Method for measuring the degree of penetration into wood or wood-based materials

Abstract

In one aspect, a method is provided that can accurately evaluate the degree of penetration of a wood preservative containing a quaternary ammonium compound into wood or wood-based materials that have been treated with the preservative. [Solution] In one aspect, the present disclosure relates to a method for measuring the degree of penetration of a quaternary ammonium compound-containing agent into wood or wood-based materials, the method comprising contacting wood or wood-based materials treated with the agent with a coloring solution containing tetrabromophenolphthalein ethyl ester (TBPE) or eosin Y as an active ingredient to cause a coloring reaction.

Description

[Technical Field]

[0001] The present disclosure relates to a method for measuring the degree of penetration of a quaternary ammonium compound into wood or wood-based materials, a color developing solution used in the measurement, and a kit for wood preservation or termite prevention. [Background technology]

[0002] Lumber (sawn lumber) that has been cut and processed to size may be treated with a wood preservative to impart insect, rot, and / or termite resistance. Treatment with a wood preservative is usually carried out by pressurizing the wood preservative in a factory, but in some cases, further treatment by painting, spraying, immersion, etc. of the wood preservative may be carried out at the construction site, etc.

[0003] Preservation treatment is one indicator of lumber quality. For this reason, it has been proposed to color the areas treated with the wood preservative by adding a water-soluble colorant to the wood preservative and carrying out the preservation treatment together with the wood preservative and anti-termite components, so that it is easy to determine whether the lumber has been treated (for example, Patent Document 1).

[0004] Meanwhile, the types of wood preservatives used in preservation treatments include those certified by the Japan Wood Preservation Association, a public interest incorporated association, and those specified in the Japanese Industrial Standard JIS K 1570. Furthermore, for the purpose of quality control of preservative-treated wood, confirmation that treatment with a certified or specified wood preservative complies with the standards must be confirmed using the test methods specified in the Japanese Agricultural and Forestry Standards for Lumber (JAS1083) or the test methods specified in the AQ certification administered by the Japan Housing and Wood Technology Center, a public interest incorporated foundation.

[0005] One of the verification tests for preservative treatments specified in JAS1083 and AQ certification is the penetration test, which involves taking a test piece from the preservative-treated wood (lumber) and checking the color development after applying or spraying a coloring liquid to it. The color indicator used in the penetration test is determined by the type of wood preservative used. For example, bromophenol blue (BPB) should be used for wood treated with a quaternary ammonium wood preservative (didecyldimethylammonium chloride, AAC), a quaternary ammonium / non-ester pyrethroid wood preservative (N,N-didecyl-N-methyl-poly(oxyethyl)ammonium propionate / silafluofen, SAAC), a boron / quaternary ammonium wood preservative (boron / didecyldimethylammonium chloride, BAAC), and an azole / quaternary ammonium / neonicotinoid wood preservative (tebuconazole / didecyldimethylammonium chloride / imidacloprid, AZNA). [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2005-35288 Summary of the Invention [Problem to be solved by the invention]

[0007] As mentioned above, JAS1083 and AQ certification stipulate that if wood is treated with a wood preservative containing a quaternary ammonium compound, such as a quaternary ammonium compound wood preservative (AAC) or a quaternary ammonium non-ester pyrethroid wood preservative (SAAC), the degree of penetration must be confirmed by a penetration test using BPB.

[0008] However, the present inventors have discovered a problem in that sufficient color development cannot be achieved with BPB. Specifically, when a quaternary ammonium-organic iodide-azole-neonicotinoid compound wood preservative (AICI) is used as a wood preservative for preservation treatment, for example, a quaternary ammonium compound is incorporated into the wood preservative and a sufficient amount of wood preservative (quaternary ammonium compound) is injected into the wood to impart insect repellent, preservative, and termite resistance. However, this often results in insufficient color development in penetration tests using BPB. For this reason, to achieve sufficient color development, a color-developing component (e.g., an amino acid) that exhibits the same penetration behavior as the wood preservative component (e.g., termite-repellent or preservative) is added to the working solution separately from the wood preservative, and the penetration is measured by color development with ninhydrin.

[0009] However, the current method requires a separate additive, which places a heavy burden on the injection site, such as the need to procure it, manage its inventory, and perform the addition work. Therefore, a new method is needed that can more accurately evaluate the penetration of wood preservatives containing quaternary ammonium compounds into wood.

