B - Operations – Transporting – 22 – F
Patent
B - Operations, Transporting
22
F
31/156, 53/220,
B22F 9/24 (2006.01) C09D 5/24 (2006.01)
Patent
CA 1181597
Abstract of the Specification: Novel electriacally-conductive composition comprising an organic resin matrix and flakes of a novel conductive silver powder which is characterized by extreme thinness. The novel silver powder, and a novel process for preparing metal powders, are also described. Background of the Invention: This disclosure relates to new forms of metal powder and, in particular, to a new silver powder structure, one characterized by an extremely thin, flake-shaped structure. The powder is characterized by an ability to impart good electrically-conductive properties to silver-filled, organic-resin matrices at unprecedented low levels of filler loading. It is already known in the art to provide silver flake materials for use as conductive powders in fillings such organic rein-based matrix material as polyolefins, polyester, acrylic resins, epoxy and polylurethane resins, polyvinyl chloride, silicone resins, and the like. Indeed silver flake materials are the silver particels of choice in most compositions wherein one wishes to minimize silver content while achieving high conductivity. Silver flake use in such applications is prepared by mechanical means and has been characterized by some - 2 - 2 --
394134
Ercon Inc.
Smart & Biggar
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