JPH11128389A - Concentrated fire extinguishing liquid and its use method - Google Patents

Concentrated fire extinguishing liquid and its use method

Info

Publication number
JPH11128389A
JPH11128389A JP30981897A JP30981897A JPH11128389A JP H11128389 A JPH11128389 A JP H11128389A JP 30981897 A JP30981897 A JP 30981897A JP 30981897 A JP30981897 A JP 30981897A JP H11128389 A JPH11128389 A JP H11128389A
Authority
JP
Japan
Prior art keywords
parts
weight
fire extinguishing
water
phosphoric acid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP30981897A
Other languages
Japanese (ja)
Other versions
JP3404454B2 (en
Inventor
Junpei Chokai
純平 鳥海
Atsuyuki Oya
淳之 大矢
Satonobu Eto
悟允 江藤
Hiroyuki Takahashi
宏幸 高橋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Morita Miyata Corp
Original Assignee
Miyata Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Miyata Industry Co Ltd filed Critical Miyata Industry Co Ltd
Priority to JP30981897A priority Critical patent/JP3404454B2/en
Publication of JPH11128389A publication Critical patent/JPH11128389A/en
Application granted granted Critical
Publication of JP3404454B2 publication Critical patent/JP3404454B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Fire-Extinguishing Compositions (AREA)

Abstract

PROBLEM TO BE SOLVED: To obtain an ideal fire extinguishing liquid which decreases a change with lapse of time by making its physical values neutral and allows the execution of efficient fire extinguishing activities with little water. SOLUTION: The concd. fire extinguishing liquid is prepd. by adding 22 to 33 pts.wt. phosphoric acid and 20 to 28 pts.wt. monoethanol amine to 32 to 44 pts.wt. water to make the soln. neutral and further adding 7 to 13 pts.wt. ammonium diphosphate thereto. As a result, the fire extinguishing liquid which requires less space for storage, is easy to carry, is neutral in its property values, is eventually free of the change with lapse of time, such as corrosion of the material by long-term storage, is greatly improved in stability and has good solubility in the water is obtd. The execution of the efficient fire extinguishing work with the little water is thus made possible.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、物性値が中性で経
時的変質が少なく、比較的少量の水で効率のよい消火活
動を実施することができ、しかも水損を著しく減少させ
るとともに、使用時の泡の発生を抑制して消火後の残留
消火液処理を容易にし、また特にモノエタノールアミン
の添加量を少なくして消火性能の低下を無くすようにし
た濃縮消火液に関する。 また本発明は保管性がよく、
しかも運搬に便利で水に対する溶解性が良好であり、し
かも林野火災等屋外火災の消火にも適用が可能な多用途
型の消火液原液および消火剤を提供することを目的とす
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a neutralized physical property value, which is capable of carrying out an efficient fire fighting operation with a relatively small amount of water and a small amount of deterioration over time. The present invention relates to a concentrated fire extinguishing solution that suppresses generation of bubbles during use to facilitate treatment of a residual fire extinguishing solution after fire extinguishing, and in particular, reduces the amount of monoethanolamine added to prevent a decrease in fire extinguishing performance. Also, the present invention has good storage properties,
Moreover, it is an object of the present invention to provide a general-purpose fire extinguishing solution and a fire extinguishing agent which are convenient for transportation, have good solubility in water, and are applicable to extinguishing outdoor fires such as forest fires.

【0002】[0002]

【従来の技術】一般的な消火手段としては火元に向けて
淡水を放射散布することがおこなわれるが、火災燃焼物
の種類が暫増するに伴い、粉末系あるいは泡溶液系等の
各種消火薬剤が用いられるようになった。 また固形消
火剤を粉砕して水に対して易溶解性としたものを混合溶
解して使用するようにした固形消火薬剤も開発されるに
至った。 さらに最近では最初から水溶性に調製した液
化消火剤が開発されている。 これは主としてモノエタ
ノールアミンとリン酸等の組成からなるものであり、こ
れ自体はすでに特公昭58−58107号あるいは特公
昭52−37319号に開示されている通りである。
2. Description of the Related Art As a general fire extinguishing means, fresh water is radiated and sprayed toward a fire source. Drugs have come to be used. In addition, a solid fire extinguishing agent has been developed in which a solid fire extinguishing agent that is pulverized to make it easily soluble in water is mixed and used. More recently, liquefied fire extinguishers prepared from the beginning to be water-soluble have been developed. This is mainly composed of a composition such as monoethanolamine and phosphoric acid, and is itself as disclosed in JP-B-58-58107 or JP-B-52-37319.

