JPS58118505A - Lumber treating composition - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides sodium metaborate (Na2B204.8)
120 or Na2B2O4・4H20) and 2.4.6-
The present invention relates to a wood treatment composition containing dolibromophenol sodium salt as an active ingredient.

The wood treatment compositions of the present invention are very stable and can be used at any stage of raw wood or sawn timber, and can be used by any conventional treatment means such as dipping, painting, pressure pouring, spreading, spraying, etc. However, tree I can be processed.

As the import of wood has increased in recent years, μB rot-proofing treatment of wood grains has become increasingly important. This is because logs are transported from distant logging areas and are exposed to harsh conditions for long periods of time, resulting in damage to their quality due to wood rot and pests. The lauan wood that is produced is suitable for the breeding of yellow beetles, and after sawing,
Feeding damage caused by the flat-footed bark beetle has increased significantly. Inorganic anti-mold agents made of heavy metals such as mercury, tin, and copper are typical wood anti-fungal agents that have been used in the past, but they are difficult to handle because they are highly toxic to humans and livestock. Currently, chromium, copper, arsenic compound-based wood preservatives and organic chlorine-based insect repellents are widely used, but they are no longer suitable for use due to environmental pollution problems caused by drainage, incineration, etc. A wood treatment composition that is even better in terms of prevention of pollution and safety has been desired.

2.4-6-dribromophenol (or its gift) is 5
It is highly safe for humans and livestock, and even when used alone, it has been found to be as effective as a commonly used wood preservative and fungicide. However, in the case of dipping treatment or coating treatment,
Due to insufficient permeability into the wood, treatment is limited to the surface only, and in order to exert sufficient antiseptic effect, treatment must be performed with a chemical solution with a concentration of 5% or more. 2,4.6-to1
The combination of bromophenol and individual preservatives and fungicides may result in insufficient amounts being absorbed due to the crystallinity of most aqueous phase preservatives, or the presence of recrystallized material only on the outside. Therefore, when the wood was used after treatment, it was washed away by wind, rain, sunlight, etc., and the effectiveness of the tiles decreased. On the other hand, borax boric acid mixture, sodium octaborate tetrahydrate (Na2B80
13/4H20) It began to be used as an insect repellent and preservative for Karawan wood. Although the solubility of borate in water is good at 10.7% at 20C, it partially crystallizes when the temperature drops, so treatment such as heating is required when diffusion treatment is performed at a concentration. . Therefore, when we treated the wood with a mixture of sodium metaborate and 2.4.6-tribromophenol sodium salt, which has even better penetration into wood than a borax-boric acid mixture, the concentration used was about half that of the wood. The present invention has been completed by finding out that the cost can be reduced. Hey, Hira! It was also found that the insecticidal effect against the X bark beetle was sufficiently achieved.

The drug of the present invention is formulated as an aqueous solution of sodium metaborate and 2,416-tribromophenol sodium salt, and requires * Tx 6! j Dilute with water according to # and use. The drug of the present invention is stable even at high concentrations at low temperatures, is not flammable, and is safe since no additives are self-combined. For example, sodium borate (or its aqueous solution), which is heavily used for preserving wood, has 2
- Even when 4.6-1 ribromophenol sodium salt is mixed at a fairly low concentration, the mixture is unstable and crystallization of sodium octoborate occurs immediately, making it unsuitable for practical use. The drug of the present invention has no such concerns and can be treated at low temperatures and high concentrations as needed. Once the agent of the present invention is used, the amount applied per surface area of wood is
It is usually used at a concentration of 0.5% or more as 100 to 200 cC/m'. In addition to treatment conditions such as pressure treatment and surface coating treatment, the actual concentration to be used must be determined based on the wood material and climate conditions. For example, southern hardwood (
When treating materials (such as lauan wood) by the diffusion method, when sodium metaborate is dissolved in water, it contains 10 or more units of boric acid (H, BO5) and 5 units or more of 2.4.6-1 lipromophenol. Containing donor fluids are desired. As described above, the agent of the present invention can be easily diluted to the required concentration when used, and any conventional wood treatment method such as dipping, coating, or pressure treatment can be used. Due to the synergistic effect of sodium and 2.4.6-1 liprocephenol,
Compared to the case where each drug is used as a single agent, the amount of equipment used can be reduced to less than half, making it extremely economical and safe to use. Hereinafter, the present invention will be explained in more detail with reference to Examples and Experimental Examples.

