JP4557078B2 - Ant-proof foamed resin molding - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a foamed resin molded article having ant-proofing properties that can be used as a heat insulating material, a heat insulating material, etc. for a building.

Conventionally, O, O-diethyl-O-3,5,6-1-trichloro-2-pyridyl phosphorothioate (generic name: chlorpyrifos) and O, O-diethyl-O- (α-cyanobenzylideneamino)) phosphorothioate ( An ant-proof foamed polystyrene resin molded product containing an organophosphorus compound such as (generic name: Hoxime) in the molded product is known (Patent Documents 1 and 2).
However, a foamed resin molded article containing an organophosphorus compound is generally not sufficient in terms of heat stability during processing, or safety and durability of the molded article.
In addition, ant-proof foamed resin moldings containing pyrethroid compounds are also known, but depending on the application situation, the ant-proofing effect is not always sufficient, and the development of excellent ant-proofing foamed resin moldings is desired. It was.

Japanese Patent Publication No. 6-10276 Japanese Unexamined Patent Publication No. 63-159451

  An object of the present invention is to provide an ant-proofing foamed resin molded product that can exhibit excellent performance in terms of ant-proofing effect, its sustainability, thermal stability, etc. when applied to heat insulating materials, heat insulation materials, etc. of buildings And

〔式中、Ａは２−クロロ−５−チアゾリル基またはテトラヒドロフラン−３−イル基を表わす。〕
で示される化合物（以下、本化合物と記す）を該発泡樹脂成形体に対して０．００１〜１％含有し、発泡樹脂がポリウレタン樹脂であることを特徴とする防蟻性発泡樹脂成形体（以下、本成形体と記す）に関するものである。 Under such circumstances, the present inventors have investigated the anti-foaming foamed resin molded product, and as a result, the foamed resin molded product containing the specific compound represented by the general formula (1) or (3) solves the conventional problems. The present inventors have found that excellent performance can be achieved and have reached the present invention.
That is, the present invention is an ant-proof resin molded body, which has the general formula (1) or (3) as an ant-proof component.

[Wherein, A represents a 2-chloro-5-thiazolyl group or a tetrahydrofuran-3-yl group. ]
(1) The compound (hereinafter referred to as the present compound) is contained in an amount of 0.001 to 1% with respect to the foamed resin molded article, and the foamed resin is a polyurethane resin. Hereinafter, this is referred to as a molded body).

  According to the present invention, when this is applied to a heat insulating material, a heat insulating material, etc. of a building, an ant-proofing foam resin that can exhibit excellent performance in terms of ant-proofing effect, its sustainability, thermal stability, etc. A molded body can be provided.

  Examples of the compound of the general formula (1) in this compound include 1- (2-chloro-5-thiazolyl) methyl-3-methyl-2-nitroguanidine, 1- (tetrahydrofuran-3-yl) methyl-3-methyl- Mention may be made of 2-nitroguanidine.

  Examples of the compound of the general formula (3) include 3-[(2-chloro-5-thiazolyl) methyl] -5-methyl-4-nitroiminotetrahydro-1,3,5-oxadiazine.

Examples of termites that can be effectively controlled according to the present invention include the following.
Isoptera: Mastotermitidae genus, Termopsidae genus Termite, genus Zootermopsis, genus Thermoteris, genus Hoteromoptis, Genus teremida, Glyptotermes], Hodotermitidae, Cyprididae [Hodotaters, Microhotermes, Anacanothermes], Rhinotermitidae, Rhizotermites, Het erotermes spp., Coptotermes spp., Schedolinotermes sp], Serritermitidae sawtooth termites family, Termitidae termites family [Amitermes genus, Drepanotermes genus, Hopitalitermes genus, Trinervitermes genus, Macrotermes genus, Odontotermes genus, Microtermes genus, Nasutitermes genus, Pericapritermes genus, to Anoplotermes genera] The pest to which it belongs.

  Among the pests belonging to the above-mentioned Isoptera, the types of termites to be controlled particularly in Japan include the termites termites (Reticulitermes supertus), the termites termites (Copttermes formosanus), the American termites termites (Incite termites). (Cryptothermes domesticus), Japanese termites (Odontotermes formosanus), Japanese termites (Neothermes koshunensis), Japanese termites (Gyptotermes satsumensis), Nakajima termites. es fuscus), Kodama termites (Glyptotermes kodamai), comb Moto termites (Glyptotermes kushimensis), giant termite (Hodotermopsis japonica), Kou Shu Ye termite (Coptotermes guangzhoensis), Amami termites (Reticulitermes miyatakei), R. flavipes (Reticulitermes flaviceps amamianus), Kang Mont termites (Reticulitermes sp.), Termite termes Takasagoensis, Peripriterme nitobei, Musca termite (Sinocap) literates Mushae) and the like.

  The content of the present compound in the molded product is usually 0.001 to 1% by weight, preferably 0.05 to 0.5% by weight.

  Examples of the foamed resin include foamed thermoplastic resins and foamed thermosetting resins. Specifically, for example, foamed polyolefin resins such as foamed polyethylene resin and foamed polypropylene resin, and foamed methacrylic acid such as foamed polymethyl methacrylate resin. In addition to ester resins, polyurethane foam resins, and polystyrene foam resins, examples thereof include foam resins made of a copolymer of styrene and methacrylate. A foamed polyurethane resin is used as the foamed resin applicable to the molded body.

  If necessary, additives such as a plasticizer, a stabilizer, an antistatic agent, and a colorant can be appropriately added to the molded article.

