Polyamide antiozonants
AssigneeMonsanto Company
InventorsJames S. Ridgway, Donald A. Holmer, Oscar A. Pickett, Jr.
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Abstract
Novel compounds produced by reacting 5-sulfoisophthalic acid or a salt thereof (e.g. the potassium salt) with a water soluble copper salt (e.g. cupric acetate monohydrate) are described. The compounds are effective antiozonants for polyamide fibers, particularly, when the fibers are dyed with disperse dyes. Generally, sufficient amounts of the compounds are incorporated into the fibers to provide from 10 to 100 ppm, on weight of fiber, of copper.
Claims7
A polyamide fiber having incorporated therein as an antiozonant a reaction product produced by reacting at least one 5-sulfoisophthalic acid of the formula ##STR4## where Z is hydrogen, ammonia or an alkali metal, with at least one water soluble copper salt, wherein the amount of said reaction product incorporated in said fiber is an amount sufficient to provide from about 10 to about 100 parts per million of copper, based on the weight of the polyamide.
Dependencies are inferred from the claim text.