JP2002097247A - Polyurethane resin composition for controlling termite and polyurethane foam - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a polyurethane resin composition excellent in the control of termite using a small amount of a termite repellent agent irrespective of agricultural chemicals or non-agricultural chemicals, and a polyurethane foam produced from the polyurethane resin composition and heat insulating materials or heat insulators for architecture obtained from the same are provided. SOLUTION: To the polyurethane resin obtained by reacting with a polyol component and a polyisocyanate component, in the polyurethane resin composition having at least a kind of an anti-termite agent, a foaming agent, a flame retardant, a catalyst and a bubble controlling agent. The polyurethane resin composition having the anti-termite repellency which is characterized by modifying using (A) a polyester polyol composed of an aromatic polybasic acid and a polyalcohol as a polyol component, or (B) a polyol chosen from at least one of a polyalkylene oxide adduct of a thrylenediamine is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polyurethane resin composition and a polyurethane foam excellent in termite resistance, and a heat insulating or insulating material for buildings obtained therefrom. Regardless of the present invention, the present invention relates to a polyurethane resin composition having excellent termitic resistance with a small amount of termiticide components, a polyurethane foam produced from the polyurethane resin composition, and a heat insulating or heat insulating material for buildings obtained therefrom. .

[0002]

2. Description of the Related Art Conventionally, as a method for obtaining a foamed resin molded article having termite resistance, a method of adding a pyrethroid-based termiticide component to a foamed polyurethane resin and foaming the molded article has been proposed. , O-Diethyl-o-3,5,6-1
-Trichloro-2-pyridyl phosphorothioate (generic name: chlorpyrifos) or o, o-diethyl-o- (α-
BACKGROUND ART Termite-resistant foamed polystyrene resin molded articles and foamed polyurethane resin molded articles containing an organic phosphorus compound such as cyanobenzylideneamino)) phosphorothioate (general name: phoxime) in a molded article are known.

Recently, Japanese Patent Application Laid-Open No. 2000-219601 discloses a termite-resistant foamed resin molded article.
Specific termiticide components, for example, N-[(6-chloro-3-
Pyridyl) methyl] -N-ethyl-N'-methyl-2-
Termite-resistant foamed resin molded article containing nitro-1,1-ethylidenediamine, 1- (6-chloro-3-pyridyl) methyl-3-methyl-2-cyanoguanidine, etc., JP-A-10-259264 Then, as a termiticide component,
5-amino-1- (2,6-dichloro-4-trifluoromethylphenyl) -3-cyano-4-trifluoromethylsulfinylpyrazole (generic name: fipronil)
JP-A-10-259263 discloses a molding composition of a foamed polyurethane resin containing a specific compound having a chloropyridylmethyl group as a termiticide component, and JP-A-6-259263. 29
Japanese Patent No. 4165 proposes an insect repellent heat-insulating material containing a specific pyrethroid compound in a foamed polyurethane resin as a termiticide component.

[0004] Despite these proposals, however, foaming polyurethane resins and the like have not yet been sufficiently developed.
It is difficult to completely control the damage caused by termites, and development of a new effective termite control method is desired. Furthermore, from the viewpoint of recent regulations on volatile organic compounds (VOCs) in homes and the removal of pesticides, it is desirable to reduce the use of pesticides and deleterious substances in termite control, but few pesticides and deleterious substances are required. Non-corresponding termites are ineffective and need to be used in large quantities as a drug in order to enhance their effectiveness. Therefore, there is a strong demand for the development of a polyurethane resin having excellent termitic resistance using termiticide components that do not correspond to pesticides or deleterious substances.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a polyurethane resin composition having excellent termiticidal properties by using a small amount of termiticide components irrespective of non-pesticidal or pesticidal compounds. An object of the present invention is to provide a polyurethane foam produced from the composition, and a heat insulating material or a heat insulating material for buildings obtained therefrom.

