Bis(hydroxyphenil) sulfone resoles as polyamide stain-resists

Details Bis(hydroxyphenil) sulfone resoles as polyamide stain-resists Bis(hydroxyphenil) sulfone resoles as polyamide stain-resists

D - Textiles, Paper

06

M

D06M 15/41 (2006.01) C08G 8/08 (2006.01)

Patent

CA 2154670

Polyamide fibrous substrates which resist staining by acid dyes, and processes for preparing the same which comprise applying a base-catalyzed condensation product formed by the reaction of a bis(hydroxyphenyl)sulfone with formaldehyde to give a product known as a resole. The resulting non-sulfonated, non-carboxylated resole stain- resist agents can be applied at higher pH values than prior art stain-resists which were sulfonated or carboxylated.

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