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US 11,951,649 B2Granted
Method for producing copper carboxylate, a wood preservative composition comprising copper carboxylate, and a wood product produced therefrom
AssigneeKoppers Performance Chemicals Inc.
InventorsMd Sayful Islam, Jun Zhang
Life of this patent
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Abstract
A method for producing copper carboxylate, a wood preservative composition comprising copper carboxylate, and a wood product produced therefrom are provided. The method comprises combining a hydrocarbon solvent, a copper compound, and carboxylic acid and contacting the copper compound with the carboxylic acid in the presence of the hydrocarbon solvent to form a reaction product comprising copper carboxylate.
Claims28
A method for producing copper carboxylate, the method comprising:
- combining a hydrocarbon solvent and a copper compound to form an intermediate mixture, wherein the hydrocarbon solvent comprises a flash point in a range of 58 degrees Celsius to 140 degrees Celsius;
- heating a carboxylic acid having at least 8 carbon atoms to a temperature of at least 30 degrees Celsius to form a heated carboxylic acid;
- and
- combining the intermediate mixture and the heated carboxylic acid to form a reaction product comprising
- copper carboxylate, wherein an elemental copper concentration is in a range of 2 percent to 12 percent based on a total weight of the reaction product;
- and
- at least 20 percent by weight hydrocarbon solvent based on the total weight of the reaction product.
4 more elements
A method for producing copper naphthenate, the method comprising:
- combining a hydrocarbon solvent and a copper compound to form an intermediate mixture, wherein the intermediate mixture is at a temperature in a range of 50 degrees Celsius to 125 degrees Celsius, wherein the hydrocarbon solvent comprises a flash point in a range of 58 degrees Celsius to 140 degrees Celsius;
- heating naphthenic acid to a temperature in a range of 50 degrees Celsius to 150 degrees Celsius to form a heated naphthenic acid;
- and
- combining the intermediate mixture with the heated naphthenic acid to form a reaction product comprising
- copper naphthenate, wherein an elemental copper concentration is in a range of 2 percent to 12 percent based on a total weight of the reaction product;
- and
- at least 20 percent by weight hydrocarbon solvent based on the total weight of the reaction product.
4 more elements
Dependencies are inferred from the claim text.