Polysilicate vehicle for one package coating compositions

Details Polysilicate vehicle for one package coating compositions Polysilicate vehicle for one package coating compositions

C - Chemistry, Metallurgy

08

L

31/39, 400/7208

C08L 83/02 (2006.01) C09D 5/08 (2006.01)

Patent

CA 1076734

ABSTRACT OF THE DISCLOSURE A vehicle for a single package coating composition is provided herein. It consists essentially of a hydrolyzed alkyl polysilicate having a hydrolysis level of from 50 to 65 percent; an organic solvent; and from 3 to 5.5 percent by weight of zinc chloride based on the total weight of the hydrolysate; the hydrolysate being obtained by hydrolyzing the alkyl polysilicate containing 40 percent SiO2 in the presence of an organic solvent, and water in an amount of from 0.08 to 0.21 mole per mole of alkoxy present on the alkyl polysilicate at a pH of from 1.0 to 6.5. The resulting vehicle composition is mixed with a cathodically active metal and, if desired, fillers to form a coating which exhibits a high degree of stability and is highly resistant to corrosion.

268766

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