Wood preservatives

DETAILED DESCRIPTION What we claim is: 1.
A chromium-free wood preservative consisting essentially of 1 to 35% by weight of a mixture of 25 to 75 parts by weight of a fatty amine ethoxylate and 75 to 25 parts by weight of at least one member of the group consisting of an unsaturated fatty acid of 3 to 25 carbon atoms and their copper and zinc salts and water.
2.
A wood preservative of claim 1 additionally containing 1 to 35% by weight of a water-soluble salt of a member selected from the group of copper, zinc and boron.
3.
A wood preservative of claim 2 wherein the copper or zinc is complexed with a member selected from the group consisting of ammonia, amines and alkanol amines.
4.
A wood preservative of claim 1 further containing at least one member of the group consisting of a fungicide and insecticide.
5.
A wood preservative of claim 1 further containing at least one water soluble boron compound.
6.
A wood preservative of claim 5 wherein the boron compound is a polymer quaternary ammonium borate.
7.
A wood preservative of claim 1 wherein the fatty acid amine ethoxylate is selected from the group consisting of stearyl amine ethoxylate of 10 to 30 ethylene oxide units and coconut oil amine ethoxylate of 10 to 30 ethylene oxide units.
8.
A wood preservative of claim 1 wherein the unsaturated fatty acid is undecylenic acid.
9.
A wood preservative of claim 7 wherein the unsaturated fatty acid is undecylenic acid.
10.
A method of preserving wood comprising impregnating the wood with a wood preservative of claim 1.
11.
The method of claim 10 wherein the fatty acid amine ethoxylate is selected from the group consisting of stearyl amine ethoxylate of 10 to 30 ethylene oxide units and coconut oil amine ethoxylate of 10 to 30 ethylene oxide units.
12.
The method of claim 11 wherein the unsaturated fatty acid is undecylenic acid.
13.
A wood product impregnated with a wood preservative of claim 1.
14.
A wood product impregnated with a wood preservative of claim 9.




Description:
DE-C 34 47 027 describes wood preservatives which are comprised of copper and boron compounds and contain for each gram-atom of copper, 0