A known method can be applied as a method for producing the molded body. For example, while pre-foamed resin particles are allowed to flow in the air, the pre-foamed particles are sprayed with a solvent solution and an adhesive of the present compound, and then air-dried. If necessary, pre-foamed resin particles not sprayed with the present compound are mixed and foam-molded (Japanese Patent Laid-Open No. 10-36549), and the solvent solution of the present compound is applied to unfoamed resin particles, for example, resin beads. Examples of the method include foaming after coating (Japanese Patent Laid-Open No. 63-159451). Further, for example, as in the case of a polyurethane resin, it is also possible to apply a method in which the present compound is added and dissolved in a polyether polyol containing a foaming agent, and then polyisocyanate is mixed and foamed.
This molded product can be used in the same way as ordinary foamed resin molded products for building insulation, heat insulation, sound insulation, shock absorbers, electrical insulation, etc. Stable over a long period of time.

Example 1
(1) 180 g of polystyrene resin pre-foamed about 50 times is put into a fluid coating machine (fluid coating machine) [Mixgrad, manufactured by Okawara Manufacturing Co., Ltd.], and air is blown to flow. Next, a diluent (water: diacetone alcohol) comprising a mixture of 8 g of 5% aqueous solution of 1- (tetrahydrofuran-3-yl) methyl-3-methyl-2-nitroguanidine and 30 g of an acrylic / styrene resin emulsion as an adhesive. = 19: 1 (weight ratio)) to prepare a mixture diluted with 30 g.
This mixture is sprayed in a fluid coating machine at a rate of 30 g / min and applied to the surface of the fluidized pre-expanded particles. After the entire amount of the mixture is applied, air is further blown to dry the surface of the pre-expanded particles, whereby ant-preventive pre-expanded particles are obtained. This anti-foaming expanded particle is heat-molded by a known method such as the method described in JP-A-10-36549, for example, to give 1- (tetrahydrofuran-3-yl) methyl-3-methyl-2-nitro. An ant-proof foamed resin molded article having a guanidine content of about 0.2% by weight is obtained.
(2) By mixing the above-mentioned ant-preventive pre-expanded particles with a pre-expanded polystyrene resin in a ratio of 50:50 about 50 times that the present compound is not applied, and heat-molding in the same manner as in (1). , 1- (tetrahydrofuran-3-yl) methyl-3-methyl-2-nitroguanidine content of 0.1% by weight is obtained.

Example 2
Instead of 1- (tetrahydrofuran-3-yl) methyl-3-methyl-2-nitroguanidine, 3-[(2-chloro-5-thiazolyl) methyl] -5-methyl-4-nitroiminotetrahydro-1,3 3-[(2-Chloro-5-thiazolyl) methyl] -5-methyl-4-nitroiminotetrahydro-1,3,5 by carrying out the same treatment as in Example 1 except for using 5,5-oxadiazine. -An ant-proof foamed resin molded article having an oxadiazine content of 0.2 wt% or 0.1 wt% is obtained.

Example 3
Polyether polyol containing foaming agent HCFC (trade name: HYCEL M-173C, manufactured by Toho Chemical Industry Co., Ltd., main component: polyether polyol and HCFC-141b) 25 g, 1- (tetrahydrofuran-3-yl) methyl- After adding and dissolving a predetermined amount of 3-methyl-2-nitroguanidine, this solution is put in a polyethylene resin bag (49 cm × 21 cm), and further polyisocyanate (trade name, manufactured by Toho Chemical Industry Co., Ltd.). : HYCEL 360P, main component: polyisocyanate) 25 g are mixed at room temperature and allowed to react by vibration, whereby an anti-foaming polyurethane resin molded article is obtained.

Example 4
Instead of 1- (tetrahydrofuran-3-yl) methyl-3-methyl-2-nitroguanidine, 3-[(2-chloro-5-thiazolyl) methyl] -5-methyl-4-nitroiminotetrahydro-1,3 By performing the same treatment as in Example 3 except that, 5-oxadiazine is used, an anti-foaming polyurethane resin molded article is obtained.

Test example 1
The ant-proof foamed polyurethane resin molded article produced by the method of Example 3 was cut out into φ1.7 cm × length 3 cm, and about 2.5 cm from the lower end of the glass tube (inner diameter 1.7 cm × length 15 cm) The molded body was packed as a resin layer. About 1.5 cm on both sides of the resin layer is sandwiched with 4% agar, and 50 termite ants and 5 soldier ants are released in the space above the resin layer of the glass tube. did. The test was repeated three times. The results are shown in Table 1.
In the agar layer perforation situation in the result column of Table 1, A represents that termites have penetrated the resin layer and also penetrated the lower agar layer, and B represents that the termites have penetrated the resin layer and further below. C represents that termites could not completely penetrate the resin layer, and no perforation of the lower agar layer was observed.

*: “Compound A”: 1- (tetrahydrofuran-3-yl) methyl-3-methyl-2-nitroguanidine

  The harmful arthropod control composition of the present invention exhibits an excellent control effect against various harmful arthropods and is useful for combating harmful arthropods.

Claims (1)

An ant-proof foamed resin molded article having 1- (tetrahydrofuran-3-yl) methyl-3-methyl-2-nitroguanidine or 3-[(2-chloro-5-thiazolyl) methyl]-as an ant-proof component Ants containing 5-methyl-4-nitroiminotetrahydro-1,3,5-oxadiazine in an amount of 0.001 to 1% with respect to the foamed resin molded article, wherein the foamed resin is a foamed polyurethane resin. Foamed resin moldings.