The bleeding of lignosulfonates from lignosulfonate-treated substrates when contacted under humid conditions is reduced by rendering the lignosulfonates water-insoluble via reacting them with an amine polymer-epichlorohydrin adduct containing at least one quaternary ammonium group under acidic conditions.

Het aftappen van lignosulfonates van lignosulfonate-behandelde substraten wordt wanneer gecontacteerd in de vochtige omstandigheden verminderd door lignosulfonates te maken via reagerende hen niet in water oplosbaar met amine polymeer-epichlorohydrin adduct die minstens één quaternair ammoniumgroep bevat in de zuurrijke omstandigheden.

 
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