Water-in-oil micro-emulsion compositions and use of same for minimizing changes in cellulosic materials

Patent metadata

Field	Value
Publication number	US-9499741-B1
Application number	US-201313799935-A
Country	US
Kind code	B1
Filing date	Mar 13, 2013
Priority date	Mar 13, 2013
Publication date	Nov 22, 2016
Grant date	Nov 22, 2016

Abstract

This invention describes a treatment for wood and other cellulosic materials for minimizing the net dimensional change in the wood and/or cellulosic material between cycles of shrinking and swelling. Cycles of shrinking and swelling compromise the integrity of cellulosic materials, including wood. The water-in-oil composition disclosed herein can be used as a treatment to reduce the magnitude of the dimensional change, thereby mitigating stress and reduce cracking.

First claim

I claim:

1. A composition comprising an emulsion having oil as the continuous phase and having water as the dispersed phase, wherein said emulsion further contains a first surfactant, and wherein the average particle size of the dispersed phase is less than about 100 nanometers.

2. The composition of claim 1 , wherein said first surfactant functions as an emulsifier.

3. The composition of claim 1 , comprising
10% to 30% water by weight of total composition;
15% to 45% first surfactant by weight of total composition;
25% to 75% oil by weight of total composition.

4. The composition of claim 2 , wherein the emulsifier includes R, R′, R″, and R′″ groups comprising the structure:

wherein R, R′, R″, and R′″ are selected from the group consisting of hydrogen, saturated hydrocarbon, unsaturated hydrocarbon, cycloaliphatic hydrocarbon, aromatic hydrocarbon, benzylic hydrocarbon,
and wherein a total chain length of the R, R′, R″, and R′″ groups is less than 27.

5. The composition of claim 2 , wherein the emulsifier includes R, R′, R″, and R′″ groups comprising the structure

wherein R, R′, R″, and R′″ are selected from the group consisting of hydrogen, saturated hydrocarbon, unsaturated hydrocarbon, cycloaliphatic hydrocarbon, aromatic hydrocarbon, benzylic hydrocarbon,
and wherein a total chain length of the R, R′, R″, and R′″ groups is less than 27.

6. The composition of claim 2 , wherein the emulsifier includes R, R′, R″, and R′″ groups comprising the structure

wherein R, R′, R″, and R′″ are selected from the group consisting of hydrogen, saturated hydrocarbon, unsaturated hydrocarbon, cycloaliphatic hydrocarbon, aromatic hydrocarbon, benzylic hydrocarbon,
and wherein a total chain length of the R, R′, R″, and R′″ groups is less than 27.

7. The composition of claim 2 , wherein the emulsifier includes R, R′, R″, R′″, R″″, R′″″ groups comprising the structure

wherein R, R′, R″, R′″, R″″, R′″″ are selected from the group consisting of hydrogen, saturated hydrocarbon, unsaturated hydrocarbon, cycloaliphatic hydrocarbon, aromatic hydrocarbon, benzylic hydrocarbon,
wherein x=2 to 6, and y=1 to 4; and
wherein a total chain length of the R, R′, R″, R′″, R″″, R′″″ groups is less than 27.

8. The composition of claim 2 , wherein the emulsifier includes R, R′, and R″ groups comprising the structure

wherein R, R′, and R″ are selected from the group consisting of hydrogen, saturated hydrocarbon, unsaturated hydrocarbon, cycloaliphatic hydrocarbon, aromatic hydrocarbon, benzylic hydrocarbon,
wherein X=hydrogen, carboxylate, or alkylcarboxylate,
wherein Z=0 to 12;
and wherein a total chain length of the R, R′, R″ groups is less than 27.

9. The composition of claim 3 , wherein the first surfactant is a blend of surfactants.

10. The composition of claim 1 , comprising:
10% to 30% water by weight of total composition;
15% to 45% first surfactant by weight of total composition;
25% to 75% oil and one or more additive by weight of total composition.

11. The composition of claim 10 , wherein the additive includes a surfactant selected from the group consisting of decyl alcohol, linseed oil fatty acid, octanoic acid, sorbitan monooleate, and propylene glycol monooleate.

12. A composition comprising an emulsion having a continuous oil phase and having an aqueous dispersed phase, wherein said emulsion further contains a first surfactant that functions as an emulsifier, and wherein the average particle size of the dispersed phase is less than about 100 nanometers.

13. The composition of claim 12 , wherein the aqueous dispersed phase includes water.

14. The composition of claim 13 , comprising
10% to 30% water by weight of total composition;
15% to 45% of the first surfactant by weight of total composition; and
25% to 75% oil and one or more additive, by weight of total composition.

15. The composition of claim 14 , wherein said additive includes a second surfactant.

16. The composition of claim 14 , wherein the oil is mineral oil.

17. A method for the treatment of cellulosic material, wherein said method comprises treating the cellulosic material with a composition, wherein said composition includes an emulsion having oil as the continuous phase and having water as the dispersed phase, and wherein said emulsion further includes an emulsifier, and wherein the average particle size of the dispersed phase is less than about 100 nanometers.

18. The method of claim 17 , wherein said cellulosic material is wood.

19. The method of claim 18 , wherein said composition further includes a surfactant.

20. The method of claim 17 , wherein
the continuous phase is 25% to 75% by weight of total composition;
the dispersed phase 10% to 30% water, by weight of total composition; and
the emulsifier is 15% to 45% by weight of total composition.

Assignees

• Sherwin Williams Co

Inventors

• Rinz James E

Classifications

• B27K3/36

  Aliphatic compounds · CPC title

• C08L33/04

  Homopolymers or copolymers of esters {(C08L43/04 takes precedence)} · CPC title

• C08L33/02

  Homopolymers or copolymers of acids; Metal or ammonium salts thereof · CPC title

• C08L79/02

  Polyamines · CPC title

• C08L91/00

  Compositions of oils, fats or waxes; Compositions of derivatives thereof · CPC title