E.i. Dupont De Nemours and Company

Robert Craig Buck

Engelbert Pechhold

Donald Douglas May

Polyamide fibrous substrates which resist staining by acid dyes, and processes for preparing the same which comprise applying, at pH 2 to 10, a base-catalyzed condensation product formed by the condensation reaction of a mixture of bis(hydroxyphenyl)sulfone and at least one other phenolic compound with formaldehyde to give a product known as a resole.

Phenolic stain-resists

A composition which provides polyamide substrates with resistance to staining by acid dyes comprising (A) carboxylic acid-containing stain-resist polymers selected from:

Carboxylic acid-containing polymer/resole stain-resists

Adding to a laundry detergent a resole condensation polymer prepared by reacting bis(hydroxyphenyl)sulfone with formaldehyde in the presence of a base thereby preventing or suppressing dye-transfer and dye-bleeding during laundering of nylon, rayon, cotton, acetate, or wool fabrics is disclosed.

Prevention of dye-bleeding and transfer during laundering

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.

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West Grove, PA, United States of America

Robert Craig Buck