JP2683601B2 - Moisture-preserving, insect-preventing and ant-preventing treatment method for houses - Google Patents
Moisture-preserving, insect-preventing and ant-preventing treatment method for housesInfo
- Publication number
- JP2683601B2 JP2683601B2 JP63124996A JP12499688A JP2683601B2 JP 2683601 B2 JP2683601 B2 JP 2683601B2 JP 63124996 A JP63124996 A JP 63124996A JP 12499688 A JP12499688 A JP 12499688A JP 2683601 B2 JP2683601 B2 JP 2683601B2
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- Prior art keywords
- insect
- activated carbon
- ant
- moisture
- house
- Prior art date
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Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は、家屋特に木造家屋の床下部分の土壌の防湿
防腐防虫防蟻処理方法に関する。Description: TECHNICAL FIELD The present invention relates to a method for treating the soil under the floor of a house, particularly a wooden house, with a moisture-preserving, insect-preserving and insect-controlling treatment.
［従来の技術］ 建造物特に木造家屋に防湿防腐防虫防蟻処理を施すこ
とは重要な事柄である。[Prior Art] It is an important matter to apply a moisture proof, antiseptic and ant control treatment to a building, especially a wooden house.
建造物がシロアリの被害を受けた場合には建造物を破
壊することさえあり、また、木材を腐らす木材腐菌も建
造物にとって大敵である。It can even destroy a structure if it is damaged by termites, and wood rot fungi that damage wood are also a big enemy of the structure.
特に床下部分を構成する土台等の建造物の強度をにな
う部分にシロアリの食害や木材腐朽菌が繁殖するときに
は、建造物を非常に危険な状態にさらすことになる。In particular, when termite feeding damage or wood-destroying fungus propagates in a portion of the underfloor, such as a base, which has a high strength, the structure is exposed to a very dangerous state.
この腐朽や蟻害の主な原因としては、建築材料や工法
の変化により家屋の密閉性が高くなり、それら構造材部
分が高湿状態に保たれやすくなったことがあげられる。
床下の湿分の最大の供給源は床下の土壌であり、土壌か
らの湿気を遮断することは、家屋の保守にとって重要で
ある。The main cause of this decay and ant damage is that due to changes in building materials and construction methods, the hermeticity of houses has increased, making it easier for those structural materials to be kept in a high-humidity state.
The greatest source of underfloor moisture is the underfloor soil, and blocking moisture from the soil is important for home maintenance.
木材の腐朽菌やシロアリは、高含水率の木材に好んで
繁殖し、また、北海道などで大きな被害を与えているナ
ミダタケは、根状菌糸束を地中に伸ばし、土壌から水分
を補給しながら家屋の床下の木材を腐朽させるなど、い
ずれも床下の土壌から繁殖に必要な水分を得ており、こ
の水分を遮断することが被害を防止するうえで極めて有
効な手段となる。Wood-rotting fungi and termites prefer to breed on high-moisture content wood, while Namidatake, which has caused great damage in Hokkaido and other areas, spread root-shaped hyphae bundles into the ground to replenish water from the soil. In all cases, such as the decay of timber under the floor of a house, the moisture required for reproduction is obtained from the soil under the floor, and blocking this moisture is an extremely effective means for preventing damage.
従来、床下の上記のごとき対策として各種シートやフ
ィルムを敷設することが行われ、これらシートなどの中
に防虫薬剤などの薬剤を混入せしめることも行われてい
る。しかし、これらシートなどを敷設する方法では、不
定形な基礎の形に合せてシートの切断を必要とするなど
その作業が繁雑であったり、また、シートの破れやシー
トの継ぎ目などからシロアリや害虫が出入りするなどの
欠点がある。Conventionally, various sheets and films have been laid as a measure against the above underfloor, and a chemical such as an insect repellent is mixed in these sheets. However, in the method of laying these sheets, the work is complicated such as cutting the sheets according to the shape of the irregular base, and the termites and pests can be damaged from the tearing of the sheets and the seams of the sheets. There are drawbacks such as entering and leaving.
