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US 9,681,660 B2Granted
Pentachlorophenol/borate compositions and uses thereof
AssigneeStella-Jones Inc.
InventorGordon Murray
Life of this patent
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Abstract
Disclosed is a wood preservative composition comprising: an ester of boric acid; pentachlorophenol (PCP); and American Wood Preservative Association's (AWPA) P9 Type A solvent. The composition is useful for reducing insect and microbial decay in wood. Further disclosed are methods of making and using such compositions.
Claims26
A method of treating wood, comprising the steps of:
- a) immersing the wood in a wood treatment composition;
- and
- b) pressure impregnating the immersed wood at a pressure of about 100 to 170 psi and a temperature of about 100 to 170° F.;
- wherein the wood treatment composition comprises (i) about 3 to 12 wt. % pentachlorophenol (PCP);
- (ii) at least about 3 wt. % of a borate ester, which comprises a monoalkanolamine borate ester;
- and (iii) at least about 76 wt. % of an AWPA P9 Type A solvent, which comprises diesel and biodiesel;
- and
- the wood treatment composition is greater than 98% w/w free of water and is a substantially homogenous solution after storage at a temperature of 15 to 35° C. for one month.
5 more elements
A method of treating wood, comprising the steps of:
- a) immersing the wood in a wood treatment composition;
- and
- b) exposing the immersed wood from step (a) to conditions which cause boron to migrate into the interior of the wood;
- wherein the wood treatment composition comprises
- i) pentachlorophenol (PCP);
- ii) borate ester;
- and
- iii) American Wood Preservative Association's (AWPA) P9 Type A solvent;
- and the wood treatment composition is greater than 98% w/w free of water and is a substantially homogenous solution after storage at a temperature of 15° C. to 35° C. for one month;
- wherein the borate ester comprises a monoalkanolamine borate ester.
7 more elements
Dependencies are inferred from the claim text.