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

1995-09-05

Lusignan, Michael

Coating processes

With post-treatment of coating or coating material

Heating or drying

811554, 811556, 428 96, 428395, 4284744, B05D 302

Patent

active

054477557

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: 5032136 (1991-07-01), Fitzgerald et al.
patent: 5073442 (1991-12-01), Knowlton et al.
patent: 5074883 (1991-12-01), Wang
patent: 5131909 (1992-07-01), Hangey

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