Abstract: A powdered, uniformly mixed photographic processing composition is prepared with intense mixing of dry photoprocessing chemical components, and by forming uniformly sized agglomerates of the mixed powder. During agglomeration, a solution of a binder material is applied in a controlled manner to enable the mixed powder particles to stick together but without leaving much residue in the final composition. With this process, the mixed powder and agglomerates each have desired uniformity in size and chemical composition. The resulting dry uniformly mixed composition is highly stable, dissolvable and substantially free of dust.

Abstract: A powdered, uniformly mixed photographic developing composition is prepared with intense mixing of dry photoprocessing chemical components, one of which is a photographic developing agent, and by forming uniformly sized agglomerates of the mixed powder. During agglomeration, a solution of a binder material is applied in a controlled manner to enable the mixed powder particles to stick together but without leaving much residue in the final composition. With this process, the mixed powder and agglomerates each have desired uniformity in size and chemical composition. The resulting dry uniformly mixed developer composition is highly stable, dissolvable and substantially free of dust. An antioxidant is also applied to the dry uniform mixture during agglomeration to reduce the loss of developing agent activity.

Abstract: A powdered, uniformly-mixed photographic processing composition is prepared with intense mixing of dry photoprocessing chemical components, and by forming uniformly sized agglomerates of the mixed powder. During agglomeration, a hot melt binder polymer is applied in a controlled manner to enable the uniformly-mixed powder particles to stick together with little residue in the final composition. With this process, the mixed powder and agglomerates each have the desired uniformity in size and chemical composition. The resulting dry composition is highly stable, dissolvable and substantially free of dust.

Abstract: A powdered, uniformly mixed photographic developing composition is prepared with intense mixing of dry photoprocessing chemical components, one of which is a photographic developing agent, and by forming uniformly sized agglomerates of the mixed powder. During agglomeration, a solution of a binder material is applied in a controlled manner to enable the mixed powder particles to stick together but without leaving much residue in the final composition. With this process, the mixed powder and agglomerates each have desired uniformity in size and chemical composition. The resulting dry uniformly mixed developer composition is highly stable, dissolvable and substantially free of dust. An antioxidant is also applied to the dry uniform mixture during agglomeration to reduce the loss of developing agent activity.

Abstract: A powdered, uniformly mixed photographic processing composition is prepared with intense mixing of dry photoprocessing chemical components, and by forming uniformly sized agglomerates of the mixed powder. During agglomeration, a solution of a binder material is applied in a controlled manner to enable the mixed powder particles to stick together but without leaving much residue in the final composition. With this process, the mixed powder and agglomerates each have desired uniformity in size and chemical composition. The resulting dry uniformly mixed composition is highly stable, dissolvable and substantially free of dust.

Abstract: A powdered, uniformly-mixed photographic processing composition is prepared with intense mixing of dry photoprocessing chemical components, and by forming uniformly sized agglomerates of the mixed powder. During agglomeration, a hot melt binder polymer is applied in a controlled manner to enable the uniformly-mixed powder particles to stick together with little residue in the final composition. With this process, the mixed powder and agglomerates each have the desired uniformity in size and chemical composition. The resulting dry composition is highly stable, dissolvable and substantially free of dust.

Abstract: There is described a process for avoiding dioxane formation during the depolymerization of polyester into glycol and ester components by passing superheated methanol through a reaction mixture containing polyester, oligomer and contaminants that are capable of forming sulfuric or halogen acids, the process comprising the step of adding sufficient base to neutralize any acid formed from the contaminants.