发明授权
US3622263A Process for the dyeing of polyamide textiles with metal phthalocyanine dyestuffs 失效
用金属酞菁染料染色聚酰胺纺织品的工艺

Process for the dyeing of polyamide textiles with metal phthalocyanine dyestuffs
摘要:
The process for dyeing synthetic super polyamides with metal phthalocyanine sulfonic acids wherein the improvement comprises applying a phthalocyanine containing 2-3 sulfonic acid groups in the 4- or 5-position of their benzene nuclei to provide dyeings of improved light-fastness.
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