Imparting stain resistance to certain fibers

Details Imparting stain resistance to certain fibers Imparting stain resistance to certain fibers

1986-11-28

1987-10-13

Page, Thurman K.

Coating processes

With post-treatment of coating or coating material

Heating or drying

4273933, 427389, 4273899, 428 96, B05D 302

Patent

active

046998128

ABSTRACT:
Fibers containing free amino groups, and especially polyamide fibers, can be made resistant to certain stains, especially those resulting from food grade dyes, by contacting the fiber with a solution of an aliphatic sulfonic acid containing 8 to 24 carbon atoms. Branched chain aliphatic sulfonic acids are more effective than the linear aliphatic sulfonic acids, and branching at the carbon bearing the sulfonic acid group is more effective than branching at any other carbon. Contacting the fiber with the solution of the aliphatic sulfonic acid needs to be done under acidic conditions, most preferably at a pH between 0.5 to 5.0.

REFERENCES:
patent: 3689466 (1972-09-01), Bridgeford et al.
patent: 4501592 (1985-02-01), Ucci et al.
patent: 4592940 (1986-06-01), Blyth et al.

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