[0010] In one aspect, the present disclosure provides a method capable of accurately assessing the degree of penetration of a wood preservative containing a quaternary ammonium compound into wood or wood-based materials that have been treated with the preservative. [Means for solving the problem]

[0011] In one aspect, the present disclosure provides a method for measuring the degree of penetration of a quaternary ammonium compound-containing agent into wood or a wood-based material, the method comprising: Tetrabromophenolphthalein ethyl ester (TBPE) and causing a color reaction by contacting a color-developing solution containing the above as an active ingredient.

[0012] In another aspect, the present disclosure provides a coloring solution used in measuring the degree of penetration of wood or wood-based materials, the measurement of the degree of penetration being a measurement of the degree of penetration of a quaternary ammonium compound-containing agent into wood or wood-based materials, and the coloring solution contains, as an active ingredient: TBPE The present invention relates to a color developing solution containing

[0013] In yet another aspect, the present disclosure provides a kit for measuring the degree of penetration of wood or wood-based materials, wherein the measurement of the degree of penetration is a measurement of the degree of penetration of a quaternary ammonium compound-containing agent into wood or wood-based materials, TBPE and an instruction manual describing a method for testing the wettability of wood or wood-based materials.

[0014] In yet another aspect, the present disclosure provides a kit for preserving wood or woody materials, comprising: a wood preservative containing a quaternary ammonium compound as an active ingredient; and a measuring device for measuring the degree of penetration of the wood preservative into wood or woody materials. TBPE and a color developing solution containing the above as an active ingredient. [Effects of the Invention]

[0015] According to one aspect of the present disclosure, a method can be provided that can accurately evaluate the degree of penetration of a wood preservative containing a quaternary ammonium compound into wood or wood-based materials that have been treated with the preservative. [Brief explanation of the drawings]

[0016] [Figure 1] FIG. 1 shows an example of the results of color confirmation test 1. [Figure 2] FIG. 2 shows an example of the results of color confirmation test 2. DETAILED DESCRIPTION OF THE INVENTION

[0017] The present disclosure is based on the finding that the use of a color developer containing tetrabromophenolphthalein ethyl ester (TBPE) or Eosin Y as an active ingredient enables more accurate evaluation of the penetration of wood (lumber) preserved with a wood preservative containing a quaternary ammonium compound than the use of BPB. Eosin Y is also known as Eosin Yellow, sodium tetrabromofluorescein, Acid Red-87, Pigment Red-90, Red No. 230-1, or 2',4',5',7'-tetrabromo-3',6'-bis(sodiooxy)spiro[isobenzofuran-1(3H),9'-[9H]xanthene]-3-one.

[0018] In this disclosure, "wood" refers to trees (logs) cut down from forests, woodlands, etc., particularly the trunks. In one or more embodiments, wood may include cut trees (logs) that have been processed into a certain shape (sawn lumber).

[0019] In this disclosure, the term "wood material" refers to wood that has been divided (or subdivided) into large and small components (elements) and then reconstructed (reformed). In one or more embodiments, examples of wood materials include vertically spliced ​​lumber, glued laminated lumber, LVL (laminated veneer lumber), PSL (parallel strand lumber), CLT (cross-laminated timber), plywood, particle board, OSB (oriented strand board), OSL (oriented strand lumber), and fiberboard.

[0020] In the present disclosure, "preservation treatment" refers to imparting at least one of insect repellent, rot-preventive, and termite-repellent properties to wood or wood materials, and preferably refers to imparting insect repellent properties, or rot-preventive and termite-repellent properties.

[0021] In the present disclosure, the term "wood preservative" refers to an agent for preserving wood or wood materials, and is an agent for imparting at least one of insect repellent, rot-preventive, and termite-repellent properties to wood or wood materials. In one or more embodiments, the wood preservative includes an insect repellent, rot-preventive, and / or termite-repellent agent for wood or wood materials.

[0022] In the present disclosure, a "quaternary ammonium compound-containing agent" refers to a wood preservative used for preserving wood or wood materials, i.e., to impart at least one of insect repellent, rot-preventive, and termite-repellent properties to wood or wood materials, and which contains a quaternary ammonium compound as an active ingredient. In one or more embodiments, the wood preservative in the present disclosure may further contain an active ingredient other than the quaternary ammonium compound.