【0003】[0003]

【発明が解決しようとする課題】しかし淡水を放射散布
する場合には、一般家屋はもとより、特に高層ビルやマ
ンション等のような多層階建物の火災の消火活動をおこ
なう場合、火災とは直接関係のない下層階部分に水の飛
散や流失、漏水が起こり、所謂水損による二次的な災害
を引き起こすことが多い。 さらに住宅地火災のほかに
地震火災や林野火災等水の便が悪い地域においては、限
られた水を効率的に使用しなければならない制限があ
る。
However, in the case of spraying fresh water by radiation, fire-extinguishing activities not only for ordinary houses but also for multi-story buildings such as high-rise buildings and condominiums are directly related to fires. Water is scattered, spilled, and leaked on the lower floors where there is no water, often causing secondary disasters due to so-called water damage. Furthermore, in areas where water access is poor such as earthquake fires and forest fires in addition to residential fires, there is a restriction that limited water must be used efficiently.

【0004】また粉末系あるいは泡溶液系の消火剤につ
いては、上記した水に比べれば消火能力が大きいがコス
ト高となり、したがって多量に用いる場合においてはコ
ンビナートや航空機火災等特殊な場合の使用に重点が置
かれている。 さらに固形消火剤は、主に林野火災等大
規模火災発生時にあらかじめ水に溶解し易いように粉砕
したうえで、これを水に溶解したものをヘリコプター等
により空中から散布することがおこなわれているが、固
形物を水に溶解させるための溶解機を用いる必要があ
り、操作が繁雑でコスト高となり実際的ではない。
The fire extinguishing agent of the powder type or the foam solution type has a larger fire extinguishing ability than the above-mentioned water, but is more costly. Is placed. Furthermore, solid fire extinguishing agents are mainly crushed so that they can be easily dissolved in water, mainly in the event of a large-scale fire such as a forest fire, and then dissolved in water and sprayed from the air using a helicopter or the like. However, it is necessary to use a dissolving machine for dissolving solids in water, and the operation is complicated and costly, which is not practical.

【0005】さらに前記したモノエタノールアミンとリ
ン酸等の組成を主成分とする液化消火剤についても、該
消火剤の物性値としてpHが6以下であるために安定性
の面で問題があり、長期保存による経時変化や材料の腐
食が起こり、消火能力が低下するなどの問題がある。
そこでpHを6以上にして改善する試みもなされている
が、pHを6以上にするためにはモノエタノールアミン
を増量添加する必要があり、その結果モノエタノールア
ミンの増量分に比例して消火性能が減退するという問題
があって、適当な解決手段が見いだせないのが現状であ
る。
Further, the above-mentioned liquefied fire extinguishing agent mainly composed of monoethanolamine and phosphoric acid also has a problem in terms of stability because the physical value of the extinguishing agent is pH 6 or less. There are problems such as a change over time due to long-term storage and corrosion of the material, resulting in a decrease in fire extinguishing ability.
Attempts have been made to increase the pH to 6 or more, but in order to increase the pH to 6 or more, it is necessary to increase the amount of monoethanolamine to be added. The problem is that there is no suitable solution for the problem.

【0006】[0006]