[0006]

Means for Solving the Problems The present inventors have made intensive studies to overcome the above-mentioned problems of the prior art, and as a result, focused on raw materials for polyurethane resins and used aromatic components as polyol components of raw materials for polyurethane resins. When a polyester polyol containing an ester group of a polybasic acid and a polyhydric alcohol or a polyurethane resin composition containing a specific amount of a polyalkylene oxide adduct of tolylenediamine was prepared, surprisingly, a small amount of termite control was obtained. With the addition of agent components,
It has been found that excellent termite resistance can be obtained. The present invention
It has been completed based on these findings.

That is, according to the first aspect of the present invention,
Polyurethane resin obtained by reacting a polyol component and a polyisocyanate component, a termiticide, and a foaming agent,
In a polyurethane resin composition containing at least one of a flame retardant, a catalyst, and a foam stabilizer, (A) a polyester polyol comprising an aromatic polybasic acid and a polyhydric alcohol as a polyol component, or (B) a tolylenediamine. There is provided a termite-proof polyurethane resin composition characterized by being modified with at least one polyol selected from polyalkylene oxide adducts.

According to the second aspect of the present invention, the first aspect is provided.
In the invention of (1), at least 30% by weight of a polyester polyol comprising an aromatic dibasic acid and a polyhydric alcohol as a polyol component, based on the polyol component.
The present invention provides a termite-proof polyurethane resin composition characterized by containing.

Further, according to a third aspect of the present invention, in the first aspect, as the polyol component, (B) at least 30% by weight of a polyalkylene oxide adduct of tolylenediamine is contained based on the polyol component. The present invention provides a termite-resistant polyurethane resin composition.

Further, according to a fourth aspect of the present invention, in the first aspect, as the polyol component,
A mixture of (A) a polyester polyol comprising an aromatic dibasic acid and a polyhydric alcohol and (B) a polyalkylene oxide adduct of tolylenediamine is contained at least 30% by weight based on the polyol component. Provided is a polyurethane resin composition having termite resistance.

On the other hand, according to the fifth aspect of the present invention, the first
In any one of the above inventions, the termiticide is selected from moon peach extract, hiba oil, hinokitiol-based drug, silafluofen-based drug, etophene blox-based drug, carbamate-based drug, triazine-based drug, or Saigo latex A polyurethane resin composition excellent in termite resistance, characterized by being at least one kind of non-pesticide termiticide.

According to the sixth aspect of the present invention, the fifth aspect is provided.
In the invention of the present invention, as a non-pesticidal termiticide, a silafluofen-based agent is 0.00% based on the polyurethane resin composition.
There is provided a polyurethane resin composition having excellent termite resistance, characterized by containing 1 to 1% by weight.

Further, according to a seventh aspect of the present invention, there is provided a polyurethane foam excellent in termite resistance, which is produced from the polyurethane resin composition according to any one of the first to sixth aspects. Is done.

According to the eighth aspect of the present invention, the seventh aspect is provided.
A heat insulating material or a heat insulating material for buildings, which is excellent in termite resistance, comprising the polyurethane foam according to the invention of the present invention.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail. Polyurethane can be usually produced by reacting a polyisocyanate component represented by diisocyanate and a polyol component as raw materials. The polyurethane resin composition of the present invention is most characterized in that the termite-controlling agent is improved in termite-controlling effect (effect-enhancing effect) by selecting and containing a specific polyol as the raw material.

1. Aromatic polybasic acid ester polyol In the polyurethane resin composition of the present invention, at least one aromatic polybasic acid ester polyol is used as a polyol component as a raw material. Aromatic polybasic acid ester polyol is a polyester polyol containing in its molecule an ester group of an aromatic polybasic acid such as aromatic dibasic acid or aromatic tribasic acid and a polyhydric alcohol such as diol or triol. is there. Recycled PET polyol is also a kind of aromatic polybasic acid ester polyol, and thus can be used as aromatic polybasic acid ester polyol.

Examples of aromatic polybasic acids include aromatic dibasic acids such as phthalic acid and isophthalic acid, aromatic tribasic acids such as trimellitic acid, and aromatic tetrabasic acids such as pyromellitic acid. No. In the present invention, aromatic dibasic acids are preferably used from the viewpoint of ease of reaction and the like.