[0023] [Infiltration degree measurement method] The present disclosure relates to a method for measuring the degree of penetration of a quaternary ammonium compound-containing agent into wood or wood-based materials, and the method of the present disclosure comprises contacting wood or wood-based materials treated with the agent with a coloring solution containing TBPE or eosin Y as an active ingredient to cause a coloring reaction.

[0024] In one or more embodiments, the color developing solution may further contain an organic solvent and / or water. In one or more embodiments, examples of the organic solvent include acetone, methyl ethyl ketone, methyl isobutyl ketone, methyl amyl ketone, cyclohexanone, methanol, ethanol, and acetonitrile. In one or more embodiments, the organic solvent may be one type or two or more types.

[0025] In one or more embodiments, the color developing solution may further contain an acid. In one or more embodiments, examples of the acid include citric acid, hydrochloric acid, acetic acid, malic acid, formic acid, phosphoric acid, sulfuric acid, and oxalic acid. In one or more embodiments, the acid may be one type or two or more types.

[0026] In one or more embodiments, the coloring solution can be prepared by dissolving TBPE or eosin Y in an organic solvent, and then adding and mixing water and / or an acid as appropriate thereto. In one or more embodiments, the coloring solution is a conventionally used BPB-containing coloring solution, for example, JAS1083, in which BPB is replaced with TBPE or eosin Y.

[0027] In one or more embodiments, the content of TBPE or eosin Y in the color development solution is 0.005% by mass to 30% by mass, or 0.01% by mass to 10% by mass. In one or more embodiments, the content of the organic solvent in the color developing solution is 10% by mass to 99.9% by mass, or 50% by mass to 99.9% by mass. In one or more embodiments, the content of the acid in the color developing solution is 0% by mass to 20% by mass, or 0% by mass to 10% by mass. In one or more embodiments, the content of water in the color developing solution is 0% by mass to 89% by mass, or 0% by mass to 49% by mass. In one or more embodiments, the color developing solution contains 0.005% by mass to 30% by mass of TBPE or eosin Y, 10% by mass to 99.9% by mass of an organic solvent, 0% by mass to 89% by mass of water, and 0% by mass to 20% by mass of an acid, and preferably contains 0.01% by mass to 10% by mass of TBPE or eosin Y, 50% by mass to 99.9% by mass of an organic solvent, 0% by mass to 49% by mass of water, and 0% by mass to 10% by mass of an acid.

[0028] In one or more embodiments, the measurement method of the present disclosure may include preparing a color development solution. In one or more embodiments, the measurement method of the present disclosure includes preparing a color development solution by mixing TBPE or eosin Y with an organic solvent, and, if necessary, adding water and / or an acid appropriately and mixing. In one or more embodiments, the measurement method of the present disclosure includes preparing a color development solution by mixing TBPE or eosin Y with an organic solvent to achieve the above-mentioned content, and, if necessary, adding water and / or an acid to achieve the above-mentioned content and mixing.

[0029] The measurement method of the present disclosure includes contacting wood or woody materials that have been preserved with a quaternary ammonium compound-containing agent with a color developing solution containing TBPE or eosin Y as an active ingredient. In one or more embodiments, the contact may be performed by application, spraying, dripping, or the like.

[0030] In one or more embodiments, the wood or wood material to be brought into contact with the coloring solution may be obtained by cutting wood that has been preserved with a chemical containing a quaternary ammonium compound to a predetermined size, or by using an increment bore to extract the wood or wood material.

[0031] In one or more embodiments, the measurement method of the present disclosure can measure the degree of infiltration even when the wood or wood material that has been preserved with a quaternary ammonium compound-containing agent is not contacted with an acid (e.g., an aqueous acetic acid solution) prior to contact with the color developing solution. In one or more embodiments, the measurement method of the present disclosure does not necessarily include contacting the wood or wood material that has been preserved with a quaternary ammonium compound-containing agent with an acid prior to contact with the color developing solution.

[0032] In one or more embodiments, the measurement method of the present disclosure includes confirming coloration by a color reaction. When a color reaction is caused by contact with a coloring solution containing TBPE as an active ingredient, in one or more embodiments, the infiltrated area can be colored blue. When a color reaction is caused by contact with a coloring solution containing eosin Y as an active ingredient, in one or more embodiments, the infiltrated area can be colored red.

