Metal treatment – Compositions – Heat treating
Patent
1978-08-25
1980-01-29
Kendall, Ralph S.
Metal treatment
Compositions
Heat treating
148 62, 148 616, 148 315, 260 37EP, 427386, 427388A, 427 58, 428416, 252512, 528103, 528109, 528 94, 525396, B44D 118
Patent
active
041860365
ABSTRACT:
An improvement in a weldable coating for metallic substrates containing a high molecular weight epoxy or phenoxy resin, an electroconductive pigment such as zinc and a diluent such as a glycol ether wherein the improvement resides in replacing at least about 70 weight percent of said resin with a composition containing a low molecular weight epoxy resin such as the diglycidyl ether of bisphenol A, a phenolic hydroxyl-containing compound such as a phenolic hydroxyl terminated adduct of a diglycidyl ether of a diphenolic compound such as bisphenol A and a catalyst for effecting the reaction between the epoxy resin and the adduct.
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patent: 3738862 (1973-06-01), Klarquist et al.
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patent: 3970482 (1976-07-01), Gunn
patent: 3990920 (1976-11-01), De Ridder et al.
patent: 4020220 (1977-04-01), Germano
Kennedy, Zincrometal: Coil Coatings Answer to Corrosion, Modern Paint and Coatings, Sep. 1976, pp. 21-26.
Elms William J.
Weitzel Steven A.
Carter J. G.
Kendall Ralph S.
The Dow Chemical Company
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