一方、アスファルト乳剤に防蟻剤や防菌剤を添加混合
してなる乳剤を土壌面に散布することや（特開昭56−11
5705号公報）、耐水性を有する合成樹脂エマルジョンと
アスファルト乳剤とからものを土壌に散布すること（特
開昭60−19834号公報）も行われているが、これらは一
般にその乾燥被膜形成に時間がかかるなどの欠点があ
る。On the other hand, an asphalt emulsion prepared by adding and mixing an anti-termite agent and a fungicide is sprayed on the soil surface (JP-A-56-11).
5705), spraying a synthetic resin emulsion having water resistance and an asphalt emulsion to soil (Japanese Patent Laid-Open No. 60-19834), but these generally take time to form a dry film. There are drawbacks such as being expensive.
さらに、特開昭50−99870号公報には、殺虫性化合物
および防水性を有する有機物質の混合物を多孔性鉱物質
粒状物に吸着させて得られる殺虫性組成物を家屋床下の
地表面に撒布する家屋床下害虫の防除法が記載されてい
るが、床下害虫の防除を目的としたもので防湿効果がな
く、また、多孔性鉱物質粒状物に殺虫性化合物などを吸
着させたもので、当該薬剤の固定性も劣る。Further, in JP-A-50-99870, an insecticidal composition obtained by adsorbing a mixture of an insecticidal compound and an organic substance having waterproofness on a porous mineral granular material is spread on the ground surface under a house floor. A method for controlling underfloor pests of a house is described, but it is for the purpose of controlling underfloor pests and does not have a moisture-proofing effect. The fixability of the drug is also poor.
一方、古くから吸着剤や脱臭剤として利用されている
活性炭を、寒冷地におけるナミダタケの防除に使用する
ことも行われているが、厚さ10cm以上に活性炭を敷きつ
める必要があり、活性炭の使用量が多いという欠点があ
る。また、この活性炭を敷きつめる方法では、活性炭上
部の床下木部にはシロアリが巣食っており、シロアリ対
策として充分でないことを示している。On the other hand, activated carbon, which has been used as an adsorbent and deodorant for a long time, is also used for the control of Namitake mushrooms in cold regions, but it is necessary to spread the activated carbon to a thickness of 10 cm or more. It has the drawback of being large in quantity. In addition, this method of laying activated carbon shows that termites nest in the under-floor tree part above the activated carbon, which is not sufficient as a measure against termites.
［発明が解決しようとする問題点］ 本発明はかかる従来技術の有する欠点を解消して、家
屋の床下部分に良好な防湿防腐防虫防蟻対策を施すこと
ができる技術を提供することを目的とする。[Problems to be Solved by the Invention] It is an object of the present invention to solve the drawbacks of the prior art and to provide a technology capable of providing a good anti-moisture / preservation / insect / ant / ant control measure to the underfloor portion of a house. To do.
［問題点を解決するための手段］及び［作用］ 本発明は、家屋の床下土壌面に、防腐防虫防蟻薬剤を
カプセル中に包含せしめたカプセル化物を活性炭に吸着
せしめてなる防腐防虫防蟻薬剤組成物を、撒布すること
を特徴とする家屋の防湿防腐防虫防蟻処理方法、およ
び、家屋の床下土壌面に、撥水剤および防腐防虫防蟻薬
剤を活性炭に吸着せしめてなる防腐防虫防蟻薬剤組成物
を、撒布することを特徴とする家屋の防湿防腐防虫防蟻
処理方法に存する。[Means for Solving Problems] and [Action] The present invention relates to an antiseptic insect-controlling agent obtained by adsorbing an encapsulated product obtained by encapsulating an antiseptic insect-controlling agent in a capsule on activated carbon on the underfloor soil surface of a house. A method for damp-proofing, preservative and insect-controlling treatment for a house, which comprises spraying a pharmaceutical composition, and a preservative and insect-controlling agent in which a water repellent and a preservative-controlling insect-controlling agent are adsorbed on activated carbon on the soil surface under the floor of the house The present invention relates to a method for treating a house moisture-preserving, insect-preserving, and insect-controlling, which comprises applying the ant pharmaceutical composition.