【課題を解決するための手段】そこで本発明にあって
は、所謂水損を無くすとともに、使用時の泡の発生を抑
制して事後処理を容易にし、また保管性がよく運搬に便
利で、しかも水に対する溶解性にも優れ、かつ消火性能
の減退なしに濃縮液の物性値をpH6以上に維持して長
期保存による材料の腐食や経時変化を無くし、長期安定
化をはかることができる優れた濃縮消火液およびその使
用法を開発したものであって、具体的には32〜44重
量部の水に対し、リン酸22〜33重量部とモノエタノ
ールアミン20〜28重量部を添加して中性となし、さ
らに第二リン酸アンモニウム7〜13重量部を添加して
pHを6〜8(±0.4)の範囲内に調整してなる濃縮
消火液に関する。
Therefore, according to the present invention, the so-called water damage is eliminated, the generation of bubbles during use is suppressed, the post-treatment is facilitated, and the storage property is good and the transportation is convenient. Moreover, it has excellent solubility in water, and maintains the physical property value of the concentrated solution at pH 6 or more without deterioration of fire extinguishing performance, thereby eliminating corrosion and aging of the material due to long-term storage, and excellent long-term stability. A concentrated fire-extinguishing liquid and a method for using the same have been developed. Specifically, 22 to 33 parts by weight of phosphoric acid and 20 to 28 parts by weight of monoethanolamine are added to 32 to 44 parts by weight of water. The present invention relates to a concentrated fire extinguishing solution prepared by adding 7 to 13 parts by weight of dibasic ammonium phosphate and adjusting the pH to within a range of 6 to 8 (± 0.4).

【0007】また本発明は、32〜44重量部の水に対
し、リン酸22〜33重量部、モノエタノールアミン2
0〜28重量部、第二リン酸アンモニウム7〜13重量
部を添加するとともに、さらに界面活性剤0.1〜9重
量部を添加してなる濃縮消火液にも関する。 さらに本
発明は、32〜44重量部の水に対し、リン酸22〜3
3重量部とモノエタノールアミン20〜28重量部を添
加して中性となし、さらに第二リン酸アンモニウム7〜
13重量部を添加してなる濃縮消火液を、100容量部
の水に対して0.5〜21重量部添加して使用するよう
にした濃縮消火液の使用法にも関する。
[0007] The present invention also relates to a method for producing a mixture of phosphoric acid 22 to 33 parts by weight and monoethanolamine 2 to 32 to 44 parts by weight of water.
The present invention also relates to a concentrated fire extinguishing liquid obtained by adding 0 to 28 parts by weight and 7 to 13 parts by weight of ammonium diphosphate and further adding 0.1 to 9 parts by weight of a surfactant. Furthermore, the present invention relates to phosphoric acid 22 to 3 to 32 to 44 parts by weight of water.
3 parts by weight and 20 to 28 parts by weight of monoethanolamine were added to make the solution neutral, and furthermore, ammonium diphosphate 7 to
The present invention also relates to a method for using a concentrated fire extinguishing liquid in which 0.5 to 21 parts by weight of a concentrated fire extinguishing liquid to which 13 parts by weight is added is added to 100 parts by volume of water.

【0008】さらに本発明は、32〜44重量部の水に
対し、リン酸22〜33重量部、モノエタノールアミン
20〜28重量部、第二リン酸アンモニウム7〜13重
量部を添加するとともに、さらに界面活性剤0.1〜9
重量部を添加してなる濃縮消火液を、100容量部の水
に対して0.5〜21重量部添加して使用するようにし
た濃縮消火液の使用法にも関する。 さらに本発明は、
32〜44重量部の水に対し、リン酸22〜33重量部
とモノエタノールアミン20〜28重量部を添加して中
性となし、さらに第二リン酸アンモニウム7〜13重量
部を添加してなる濃縮消火液を水に添加混合するととも
に、これを微粒子状に放射して用いるようにした濃縮消
火液の使用法にも関する。
Further, according to the present invention, 22 to 33 parts by weight of phosphoric acid, 20 to 28 parts by weight of monoethanolamine and 7 to 13 parts by weight of ammonium diphosphate are added to 32 to 44 parts by weight of water. Further surfactant 0.1 to 9
The present invention also relates to a method for using a concentrated fire extinguishing liquid in which 0.5 to 21 parts by weight of a concentrated fire extinguishing liquid to which 100 parts by weight of water is added is used. Furthermore, the present invention
To 32 to 44 parts by weight of water, add 22 to 33 parts by weight of phosphoric acid and 20 to 28 parts by weight of monoethanolamine to make it neutral, and further add 7 to 13 parts by weight of ammonium diphosphate. The present invention also relates to a method of using a concentrated fire extinguishing liquid in which a concentrated fire extinguishing liquid is added to water and mixed and radiated into fine particles for use.

