Substrates treated with bis(hydroxyphenyl)sulfone stain-resists

Details Substrates treated with bis(hydroxyphenyl)sulfone stain-resists Substrates treated with bis(hydroxyphenyl)sulfone stain-resists

1994-08-05

1995-10-24

Thibodeau, Paul J.

Stock material or miscellaneous articles

Composite

Of polyamide

428375, 428395, 4284744, 428524, D06M 13152

Patent

active

054608910

ABSTRACT:
Polyamide fibrous substrates which resist staining by acid dyes and discoloration upon exposure to UV light, and processes for preparing the same which comprise applying, at pH 2 to 10, a base-catalyzed condensation product formed by the reaction of a bis(hydroxyphenyl)sulfone with formaldehyde to give a product known as a resole.

REFERENCES:
patent: 4501591 (1985-02-01), Ucci et al.
patent: 4680212 (1987-07-01), Blyth et al.
patent: 5073442 (1991-12-01), Knowlton
patent: 5131909 (1992-07-01), Hangey

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