IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0525263
(2008-02-20)
|
등록번호 |
US-8304087
(2012-11-06)
|
우선권정보 |
CA-2578703 (2007-02-21) |
국제출원번호 |
PCT/CA2008/000321
(2008-02-20)
|
§371/§102 date |
20090730
(20090730)
|
국제공개번호 |
WO2008/101331
(2008-08-28)
|
발명자
/ 주소 |
- Perrier, Michel
- Labrecque, Jean-Francois
- Robitaille, Michel
- Gastonguay, Louis
|
출원인 / 주소 |
|
대리인 / 주소 |
Buchanan Ingersoll & Rooney
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
9 |
초록
▼
Process for treating wood consisting in injecting in cavities of the wood a solution of at least one fungicide and/or bactericide and/or insecticide and at least one monomer that can progressively form a polymer matrix in the cavities of the wood and then a gel in the cavities of the wood. The treat
Process for treating wood consisting in injecting in cavities of the wood a solution of at least one fungicide and/or bactericide and/or insecticide and at least one monomer that can progressively form a polymer matrix in the cavities of the wood and then a gel in the cavities of the wood. The treated woods thus obtained exhibit an improved lifetime.
대표청구항
▼
1. A process for treating a wooden article, comprising introducing a treating composition into at least one cavity of the wooden article, wherein the treating composition contains: at least one wood preserving agent selected from the group consisting of fungicides, bactericides and insecticides;at l
1. A process for treating a wooden article, comprising introducing a treating composition into at least one cavity of the wooden article, wherein the treating composition contains: at least one wood preserving agent selected from the group consisting of fungicides, bactericides and insecticides;at least one chelating agent that complexes at least one preserving agent;a polymer precursor that forms a polymer matrix after injection into the cavities;optionally a liquid support; andoptionally a surfactant;wherein at least one orifice is formed in the wooden article, into which the treating composition is introduced,wherein the process is performed curatively on a wooden article comprising at least one cavity, wherein said at least one orifice drilled into the wooden article connects the surface of the article to an inner cavity, and the treating composition is injected into the cavities via the orifice. 2. The process according to claim 1, wherein the content of preserving agent in the treating composition is of 0.1% to the saturation concentration by weight. 3. The process according to claim 1, wherein the content of preserving agent is lower than 10% by weight. 4. The process according to claim 1, wherein the treating composition has a viscosity of less than 100 Pas at 20° C. prior to introduction into the article to be treated. 5. The process according to claim 1, wherein the treating composition is injected into the wooden article at a pressure below 10atm. 6. The process according to claim 5, wherein the pressure is between 1 and 2 atm. 7. The process according to claim 1, wherein the injection is performed under pressure. 8. The process according to claim 1, wherein the preserving agent is a fungicide. 9. The process according to claim 8, wherein the fungicide is selected from the group consisting of boron compounds, phosphates, silicates, copper sulfate and sodium fluoride. 10. The process according to claim 9, wherein the fungicide is selected from the group consisting of boric acid, borax and sodium octaborate. 11. The process according to claim 1, wherein the treating composition contains at least two fungicides. 12. The process according to claim 10, wherein the fungicide content of the treating composition is at least 0.015 M. 13. The process according to claim 1, wherein the preserving agent is a bactericide. 14. The process according to claim 13, wherein the bactericide is selected from the group consisting of copper sulfate and sodium perborate. 15. The process according to claim 1, wherein the preserving agent is an insecticide. 16. The process according to claim 15, wherein the insecticide is selected from the group consisting of boric acid, borax and sodium octaborate. 17. The process according to claim 1, wherein the chelating agent represents at least a compound comprising hydroxyl and/or amine and/or carboxylic acid functions. 18. The process according to claim 17, wherein the chelating agent is selected from the group consisting of polyamines, polyols and polyolamines. 19. The process according to claim 17, wherein the chelating agent is a compound that has a nitrogen atom and vicinal hydroxyl functions, capable of chelating boron or copper compounds. 20. The process according to claim 17, wherein the chelating agent is selected from the group consisting of n-methyl-D-glucamine (NMG), tris(hydroxymethyl)aminomethane (THAM), 1,3-bis[tris(hydroxymethyl)- methylamino]propane, (hydroxyethyl)amine, di(hydroxyethyl)amine, and iminodicarboxylic acids. 