[0033] In one or more embodiments, the measurement method of the present disclosure may include leaving the sample for a predetermined time after contacting the sample with the color-developing solution until the color change is confirmed by the color reaction. In one or more embodiments, the predetermined time may be longer than 0 minutes, 24 hours or more, or may be about 5 minutes, 15 minutes, or 30 minutes.

[0034] In one or more embodiments, the measurement method of the present disclosure may include confirming the coloration produced by the color reaction by visual inspection or image analysis. In one or more embodiments, the image analysis does not require special software and can be performed using various commonly used image analysis software.

[0035] In one or more embodiments, the measurement method of the present disclosure may include measuring the colored area and / or the non-colored area. In one or more embodiments, the measurement method of the present disclosure may include calculating the degree of infiltration from the obtained colored area and / or non-colored area. In one or more embodiments, the measurement of the colored area may be performed by manually measuring the length and calculating the area, or by using the functions of image analysis software as described above.

[0036] In one or more embodiments, the measurement method of the present disclosure is used to test the degree of penetration of a wood preservative containing a quaternary ammonium compound in lumber that has been treated with the preservative. In one or more embodiments, the measurement method of the present disclosure can be suitably used to test the degree of penetration of any wood preservative that contains a quaternary ammonium compound, and is preferably used to test the degree of penetration of wood preservatives containing the following quaternary ammonium compounds or lumber that has been treated with the following quaternary ammonium compound-containing agents.

[0037] In one or more embodiments, the quaternary ammonium compound may be a compound represented by the following general formula (I) from the viewpoint of its antiseptic and anti-termite effect on wood or wood-based materials. [ka] In formula (I), R 1 , R 2 , and R 3 are the same or different alkyl groups having 1 to 24 carbon atoms or alkenyl groups having 2 to 24 carbon atoms; R 4represents a polyoxyalkylene group having an average number of added moles of 1 to 20, an alkyl or alkenyl group having 6 to 24 carbon atoms, or an arylalkyl or arylalkenyl group having 7 to 24 carbon atoms; f represents an integer of 1 to 10; X f- is an f-valent organic acid ion.

[0038] In one or more embodiments, the alkyl group may be a methyl group, an ethyl group, a propyl group, a 2-ethylhexyl group, an octyl group, a lauryl group, a myristyl group, a cetyl group, or a stearyl group. In one or more embodiments, examples of the alkenyl group include an allyl group, a methallyl group, an octenyl group, a decenyl group, a dodecenyl group, a tetradecenyl group, a hexadecenyl group, and an oleyl group.

[0039] In general formula (I), R 1 , R 2 and R 3 In one or more embodiments, R is a linear or branched alkyl group having 1 to 18 carbon atoms, or a linear or branched alkenyl group having 2 to 18 carbon atoms. 1 , R 2 and R 3 may be the same or different in one or more embodiments.

[0040] R 4 is other than a polyoxyalkylene group having an average number of added moles of 1 to 20, in one or more embodiments, R 1 , R 2 and R 3 Among these, preferred combinations are those in which all of the groups have 1 to 2 carbon atoms, particularly methyl groups, and 1 and R 2 is a group having 1 to 2 carbon atoms, especially a methyl group, and R 3 is an alkyl group having 8 to 18 carbon atoms, particularly 10 to 16 carbon atoms. R 4 In one or more embodiments, when R is a polyoxyalkylene group having an average number of added moles of 1 to 20, 1 , R 2 and R 3The preferred combination of 1 is an alkyl group having 1 to 2 carbon atoms, especially a methyl group, and R 2 and R 3 is an alkyl group having 8 to 14 carbon atoms. R 4 In one or more embodiments, represents a polyoxyalkylene group having an average number of added moles of 1 to 20, a linear or branched alkyl or alkenyl group having 6 to 24 carbon atoms, or an arylalkyl or arylalkenyl group having 7 to 24 carbon atoms. In one or more embodiments, the polyoxyalkylene group may be a polyoxyethylene group or a polyoxypropylene group. In one or more embodiments, the alkyl group and alkenyl group having 6 to 24 carbon atoms may be the aforementioned alkyl group and alkenyl group having 6 to 24 carbon atoms. In one or more embodiments, examples of the arylalkyl group having 7 to 24 carbon atoms include phenylalkyl groups having an alkyl group having 1 to 6 carbon atoms, such as a benzyl group, a phenylethyl group, and a phenylbutyl group. In one or more embodiments, examples of the arylalkenyl group having 7 to 24 carbon atoms include a phenylethenyl group and a phenylpropenyl group. R 4 In one or more embodiments, R is preferably a polyoxyethylene group, an alkyl group, or an arylalkyl group having an average number of moles added of 1 to 20. 4 is other than a polyoxyalkylene group having an average number of added moles of 1 to 20, and R 1 ~R 3 If all have 1 to 2 carbon atoms, R 4 is more preferably an alkyl group having 10 to 24 carbon atoms, and R 1 and R 2 has 1 to 2 carbon atoms and R 3 When R is an alkyl group having 8 to 18 carbon atoms, 4 is preferably an alkyl group or arylalkyl group having 8 to 18 carbon atoms, and particularly preferably a benzyl group.

