Inventors:
Major S. Dhillon - Belle Mead NJ
Stanley F. Wanat - Scotch Plains NJ
Gerhard Sprintschnik - Branchburg NJ
Assignee:
Agfa Corporation - Wilmington MA
International Classification:
G03F 7021
Abstract:
A color ant dispersion having a pigment, a solvent composition of a C -C aliphatic alcohol, a mono- or di-C -C alkylene glycol C -C alkyl ether, or a cyclic ketone; and an aqueous alkaline soluble or swellable polymeric compound which is the reaction product of a hydroxy containing polymer and an anhydride in the presence of a catalytic amount of a tertiary amine catalyst. The pigment and the polymeric compound are present in a high relative weight ratio of from about 0. 75:1. 25 to about 1. 25:0. 75. An admixture of the dispersion, a light sensitive component diazonium compound or photopolymerizable composition and an aqueous alkaline soluble or swellable polymeric binder, when coated and dried onto a substrate, forms a photographic element, which when imagewise exposed and developed has an exceptionally high contrast between image and removed non-image areas.