A method and a composition for improving color fastness of cellulose based substrates to nitrogen oxides and ozone

Abstract

The presently claimed invention relates to a method for improving color fastness of a cellulose based substrate to nitrogen oxides and ozone. The method comprises contacting the cellulose based substrate with a composition comprising at least one semicarbazide compound selected from bis[4-[3-(dimethylamino)ureido]phenyl]methane (I) and 4,4'-hexamethylenebis(1,1-dimethylsemicarbazide) (II), at least one solvent selected from alcohol of formula A, glycol ether of formula B, glycol ether of formula C, polyethylene glycol and water; R1-OH - A, R2-(OCH2CH2-)nOH - B, R3 -(OCH2(CH3)CH-)mOH - C, wherein R1 is selected from C2-C10 linear or branched alkyl group; R2 is selected from C1-C6 linear or branched alkyl group; n is

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