Treatment of textile materials to improve the fastness of dyeings made thereon
AssigneeSandoz Ltd.
InventorsJurg Heller, Bruno Kissling, Tibor Robinson, Salvatore Valenti
Life of this patent
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Abstract
Polymeric compounds (A) obtained by the reaction of epihalohydrin with a polyalkylene polyamine are useful as textile treatment agents. As pretreatment agents they improve the color yield of the subsequent dyeing, as aftertreatment agents they improve fastness properties. Certain of the products (A) are novel.
Claims22
A process for dyeing, printing or optically brightening a textile substrate comprising fibers containing nitrogen or hydroxy groups, which process comprises applying to said substrate a compound (A) or (A1) and applying subsequently thereto an anionic or basic dyestuff or optical brightener, said compound (A) being a polymeric compound obtained by the reaction of an epihalohydrin or precursur thereof with a polyalkylene polyamine (B) and said compound (A1) being a polymeric compound obtained by the reaction of a compound (A) with a N-methylol compound in the presence of a catalyst.
Dependencies are inferred from the claim text.