts at its 3-position with an oxidized aromatic primary amino color developing agent. These couplers are monomeric or polymeric and are useful in photographic materials and processes and have improved absorption and solubility characteristics.