Corrosion inhibiting heat transfer materials
AssigneeHercules Chemical Company Incorporated
InventorFred Scholer
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Abstract
An anti-corrosion composition for use with a liquid or the liquid resulting from the addition of components is provided. The composition can comprise an acid, a phosphate ester of the acid, an inorganic phosphate, a salt of polyacrylates and a salt of an organophosphonate. The composition can be used with anti-freeze compositions or heat transfer fluids and advantageously exhibits enhanced corrosion resistance properties.
Claims41
An anti-corrosion additive for combining with a fluid or the fluid resulting from the addition of components, comprising:
- an acid;
- a phosphate ester of the acid;
- an inorganic phosphate;
- a salt of polyacrylates;
- a salt of an organophosphonate.
A heat transfer medium comprising:
- water;
- an alkyleneglycol;
- an aliphatic acid;
- a phosphate ester of an aliphatic acid;
- dipotassium phosphate;
- a sodium salt of polyacrylates;
- a sodium salt of ethylhexyldiphosphonic acid.
A heat transfer medium, comprising water, glycol, a phosphate or a phosphonate, a phosphate salt and an acid;
- the formulation being a GRAS composition capable of satisfying ASTM 1384 and 4340.
Dependencies are inferred from the claim text.