[0041] In one or more embodiments, the quaternary ammonium compound of formula (I) may be the following, preferably the following (3) or (4), more preferably the following (4). (1)R 1 ~R 3 All have 1 to 2 carbon atoms, and R 4 is an alkyl group having 10 to 24 carbon atoms. Trimethyldodecylammonium, trimethyltetradecylammonium, trimethylhexadecylammonium, trimethyloctadecylammonium, trimethylcocoalkylammonium, trimethyl-2-ethylhexylammonium, dimethylethyldodecylammonium, dimethylethyltetradecylammonium, dimethylethylhexadecylammonium, dimethylethyloctadecylammonium, dimethylethylcocoalkylammonium, methyldiethyldodecylammonium, methyldiethyltetradecylammonium, methyldiethylhexadecylammonium, methyldiethyloctadecylammonium, methyldiethylcocoalkylammonium, and methyldiethyl-2-ethylhexylammonium cations. (2)R 1 and R 2 is an alkyl group having 1 to 2 carbon atoms, R 3 is an alkyl group having 8 to 18 carbon atoms, R 4 is a benzyl group. Dimethyldecylbenzylammonium, dimethyldodecylbenzylammonium, dimethyltetradecylbenzylammonium, dimethylhexadecylbenzylammonium and dimethylcocoalkylbenzylammonium cations. (3)R 1 and R 2 is an alkyl group having 1 to 2 carbon atoms, R 3 and R 4 is an alkyl group having 8 to 18 carbon atoms. Dimethyldioctylammonium, dimethyloctyldecylammonium, dimethyldidecylammonium, dimethyldecyldodecylammonium, dimethyldidodecylammonium, dimethylditetradecylammonium, methylethyldidecylammonium and diethyldidecylammonium cations. (4)R 1 is an alkyl group having 1 to 2 carbon atoms, R 2 and R 3 is an alkyl group having 8 to 14 carbon atoms, R 4 is a polyoxyethylene group. N,N-didecyl-N-methyl-poly(oxyethyl)ammonium, N,N-didodecyl-N-methyl-poly(oxyethyl)ammonium, N,N-ditetradecyl-N-methyl-poly(oxyethyl)ammonium. In one or more embodiments, the average number of moles of polyoxyethylene added is 1 to 20, 1 to 10, or 1 to 5.

[0042] In one or more embodiments, the quaternary ammonium compound may be an organic acid salt of a quaternary ammonium. In one or more embodiments, examples of the organic acid salt include oxalic acid, citric acid, malic acid, maleic acid, itaconic acid, tartaric acid, glutaric acid, adipic acid, pimelic acid, succinic acid, malonic acid, fumaric acid, phthalic acid, isophthalic acid, terephthalic acid, sebacic acid, azelaic acid, formic acid, acetic acid, propionic acid, butyric acid, valeric acid, 2-methylbutyric acid, n-hexanoic acid, 3,3-dimethylbutyric acid, 2-ethylbutyric acid, 4-methylpentanoic acid, n-heptanoic acid, 2-methylhexanoic acid, 2-ethylhexanoic acid, n-octanoic acid, nonanoic acid, dodecanoic acid, tetradecanoic acid, stearic acid, oleic acid, benzoic acid, ethylbenzoic acid, cinnamic acid, t-butylbenzoic acid, glycolic acid, butanetetracarboxylic acid, trimellitic acid, pyromellitic acid, salicylic acid, glyceric acid, and lactic acid. In one or more embodiments, the quaternary ammonium compound may be a carbonate or bicarbonate of quaternary ammonium.

