C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
96/117, 260/312,
C07D 257/04 (2006.01) C07D 271/06 (2006.01) G03C 1/06 (2006.01)
Patent
CA 1177082
ABSTRACT OF THE DISCLOSURE There are disclosed novel sulfone compounds which are represented by the formula Image wherein X represents the nonmetallic atoms necessary to form a nucleus which completes a 5- or 6-membered hetaroc?lic moiety including substituted rings and fused rings and R is alkyl, preferably having from 1 to 6 carbon atoms, aryl such as phenyl or substituted aryl. The compounds are useful in photographic applications and provide controlled release of a photographically useful material during processing of photographic elements with an aqueous alkaline processing composition. In particularly preferred embodiments the sulfone compounds are utilized in diffusion transfer photographic products and processes.
393516
Bartels-Keith James R.
Borror Alan L.
Polaroid Corporation
Smart & Biggar
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