| 摘要 |
<p>A non-diffusible coupler of the general formula: <CHEM> in which R<1> is a cyclic or non-cyclic aliphatic hydrocarbon group which may be substituted or unsubstituted, branched or unbranched, R<2> is an aryl group which may be substituted or unsubstituted, and wherein at least one of the rings A and B contains a ballasting substituent (which may be R<1>) comprising an alkyl group whose chain is interrupted by an ester group.</p> |