本発明に使用される活性炭は、木材やヤシの実のカラ
などの各種のものを原料としたもので良く、粉末活性炭
でも造粒活性炭でも良い。活性炭の内部は著しく多孔質
であり、防腐防虫防蟻剤に対して強力な吸着能をもつ。The activated carbon used in the present invention may be made of various materials such as wood and coconut nut color, and may be powdered activated carbon or granulated activated carbon. The inside of activated carbon is remarkably porous and has a strong adsorption ability for antiseptic, insecticide and ant-preventive agents.
本発明では各種の防腐防虫防蟻剤（以下単に薬剤とい
うこともある）を使用することができる。In the present invention, various antiseptic and insect repellant agents (hereinafter sometimes simply referred to as chemicals) can be used.
ここに例示すると、有機リン系化合物、ドリン剤、ピ
レスロイド系化合物、有機塩素化合物、ほう素化合物、
ふつ素化合物等の防虫剤、JIS K1550に規定する１種、
２種、３種のフエノール類、無機ふつ化物系木材防腐
剤、JIS K1554に規定する１号、２号、クロム、銅、ひ
素化合物系木材防腐剤、JIS K2439に規定するクレオソ
ート油等がある。これら薬剤は水等に溶解し、あるいは
そのまま液剤の形で用いられる。Exemplified here, organophosphorus compounds, dolin agents, pyrethroid compounds, organochlorine compounds, boron compounds,
Insect repellents such as fluorine compounds, one specified in JIS K1550,
There are two or three types of phenols, inorganic fluoride-based wood preservatives, No. 1 and No. 2 specified in JIS K1554, chromium, copper, arsenic compound-based wood preservatives, and creosote oil specified in JIS K2439. . These drugs are dissolved in water or the like, or used as they are in the form of liquid formulations.
その具体例としては、次のようなものが挙げられる。 Specific examples thereof include the following.
0,0−ジエチル−０−（アルファ−シアノベンジリデン
アミノ）チオホスフェート （別称、ホキシム） 0,0−ジメチル−０−（３−メチル−４−ニトロフェニ
ル）チオホスフェート （別称、フェントロチオン） 0,0−ジエチル−０−（３−オキソ−２−フェニル−2H
ピリダジン−６−イル）ホスホロチォエート （別称、ピリダフェンチオン） 0,0−ジエチル−０−3,5,6−トリクロル−２−ピリジル
ホスホロチオエート （別称、クロルピリホス） ２−クロル−１−（2,4,5−トリクロルフェニル）ビニ
ルジメチルホスフェート （別称、テトラクロルビンホス） ２−イソプロポキシフェニル−Ｎ−メチルカルバメート （別称、ブロポクスル） ２−sec−ブチルフェニル−Ｎ−メチルカルバメート 1,3,5−トリ−ｎ−プロピル−1,3,5−トリアジン−2,4,
6−（1H,3H,5H）−トリオン （別称、TPIC） 2,2′,3,3,3,3′,3′,3′−オクタクロロジプロピルエ
ーテル （別称、オクタクロロジプロピルエーテル） 0,0−ジエチル−０−2,4−ジクロロフェニルチオホスフ
ェート （別称、ECP） 本発明によれば、活性炭に上記薬剤を吸着させること
により防湿，防腐，防虫，防蟻効果を兼備させることが
でき、本発明では薬剤は吸着能の強力な活性炭に吸着さ
れているので薬剤の流出が極めて少なく環境衛生が保全
され、また、薬剤が活性炭に吸着されているので作業者
の安全が保たれ、然も、当該吸着物を撒布すれば良く、
シートの切断やつなぐなどの手間がいらず、作業が簡単
である。0,0-Diethyl-0- (alpha-cyanobenzylideneamino) thiophosphate (also known as foxime) 0,0-dimethyl-0- (3-methyl-4-nitrophenyl) thiophosphate (also known as fentrothione) 0 , 0-Diethyl-0- (3-oxo-2-phenyl-2H
Pyridazin-6-yl) phosphorothioate (also known as pyridaphenthione) 0,0-diethyl-0-3,5,6-trichloro-2-pyridylphosphorothioate (also known as chlorpyrifos) 2-chloro-1- (2,4 , 5-Trichlorophenyl) vinyldimethylphosphate (also known as tetrachlorovinphos) 2-isopropoxyphenyl-N-methylcarbamate (also known as bropoxur) 2-sec-butylphenyl-N-methylcarbamate 1,3,5-tri -N-propyl-1,3,5-triazine-2,4,
6- (1H, 3H, 5H) -Trione (also known as TPIC) 2,2 ', 3,3,3,3', 3 ', 3'-octachlorodipropyl ether (also known as octachlorodipropyl ether) 0,0-Diethyl-0-2,4-dichlorophenyl thiophosphate (also known as ECP) According to the present invention, it is possible to combine moisture-preventing, antiseptic, insect-repellent and anti-termite effects by adsorbing the above-mentioned chemicals on activated carbon. In the present invention, since the drug is adsorbed on activated carbon having a strong adsorption ability, the outflow of the drug is extremely small, environmental hygiene is preserved, and since the drug is adsorbed on activated carbon, the worker's safety is maintained, Also, just spread the adsorbate,
The work is easy because there is no need to cut and connect sheets.