Examples of the polyhydric alcohol include diols and triols, and any of those generally used in the production of polyurethane resins can be used without any problem. , Ethylene glycol, 1,2-propanediol, 1,3-propanediol, 1,3-butanediol, 1,4-butanediol, neopentyl glycol, pentanediol. Saturated or unsaturated low molecular weight glycols such as hexanediol, octanediol, 1,4-butenediol, diethylene glycol, triethylene glycol, and dipropylene glycol are exemplified. Triols include trimethylolpropane, trimethylolethane, 3-methyl-1,3,5-pentanetriol,
1,2,3-butanetriol, 1,2,3-pentanetriol, 2-methyl-1,2,3-butanetriol and the like can be mentioned, and as the tetrahydric alcohol, pentaerythritol and the like can be mentioned. Among them, diols are preferably used because of their ease of reaction with aromatic polybasic acids, for example, aromatic dibasic acids.

The aromatic polybasic acid ester polyol, for example, in the case of an aromatic dibasic acid and a diol, is represented by the following general formula (1).

[0020]

Embedded image

(Where Ar represents an aromatic ring, and R represents
It is a hydrocarbon group having 2 to 10 carbon atoms, preferably a hydrocarbon group having 2 to 6 carbon atoms. n is 1 to 10, preferably 1 to 4, and m is in the range of n <m ≦ nx2. )

The content of the aromatic polybasic acid ester polyol must be at least 30% by weight, preferably 40 to 70% by weight, based on the polyol component in order to exhibit the effect of enhancing the termite-controlling effect. % Range. If it is less than 30% by weight, it is difficult to obtain an effect of enhancing termite-controlling effect, and if it is in the range of 40 to 70% by weight,
The polyurethane resin composition is preferred in terms of foam balance and strength.

2. Polyalkylene oxide adduct of tolylenediamine In the polyurethane resin composition of the present invention, at least one of polyalkylene oxide adducts of tolylenediamine is used as a polyol component as a raw material, similarly to the aromatic polybasic acid ester polyol described above. The polyalkylene oxide adduct of tolylenediamine is characterized by addition polymerization of an alkylene oxide condensate such as ethylene oxide to the amine portion of tolylenediamine. The polyalkylene oxide adduct of tolylenediamine is, for example, one represented by the following general formula (2).

[0024]

Embedded image

Wherein EO is an ethylene oxide component, PO is a propylene oxide component, and x is
0 to 10, y is 0 to 10, and x + y is 1 or more. )

As described above, the polyalkylene oxide adduct of tolylenediamine is obtained by addition polymerization of a condensate such as ethylene oxide or propylene oxide to the amine portion. The carbon number of the alkylene oxide is suitably from 2 to 4. The addition rate of alkylene oxide per amine molecule, ethylene oxide,
In the case of 1 to 10 mol and propylene oxide, about 1 to 10 mol is appropriate, and preferably 1 to 5 mol. These may be added alone or as a mixture.
Further, it may be random or block.

The content of the polyalkylene oxide adduct of tolylenediamine should be at least 3 based on the polyol component in order to exhibit the effect of enhancing the termite-controlling effect.
0% by weight, preferably 40 to 1%.
It is in the range of 00% by weight. If it is less than 30% by weight, it is difficult to obtain an effect of enhancing termite-controlling effect.

