# US 2014/0154419 A1 · Preservation of wood, compositions and methods thereof

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- Number: US 2014/0154419 A1
- Document ID: US20140154419A1
- Status: Published application
- Kind: A1
- Application number: 14/176,339
- Filed: 2014-02-10
- Published: 2014-06-05
- Earliest claimed: 2008-12-31
- Assignees: Apinee, Inc.
- Applicants: Apinee, Inc.
- Inventors: Joseph L. Stark
- Web page: https://patentgrep.com/patent/US20140154419A1

## CPC

- B27K 3/08: Impregnating by pressure {, e.g. vacuum impregnation}
- A01N 25/30: characterised by the surfactants
- B27K 3/15: Impregnating involving polymerisation {including use of polymer-containing impregnating agents (macromolecular compounds derived from lignocellulosic materials C08H; compositions of lignin-containing materials C08L97/02)}
- B27K 3/343: {Heterocyclic compounds}
- B27K: PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR (applying liquids or other fluent materials to surfaces in general B05; coating wood or similar material B44D); CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- A01N: PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF (preservation of food or foodstuff A23); BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES (preparations for medical, dental or toiletry purposes which kill or prevent the growth or proliferation of unwanted organisms A61K); PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS

## 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.

## Claims

### Claim 1

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.

### Claim 2 (depends on 1)

The composition of claim 1 wherein the pre-polymer comprises a phenol-formaldehyde prepolymer.

### Claim 3 (depends on 1)

The composition of claim 1 wherein the nonionic surfactant mixture comprises monodecyl ether derivatives of linear alkoxylates and C12-C15 ethoxylated alcohols.

### Claim 4 (depends on 1)

The composition of claim 1 wherein the pre-polymer comprises a water soluble prepolymer in aqueous base.

### Claim 5 (depends on 1)

The composition of claim 1 wherein the pre-polymer has weight average molecular weight (MWw) in the range of from about 125 to about 300 such that the pre-polymer impregnates the wood with pressures from about atmospheric to about 10 psig.

### Claim 6 (depends on 1)

The composition of claim 1 wherein the pre-polymer has weight average molecular weight (MWw) in the range of from about 125 to about 200 such that the pre-polymer impregnates the wood with pressures from about atmospheric to about 5 psig.

### Claim 7 (depends on 1)

The composition of claim 1 wherein the pre-polymer has weight average molecular weight (MWw) in the range of from about 125 to about 140 such that the pre-polymer impregnates the wood with pressures from about atmospheric to about 1 psig.

### Claim 8 (depends on 1)

The composition of claim 1 wherein the pre-polymer comprises from about 5 wt % to about 10 wt % of the composition.

### Claim 9

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.

### Claim 10 (depends on 9)

The method of claim 9 wherein the curing step comprises heating the wood at temperatures above 35° C.

### Claim 11 (depends on 9)

The method of claim 9 wherein the solution of pre-polymer comprises an aqueous solution of phenol-formaldehyde prepolymer; wherein
the weight average molecular weight (MWw) of the phenol-formaldehyde prepolymer is in the range of from about 125 to about 400.

### Claim 12 (depends on 9)

The method of claim 9 wherein the nonionic surfactant comprises alkylpolyglycosides and ethoxylated alcohols.

### Claim 13 (depends on 9)

The method of claim 9 wherein the pre-polymer is a water soluble pre-polymer in aqueous base.

### Claim 14 (depends on 9)

The method of claim 9 wherein the method is conducted from about atmospheric pressure to about 10 psig.

### Claim 15 (depends on 9)

The method of claim 9 wherein the method is conducted from about atmospheric pressure to about 5 psig.

### Claim 16 (depends on 9)

The method of claim 9 wherein the method is conducted from about atmospheric pressure to about 1 psig.

### Claim 17 (depends on 9)

The method of claim 9 wherein the solution of pre-polymer and nonionic surfactant comprises in the range from 5 wt % to 10 wt % of prepolymer.

### Claim 18 (depends on 9)

The method of claim 9 wherein the solution of pre-polymer and nonionic surfactant comprises in the range from 6 wt % to 8 wt % of prepolymer.