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US 2014/0154419 A1Published application
Preservation of wood, compositions and methods thereof
AssigneeApinee, Inc.
InventorJoseph L. Stark
Life of this patent
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Abstract
The disclosure relates to compositions for wood preservation and methods of applying compositions for wood preservation. The compositions comprise nonionic surfactant mixtures and prepolymer. Compositions of nonionic surfactant mixtures and prepolymers can be used advantageously in methods to preserve wood by impregnation of the wood with preservatives at ambient atmospheric pressures.
Claims18
A composition for preserving wood comprising:
- a prepolymer comprising from about 4 wt % to about 20 wt % of the total composition;
- and
- a nonionic surfactant mixture comprising alkylpolyglycosides and ethoxylated alcohols;
- wherein the pre-polymer has weight average molecular weight (MWw) in the range of from about 125 to about 400 such that the pre-polymer impregnates wood with pressures from about atmospheric to about 15 psig.
1 more element
A method of preserving wood comprising:
- (a) contacting a wood with a solution of a pre-polymer and nonionic surfactant;
- and
- (b) curing the wood that has been contacted with the solution of prepolymer and nonionic surfactant;
- wherein
- the method is conducted from about ambient atmospheric pressure to about 15 psig;
- the solution of prepolymer and nonionic surfactant comprises from about 2 wt % to about 20 wt % of prepolymer of the total weight of solution of the prepolymer and nonionic surfactant;
- and
- the curing step comprises heating the wood at temperatures above 25° C.
5 more elements
Dependencies are inferred from the claim text.