Photographically useful compounds including at least one 1,3-sulfur-oxygen ring system
AssigneePolaroid Corporation
InventorsPeter Viski, David P. Waller
Life of this patent
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Abstract
There are described heat-developable photosensitive image-recording materials which include a compound having at least one cyclic 1,3-sulfur-oxygen moiety. The compound is stable in the photographic processing composition but capable of undergoing cleavage in the presence of an imagewise distribution of silver ions and/or soluble silver complex made available as a function of development to liberate a reagent in an imagewise distribution corresponding to that of the silver ion and/or the soluble silver complex. The reagent includes a photographically useful group such as a complete dye or dye intermediate.
Claims20
A compound represented by the formula ##STR16## wherein:
- R.sub.1 is represented by any of the formulae below ##STR17## E is an electron donating group selected from the group consisting of amino, substituted amino selected from the group consisting of ##STR18## alkoxy, hydroxyl, alkyl and thioalkyl, provided that when R.sub.1 is represented by formula II(a), E is selected from the group consisting of amino, substituted amino selected from the group consisting of ##STR19## alkoxy, alkyl and thioalkyl;
- L represents a divalent organic linking group containing at least one carbon atom;
- PUG represents a photographically useful group selected from the group consisting of a dye radical and a dye intermediate;
- Q represents a hydrogen atom, alkyl, benzene, dimethylaminobenzene, alkoxy, or thioalkyl, or Q is the same as R.sub.1 when R.sub.1 is represented by formula (IIa) or formula (IIb), or Q is formula (IIa) when R.sub.1 is represented by formula (IIb), or Q is formula (IIb) when R.sub.1 is represented by formula (IIa), or when R.sub.1 is represented by formula (IIc), Q is -L-PUG-, provided that at least one of R.sub.1 and Q includes PUG;
- Z represents the carbon atoms necessary to complete a 5- or 6-membered 1,3-sulfur-oxygen ring system;
- B represents a ballast group for rendering said compound substantially immobile and non-diffusible during processing selected from the group consisting of an alkyl chain having from 10 to 22 carbon atoms and a phenyl ring substituted with an alkyl group having from 8 to 22 carbon atoms;
- p is an integer from 0 to 3;
- c is 0 or 1;
- m is an integer from 0 to 3;
- k is 0 when c is 0;
- k is 1, 2, or 3 when c is 1;
- and
- X represents a multivalent chemical linkage which may attach one, two or three additional said 1,3-sulfur-oxygen ring systems to said 1,3-sulfur-oxygen ring system, when k is 1, 2 or 3, respectively.
Dependencies are inferred from the claim text.