【0009】かかる組成比率の濃縮消火液は、モノエタ
ノールアミンの易溶解特性により、水に対する溶解効率
を著しく向上させるばかりでなく、物性値を保存による
経時変化や材料の腐食がなく、しかも消火剤としてもっ
とも有効かつ安定的なpH領域、すなわちpH:6.0
〜8.0の理想的な範囲に維持し、保管性や運搬性を良
好にすることができ、また火災の種類に応じて水で希釈
して用いる。 通常は水による消火方法と同様にして用
い、あるいは希釈溶液を微粒子噴霧状態にて放射して消
火作業を実施することもできる。
[0009] The concentrated fire extinguishing liquid having such a composition ratio not only significantly improves the dissolving efficiency in water due to the easy dissolving property of monoethanolamine, but also does not cause temporal changes due to storage of physical properties and corrosion of materials, and furthermore, the fire extinguishing agent As the most effective and stable pH range, ie, pH: 6.0
It can be maintained in an ideal range of ~ 8.0 to improve storage and transportability, and is diluted with water depending on the type of fire. Usually, the fire extinguishing operation can be performed in the same manner as in the fire extinguishing method using water, or the fire extinguishing operation can be carried out by radiating a diluted solution in the state of fine particle spray.

【0010】[0010]

【発明の実施の形態】以下において本発明の具体的な内
容を説明する。 すなわち本発明においては、消火に際
して限られた水を有効かつ効率的に利用することがで
き、また水だけの場合に比して消火効率がよく、しかも
水以外の消火薬剤の使用量を低減し、かつ使用後の残留
消火液の処理を簡便化させ、しかも水に対する希釈を容
易にするために、主材料として水、リン酸、モノエタノ
ールアミン、および第二リン酸アンモニウムを、それぞ
れ規定量混合して用いる。
DESCRIPTION OF THE PREFERRED EMBODIMENTS The specific contents of the present invention will be described below. That is, in the present invention, limited water can be used effectively and efficiently at the time of fire extinguishing, and the fire extinguishing efficiency is better than when only water is used, and the amount of fire extinguishing agents other than water is reduced. In order to simplify the treatment of residual fire extinguishing solution after use and to facilitate dilution with water, water, phosphoric acid, monoethanolamine, and dibasic ammonium phosphate are mixed in specified amounts as main materials. Used.

【0011】具体的な各組成の成分範囲としては、水:
32〜44重量部に対し、リン酸:22〜33重量部
(89%リン酸の場合:25〜36重量部)、およびモ
ノエタノールアミン:20〜28重量部、さらに第二リ
ン酸アンモニウム:7〜13重量部とした。 これらを
混合することにより消火能力の減退がなく、しかもp
H:6.0〜8.0(±0.4)の理想的な範囲内に調
整した濃縮消火液を得ることができる。 また必要に応
じてこれに界面活性剤:0.1〜9(重量部)を添加し
て消火能力の向上をはかる。
The specific component range of each composition is water:
For 32 to 44 parts by weight, phosphoric acid: 22 to 33 parts by weight (for 89% phosphoric acid: 25 to 36 parts by weight), monoethanolamine: 20 to 28 parts by weight, and ammonium diphosphate: 7 To 13 parts by weight. By mixing these, there is no decrease in fire extinguishing ability, and p
H: A concentrated fire extinguishing liquid adjusted to an ideal range of 6.0 to 8.0 (± 0.4) can be obtained. If necessary, a surfactant: 0.1 to 9 (parts by weight) may be added to improve the fire extinguishing ability.

【0012】上記した本発明における各組成の成分範囲
を特定する理由について、以下の実験例により具体的に
説明する 〔実験例1〕 (水の最低量と第二リン酸アンモニウムの最大添加量に
ついて)一般的に成分系として水、リン酸、モノエタノ
ールアミン、第二リン酸アンモニウム、の4成分系にお
いて各組成範囲を決定することは難しく、また全ての組
成について微少量から順次変化させて最適組成を求める
という段階的な実験方法では膨大な実験回数となり、最
適値を求めることがきわめて困難である。 そこで本実
験例においては、まず初期値組成系を得るために、これ
までに得られた数多くの経験に基づき以下のような組成
の調整からおこなった。
The reasons for specifying the component ranges of the respective compositions in the present invention will be specifically described with reference to the following experimental examples. Experimental Example 1 (Regarding the minimum amount of water and the maximum addition amount of diammonium phosphate) In general, it is difficult to determine each composition range in a four-component system of water, phosphoric acid, monoethanolamine, and diammonium phosphate as the component system, and it is optimal to gradually change all components in order from a small amount. The stepwise experiment method of finding the composition requires a huge number of experiments, and it is extremely difficult to find the optimum value. Therefore, in this experimental example, first, in order to obtain an initial value composition system, the following composition adjustment was performed based on many experiences obtained so far.

