Polyamide fiber
AssigneeE. I. Du Pont de Nemours and Company
InventorGordon Mars Moulds
Life of this patent
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Abstract
This invention relates to fibers, filaments, yarns and fabrics of selected polyamides wherein the fibers contain the reaction product of absorbed reactants comprising a tetrakis(hydroxymethyl)phosphonium compound and a member of the group consisting of: (A) melamine-formaldehyde condensate; (B) melamine-formaldehyde condensate and magnesium ammonium phosphate hexahydrate; (C) guanidine magnesium phosphate; and (D) guanidine phosphate; In such amount as to provide between 0.4 and 3.0% by weight of phosphorus.
Claims3
A polyamide fiber selected from the group of poly(p-phenylene terephthalamide), poly(chloro-p-phenylene terephthalamide), poly(p-phenylene chloroterephthalamide), and poly(p-benzamide), said fiber containing the reaction product of 2 to 5 parts of a tetrakis(hydroxymethyl)phosphonium compound and one part of a member of the group of
- (A) melamine-formaldehyde condensate;
- (B) melamine-formaldehyde condensate and magnesium ammonium phosphate hexahydrate;
- (C) guanidine magnesium phosphate;
- and
- (D) guanidine phosphate;
- in such an amount as to provide between 0.4 and 3.0% by weight of phosphorus.
Dependencies are inferred from the claim text.