[0043] In one or more embodiments, the quaternary ammonium compound-containing agent may further comprise 3-iodo-2-propynyl-n-butylcarbamate (IPBC), α-(4-chlorophenyl)-α-(1-cyclopropyl-ethyl)-1H-1,2,4-triazole-1-ethanol (cyproconazole), and / or 1-[(6-chloro-3-pyridinyl)-methyl]-4,5-dihydro-N-nitro-1H-imidazol-2-amine (imidacloprid), among others, and may further comprise one or more, two or more, or all three.

[0044] In one or more embodiments, the quaternary ammonium compound-containing agent may include N,N-didecyl-N-methyl-poly(oxyethyl)ammonium propionate (DMPAP), IPBC, cyproconazole, and imidacloprid.

[0045] In one or more embodiments, the quaternary ammonium compound-containing agent of the present disclosure may be a wood preservative containing a quaternary ammonium compound certified by the Japan Wood Preservation Association, or a wood preservative containing a quaternary ammonium compound specified in JIS K1570. In one or more embodiments, the quaternary ammonium compound-containing agent may be a quaternary ammonium compound-based wood preservative (drug name: didecyldimethylammonium chloride, AAC), a boron-quaternary ammonium compound-based wood preservative (drug name: boron-didecyldimethylammonium chloride, BAAC), or a quaternary ammonium-non-ester pyrethroid compound-based wood preservative (drug name: N,N-didecyl-N-methyl-poly(oxyethyl)ammonium propionate-chloride, BAAC). Examples include tetrafluoroethylene (SAAC), azole-quaternary ammonium-neonicotinoid compound wood preservatives (tebuconazole-didecyldimethylammonium chloride-imidacloprid, AZNA), and quaternary ammonium-organic iodide-azole-neonicotinoid compound wood preservatives (N,N-didecyl-N-methyl-poly(oxyethyl)ammonium propionate-IPBC-cyproconazole-imidacloprid, AICI).

[0046] [Coloring liquid] In another aspect, the present disclosure relates to a coloring solution used for measuring the degree of infiltration of wood or wood-based materials. The coloring solution of the present disclosure is used for measuring the degree of infiltration of a quaternary ammonium compound-containing agent into wood or wood-based materials, and contains TBPE or eosin Y as an active ingredient. In one or more embodiments, the coloring solution of the present disclosure can be used in the measurement method of the present disclosure.

[0047] In one or more embodiments, the color-developing solution of the present disclosure may further contain an organic solvent, water, and / or an acid. The types of organic solvents and acids, as well as their contents, are as described above.

[0048] [Kit for measuring the degree of infiltration of wood or wood-based materials] In yet another aspect, the present disclosure relates to a kit for measuring the degree of infiltration of wood and / or wood-based materials. The kit of the present disclosure is a kit used to measure the degree of infiltration of a quaternary ammonium compound-containing agent into wood and / or wood-based materials, and contains TBPE or eosin Y and an instruction manual describing a method for testing the degree of infiltration of wood and / or wood-based materials. In one or more embodiments, the kit of the present disclosure can be used in the measurement method of the present disclosure. In one or more embodiments, the kit of the present disclosure allows for the easy preparation of a coloring solution used in the infiltration test of wood or wood-based materials, and can facilitate the infiltration test of wood or wood-based materials.

[0049] In one or more embodiments, the kit of the present disclosure may further contain an organic solvent and / or an acid. In one or more embodiments, the TBPE or eosin Y, the organic solvent, and the acid may be stored in separate containers or may be stored in a mixed state in the same container.

[0050] [Kit for preventing decay or termites for wood or wood-based materials] In yet another aspect, the present disclosure provides a kit for preserving wood or woody materials, comprising a wood preservative containing a quaternary ammonium compound as an active ingredient and a coloring solution containing TBPE or eosin Y as an active ingredient for measuring the penetration of the wood preservative into wood or woody materials. In one or more embodiments, the coloring solution in the kit of this aspect may be the coloring solution of the present disclosure. In one or more embodiments, the wood preservative in the kit of this aspect may be the above-mentioned quaternary ammonium compound-containing agent, etc.

[0051] In one or more embodiments, the kit of the present disclosure may further contain instructions describing a method for injecting the wood preservative and / or a method for testing the infiltration of wood or wood-based materials.

