JPH09136304A - Insect repellent wood board - Google Patents

Abstract

(57) Abstract: An insect-repellent wood board is provided. SOLUTION: An adhesive (for example, a urea resin, a urea-melamine co-condensation resin, a phenol-melamine co-condensation resin) containing a pyrethroid compound (for example, ciphenothrin, permethrin, cypermethrin, fenvalerate) is used to convert wood chips or wood fibers. Insect-proof wood board obtained by molding and hot pressing resin, phenol resin, isocyanate resin). Further, by containing an iodopropargyl carbamate compound in the adhesive, a wood board having insect repellent, mildewproof and antiseptic properties can be obtained.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to an insect-controlling wood board.

[0002]

The wood board called particle board or fiber board, which is made by molding and thermocompressing small pieces of wood and wood fibers with an adhesive, can be produced from various waste materials and small-diameter wood. Is attracting attention as an effective use of. By the way, although these wooden boards are used for building materials, fitting materials, furniture materials, etc., they are easily damaged by wood pests such as termites and bark beetles.
It is often used after being treated with insect repellent.

[0003]

DISCLOSURE OF THE INVENTION The present invention provides an insect repellent wood board obtained by simultaneously performing insect repellent treatment during the production of a wood board, which comprises cyphenothrin [α-cyano-3-phenoxybenzyl]. 1R-chrysanthemate], permethrin [3-phenoxybenzyl 3- (2,2-dichlorovinyl) -2,2-dimethylcyclopropanecarboxylate], cypermethrin [α-cyano-3-phenoxybenzyl 3- (2 ，
2-dichlorovinyl) -2,2-dimethylcyclopropanecarboxylate] and fenvalerate [α-cyano-3-phenoxybenzyl 2- (4-chlorophenyl) -3-methylbutyrate]. The present invention relates to an insect-repellent wood board, which is manufactured by molding a wood piece or a wood fiber by using an adhesive containing the pyrethroid compound of 1.

[0004] It has been conventionally known in Japanese Patent Publication No. Hei 5-36201, etc. to mix and use a micro-encapsulated insecticide with a specific adhesive when manufacturing an insect-repellent plywood. In the production, the pesticide is hot pressed at a higher temperature for a longer time than in the production, so that the pesticides suitable for practical use are extremely limited. According to the invention, cyphenothrin, permethrin, cypermethrin and fenvalerate are suitable for use with adhesives in the shaping, hot pressing of wood chips or wood fibers, in particular cyphenothrin. It is preferable.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION By using an iodopropargyl carbamate compound having antifungal preservative activity in addition to the above-mentioned specific pyrethroid compound, antifungal preservative property can be imparted to the wood board. Examples of the iodopropargyl carbamate compound used include iodopropargyl alkyl carbamate such as iodopropargyl butyl carbamate, and iodopropargyl phenylcarbamate, and these iodopropargyl carbamate compounds can be used even under hot pressure conditions when producing a wood board. , Genus Alternaria, Aspergillus, without losing its antifungal and antiseptic activity
Genus, Cladosporium, Fusarium, Gliocladium, Pe
Surface contaminants such as nicillium, Rhizopus, Trichoderma, Ceratocystis, Diplodia, Verticicladiella
Genus, Phialophora, Alternaria, Chlorosporium
Genus, Fusarium, etc., sapwood discoloring bacteria, Coniophora, Gloeop
hyllum, Lentinus, Serpula, Tyromyces Schi
genus zophyllum, genus Coriolus, genus Pycnoporus, Acremonium
Genus, Bispora, Ceratocystis, Chaetomium, Coni
othyrium, Cylindrocarpon, Gliocladium, Humi
cola, Ophiostoma, Pestalotia, Phialocephara
Genus, Phialophora, Phoma, Rhinocladiella, Sc
It exhibits an excellent antifungal and antiseptic activity against wood-rotting fungi such as ytalidium.

[0006] The wood board means a particle board which is a board (plate material) obtained by reconstituting a small piece of wood with an adhesive, a fiberboard which is a board obtained by reconstituting wood fibers with an adhesive, and the like. Small pieces of wood, the main raw material for boards, include chips, flakes, wafers and strands. The wood board of the present invention includes wood chips and wood fibers, cifenotrin, permethrin,
Molded with an adhesive containing cypermethrin or fenvalerate, manufactured by hot pressing, as an adhesive,
For example, urea resin, urea / melamine co-condensation resin, phenol / melamine co-condensation resin, phenol resin, and isocyanate resin are used.

The hot-pressing conditions for producing the wood board of the present invention differ depending on the kind and thickness of the wood board, the kind of adhesive, etc., but are generally about 130 to 250 ° C. and 5 to 40.
A pressure of about kg / cm ² is applied for about 0.1 to 1 minute (per 1 mm of thickness) or more. Cyphenothrin, permethrin, cypermethrin or fenvalerate is usually contained in the adhesive in an amount of 0.05 to 5% by weight, and in the produced wood board in an amount of about 0.01 to 0.5 kg / m ² . When an iodopropargyl carbamate compound is used, the iodopropargyl carbamate compound is usually contained in the adhesive in an amount of 0.1 to 5% by weight, and in the produced wood board in an amount of about 0.01 to ² kg / m ² .

