PROCESS FOR THE ENHANCEMENT OF THERMOSTABILITY

摘要

The invention relates to an auxiliary composition comprising (A) from 5 to 95 % by weight, based on the total composition, of at least one compound of formula (1a) or (1b) Y₁-X-Y₂ (1a) A₁A₂N-OH (1b) wherein X is a divalent aliphatic, aromatic, araliphatic or cycloaliphatic radical, Y₁ and Y₂ are each independently of the other -OH, -CO-OR₁, -NR₁R₂, -CO-NH-NR₁R₂ or -NH-CO-NH-NR₁R₂, wherein R₁ and R₂ are each independently of the other hydrogen, C₁-C₂₀alkyl, C₁-C₂₀alkoxy, C₅-C₂₄cycloalkyl, C₅-C₃₀aryl or C₆-C₃₆aralkyl, it being possible for the alkyl, alkoxy, cycloalkyl, aryl or aralkyl groups to be unsubstituted or substituted by one or more hydroxy, amino, sulfo or carboxyl groups or halogen atoms, A₁ and A₂ are each independently of the other C₁-C₂₀alkyl or C₆-C₃₆aralkyl; (B) from 0 to 95 % by weight, based on the total composition, of one or more anionic or non-ionic surfactants or dispersants; and (C) from 0 to 85 % by weight, based on the total composition, of a solid, inorganic or organic acid; the sum of the amounts of components A + B + C being 100 % by weight in each case, and also to a method of improving the thermal stability of natural or synthetic textile fibre materials that are undyed, fluorescent whitened or dyed.