3. Other polyols In the present invention, at least one of the above-mentioned aromatic polybasic acid ester polyol or polyalkylene oxide adduct of tolylenediamine is used as a polyol component as an essential raw material in a specific amount or more. As long as the objects and effects of the invention are not impaired, polyols, such as polyether-based, polyester-based, polycaprolactam-based, and polycarbonate-based, which are usually used in the production of polyurethane resins, can be appropriately used. As such a polyol, specifically, ethylene glycol,
1,2-propanediol, 1,3-propanediol, 1,3-butanediol, 1,4-butanediol, neopentyl glycol, pentanediol. Saturated or unsaturated low molecular weight glycols such as hexanediol, octanediol, 1,4-butenediol, diethylene glycol, triethylene glycol and dipropylene glycol; active hydrogen-containing amines such as ethylenediamine and triethanolamine; n-butyl Alkyl glycidyl ethers such as glycidyl ether and 2-ethylhexyl glycidyl ether; monocarboxylic acid glycidyl esters such as persatic acid glycidyl ester, and adipic acid, phthalic acid, isophthalic acid, terephthalic acid, maleic acid, fumaric acid, succinic acid, Oxalic acid, malonic acid, glutaric acid, pimelic acid, speric acid,
Examples thereof include polyester polyols obtained by dehydrating and condensing dibasic acids such as azelaic acid, sebacic acid and dimer acid or anhydrides thereof; polyester polyols obtained by ring-opening polymerization of a cyclic ester compound. .

4. Polyisocyanate In the polyurethane resin composition of the present invention, the raw material polyisocyanate component is not particularly limited, and any polyisocyanate component conventionally used for producing a polyurethane resin can be used.

As the polyisocyanate, there can be used an aromatic system such as diphenylmethane diisocyanate and tolylene diisocyanate, an alicyclic system such as isophorone diisocyanate, and an aliphatic system isocyanate such as hexamethylene diisocyanate. ,
It is a crude product of diphenylmethane diisocyanate in terms of cost and workability.

5. Termiticide The polyurethane resin composition of the present invention contains a non-pesticidal or pesticidal termiticide. The termiticide is preferably a non-pesticide from the viewpoints of VOC regulations and pesticide removal.

Examples of non-pesticidal termiticides include moon peach extract (trade name: Alpinia MC, etc.), hiba oil, hinokitiol, silafluofen (trade name: silonene, etc.) and etofen blox (trade name: metrofen) ), Carbamate drugs such as Bassa and propoxur, triazine drugs such as tripropyl isocyanurate, and Saigo latex. These are usually 0.1% based on the polyurethane resin composition.
It is used in a ratio of 001 to 1% by weight. As an agrochemical-based termitic agent, for the purpose of the present invention, it may be used in a very small amount. In that case, chlorpyrifos, phoxime, pyridafenthion, organophosphorus drugs such as fenitrothion, pyrethroid drugs such as vermethrin, etc. Or an acetamiprid drug (trade name: Mospiran, etc.) can be used, but a non-organophosphorus drug such as a pyrethroid or acetamiprid drug is more preferable in view of the effect on human health.

6. Other Components To the polyurethane resin composition of the present invention, a foaming agent, a flame retardant, a catalyst, a foam stabilizer, and the like can be appropriately added as components other than the above as long as the object of the present invention is not impaired.

In a preferred embodiment of the present invention, a polyurethane resin is foamed and used as a polyurethane foam. As a foaming agent for that,
HCFC-141b, HFC-134a, HFC-24
5fa, HFC-365mfc and other chlorofluorocarbons, water, n
-Hydrocarbons such as pentane and isopentane, and the like, and preferably CFCs and water are used. The amount of the foaming agent is usually 0.1% based on the polyurethane resin composition.
１５15% by weight.

Examples of the flame retardant include tris (β-chloropropyl) phosphate, triethyl phosphate, trimethyl phosphate and the like. Of these, tris (β-chloropropyl) phosphate is preferably used. These are usually used at a ratio of 0 to 15% by weight based on the polyurethane resin composition.

Examples of the catalyst for accelerating the urethanization reaction include organometallic compounds such as lead octoate and dibutyltin dilaurate, and amine compounds such as triethylenediamine and tetraethylenediamine. N, N ',
Triazine compounds such as N "-tris (dimethylaminopropyl) hexahydro-S-triazine; potassium compounds such as potassium octylate and potassium acetate; and quaternary ammonium salts of octylic acid. It is usually used in a proportion of 0.001 to 4% by weight based on the composition.

