Chemistry of carbon compounds – Miscellaneous organic carbon compounds
Patent
1976-10-01
1978-02-21
Jacobs, Lewis T.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
106 14, C08L 6302
Patent
active
040751538
ABSTRACT:
An improved corrosion-resistant two component epoxy-amine primer system is disclosed wherein the first component of the primer system includes a liquid solution of a resinous polyepoxide, such as a diglycidyl ether of bisphenol A, and the second component comprises a liquid solution of an epoxy curing agent carrying a plurality of amino hydrogen atoms. In accordance with the invention, at least one of the components, preferably the first, contains a finely divided siliceous material having OH groups, such as talc, clay, or hydrous silica prereacted with an alkoxy group of a polyalkoxy silane or siloxane carrying at least one active hydrogen atom from an amine or mercaptan group which is reactive with the epoxy group of the polyepoxide. In addition, at least one of the components contains one or more inorganic corrosion-resistant chromate pigments. The inclusion of the pretreated siliceous material improves the corrosion resistance of the epoxy-amine primer system because it links together the epoxy resin with the siliceous material to render the resulting primer more resistant to penetration by water or electrons which might otherwise form a corrosion cell.
REFERENCES:
patent: 3505269 (1970-04-01), Jeffery et al.
patent: 3510444 (1970-05-01), Vandenberg et al.
patent: 3532653 (1970-10-01), Smeal
patent: 3578615 (1971-05-01), Moore et al.
patent: 3598616 (1971-08-01), Gibson et al.
patent: 3829395 (1974-08-01), Goodell
DeSoto, Inc.
Jacobs Lewis T.
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