Rupturable fluid container and elements containing same

Details Rupturable fluid container and elements containing same Rupturable fluid container and elements containing same

B - Operations, Transporting

65

D

95/9.4

B65D 35/14 (2006.01) C09K 3/10 (2006.01) G03C 8/34 (2006.01)

Patent

CA 1126559

RUPTURABLE FLUID CONTAINER AND ELEMENTS CONTAINING SAME ABSTRACT OF THE DISCLOSURE Disclosed herein are containers useful for holding fluids, e.g. photographic processing materials, in photographic film units. Such containers have strong seals along certain marginal areas and relatively weak seals along other marginal areas. Such weak seals are designed to open and distribute fluid over a sheet of film or paper when pressure is applied to the container in a camera. Each weak seal is formed from a sealing composition comprising a copolymer of (a) at least about 50 percent, by weight, of a polymerizable monomer having the formula (I): Image wherein n is an integer of from 0 to 3; R1 is hydrogen or alkyl; and R2 is hydrogen, alkyl or phenyl; with (b) a copolymerizable monomer having the formula (II): Image wherein R3 is alkyl. This copolymer has a glass transition temperature of at least about 80°C.

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