Use of metal salts with superpolyamides as oxymethylene polymer stabilizers
AssigneeCelanese Engineering Resins, Inc.
InventorsJames L. Paul, Andrew B. Auerbach
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Abstract
An oxymethylene polymer composition which exhibits improved thermal stability is provided by utilizing as a stabilizer a major amount of superpolyamide and a minor amount of a transition metal salt.
Claims19
An oxymethylene polymer composition which comprises an oxymethylene polymer having incorporated therein stabilizing amounts of a superpolyamide and a transition metal salt of an organic acid or alcohol, wherein the transition metal salt of an organic acid group consisting of iron, cobalt, nickel, lathanide metals, chromium, manganese and copper.
An oxymethylene polymer composition which comprises an oxymethylene polymer and a stabilizing amount of a superpolyamide and from about 0.001 to about 1 wt. % based on the total weight of the composition of a transition metal salt of an organic acid or alcohol, wherein the transition metal is selected from the group consisting of iron, cobalt, nickel, lanthanide metals, chromium, manganese and copper, said transition metal salt being present in minor amounts relative to the amount of said superpolyamide present.
Dependencies are inferred from the claim text.