Example 1゜2.4.6-Tribromophenol sodium salt (32
, 596) Sodium metaborate (Na2
B204・4H20) 1o1.8? Add, mix and dissolve, and add water to bring the temperature to 10,100O. This drug G′i,
Further dilute with water to reach the required concentration.

Comparative Example 1° Tribromophenol sodium salt (32,34) solution.・Comparative example 2゜Sodium metaborate (N32B204/4H20) 20
Dilute 6.66t with water L"C1000In6.!:.

Experimental Example A test was conducted using 1° minimum inhibitory concentration agar culture method using 7 quarts of bacteria according to JISK-2911. The culture temperature was 26υ±2C for 5H.
The results of determining the minimum inhibitory concentration of mold and decay fungi after intercultivation are as follows.

Table 1 ASperigillus niger 0.002
5(@0.0025(@0.0025(%)Pen+c
iXliumcitrinum O,[l[J5
0.0025 [1,0025Tr
icodermavilide O,0250,02
50,01 Phizopus nigricans,
0.05 0.025 0.01 Ghealomiun
globosum Q, (1050, 110250,
0025Coriolus versicolor
O,050,0250,01Tyrmyces pa
lustris [1,010,010,0025Table 1
As is clear from Example 1. (2,4゜6-dribromophenol and sodium metaborate) showed a very large synergistic effect, and Comparative Example 1. , and Comparative Example 2.0 alone, it was proven that the effective stool density could be reduced to less than half.

Regarding Asperigillus niger, it has been determined that it is sufficiently effective even when used as a single agent in low doses.

Experimental Example 2゜Wood Application Test When applied to wood, the distribution state of 214+6-IJ bromophenol salt was examined to determine how much electricity it would absorb.

Example 1. Dilute the coating solution with 2.4.6-17 promophenol sodium salt to 2 L and sodium metaborate to 1,251 m. did. Comparative Example 10 was similarly diluted with water to prepare 2.4°6-dribromophenol sodium salt and adjusted to a temperature of 2°C. The test wood was lauan wood with a moisture content of 15 mo.
0100a tangential direction) x 100 W C force direction)
It was made with a size of 300 m (in the direction of the fibers), and the ends of both ends were sealed with epoxy resin.

The treatment method is each on the surface excluding the wood end; I#4v and L
Coating *k 600CC/1K7z VCt, -
Ccjt h L.

friend. Comparative Example 10 The L time required for the coating solution prepared from the chemical to be absorbed from the surface of the woody plant 4 was 20 seconds. on the other hand,
The coating solution prepared from Example 1 was absorbed in 15 seconds.

After air-drying the coated test piece indoors for 96 hours, a sample was taken and analyzed using gas chromatography.
Doriglomophenol sodium salt was detected. The sample collection site is 1 U from each surface, and 1 U from each surface.
The analysis results of samples collected in 15 steps up to 5 meters are as shown in Table 2.0.

Table 2 1-2 2994 2862 2-5 2795 2542 6-4 2358 2247 4-5 2044 2102 5-6 1356 2006 6-7 1148 1956 7-8 861 1582 8-9 722 1654 9-10 766 1363 10-11 524 1091 11-12 515 1069 12-13 584 815 16-14 512 785 14-15 120 721 As is clear from Table Z, compared to the single agent 2.4.6-bromophenoluna) IJum salt Much higher permeability can be obtained by using the drug of Example 1 (incorporation of metaboric acid). This is metaboric acid) IJ
This improvement is thought to be due to the excellent permeability of Um into wood.

Experimental example: 6° and insecticidal effect against rat bark beetles.
A hole with a depth of about 10 mm was made and the larvae, two months old after spawning, were harvested from artificial feed rearing IIC.

Furthermore, fill the hole with wood flour and seal it with Nocerafine, place it in a thermostat at 26C, RH 70, and after 24 hours,
Two weeks later, four weeks later, a total of 6 soft x-rays! After 4 weeks, the larvae were removed from the wood and the outside of the wood was observed.

2.4 By adding sodium metaborate to t6-dolipromophenol sodium salt, it exhibited high insecticidal efficacy with lower active ingredients than each single agent, and Example 1
These drugs have shown sufficient efficacy for practical use.

Patent issuer / & / Shiko 1 Chemical Corporation (2 others)

Claims (1)

[Scope of Claims] A wood treatment composition containing sodium metaborate and 2.4.6-dribromophenol sodium salt as active ingredients. 2) The composition according to claim 1, which is characterized by antiseptic and antifungal treatment. 6) The composition according to claim 1, which is characterized by a treatment for controlling wood pests such as oyster bark beetle.