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US 5,310,828 AGranted
Superior stain resistant compositions
AssigneePeach State Labs, Inc.
InventorsMichael S. Williams, Thomas H. Moss, III
Life of this patent
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Abstract
Novel polymeric compositions are provided for polyamide fibers or fibers having terminal amino groups that impart stain resistance and are resistant to discoloration.
Claims14
An aromatic polymeric stain resistant composition wherein at least some of the aromatic moieties in the polymer are sulfonated and at least some of the aromatic moieties in the polymer contain free hydroxyl groups, prepared by:
- (i) allowing a hydroxyaromatic compound to react with a compound selected from the group consisting of an unsaturated carboxylic acid, unsaturated carboxylic acid anhydride, unsaturated carboxylic acid chloride, unsaturated carboxylic acid precursor, saturated carboxylic acid, saturated carboxylic acid anhydride, saturated carboxylic acid chloride, saturated carboxylic acid precursor, saturated isocyanate and an unsaturated isocyanate;
- (ii) homopolymerizing or copolymerizing the ester formed in step (i) with an aldehyde in an aldehyde condensation reaction to form an aromatic condensation polymer;
- and then (iii) allowing the product of step (ii) to react with an acrylic acid, or .alpha.-substituted acrylic acid, or a mixture thereof in the presence of a free radical agent.
Dependencies are inferred from the claim text.