Coating composition adapted for electric generators
AssigneeGeneral Electric Company
InventorMaynard R. Winstead
Life of this patent
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Abstract
A single package, air dry waterborne primer system which contains limited amounts of trace elements and offers corrosion resistance.
Claims9
An air-drying coating composition adapted to provide corrosion-resistant coatings relatively free of certain trace elements which comprises:
- (a) an alkyd resin solution;
- (b) pigments;
- (c) calcium drier;
- (d) zirconium drier;
- (e) manganese drier;
- and
- (f) water
- said composition containing not more than the following amounts of trace elements per million parts of the coating composition:
- chlorine:
- .phi.parts
- cobalt:
- 200 parts
- fluorine:
- 200 parts
- lead:
- 50 parts
- sulfur:
- 250 parts.
An air-drying coating composition adapted to provide corrosion-resistant coatings relatively free of certain trace elements which comprises:
- (a) an alkyd resin solution;
- (b) barium metaborate pigment;
- (c) other pigments;
- (d) calcium drier;
- (e) zirconium drier;
- (f) manganese drier;
- and
- (g) water
- said composition containing less than the following amounts of trace elements per million parts of the coating composition:
- chlorine:
- 100 parts
- cobalt:
- 200 parts
- fluorine:
- 200 parts
- lead:
- 50 parts
- sulfur:
- 250 parts.
An air-drying coating composition adapted to provide corrosion-resistant coatings relatively free of certain trace elements consisting essentially of:
- (a) an alkyd resin solution;
- (b) barium metaborate pigment;
- (c) other pigments;
- (d) calcium drier;
- (e) zirconium drier;
- (f) manganese drier;
- and
- (g) water,
- said composition containing less than the following amounts of trace elements per million parts of the coating composition:
- chlorine:
- 100 parts
- cobalt:
- 200 parts
- fluorine:
- 200 parts
- lead:
- 50 parts
- sulfur:
- 250 parts.
Process for forming an air-drying coating composition adapted to provide corrosion-resistant coatings relatively free of free barium ions comprising:
- admixing
- (a) an alkyd resin solution;
- (b) barium metaborate pigment
- (c) other pigments;
- (d) driers;
- (e) water;
- (f) water-soluble carbonate salt, and precipitating any free barium ions as barium carbonate.
Dependencies are inferred from the claim text.