[0052] In yet another aspect, the present disclosure provides a kit for preserving wood or wood-based materials, which contains a wood preservative containing a quaternary ammonium compound as an active ingredient and TBPE or Eosin Y. In one or more embodiments, the kit of this aspect may further contain an organic solvent and / or an acid. In one or more embodiments, the TBPE or Eosin Y, the organic solvent, and the acid may be stored in separate containers, or may be stored in a mixed state in the same container. In one or more embodiments, the kit of this aspect may further contain instructions describing a method for injecting the wood preservative and / or a method for testing the infiltration of wood or wood-based materials.

[0053] The present disclosure further relates to one or more of the following embodiments. [1] A method for measuring the degree of penetration of a quaternary ammonium compound-containing agent into wood or wood-based materials, comprising: A method comprising contacting the wood or wood material treated with the agent with a coloring solution containing TBPE or eosin Y as an active ingredient to cause a coloring reaction. [2] The method according to [1], wherein the agent containing a quaternary ammonium compound is a wood preservative containing a quaternary ammonium compound. [3] A coloring solution used to measure the degree of penetration of wood or wood-based materials, The infiltration measurement is a measurement of the infiltration degree of a quaternary ammonium compound-containing agent into wood or a wood-based material, The coloring solution contains TBPE or eosin Y as an active ingredient. [4] A kit for measuring the degree of infiltration of wood or wood-based materials, The infiltration measurement is a measurement of the infiltration degree of a quaternary ammonium compound-containing agent into wood or a wood-based material, TBPE or Eosin Y, and an instruction manual describing a method for testing the permeability of wood or wood-based materials. [5] A kit for preserving wood or wood-based materials, comprising: a wood preservative containing a quaternary ammonium compound as an active ingredient; and a coloring solution containing TBPE or eosin Y as an active ingredient for measuring the degree of penetration of the wood preservative into wood or wood-based materials. [Example]

[0054] [Color confirmation test 1] 1. Preparation of color solution TBPE coloring solution (Example) 100 mg of TBPE was dissolved in 100 mL of acetone, and 2.5 g of a 10% aqueous citric acid solution was added thereto and mixed to prepare a TBPE coloring solution. Eosin Y staining solution ( reference example) Eosin Y color solution was prepared by dissolving 250 mg of eosin Y in 80 mL of acetone, adding 5 g of 1 M hydrochloric acid solution and 15 g of water, and mixing. ·BPB coloring liquid (comparative example) Bromophenol blue (BPB) 0.2 g was dissolved in acetone to prepare 100 mL of BPB coloring solution. 2. Preparation of Test Materials The test tree species used were cedar and cypress lumber with dimensions of 75mm x 75mm x 800mm that had been incised (a process in which fine grooves are carved into the surface of the wood to allow for uniform infusion of chemicals). The chemical solution used was Miracle Laurel AZ (manufactured by Katayama Chemical Industry Research Institute Co., Ltd.), diluted 55 times with water. Miracle Laurel AZ contains 14% DMPAP [N,N-didecyl-N-methyl-poly(oxyethyl)ammonium propionate]. Therefore, the concentration of DMPAP, a quaternary ammonium compound, in the 55-times diluted solution was approximately 0.25%. After injecting the solution under pressure, the specimen was cured and dried at room temperature for approximately two months to obtain test specimens. Three cross sections were cut from the center of the specimen to obtain test specimens. The test specimens were cut to a length of 5 mm or more in accordance with the JAS standard (JAS1083). 3. Coloring method TBPE coloring solution and Eosin Y coloring solution were dropped onto the test material, and color development was confirmed after about 15 minutes. The coloring using BPB coloring solution conformed to the JAS standard (JAS1083). In other words, 18 g of acetic acid was added to water to make 100 mL, which was then dropped onto the test material and left for about 3 minutes. Then, BPB coloring solution was added dropwise, and the coloring was confirmed after about 5 minutes. The test material used in the tests using TBPE coloring solution, eosin Y coloring solution, and BPB coloring solution was a single piece of wood (from the same lot) that had been injected with the chemical solution all at once and then cut into pieces. 4. Measurement of the degree of infiltration After the coloring was completed, the colored surfaces were immediately photographed with a camera and converted into image data. Using image analysis software, the number of pixels in the colored and non-colored areas of each colored surface was counted, and the degree of infiltration was calculated using the following formula.