Examples of the foam stabilizer generally include polyoxyalkylenes such as polyalkylene alkyl ethers and silicones such as organopolysiloxane. These are usually 0.1% based on the polyurethane resin composition. Used at a rate of ~ 3% by weight.

Further, the polyurethane resin composition of the present invention includes various solvents such as dimethylformamide (DMF), tetrahydrofuran (THF), methyl ethyl ketone (MEK) and toluene, an antioxidant, an ultraviolet absorber, a light stabilizer, and a coloring agent. Other additives and the like can be used as desired.

As described above, conventional polyurethane resin compositions cannot prevent termites from being damaged by termites unless relatively large amounts of pesticidal termiticides are contained.
In the polyurethane resin composition of the present invention, by selecting a specific polyol as a raw material polyol component, it is possible to prevent damage to termites by using a small amount of any of the non-pesticide-based and pesticide-based termiticides. . In particular, future VO
Considering the regulations of C and regulations of organophosphorus drugs such as chlorpyrifos, the effect of preventing the damage to termites by containing a small amount of non-pesticide termiticides is great. As the use of the termite-resistant polyurethane resin composition,
Polyurethane foam is used as a heat insulating material or a heat insulating material for houses and buildings that are damaged by termites, and can be suitably used for these applications. The method for producing and molding the polyurethane foam can be appropriately selected from conventionally known methods, and is not particularly limited.

[0040]

Next, the present invention will be described in more detail with reference to examples and comparative examples, but the present invention is not particularly limited to these examples. The evaluation of termite control in Examples and Comparative Examples was conducted by the Japanese Wood Preservation Association Standard No. 11 (1992), "Testing method for termite-controlling efficacy of wood termiticides for coating, spraying and dipping (1)". Laboratory Test Method ". The acceptance criterion for termite resistance is that the weight loss rate is 3% or less on average.

Example 1 In Example 1, FD-5 manufactured by Asahi Glass Co., Ltd., which is a polyalkylene oxide adduct of tolylenediamine, was used as a polyol component and a termite-controlling component.
90 (a mixture of EO and PO adducts starting from shoe-claw / tolylenediamine / aminoalcohol / glycerin and containing 30% tolylenediamine), and 108 parts by weight (polyol component) based on the polyurethane resin composition. 100% by weight on the basis), and as an isocyanate component, MR-200 manufactured by Nippon Polyurethane Industry Co., Ltd., which is a crude product of diphenylmethane diisocyanate,
150 parts by weight based on the polyurethane resin composition.
As a termiticide, silafluofen (silonene), a non-pesticidal pyrethroid-like drug, was used in an amount of 0.9 parts by weight based on the polyurethane resin composition. further,
Based on the polyurethane resin composition, DABCO manufactured by Sankyo Air Products Co., Ltd.
1.2 parts by weight of 33LV (33% of 1,4-diazabicyclo [2,2,2] octane / 67% of dipropylene glycol), and as a foam stabilizer, SH-190 manufactured by Toray Silicone Co., Ltd., which is a silicone, was added. Parts by weight, 0.9 parts by weight of water as a foaming agent, and chlorofluorocarbon HCFC14
Polyurethane resin composition containing 27 parts by weight of 1b and 9 parts by weight of Akzo Japan's filol PCF, which is a tris (β-chloropropyl) phosphate, as a flame retardant was prepared, and at 20 ° C., using a cage mixer. 3
The mixture was stirred at 000 rpm and foamed and cured in a 30 × 30 × 30 square foam box to prepare a polyurethane foam, and the termite resistance was evaluated. Table 1 shows the composition of the polyurethane resin composition and the evaluation results.

Example 2 In Example 2, similarly to Example 1, the components of the polyurethane resin composition shown in Table 1 were blended in the proportions shown in the table to prepare a polyurethane resin composition. In particular, as a polyol component and an anti-termite component, phthalic acid ester polyol, PL manufactured by Toho Rika Co., Ltd.
-305 was 54.6 parts by weight (50% by weight based on the polyol component) based on the polyurethane resin composition, and FD-500ED manufactured by Asahi Glass Co., Ltd., which is an ethylenediamine PO adduct, was used as the other polyol component based on the polyurethane resin composition. And 54.6 parts by weight (50% by weight based on the polyol component). Then, foaming and curing were performed in the same manner as in Example 1 to prepare a polyurethane foam, and the termite resistance was evaluated. Table 1 shows the composition of the polyurethane resin composition and the evaluation results.

