Low odor creosote-based compositions and uses thereof
AssigneeStella-Jones Inc.
InventorGordon Murray
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Abstract
Provided is a wood treatment composition comprising a reaction product produced by reacting a mixture, which includes creosote and a fatty ester component, in the presence of a Lewis acid catalyst. The reaction mixture may optionally include bunker oil and/or a borate ester. The mixture may comprise i) at least about 85 wt % creosote; and ii) at least about 1 wt % of an ester component containing one or more C8-C50 fatty esters. Also provided are wood treated with the composition and methods for using the composition to treat wood.
Claims25
A wood treatment composition comprising a reaction product produced by reacting a mixture in the presence of a Lewis acid catalyst, wherein the mixture comprises
- i) at least about 85 wt % creosote;
- and
- ii) at least about 1 wt % of an ester component containing one or more C8-C50 fatty esters.
A wood treatment composition produced by reacting a mixture comprising:
- i) at least about 40 wt. % creosote;
- ii) about 1 to 10 wt. % of an ester component, which comprises C1-C6 alkyl esters of C10-C22 fatty acids;
- iii) about 1 to 15 wt. % of a borate ester;
- and
- optionally, bunker oil;
- wherein the mixture is reacted in the presence of a Lewis acid catalyst at a temperature of at least about 150° F. (65° C.);
- and
- the wood treatment composition contains less than 2 wt. % water and has a headspace naphthalene concentration at 70° C. of no more than about 10 μg/m3 and an open-cup flashpoint of at least 66° C.;
- and the composition remains a substantially homogenous solution at a temperature of 15° C. to 35° C. for up to one month.
Dependencies are inferred from the claim text.