21. The process according to claim 1, wherein the preserving agent is a copper compound and the chelating agent is ethylenediaminetetraacetic acid (EDTA). 22. The process according to claim 1, wherein the polymer precursors are selected from the group consisting of acrylic acid, ethers, glycols, acrylamides, vinylpyrrolidone, vinyl alcohol, acrylates and organohalosilanes. 23. The process according to claim 1, wherein the treating composition contains two different precursors that react to form a polymer matrix. 24. The process according to claim 23, wherein the treating composition is prepared by first mixing one of the precursors, referred to as precursor 1, with at least one preserving agent, and then adding the second precursor (referred to as precursor 2) and at least one chelating agent, precursor 1 being chosen such that it contains functions that allow it to graft the chelating agent, and then to react with precursor 2. 25. The process according to claim 24, wherein the ratio of the reactive functions of precursor 1relative to the reactive functions of precursor 2 corresponds substantially to the stoichiometry. 26. The process according to claim 24, wherein the total content of the three compounds (chelating agent, precursor 1 and precursor 2) in a treating composition containing a liquid support is comprised between 0.1 and 95% by weight. 27. The process according to claim 26, wherein the total content of the three compounds is comprised between 5 and 70% by weight. 28. The process according to claim 24, wherein the precursors are precursors of a polymer of the polyepoxy type. 29. The process according to claim 28, wherein the precursor 1 is a compound having at least two glycidyl ether groups and the precursor 2 is a compound having at least two groups capable of reacting with a glycidyl ether group. 30. The process according to claim 29, wherein the groups capable of reacting with a glydiyl ether group are selected from the group consisting of primary or secondary amine groups, OH groups and anhydride groups. 31. The process according to claim 28, wherein precursor 1 is a 5 polyethylene having a molecular mass of less than 1000 g/mol and a glycidyl ether group at each of its ends (PEDGE). 32. The process according to claim 29, wherein, in a first step, the diamine is mixed with a chelating agent, then immediately before the moment of injection of the treating composition, precursor 1 and the preserving agent are added. 33. The process according to claim 29, wherein the proportions of the polymer precursors are such that the number of glycidyl ether functions in precursor 1 are equivalent to the number of amine hydrogen atoms in precursor 2 and in the chelating agent. 34. The process according to claim 1, wherein the chelating agent/preserving agent mole ratio is 2, and the preserving agent is a boron 20 compound. 35. The process according to claim 1, wherein the precursor is chosen from those that polymerize in the presence of a thermal or photochemical initiator, the composition comprising a polymerization initiator and the process comprising an additional step consisting in heating or irradiating the treating composition after injection. 36. The process according to claim 35, wherein the precursor is a compound bearing vinyl groups, selected from the groups consisting of acrylic derivatives and monomers bearing epoxy groups or siloxane groups. 37. The process according to claim 36, wherein the precursor is a glycidyl methacrylate. 38. The process according to claim 1, wherein the liquid support of the treating composition is substantially formed of water or an environment friendly organic solvent or a mixture thereof. 39. The process according to claim 38, wherein the organic solvent is selected from the group consisting of alcohols and ketones. 40. A wooden article treated by a process according to claim 1, wherein it has at least one cavity impregnated with a gel formed of a polymer matrix and the liquid support and containing one or more chelating agents and one or more preserving agents, wherein the gel formed in the cavity has the following characteristics: a water solubility at room temperature of at least 10%;a content of fungicidal agent corresponding to a concentration that is between 0.1% and 10% by weight of the solution;rheological characteristics of the gel such that a standard rheological measurement demonstrates that, in the region of the working temperature, the storage modulus (G′) is greater than the loss modulus (G″); anda swelling power in the presence of water that is, when measured according to the weighing method, at least greater than 5% of the weight of polymer formed. 41. The wooden article according to claim 40, wherein the gel formed in the cavity has a water solubility at room temperature of at least 95%.
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