【0013】1)水:26重量部、リン酸(89%):
23重量部、モノエタノールアミン:19重量部からな
る組成に、第二リン酸アンモニウム:6.0重量部を添
加した組成系として 水 リン酸 MEA DAP 実験1 26 23 19 6 (MEA:モノエタノールアミン、DAP:第二リン酸アンモニウム) この実験1では第二リン酸アンモニウムの水に対する溶
解に時間がかかり、実用的ではなかったために、水に対
する溶解性を増大させるための検討をおこなった結果、
水の量としては32重量部以上必要であることが解っ
た。
1) Water: 26 parts by weight, phosphoric acid (89%):
Water phosphoric acid MEA DAP experiment 1 26 23 196 (MEA: monoethanolamine) was used as a composition system in which ammonium phosphate dibasic: 6.0 parts by weight was added to a composition consisting of 23 parts by weight and monoethanolamine: 19 parts by weight. , DAP: diammonium phosphate) In this experiment 1, the dissolution of ammonium diphosphate in water took a long time and was not practical, and as a result, a study was conducted to increase the solubility in water.
It was found that the amount of water was required to be 32 parts by weight or more.

【0014】さらにこの結果をもとに、次の調整をおこ
なった 水 リン酸 MEA DAP 実験2 30 23 19 15 この組成に基づいて濃縮消火液を試作してみたところ、
白濁状態が続いた。 そのために第二リン酸アンモニウ
ムの添加量について種々検討をした結果、13重量部以
下である必要があることが解った。 したがって以上の
結果からみて水:32重量部以上、第二リン酸アンモニ
ウム:13重量部以下であることが条件となることが明
らかとなった。
Further, based on the results, the following adjustments were made. Water phosphoric acid MEA DAP experiment 2 30 23 19 15 A concentrated fire extinguishing solution was trial-produced based on this composition.
The cloudiness continued. As a result of various studies on the addition amount of diammonium phosphate, it was found that the addition amount was required to be 13 parts by weight or less. Accordingly, it was clarified from the above results that the condition was that water: 32 parts by weight or more and diammonium phosphate: 13 parts by weight or less.

【0015】〔実験例2〕 (水の最大量とリン酸および第二リン酸アンモニウムの
最低添加量について)本実験例においては、消火性能の
確認により最適範囲を決定した。 濃度については濃縮
液を水に対して3重量部に希釈し、消火実験は日本消防
検定協会で定めるA火災模型を用いておこなった。 実
験の結果は、水単独での消火効率を1とした場合つぎの
通りであった 水 リン酸 MEA DAP 効率 実験3 44 23 19 13 1.3以上
[Experimental Example 2] (Regarding the maximum amount of water and the minimum amount of phosphoric acid and ammonium diphosphate) In this experimental example, the optimum range was determined by confirming the fire-extinguishing performance. Regarding the concentration, the concentrated liquid was diluted to 3 parts by weight with respect to water, and a fire extinguishing experiment was performed using a fire model A specified by the Japanese Fire Defense Certification Association. The results of the experiment were as follows when the fire extinguishing efficiency with water alone was 1, water phosphoric acid MEA DAP efficiency experiment 3 44 23 19 13 1.3 or more

【0016】実験3の結果によれば、水単独の場合に比
して明確な消火能力の向上がみられた。 一方さらに厳
しい条件として、第二量アンモニウムの添加量:6重量
部という低い条件での検討を予想し、次のように水を4
1重量部に減少させてさらに最適条件を検討してみた 水 リン酸 MEA DAP 効率 実験4 41 23 19 6 1.1〜1.2
According to the results of Experiment 3, the fire extinguishing ability was clearly improved as compared with the case of using water alone. On the other hand, as a more severe condition, it is anticipated that the study will be conducted under a condition where the addition amount of secondary ammonium is as low as 6 parts by weight.
Water phosphoric acid MEA DAP Efficiency Experiment 4 41 23 19 6 1.1-1.2