本発明で上記薬剤に、アルカリで分解されやすい例え
ば有機リン系の薬剤を用いる場合、活性炭は一般にアル
カリ性であるので、分解されるおそれがある。In the present invention, when a drug that is easily decomposed by an alkali, for example, an organic phosphorus-based drug is used as the above-mentioned drug, activated carbon is generally alkaline and may be decomposed.
そこで、本発明では活性炭を用いるための上記対策と
して、薬剤をカプセル中に包含せしめ、これを活性炭に
吸着せしめるようにした。Therefore, in the present invention, as a measure against the use of activated carbon, the drug is contained in a capsule and is adsorbed on the activated carbon.
これにより上記アルカリ分解に対する対策を施せるば
かりでなく、アルカリで分解されやすい薬剤の分解が抑
止され、しかも、長期間にわたり少しずつ薬剤をカプセ
ルより発散させるので、薬効の持続性が良好になる。As a result, not only the above measures against alkali decomposition can be taken, but also the decomposition of the drug that is easily decomposed by alkali is suppressed, and moreover, the drug is gradually exhaled from the capsule over a long period of time, and the sustainability of the drug effect is improved.
当該カプセルの例としては、ゼラチン、ポリウレタ
ン、アルギン酸ソーダ、ポリビニルアルコール、卵アル
ブミン、エポキシ樹脂、ポリスチレン、ポリカーボネー
ト、エチルセルロース、スチレン−ブタジエン共重体、
酢酸ビニル−エチレン共重体、塩化ビニル、塩化ビニリ
デン、アクリル酸エステル、ビニルエステル、メタクリ
ル酸エステル、ポリエステル、ポリカーボネート、ポリ
アミド、塩素化天然ゴム、セルロース誘導体などが挙げ
られる。Examples of the capsule, gelatin, polyurethane, sodium alginate, polyvinyl alcohol, egg albumin, epoxy resin, polystyrene, polycarbonate, ethyl cellulose, styrene-butadiene copolymer,
Examples thereof include vinyl acetate-ethylene copolymer, vinyl chloride, vinylidene chloride, acrylic acid ester, vinyl ester, methacrylic acid ester, polyester, polycarbonate, polyamide, chlorinated natural rubber, and cellulose derivative.
さらに、本発明では、活性炭に、防腐防虫防蟻薬剤に
加えて撥水剤をも吸着させるようにした。Furthermore, in the present invention, the activated carbon is made to adsorb the water repellent agent in addition to the antiseptic, insect repellant and chemical agents.
このように、活性炭に、撥水剤をも吸着させること
に、床下の防湿性能をより一層発揮させることができ
る。In this way, by adsorbing the water-repellent agent on the activated carbon as well, the moistureproof performance under the floor can be further exerted.
すなわち、撥水剤を活性炭に吸着させておくと、該撥
水剤により、床下土壌面上の空間における結露水や外か
らくる水が撥水され、これら水を土壌面やその下部に追
いやる。That is, when the water repellent is adsorbed on the activated carbon, the water repellent repels dew condensation water in the space above the soil surface under the floor and water coming from the outside, and drives these water to the soil surface or its lower portion.