When a pyrethroid compound selected from the group consisting of cyphenothrin, permethrin, cypermethrin and fenvalerate and, if necessary, an iodopropargyl carbamate compound is contained in the adhesive, the pyrethroid compound or the like is directly contained in the adhesive. Alternatively, it may be contained in the adhesive as a solution dissolved in an appropriate solvent, or as an appropriately formulated product. Further, a curing agent such as ammonium chloride or a curing accelerator such as sodium carbonate may be contained in the adhesive.

[0009]

【Example】

Production Example 1 630 parts by weight of chips of radiatapine material, 63 parts by weight of urea resin adhesive (solid type conversion), and paraffin wax 3
Parts by weight, 0.95 parts by weight of a curing agent (ammonium chloride) and 0.63 parts by weight of each of the active ingredient compounds shown in Table 1 below are mixed by spraying, and after molding, 150 ° C.
At a maximum compression pressure of 30 kg / cm ² for 4 minutes and a thickness of 12
mm particle board was manufactured.

Production Example 2 630 parts by weight of a chip of radiatapine material, 63 parts by weight of a phenol resin adhesive (in solid form), 0.95 parts by weight of a curing accelerator (sodium carbonate), 1.2 parts by weight of iodopropargyl butylcarbamate and the table below. A paste obtained by mixing 0.63 parts by weight of each of the active ingredient compounds described in 1 is added by spraying, and after molding, the maximum clamping pressure is 30 kg / cm at 170 ° C.
^It was pressed at ² for 7 minutes to produce a particle board having a thickness of 12 mm.

Test Example 1 The particle board obtained in the above Production Example 1 was 1 cm × 1 cm ×
Petri dish cut to 2 cm and covered with damp filter paper (diameter 9c
m, height 2 cm). Next, the termite (Cop
20 termites (formosanus) were released in a petri dish, kept at room temperature for 1 week, and then observed for the number of termites survived and the damage of particle board pieces. Table 1 shows the results. Further, the same test was performed on the particle board obtained in the above Production Example, which was stored under dark conditions at 60 ° C. for 3 months. Table 2 shows the results. In the table, the feeding damage status is indicated by − when no feeding damage is observed at all, and by ++ for those not treated with a drug, and in four stages of −, +, ++, and ++. The doses in the table represent the doses charged at the time of manufacturing the particle board.

[0012]

[Table 1]

[0013]

[Table 2]

As shown in the results of the above table, the particle board of the present invention treated with cifenotrin, fenvalerate and permethrin showed no food damage, whereas the particle board treated with other insecticidal component compounds. In regard to the above, the results were inferior to the particle board of the present invention in terms of the mortality of the termites and the feeding damage status even when a higher dose was used.

Test Example 2 Using the particle board obtained in Production Example 2 above, JIS
The test was conducted according to -Z-2911 "Mold resistance test method". In other words, Aspergillus nigar and Penici, which are the bacterial species that correspond to the JIS-specified test molds 1 to 5 tests
llium citrinum, Rhizopus oryzae, Cladosporium cla
Select dosporioides and Chaetomium globosum, prepare a mixed spore suspension of 5 strains, and add 0.5 ml of the above spore suspension to each of the 30 mm × 30 mm specimens placed on the medium in the petri dish and seal. Then, the cells were cultured for 4 weeks in an incubator maintained at a temperature of 28 ± 2 ° C. and a humidity of 95 to 99%. As a result, in the case of iodopropargyl butylcarbamate untreated, mold growth was observed in 1/3 or more of the upper surface area of the test body, whereas in the particle board obtained in Production Example 2 above, No mold development was observed on the upper surface.

[0016]

INDUSTRIAL APPLICABILITY The insect-controlling wood board of the present invention is easily manufactured and has a high insect-controlling effect.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Izumi Fujimoto 4-2-1 Takashi, Takarazuka-shi, Hyogo Sumitomo Kagaku Kogyo Co., Ltd. (72) Inventor Hayato Teshima 4-53 Kitahama, Chuo-ku, Osaka Sumitomo Kagaku Kogyo Co., Ltd. (72) Inventor Takanobu Saito 194 Sayama Shinkai, Kumiyama-cho, Kuse-gun, Kyoto Prefecture 1 Chemiholtz Co., Ltd. Koko Co., Ltd.

Claims (4)

[Claims] 1. A wood chip or wood fiber is obtained by molding and hot pressing an adhesive containing one or more pyrethroid compounds selected from the group consisting of cyphenothrin, permethrin, cypermethrin and fenvalerate. Characteristic insect-resistant wood board. 2. The adhesive is one or a mixture of two or more selected from the group consisting of urea resin, urea / melamine co-condensation resin, phenol / melamine co-condensation resin, phenol resin and isocyanate resin. Insect-proof wood board. 3. The insect-control wood board according to claim 1, wherein the pyrethroid compound is cyphenothrin. 4. Wood chips or wood fibers are molded and hot pressed using an adhesive containing at least one pyrethroid compound selected from the group consisting of cyphenothrin, permethrin, cypermethrin and fenvalerate and an iodopropargyl carbamate compound. Insect-proof and mold-preservative wood board characterized by being obtained by.