Couplers having the general formula (I): STR1 or the acid salts thereof in which formula R is either (a) hydrogen or (b) a C1 -C3 alkyl or (c) a C1 -C3 hydroxyalkyl, and Z is either (a) hydroxyalkyl, or (b) alko
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(2008/06/13)
Metaphenylenediamines
Couplers having the general formula (I): STR1 or the acid salts thereof in which formula R is either (a) hydrogen or (b) a C1 -C3 alkyl or (c) a C1 -C3 hydroxyalkyl, and Z is either (a) hydroxyalkyl, or (b) alko
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(2008/06/13)
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