Back to results
US 11,930,817 B2Granted
Wood preservatives
OwnerSelvanathan Arumugam, David A. Laganella +1inventors
InventorsSelvanathan Arumugam, David A. Laganella, Randall W. Stephens
Life of this patent
Estimating the term…
Abstract
A wood preservative composition and method for preserving wood by contacting wood with said composition comprising a polyurethane polymer, non-aqueous solvents, and a wood preservative active.
Claims10
A method for preserving wood comprising:
- contacting wood with a wood preservation composition comprising
- a) a polyurethane polymer synthesized from
- i) a polyol comprising >95% p-propylene oxide,
- ii) an isocyanate, and
- iii) a capping agent;
- b) an organic solvent;
- and
- c) at least one wood preservative active selected from among halogenated isothiazolone biocides, halogenated carbamate fungicides and azole fungicides;
- wherein the capping agent is selected from the group consisting of a mono alcohol, a secondary amine, a primary amine with alkyl chain greater than C15 and mixtures thereof;
- and further wherein the molecular weight of the polyol is greater than or equal to 2700.
7 more elements
A wood preservation composition comprising
- a) a polyurethane polymer synthesized from
- i) a polyol comprising >95% p-propylene oxide,
- ii) an isocyanate, and
- iii) a capping agent;
- b) an organic solvent;
- and
- c) at least one wood preservative active selected from among halogenated isothiazolone biocides, halogenated carbamate fungicides and azole fungicides;
- wherein the capping agent is selected from the group consisting of a mono alcohol, a secondary amine, a primary amine with alkyl chain greater than C15 and mixtures thereof;
- and further wherein the molecular weight of the polyol is greater than or equal to 2700.
6 more elements
Dependencies are inferred from the claim text.