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US 12,426,596 B2Granted
Wood preservatives
OwnerSelvanathan Arumugam, David A. Laganella +1inventors
InventorsSelvanathan Arumugam, David A. Laganella, Randall W. Stephens
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Abstract
A method for preserving wood by contacting wood with a composition comprising a polyurethane polymer, non-aqueous solvents, and a wood preservative.
Claims8
A method for preserving wood;
- said method comprising contacting wood with a non-aqueous wood treatment composition comprising:
- (a) a polyurethane polymer synthesized from
- i) a polyol,
- ii) an isocyanate;
- and
- iii) a capping agent
- (b) at least one organic solvent;
- and
- (c) at least one wood preservative selected from among halogenated isothiazolinone biocides, halogenated carbamate fungicides and azole fungicides;
- wherein the at least one organic solvent comprises diesel and the polyol comprises from 1 to 5% poly-i-butylene oxide and from 99 to 95% p-propylene oxide;
- and further wherein the capping agent is selected from the group consisting of a primary amine having a carbon chain length of ≥C6, a mono alcohol, and a secondary amine.
8 more elements
A non-aqueous wood treatment composition comprising:
- (a) a polyurethane polymer synthesized from
- i) a polyol,
- ii) an isocyanate;
- and
- iii) a capping agent
- (b) at least one organic solvent;
- and
- (c) at least one wood preservative selected from among halogenated isothiazolinone biocides, halogenated carbamate fungicides and azole fungicides;
- wherein the at least one organic solvent comprises diesel and the polyol comprises from 1 to 5% poly-i-butylene oxide and from 99 to 95% p-propylene oxide;
- and
- further wherein the capping agent is selected from the group consisting of a primary amine having a carbon chain length of ≥C6, a mono alcohol, and a secondary amine.
8 more elements
Dependencies are inferred from the claim text.