【0017】実験4の結果によれば、消火能力の向上が
僅かにみられるが、まだ不十分であるため、リン酸濃度
を25重量部に増量するとともに、さらに消火能力減退
が予想される高モノエタノールアミン量の状態にて次の
実験をおこなってみた 水 リン酸 MEA DAP 効率 実験5 41 25 19 6 1.1〜1.2 しかし際立った消火能力の向上が認められなかったの
で、さらに第二リン酸アンモニウムを7重量部に増量し
て実験を続けたところ、消火効率が平均で1.3以上
(水単独の場合を1として対比)の値が確認され、水単
独による場合に比して明確な消火能力の向上がみられる
ことが解った。
According to the results of Experiment 4, although the fire extinguishing ability was slightly improved, it was still insufficient, so that the phosphoric acid concentration was increased to 25 parts by weight and the fire extinguishing ability was expected to decrease further. The following experiment was carried out with the amount of monoethanolamine. Water Phosphorus MEA DAP Efficiency Experiment 5 41 25 19 6 1.1-1.2 However, since no remarkable improvement in fire extinguishing ability was not recognized, When the experiment was continued by increasing the amount of ammonium diphosphate to 7 parts by weight, the fire-extinguishing efficiency was found to be 1.3 or more on average (compared to the case of using water alone as 1). It was found that firefighting ability was clearly improved.

【0018】以上の結果からみて、水については44重
量部以下、リン酸については22重量部以上(89%リ
ン酸の場合は25〜36重量部)、さらに第二リン酸ア
ンモニウムについては7重量部以上であることが必要で
あることが明確となった。
From the above results, it is understood that 44 parts by weight or less of water, 22 parts by weight or more of phosphoric acid (25 to 36 parts by weight for 89% phosphoric acid), and 7 parts by weight of ammonium diphosphate It became clear that it was necessary to have more than one department.

【0019】〔実験例3〕 (モノエタノールアミンの最低量とリン酸の最大添加量
について)この実験では特に実使用において最も重要
な、粘性(動粘度)及びpHについての好ましい物性値
を求める観点より検討を試みた。 粘性による影響につ
いては濃縮液を水に希釈するための方式に依存している
が、装置的な要求から100cst以下である必要があ
る。 また成系としては経験的に最も高粘度と予想され
る条件により、以下の通り粘度の実験をおこなった 水 リン酸 MEA DAP 実験6 30 25 28 13
[Experimental Example 3] (Regarding the minimum amount of monoethanolamine and the maximum amount of phosphoric acid) In this experiment, viewpoints for obtaining desirable physical property values for viscosity (kinematic viscosity) and pH, which are the most important especially in actual use. I tried more. The effect of the viscosity depends on the method for diluting the concentrated liquid into water, but it needs to be 100 cst or less due to equipment requirements. In addition, under the conditions which are empirically expected to have the highest viscosity as an adult system, the viscosity experiment was carried out as follows: water phosphoric acid MEA DAP experiment 6 30 25 28 13

【0020】実験6の結果によれば、動粘度については
140と100cst±30%以上となり、実用的では
ないため、モノエタノールアミンの最適量について、さ
らなる検討をおこなった結果、100cst±30%以
下とするためのモノエタノールアミンの添加量は28重
量部以下である必要があることが解った。 さらにもっ
とも重要なpH値について、これをpH:6以上の中性
域近傍に維持することを目標とした検討をおこなった。
実験は経験的にpH値が最も低い組成系として以下の
ようにした 水 リン酸 MEA DAP 実験7 30 37 19 7
According to the results of Experiment 6, the kinematic viscosity was 140 and 100 cst ± 30% or more, which was not practical. Therefore, the optimum amount of monoethanolamine was further examined. It has been found that the amount of monoethanolamine to be added must be 28 parts by weight or less. Further, the most important pH value was examined with the aim of maintaining the pH value in the vicinity of a neutral region of pH 6 or more.
The experiment was empirically performed with the composition system having the lowest pH value as follows. Water Phosphorus MEA DAP Experiment 7 30 37 19 7