Example 3 In Example 3, a pesticidal acetamiprid (a non-pesticidal pyrethroid-like drug, silafluorene (trade name: silonene)), which is a termiticide component of Example 1, was used. (Product name: Mospiran) 0.05
Except that parts by weight were used, the components of the polyurethane resin composition shown in Table 1 were blended in the proportions shown in the same table as in Example 1 to prepare a polyurethane resin composition, and a polyurethane foam was produced. The termite resistance was evaluated. Table 1 shows the composition of the polyurethane resin composition and the evaluation results.

In Example 4, 28 parts by weight of a phthalate ester polyol, PL-305 manufactured by Toho Rika Co., Ltd. based on the polyurethane resin composition (25.6 parts by weight based on the polyol component) was used as the polyol component and the termite-controlling component. %) And JP-707 manufactured by Toho Rika Co., Ltd., which is a phthalic acid / terephthalic acid ester polyol, is 27 parts by weight (24.7% by weight based on the polyol component) based on the polyurethane resin composition, and as other polyol components,
54.45 parts by weight of the ethylenediamine EO / PO adduct NL-500 manufactured by Sanyo Chemical Industries, Ltd. based on the polyurethane resin composition (49.7 parts by weight based on the polyol component)
Weight percent), and based on the polyurethane resin composition, POLYCA manufactured by Air Product Japan Co., Ltd., which is a triazine-based catalyst for a nullation catalyst, is used as a catalyst.
1.2 parts by weight of T42 (N, N ', N "-tris- (3-dimethylaminopropyl) hexahydro-S-triazine), and only a chlorofluorocarbon HCFC141b without using water as a foaming agent. Except for using 27 parts by weight,
In the same manner as in Example 1, the components of the polyurethane resin composition shown in Table 1 were blended in the proportions shown in the same table to prepare a polyurethane resin composition, and a polyurethane foam was produced, and termite resistance was evaluated. Table 1 shows the composition of the polyurethane resin composition and the evaluation results.

[0045]

[Table 1]

Comparative Examples 1 to 7 The components of the polyurethane resin composition shown in Table 1 were blended in the proportions shown in the table to prepare polyurethane resin compositions. In the same manner as in Example 1, foaming and curing were performed to prepare a polyurethane foam, and termite resistance was evaluated. Table 1 also shows the composition of the polyurethane resin composition and the evaluation results.
Shown in Comparative Example 1 differs from Example 1 in that a non-pesticidal termiticide component is not blended. That is, it is a polyurethane resin composition containing no termiticide component. Comparative Example 2 is the same as Example 1 except that the polyol is a polyalkylene oxide adduct of tolylenediamine, FD-590 manufactured by Asahi Glass Co., Ltd. A mixture of PO adducts and containing 30% tolylenediamine) to a polyalkylene oxide adduct of ethylenediamine EL532 manufactured by Asahi Glass Co., Ltd.
SA (a mixture of EO and PO adducts starting from shoe rose / ethylenediamine / amino alcohol / glycerin). The other components are the same as in Example 1. In Comparative Example 3, the amount of the non-pesticidal termiticide of Comparative Example 2 was increased to 1.5 parts by weight. In Comparative Example 4, the polyol was replaced with FD-500ED manufactured by Asahi Glass Co., Ltd., which is an ethylenediamine PO adduct in Example 1. In Comparative Example 5, the amount of the non-pesticidal termiticide of Comparative Example 4 was increased to 1.5 parts by weight. In Comparative Example 6, 0.9 parts by weight of the non-pesticidal termiticide of Comparative Example 2 was replaced with 0.3 parts by weight of mospiran as the pesticide-based termiticide. That is, in comparison with Example 3, the polyol component was changed to a polyol having no termite-controlling effect, and the amount of mospiran as an agrochemical-based termiticide was increased. Comparative Example 7 includes, as a polyol component,
This is a product using FB-103 (a mixture of EO and PO adducts starting from phenol) of Mannich-based polyol, which is an aromatic polyol, manufactured by Asahi Glass Co., Ltd.

