Fluid container for photographic processing material

Claim 1

In a container for a fluid photographic processing material including aromatic alcohol comprising a pair of opposed walls marginally sealed together over a substantial area to provide an internal cavity adapted to retain such material, at least one of said walls being flexible and deformable, the internal surfaces of said walls bounding said cavity comprising a polymer which resists deterioration by the action of such processing material, said opposed walls being marginally sealed together over a first part of said area polymer-to-polymer, and a polymeric sealing composition interposed between said opposed walls over a second part of said area forming a seal of less strength than the seal over said first part of said area whereby said container preferentially opens along said second part of said area upon the application of pressure to said container, the improvement wherein: said polymeric sealing composition consists essentially of crosslinked homopolymer of a norbornene compound having the structure: ##STR5## wherein R' is selected from the group consisting of a hydrogen atom, a monovalent aliphatic group of from 1 to 4 carbons, and a phenyl group, R" is selected from the group consisting of a hydrogen atom and a monovalent aliphatic group of from 1 to 2 carbons, and n is 0 to 3, said homopolymer prior to being crosslinked having an inherent viscosity in benzene measured at a concentration of 0.25 g/deciliter of solution at 25° C ranging from 0.1 to 1, and said seal formed by said polymeric sealing composition between said opposed walls being substantially resistant to changes in burst strength of said seal during storage of said container.