Synergistic wood preservative compositions
First Claim
1. A method for preserving wood comprising contacting said wood with a combination of a copper salt and an organic biocide selected from the group consisting of tribromophenol, the salts and chelates of tribromophenol, and sodium pyrithione and the salts and chelates of pyrithione, wherein said combination forms a complex that is substantially non-leachable from said wood and wherein the weight ratio of copper to tribromophenol is in the range of about 20:
- 1 to 1;
20 and the weight ratio of copper to sodium pyrithione is about 20;
1 to 1;
2.
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Abstract
The invention is directed to synergistic biocidal compositions that combine copper salt and an organic biocide selected from the group of tribromophenol, its salts and chelates, and sodium-omadine, its salts and chelates. Wood treated with the preservative compositions have improved fungi resistance.
62 Citations
8 Claims
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1. A method for preserving wood comprising contacting said wood with a combination of a copper salt and an organic biocide selected from the group consisting of tribromophenol, the salts and chelates of tribromophenol, and sodium pyrithione and the salts and chelates of pyrithione, wherein said combination forms a complex that is substantially non-leachable from said wood and wherein the weight ratio of copper to tribromophenol is in the range of about 20:
- 1 to 1;
20 and the weight ratio of copper to sodium pyrithione is about 20;
1 to 1;
2. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- 1 to 1;
Specification