From the results of the above Examples and Comparative Examples, as the polyol as a raw material of the polyurethane resin composition, a polyester polyol containing an ester group of an aromatic polybasic acid and a polyhydric alcohol or a polyalkylene of tolylenediamine Surprisingly, polyurethane resin compositions containing at least one oxide adduct and containing a small amount of termiticides, especially non-pesticidal termiticides, have been found to be excellent in termiticidal properties. Was. In addition, the Mannich polyol, which is the same aromatic polyol, furthermore, a polyalkylene oxide adduct of ethylenediamine, which is a compound similar to the polyalkylene oxide adduct of tolylenediamine, may not be able to obtain the termiticidal effect. It was revealed. From these results, it became clear that the composition containing a specific polyol having an effect of enhancing termite-controlling effect can reduce the amount of non-pesticide-based termiticides or pesticide-based termite-controlling agents, and is environmentally friendly. The termite polyurethane resin composition can be obtained.

[0048]

The polyurethane resin composition of the present invention comprises, as essential components, (A) a polyester polyol containing an ester group of an aromatic polybasic acid and a polyhydric alcohol, or (B) a polyalkylene of tolylenediamine. By containing at least one of the polyols selected from the oxide adducts, a remarkable effect of being excellent in termite resistance is exhibited. Therefore, only low-concentration non-pesticide drugs,
A termiticide-containing polyurethane resin composition can be obtained, and the termiticide component is contained in the composition, so that the scattering concentration during construction is low and the composition is environmentally friendly. As a result, it is possible to produce a polyurethane resin excellent in termite resistance at low cost.

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Claims (8)

[Claims] 1. A polyurethane resin composition comprising a polyurethane resin obtained by reacting a polyol component and a polyisocyanate component and containing at least one of a termiticide, a foaming agent, a flame retardant, a catalyst and a foam stabilizer. It is modified with (A) a polyester polyol comprising an aromatic polybasic acid and a polyhydric alcohol as a polyol component, or (B) at least one polyol selected from a polyalkylene oxide adduct of tolylenediamine. A polyurethane resin composition having termite resistance, characterized by comprising: 2. The termite control according to claim 1, wherein the polyol component comprises at least 30% by weight of a polyester polyol comprising (A) an aromatic dibasic acid and a polyhydric alcohol, based on the polyol component. Polyurethane resin composition having properties. 3. The termite-resistant polyurethane resin according to claim 1, wherein the polyol component contains at least 30% by weight, based on the polyol component, of a polyalkylene oxide adduct of (B) tolylenediamine. Composition. 4. A mixture of (A) a polyester polyol comprising an aromatic dibasic acid and a polyhydric alcohol, and (B) a polyalkylene oxide adduct of tolylenediamine, as the polyol component, at least based on the polyol component. 2. The termite-resistant polyurethane resin composition according to claim 1, wherein the composition contains 30% by weight. 5. The termiticide is at least one member selected from moon peach extract, hiba oil, hinokitiol, silafluofen, ethophen brox, carbamate, triazine, and Saigo latex. The polyurethane resin composition according to any one of claims 1 to 4, which is a non-pesticide termiticide. 6. As a non-pesticide termiticide, a silafluofen-based drug is used in an amount of 0.001 based on the polyurethane resin composition.
The polyurethane resin composition having excellent termite resistance according to claim 5, which is contained in an amount of from 1 to 1% by weight. 7. A polyurethane foam excellent in termite resistance, which is produced from the polyurethane resin composition according to any one of claims 1 to 6. 8. A heat insulating material or a heat insulating material for buildings, which is made of the polyurethane foam according to claim 7, and which is excellent in termite resistance.