US 2013/0078481 A1 · Metal Plating Polyacetal Compositions

Abstract

Metal coated molded polymer articles are described made from a polyoxymethylene polymer. In accordance with the present disclosure, the molded articles are produced from a polymer composition containing a functionalized polyoxymethylene polymer combined with a metal pigment. The functionalized polyoxymethylene polymer may comprise a polyoxymethylene polymer that has a significant amount of hydroxyl groups present in the terminal positions. The terminal positions can be on the end of the polymer chain or on the side of the polymer chain. In one embodiment, the metal coating is applied to the molded article using an electrolytic plating process. Electrolytic coatings applied to substrates made in accordance with the present disclosure have displayed excellent peel strengths.

Claims21

Dependent claims

A molded product having a metallic appearance comprising:

a shaped article comprised of a polymer composition, the polymer composition comprising a polyoxymethylene polymer having terminal groups and wherein at least about 50% of the terminal groups are hydroxyl groups, the polymer composition further containing a metallic pigment, the metallic pigment being present in the polymer composition in an amount from about 2% by weight to about 20% by weight, at least certain of the metallic pigment being exposed on an exterior surface of the shaped article;
and
a metallic coating located on the exterior surface of the shaped article, the metallic coating having a thickness of from about 0.5 microns to about 100 microns, the metallic coating comprising an elemental metal.

Dependencies are inferred from the claim text.

Metal Plating Polyacetal Compositions

Life of this patent

Metal Plating Polyacetal Compositions

Life of this patent

Abstract

Claims21