【0021】実験7の結果によれば、pH:5.4であ
ったため、安全をみてリン酸量:33重量部以下とする
とともにモノエタノールアミン:20重量部以上とする
ことにより規定のpH値に入ることが解った。 なおこ
の時のpH値はpH:6.1±0.4であった。 以上
の条件により、さらにpH値を最も高くする条件として
次の組成系による実験を試みた 水 リン酸 MEA DAP 実験8 30 28 28 13
According to the results of Experiment 7, since the pH was 5.4, the pH value was determined to be not more than 33 parts by weight of phosphoric acid and to be not less than 20 parts by weight of monoethanolamine for safety. I knew I was going. The pH value at this time was pH: 6.1 ± 0.4. Under the above conditions, an experiment with the following composition system was attempted as a condition for further increasing the pH value. Water Phosphorus MEA DAP Experiment 8 30 28 28 13

【0022】実験8の結果によれば、pH:8.1±
0.4であった。 以上の実験6〜8の結果からみて、
モノエタノールアミンの添加量下限については20重量
部以上、またリン酸の添加量上限については33重量部
以下である必要があることを確認した。 したがって実
験1〜8の結果を纏めると、本発明において求められる
組成系の好ましい成分規定範囲は、32<水<44、2
2<リン酸<33、20<MEA<28、7<DAP<
13という極めて限られた範囲内にある必要があること
が解った。
According to the result of Experiment 8, pH: 8.1 ±
0.4. From the results of Experiments 6 to 8 above,
It was confirmed that the lower limit of the addition amount of monoethanolamine had to be 20 parts by weight or more, and the upper limit of the addition amount of phosphoric acid had to be 33 parts by weight or less. Therefore, when the results of Experiments 1 to 8 are summarized, the preferable range of the specified components of the composition system required in the present invention is 32 <water <44, 2
2 <phosphoric acid <33, 20 <MEA <28, 7 <DAP <
It turns out that it needs to be within a very limited range of 13.

【0023】〔実験例4〕 (水に対する濃縮消火液の添加量と、界面活性剤の添加
量について)本実験例においては、界面活性剤の添加に
よる影響と、完成した濃縮消火液の消火能力について検
討した。 まず水単独使用の場合に比して明らかな消火
能力の向上がみられるための、水に対する濃縮消火液の
好ましい添加量についてみれば、濃縮消火液の原液組成
として 水 リン酸 MEA DAP 組 成 41 33 26 7 とし、この濃縮消火液を水100容量部に対して以下に
示す量を添加混合して消火剤とし、実際の消火実験にお
いて消火能力を検討した。
[Experimental Example 4] (Addition amount of concentrated fire extinguishing liquid to water and added amount of surfactant) In this experimental example, the effect of the addition of the surfactant and the fire extinguishing ability of the completed concentrated fire extinguishing liquid were measured. Was considered. First, regarding the preferable addition amount of the concentrated fire extinguishing solution to water, since the fire-extinguishing ability is clearly improved as compared with the case of using water alone, the composition of the concentrated fire extinguishing solution is as follows: water phosphoric acid MEA DAP composition 41 The fire extinguishing ability was determined in an actual fire extinguishing experiment by adding and mixing the concentrated fire extinguishing solution with the following amount to 100 parts by volume of water to prepare a fire extinguishing agent.

【0024】 添加量 0 0.3 0.5 1.0 消火能力 1 1〜1.1 1.1〜1.2 1.3 (なお、添加量単位は「重量部」を、また添加量:0は水だけのものの状態をあ らわす) 結果は、濃縮消火液の添加量が0.3(重量部)程度の
希釈では目立った効果がみられないが、0.5(重量
部)以上にすると、水単独使用の場合に比して明らかな
消火能力の向上がみられることが知れた。
Addition amount 0 0.3 0.5 1.0 Fire extinguishing ability 11-1.1 1.1-1.2 1.3 (The addition amount unit is "parts by weight", and the addition amount is: 0 indicates the state of only water.) As a result, no remarkable effect was observed when the concentration of the concentrated fire extinguishing solution was about 0.3 (parts by weight), but 0.5 (parts by weight) or more. Then, it was found that the fire extinguishing ability was clearly improved as compared with the case of using water alone.

