Kennecott Copper Corporation

Kennecott Corporation

David W Marshall

William R O'Day, Jr

Jagdish Chandra Agarwal

Thomas C Wilder

Kenneth W MCGrath

Edwin L Owen

A polymeric composition containing copper flake in sufficient quantities to render the entire thickness of the polymeric composition electrically conductive. The copper flake is treated to remove oxides and reacted with conventional epoxy resins modified with an epoxidized polyol (polyglycol). The formulation not only exhibits outstanding anti-fouling properties but also exhibits anti-sliming properties. The composition is useful as a gel coat and when utilized on ships, boats, and other water craft, a vessel results which requires no additional anti-fouling or anti-sliming treatment for several years. The composition can also be used to great advantage as a liner for pipes and conduits used to transport salt or fresh water where fouling of the pipes is a problem. In one embodiment of the invention, a composition is disclosed which will cure under water. This particular formulation can be used to great advantage in patching holes in copper clad hulls and the like while the vessel is in water.

Anti-fouling and anti-sliming gel coat

Copper flake is treated to remove oxides and other contaminants from its surface and incorporated into an uncured water-insoluble polymer. When applied to a marine structure such as a boat hull, the coating exhibits outstanding anti-fouling properties. The cleaned copper flake is preferably incorporated into an uncured epoxy resin modified by reaction with a polyol. In one embodiment of the invention, the coating is applied and cured underwater using a strippable carrier.

Method for achieving particle-to-particle contact in an antifouling

Anti-fouling and anti-sliming coating material

Disclosed is a method of preparing a cathode for use in the electrodeposition of metallic structures in a predetermined pattern. A porous planar member is provided with a masked region of its porous surface corresponding to the desired pattern of the metallic filaments. A mating planar surface of a cathode base is cleaned, preferably leaving a tightly adhering intermediate coating on the planar surface, and then a non-conductive material, preferably an epoxy based resin ink, is forced through the porous planar member and printed onto the planar surface of the cathode base. The masked region of the porous member will prevent the printing in a region corresponding to the desired pattern on the cathode surface.

Fabrication of cathodes for electrodeposition

Disclosed is an electrical conductor formed from a plurality of elongate filaments, at least a portion of which have a non-circular cross section, the filaments arranged such that the conductor has a substantially smooth exterior surface and high density of material of the filaments in a cross section through the conductor perpendicular to its axis. A preferred method for forming such an electrical conductor involves the continuous electroforming of a plurality of elongate conductive filaments. After such filaments are stripped from a cathode track upon which they are deposited, a number of them are bunched and/or twisted together to form an electrically conductive strand. Finally, that strand is compacted to reduce its cross sectional area to provide it with a smooth exterior surface.

Method of manufacturing flexible electrical conductor

An electrically conductive resinous composition of a copper flake, the surface of which has been cleaned by removing therefrom impurities and/or oxides, a resinous binder, an amount of copper flake in said resinous composition being from 25 to 70 percent, the impurities in said copper flake being less than 7000 ppm, said resinous composition being cured with a curative comprising a polyamide or an anhydride, or mixtures thereof; these compositions are suitable for uses such as heating panels or conformable heating shapes.

Heating panel

Disclosed is an improved cathode arrangement for use in the electroformation of metallic filaments. The cathode includes a plurality of closed-loop plating surfaces that are congruent to, and interleaved with, each other. This pattern of plating surfaces facilitates the simultaneous stripping of a number of filaments reducing the likelihood of mutual interference among the filaments being stripped.

Multiple-track cathode for electroformation of metallic filaments

Copper filled conductive epoxy

A building product, such as a roofing shingle or the like, is provided with flame resistance and protected against actinic degradation, and fouling by algae and micro-organisms by flame-spraying a metal coating on at least one side of the product and thereafter applying a second flame-sprayed coating, of copper, on the first layer to cover completely at least the one side of the product.

Growing community of inventors

North Reading, MA, United States of America

David W Marshall