number

[0055] [Color confirmation test 2] 1. Preparation of Test Materials A 40mm cube of cedar wood was prepared as the test material, and both end grain surfaces were covered with silicone sealant to prevent excessive penetration of the chemical solution from the end grain. The chemical solutions used were Miracle Laurel AZ, DDAC (didecyldimethylammonium chloride), and BKC (benzalkonium chloride), which contain three quaternary ammonium compounds. The chemical solutions used were diluted with water to a concentration of 0.25%. DDAC and BKC are classified as quaternary ammonium compound wood preservatives. After pressure injection, the chemical solution was cured and dried at room temperature for 10 days to obtain test pieces. The center of each test piece was cut to obtain test pieces. Test pieces were cut to a length of 5 mm or more in accordance with JAS standards (JAS1083). 2. Measuring the amount of chemical solution injected The weight of the test material was measured before and after pressure injection of the chemical solution (a chemical containing a quaternary ammonium compound), and the weight of the chemical solution that had infiltrated into the test material (amount of chemical solution injected) was calculated from the weight difference. It is known that there is a roughly positive correlation between the amount of chemical solution injected and the area of ​​chemical solution infiltration, and when the injection amount was approximately 800 kg / m 3 This means that the chemical solution will penetrate almost the entire surface. 3. Coloring method TBPE coloring solution and Eosin Y coloring solution were dropped onto the test material, and color development was confirmed after about 15 minutes. The coloring using BPB coloring solution conformed to the JAS standard (JAS1083). In other words, 18 g of acetic acid was added to water to make 100 mL, which was then dropped onto the test material and left for about 3 minutes. Then, BPB coloring solution was added dropwise, and the coloring was confirmed after about 5 minutes. The degree of infiltration was calculated in the same manner as in Color Confirmation Test 1. 4.Results Figure 2 shows images showing the coloration results of the cedar and cypress injection materials using each coloration method, as well as the degree of infiltration and the amount of chemical solution injected. As shown in Figure 2, the TBPE coloring solution was not stained with any of the test materials that were injected with various quaternary ammonium compound-containing agents. in The TBPE coloring solution showed good color development, and was better than the BPB coloring solution used as a comparison example. to As a result, excellent color development was observed even with quaternary ammonium compound-containing drugs other than Miracle Laurel AZ (DMPAP). As shown in FIG. 2, the TBPE coloring solution of the example of When using this test material, a correlation was observed between the amount of chemical solution injected and the degree of infiltration in all test materials injected with quaternary ammonium compounds, indicating that the infiltration of quaternary ammonium compounds was accurately evaluated. On the other hand, when using the comparative BPB coloring solution, no correlation was observed between the amount of chemical solution injected and the degree of infiltration, and a lower degree of infiltration was observed compared to the amount of solution injected. In particular, the BKC-infused test material showed a significantly lower degree of infiltration compared to the amount of chemical solution injected. From the above results, the TBPE coloring solution of By using this solution, the degree of penetration of drugs containing quaternary ammonium compounds can be evaluated more accurately than with the BPB coloring solution.

Claims

1. A method for measuring the degree of penetration of a quaternary ammonium compound-containing agent into wood or wood-based materials, comprising: The method comprises contacting the wood or wood material treated with the agent with a coloring solution containing tetrabromophenolphthalein ethyl ester (TBPE) as an active ingredient to cause a coloring reaction.

2. 2. The method of claim 1, wherein the quaternary ammonium compound-containing agent is a wood preservative containing a quaternary ammonium compound.

3. A method according to claim 1 or 2, wherein the TBPE content in the coloring solution is 0.005% by mass to 10% by mass.

4. A coloring solution for use in measuring the degree of infiltration of wood or wood-based materials, The infiltration measurement is a measurement of the infiltration degree of a quaternary ammonium compound-containing agent into wood or a wood-based material, The coloring solution contains tetrabromophenolphthalein ethyl ester (TBPE) as an active ingredient.

5. A kit for measuring the degree of infiltration of wood or wood-based materials, The infiltration measurement is a measurement of the infiltration degree of a quaternary ammonium compound-containing agent into wood or a wood-based material, tetrabromophenolphthalein ethyl ester (TBPE), and an instruction manual describing a method for testing wood for moisture penetration.

6. A kit for preserving wood or wood-based materials, comprising: a wood preservative containing a quaternary ammonium compound as an active ingredient; and a color developing solution containing tetrabromophenolphthalein ethyl ester (TBPE) as an active ingredient for measuring the degree of penetration of the wood preservative into wood.

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