C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
154/120, 190/38,
C08F 8/28 (2006.01) B29C 65/76 (2006.01) B65D 35/08 (2006.01) C08F 20/28 (2006.01) G03C 8/34 (2006.01)
Patent
CA 1082090
ABSTRACT OF THE DISCLOSURE A container (pod) is disclosed for photographic processing liquid which contains an aromatic alcohol in which a cavity-forming layer is provided for a strong seal at the edge areas of the container (2 to 3 lbs./in.). However, in selected edge areas of the cavity-forming layer an additional adhesive layer is located which provides for a more easily bursting seal. This differentially weaker seal/stronger seal effect is accomplished by the use of an adhesive layer comprising a a) crosslinked homopolymer of 2-acetoacetoxyethyl methacrylate or a crosslinked copolymer of this compound with specific norbornyl esters of methacrylic acid or b) crosslinked homopolymer of specific norbornene esters of methacrylic acid. The cohesive strength of such a polymerized and cross-linked composition is such that it permits the bursting of the adhesive layer at a desired level of pressure (0.3 to 0.7 ??./in.).
277640
Eastman Kodak Company
Gowling Lafleur Henderson Llp
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