Fixing agent for improving fastness properties of dyeings on pol

Details Fixing agent for improving fastness properties of dyeings on pol Fixing agent for improving fastness properties of dyeings on pol

1977-03-02

1979-04-03

Czaja, Donald E.

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Depilating

8 74, 8 89R, 8173, D06P 504, D06P 508, D06P 162

Patent

active

041475127

ABSTRACT:
A fixing agent for improving the fastness properties of dyeings on polyamide fibers being a new condensation product of 4,4'-dihydroxydiphenylsulfone, 4,4'-dihydroxydiphenylsulfonesulfonic acid and a lower aliphatic aldehyde, which has a mean molecular weight of about 5,000 to about 30,000 and a ratio of carbon atom content and sulfur atom content of 3.0:1 to 4.8:1, or its metal salt, and when polyamide fibers are treated with the condensation product or its metal salt, or the condensation product in the presence of a salt of metal, at a temperature of 95.degree. to 120.degree. C., the fastness properties, especially wet-fastness properties of dyeings on polyamide fibers are remarkably improved.

REFERENCES:
patent: 3290111 (1966-12-01), Hees et al.

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