| 摘要 |
1479252 Treating textiles GLOBE MFG CO 7 Aug 1975 [16 Aug 1974] 33020/75 Heading DIP [Also in Divisions B5, C3 and C5] Fabrics formed, at least in part, of polyurethane fibres are stabilised against fume discolouration by incorporating therein a substituted hydroxylamine of the formula: where X is a phenyl or naphthyl radical which may be substituted by C 1-12 alkyl, halogen, aryl, aryloxy, alkoxy, hydroxy, carboxy, ester or amide and R 1 and R 2 are X, H or benzyl which may be substituted by the same substituents as X. The preferred hydroxylamine is dibenzyl hydroxylamine and is used in an amount of 0.01 to 20% by weight based on the weight of polyurethane. In a specific Example (7), a fabric containing a blend of segmented polyurethane fibres and nylon fibres is introduced into a bath containing an aqueous solution of dibenzyl hydroxylamine and heated. After rinsing in water the fabric is found to have no discolouration in a gas oven test. |
