The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 07, 2010
Filed:
Aug. 11, 2006
Mario A. Perez, Burnsville, MN (US);
Thomas L. Wood, Hudson, WI (US);
Salvatore M. Attaguile, Cedar Park, TX (US);
Mario A. Perez, Burnsville, MN (US);
Thomas L. Wood, Hudson, WI (US);
Salvatore M. Attaguile, Cedar Park, TX (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
A coated article and method therefor comprises a metal substrate comprising a layered coating composition on at least one surface thereof, the coating composition comprising a layer of epoxy on one or more of the surfaces of the substrate. The coating composition further comprises an overcoat layer comprising a combination of polyolefin and epoxy resins, the overcoat layer optionally being free of added epoxy curative. The article can be a pipe, vessel, conduit, rod, profile-shaped article, or tube. A preferred overcoat layer comprises a semi- or full-epoxy/polyolefin interpenetrating polymer network (IPN). In another embodiment, the coated article comprises a polyolefin/epoxy layer that is directly coated on at least one surface of a metal substrate, the polyolefin/epoxy coating being overcoated with a thermoplastic top coating, the coated article being free of added adhesive. The metal article preferably is a pipe, vessel, conduit, rod, profile shaped article or tube.