撥水剤を活性炭に吸着させていない活性炭のみの場合
は、活性炭はこれら水を吸湿している。In the case of only the activated carbon in which the water repellent is not adsorbed on the activated carbon, the activated carbon absorbs the water.
従って、前者の方が活性炭の残留水分は少なくなって
おり、その為に、床下の防湿性能を最大限に発揮させる
ことができる。Therefore, in the former case, the residual water content of the activated carbon is smaller, and therefore, the moistureproof performance under the floor can be maximized.
一方、床下土壌面からの湿気に対しては、撥水剤によ
り土壌中に追いやるし、上記の如き残留水分効果もあ
り、撥水剤を吸着させていない活性炭と同様の吸湿性能
を奏することができるので問題はない。On the other hand, with respect to moisture from the underfloor soil surface, it is driven into the soil by a water repellent, and there is also a residual water effect as described above, and it is possible to exhibit the same hygroscopic performance as activated carbon that does not adsorb the water repellent. I can, so there is no problem.
当該撥水剤の例としては、シリコーンオイルなどのシ
リコーン系撥水剤、各種フッ素系撥水剤、ワックス類、
油類、ピリジニウム塩類、アルキルエチレン尿素類、ク
ロム塩類、アルミニゥム塩類などを挙げることができ
る。Examples of the water repellent include silicone water repellents such as silicone oil, various fluorine water repellents, waxes,
Examples thereof include oils, pyridinium salts, alkylethylene ureas, chromium salts, aluminum salts and the like.
［実施例］ 次に、本発明の実施例を示す。Example Next, an example of the present invention will be described.
実施例１ クロルピリホスの薬剤有効成分として20％含有させる
様にポリウレタン樹脂によりマイクロカプセル化したカ
プセル化物を、活性炭1m3当り7.5kg吸着させ、このよう
に吸着された活性炭を（社）日本木材保存協会規格第17
号「防蟻剤処理非木質系製品の室内防蟻効力試験方法及
び性能基準」に基づいて、忌避性能試験、シロアリ貫通
防止試験を行った。Example 1 7.5 kg per 1 m 3 of activated carbon was adsorbed with an encapsulation product of polyurethane resin so as to contain 20% of chlorpyrifos as a drug active ingredient. Standard No. 17
A repellent performance test and a termite penetration prevention test were conducted in accordance with No. "Indoor ant-terminating efficacy test method and performance standard for non-wood-based products treated with ant-termicides".
又、接触試験も行った。 A contact test was also conducted.
なお、活性炭の撒布厚を2cmとした。 The sprinkling thickness of activated carbon was 2 cm.
結果を第１表〜第３表に示す。 The results are shown in Tables 1 to 3.
実施例２ 活性炭への吸着量を1m3当り5kgとした以外は、実施例
１と同様にした。Example 2 Example 2 was repeated except that the amount of adsorption on activated carbon was 5 kg per 1 m 3 .
結果を第１表〜第３表に示す。 The results are shown in Tables 1 to 3.
実施例３ 活性炭への吸着量を1m3当り2.5kgとした以外は、実施
例１と同様にした。Example 3 Example 3 was repeated except that the amount of adsorption on activated carbon was 2.5 kg per 1 m 3 .
結果を第１表〜第３表に示す。 The results are shown in Tables 1 to 3.
実施例４ オクタクロロジプロピルエーテルの薬剤有効成分とし
て60％含有する化合物を活性炭1m3当り2.5kg吸着させた
以外は、実施例１と同様にした。Example 4 Example 1 was repeated, except that a compound containing 60% of octachlorodipropyl ether as a drug active ingredient was adsorbed at 2.5 kg per 1 m 3 of activated carbon.
結果を第１表〜第３表に示す。 The results are shown in Tables 1 to 3.
比較例 薬剤無処理の活性炭を使用した以外は実施例１と同様
にして試験を行った。Comparative Example A test was performed in the same manner as in Example 1 except that activated carbon without chemical treatment was used.
結果を第１表〜第３表に示す。 The results are shown in Tables 1 to 3.
