| abstract |
It is a method of combating the loss of color in a dyed material, and the method comprises the steps of: (1) putting the material in contact with a composition that comprises an electrophilic species selected from aldehyde, succinimidyl esters and mixtures of the same; (2) contacting the material with a composition comprising a chelating agent and/or a salt of an amine and/or carboxylic acid. |