Crosslinking polymeric dye mordant composition reaction product of bisalkane or bisarene sulfonate and vinyl polymer

摘要

A dye mordant composition comprises the reaction product of (1) a vinyl copolymer derived from ethylenically unsaturated monomers comprising first and second repeating units wherein at least one third of the units are first repeating units represented by the formula: ##STR1## wherein R.sup.1 and R.sup.2 are hydrogen or alkyl and R.sup.2 may be a group containing at least one aromatic nucleus; Q is a divalent radical, R.sup.3, R.sup.4 and R.sup.5 are alkyl or aryl and R.sup.3 and R.sup.4 along with the nitrogen atom and Q may form a quaternized heterocyclic ring, and X.sup.- is an anion and the second repeating units are free of acidic carboxyl groups; and (2) a vinyl polymer crosslinking agent for the copolymer comprising a bisalkane sulfonate or bisarene sulfonate. These compositions are useful as dye mordants in photographic elements.