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US 7,740,692 B2Granted
Wood preservative composition
AssigneeUnion Carbide Chemicals & Plastics Technology Corporation
InventorsRobert W. Grady, William C. Hoffman, Stephen W. King
Life of this patent
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Abstract
A wood preservative composition resulting from admixing components comprising: at least one preservative metal; a quaternary ammonium compound; at least 2 amine compounds; a pH reducing agent, and water, wherein the pH of the composition is from about 7.1 to less than 8.5. Surprisingly, this combination of materials results in a stable solution that can contain a moldicide yet have a commercially acceptable shelf life.
Claims7
A composition resulting from admixing components comprising:
- at least one preservative metal;
- a quaternary ammonium compound;
- at least 2 amine compounds;
- and a pH reducing agent, and water, wherein the pH of the composition is from about 7.1 to less than 8.5, wherein the pH reducing agent comprises an aliphatic monocarboxylic acid having from 2 to 6 carbon atoms, and wherein the amine compounds comprise monoethanolamine and triethanolamine.
1 more element
A composition resulting from admixing components comprising:
- A. from about 0.5 to about 15 weight parts of a copper salt, a zinc salt or a mixture thereof;
- B. from about 0.1 to about 10 weight parts of a quaternary ammonium compound;
- C. an amount of a pH reducing agent that is sufficient to result in the composition having a pH of from about 7.1 to less than 8.5, wherein the pH reducing agent comprises at least one of oxalic acid or citric acid;
- D. from about 0.1 to about 4 weight parts of triethanolamine;
- E. from about 1 to about 40 weight parts of monoethanolamine;
- and
- F. water;
- wherein the sum of components A-F equals 100 weight parts, and wherein the composition has a pH of from about 7.1 to less than 8.5.
5 more elements
Dependencies are inferred from the claim text.