Color-forming sulfonamidodiphenylamines and corresponding sulfonimide dyes

A color-forming para-sulfonamidodiphenylamine represented by the formula:

• ##STR55## wherein:
• R.sup.21 is alkoxy containing 1 to 20 carbon atoms or ##STR56## R.sup.22 is hydrogen or ##STR57## R.sup.23 is alkyl containing 1 to 20 carbon atoms, aryl containing 6 to 12 carbon atoms, alkoxy containing 1 to 4 carbon atoms, aryloxy containing 6 to 12 carbon atoms or NH--R.sup.27 ;
• R.sup.24 is hydrogen or alkyl containing 1 to 20 carbon atoms;
• R.sup.25 is hydrogen, alkyl containing 1 to 20 carbon atoms, or aryl containing 6 to 15 carbon atoms;
• R.sup.26 is alkyl containing 1 to 20 carbon atoms, cycloalkyl containing 5 to 20 carbon atoms, or aryl containing 6 to 12 carbon atoms, alkoxy containing 1 to 4 carbon atoms, aryloxy containing 6 to 12 carbon atoms or NH--R.sup.28 ;
• R.sup.27 is alkyl containing 1 to 20 carbon atoms, aryl containing 6 to 12 carbon atoms, alkoxy containing 1 to 4 carbon atoms, or aryloxy containing 6 to 12 carbon atoms;
• and
• R.sup.28 is alkyl containing 1 to 20 carbon atoms, aryl containing 6 to 12 carbon atoms, alkoxy containing 1 to 4 carbon atoms, or aryloxy containing 6 to 12 carbon atoms.

A sulfonimide dye represented by the structure:

• ##STR60## wherein:
• R.sup.58 is alkoxy containing 1 to 20 carbon atoms or ##STR61## R.sup.59 is hydrogen or ##STR62## R.sup.60 is alkyl containing 1 to 20 carbon atoms, aryl containing 6 to 12 carbon atoms, alkoxy containing 1 to 4 carbon atoms, aryloxy containing 6 to 12 carbon atoms or NH--R.sup.64 ;
• R.sup.61 is hydrogen or alkyl containing 1 to 20 carbon atoms;
• R.sup.62 is hydrogen, alkyl containing 1 to 20 carbon atoms, or aryl containing 6 to 15 carbon atoms;
• R.sup.63 is alkyl containing 1 to 20 carbon atoms, cycloalkyl containing 5 to 20 carbon atoms, or aryl containing 6 to 12 carbon atoms, alkoxy containing 1 to 4 carbon atoms, aryloxy containing 6 to 12 carbon atoms or NH--R.sup.65 ;
• R.sup.64 is alkyl containing 1 to 20 carbon atoms, aryl containing 6 to 12 carbon atoms, alkoxy containing 1 to 4 carbon atoms, aryloxy containing 6 to 12 carbon atoms;
• and
• R.sup.65 is alkyl containing 1 to 20 carbon atoms, aryl containing 6 to 12 carbon atoms, alkoxy containing 1 to 4 carbon atoms or aryloxy containing 6 to 12 carbon atoms.