実施例５ 防蟻薬剤等の活性炭への吸着量を0.1m3当たり0.25kg
とし、撥水剤の活性炭への吸着量を0.1m3当たり0.1kgと
して試験活性炭層をつくり、0.1m3当たり5kgの水を散布
して活性炭層の重量増加量を未処理活性炭層と比較し
た。 Example 5 0.25 kg per 0.1 m 3 of adsorbed amount of an anti-termite agent on activated carbon
The amount of water repellent adsorbed on activated carbon was 0.1 kg per 0.1 m 3 to form a test activated carbon layer, and 5 kg of water per 0.1 m 3 was sprayed to compare the weight increase of the activated carbon layer with the untreated activated carbon layer. .
結果を第４表に示す。 The results are shown in Table 4.
尚、実施例１と同様の試験を行ったところ、実施例１
と同様の結果を示した。 When the same test as in Example 1 was conducted,
And the same results were obtained.
実施例６ 外部と湿気の透過しない様にした箱（100×100×50c
m）中に水分を充分含ませた土を敷き、その上に 何も処理していない活性炭 実施例５と同様に処理した活性炭を、それぞれ厚さ5c
mになる様に敷きつめて、上部空間層の湿度を測定し
た。Example 6 A box (100 × 100 × 50c) that is impermeable to moisture from the outside.
m) is laid with soil sufficiently moistened, and no activated carbon is applied to the soil. Activated carbon treated in the same manner as in Example 5 has a thickness of 5c.
Humidity of the upper space layer was measured by laying it down to m.
結果を第５表に示す。 The results are shown in Table 5.
尚、実施例１と同様の試験を行ったところ、実施例１
と同様の結果を示した。 When the same test as in Example 1 was conducted,
And the same results were obtained.
［発明の効果］ 以上本発明によれば家屋の床下部分に良好な防湿防腐
防虫防蟻対策を施すことができた。[Effects of the Invention] As described above, according to the present invention, it is possible to take good measures against moisture, preservatives, insects and ants on the underfloor portion of a house.
Claims (2)
カプセル中に包含せしめたカプセル化物を活性炭に吸着
せしめてなる防腐防虫防蟻薬剤組成物を、撒布すること
を特徴とする家屋の防湿防腐防虫防蟻処理方法。1. A house characterized in that an antiseptic and insect ant-preventive chemical composition obtained by adsorbing an encapsulated product obtained by encapsulating an antiseptic and insect ant-preventive chemical in a capsule onto activated carbon is spread on the soil surface under the floor of the house. Moisture-proof, antiseptic, insect-proof and ant-preventive treatment method.
虫防蟻薬剤を活性炭に吸着せしめてなる防腐防虫防蟻薬
剤組成物を、撒布することを特徴とする家屋の防湿防腐
防虫防蟻処理方法。2. A moist-preservation, insect-prevention and insect-control agent for a house, which is characterized in that a water-repellent agent and a preservative, insect-repellent and ant-preventive agent are adsorbed on activated carbon on the soil surface of the floor of the house. Ant treatment method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63124996A JP2683601B2 (en) | 1988-05-24 | 1988-05-24 | Moisture-preserving, insect-preventing and ant-preventing treatment method for houses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63124996A JP2683601B2 (en) | 1988-05-24 | 1988-05-24 | Moisture-preserving, insect-preventing and ant-preventing treatment method for houses |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01295948A JPH01295948A (en) | 1989-11-29 |
| JP2683601B2 true JP2683601B2 (en) | 1997-12-03 |
Family
ID=14899308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63124996A Expired - Fee Related JP2683601B2 (en) | 1988-05-24 | 1988-05-24 | Moisture-preserving, insect-preventing and ant-preventing treatment method for houses |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2683601B2 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5238095A (en) * | 1975-09-16 | 1977-03-24 | Fundookin Shoyu Kk | Continuous process for boiling and steaming materials and apparatus fo r the same |
| JPS53124620A (en) * | 1977-04-08 | 1978-10-31 | Kureha Chem Ind Co Ltd | Encapsulation of organic phosphoric acid pesticide |
| JPS5538326A (en) * | 1978-09-11 | 1980-03-17 | Lion Corp | Insecticidal composition |
-
1988
- 1988-05-24 JP JP63124996A patent/JP2683601B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01295948A (en) | 1989-11-29 |
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