【0025】つぎに界面活性剤添加による効果について
検討した。 すなわち界面活性剤を添加する濃縮消火液
の組成を次のようにし、 水 リン酸 MEA DAP 組成1 38 25 26 7 これに界面活性剤(この実験例ではシャンプー等一般的
に用いられているオバゾリンLB等を使用)を加えて濃
縮消火液とし、これを水:100容量部に対して5重量
部添加したものを用いて消火実験をおこなった結果次の
ような結果を得た。 すなわち 界面活性剤量 0.05 0.1 0.5 1.0 消火能力 1.0 1.1〜1.2 1.2 1.2〜1.3 (なおこの場合において、消火液のみの消火能力を1とした) 以上の結果からみて界面活性剤:0.1重量%以上の添
加により消火能力の向上がみられることが知れた。
Next, the effect of adding a surfactant was examined. That is, the composition of the concentrated fire extinguishing solution to which a surfactant is added is as follows: water phosphoric acid MEA DAP composition 138 25 26 7 This is added to a surfactant (obazoline LB which is generally used such as shampoo in this experimental example). Was used to obtain a concentrated fire extinguishing solution, and a fire extinguishing experiment was carried out using a solution prepared by adding 5 parts by weight to 100 parts by volume of water to obtain the following results. That is, the amount of surfactant 0.05 0.1 0.5 1.0 Fire extinguishing ability 1.0 1.1 to 1.2 1.2 1.2 to 1.3 (In this case, fire extinguishing only with the extinguishing liquid Based on the above results, it was found that the fire-extinguishing ability was improved by adding 0.1% by weight or more of the surfactant.

【0026】つぎに前記した組成1に対し、界面活性
剤:5〜12重量部の範囲で添加し、かつこの濃縮消火
液を水:100容量部に対し、1〜23重量部の範囲で
希釈したものを用いてみた。 評価方法は日本消防検定
協会の泡消火薬剤の検定細則に基づいた試験によりおこ
なった。 以下に示す試験内容は、界面活性剤の添加量
と希釈量とにより、膨張率が3倍以下で、しかも25%
還元時間が30秒以下の条件をあらわしたものである。
Next, a surfactant is added to the composition 1 in the range of 5 to 12 parts by weight, and the concentrated fire extinguishing solution is diluted in a range of 1 to 23 parts by weight with respect to 100 parts by volume of water. I tried using what was done. The evaluation method was carried out by a test based on the detailed regulations for foam extinguishing agents of the Japan Fire Service Certification Association. The test contents shown below show that the expansion rate is 3 times or less and 25% depending on the amount of surfactant added and the amount of dilution.
This represents the condition that the reduction time is 30 seconds or less.

【0027】 界面活性剤量 0.1 5 9 12 希 0.5 : ○ −− −− × 1 : −− −− ○ × 釈 5 : −− −− −− −− 21 : −− ○ ○ −− 量 23 : × −− × ×Surfactant amount 0.15991 12 Diluted 0.5: ○----X1:-----X Notation 5:--------21:---- − Quantity 23: × −− × ×

【0028】以上の結果からみて、界面活性剤の添加量
は9重量部を越えると膨張率が3倍を越え、しかも25
%還元時間が30秒を越えることになることから、界面
活性剤の添加量については9重量部以下であり、また水
に対する希釈量についても21重量部以下である必要が
あることが明らかとなった。 またこれまでの結果か
ら、水:100容量部に対する濃縮消火液の好ましい添
加量の範囲は0.5〜21重量部、界面活性剤について
は0.1〜9重量部の範囲内であることが明確となっ
た。
As can be seen from the above results, when the amount of the surfactant exceeds 9 parts by weight, the expansion coefficient exceeds 3 times, and moreover, 25%.
Since the% reduction time exceeds 30 seconds, it is clear that the amount of the surfactant added must be 9 parts by weight or less, and the amount of dilution with water must be 21 parts by weight or less. Was. From the results thus far, the preferable addition amount of the concentrated fire extinguishing liquid to 100 parts by volume of water is in the range of 0.5 to 21 parts by weight, and that of the surfactant is in the range of 0.1 to 9 parts by weight. It became clear.

【0029】〔実験例5〕 (濃縮消火液の使用法について)本願発明によって得ら
れた濃縮消火液は、一般的に水に希釈溶解させて放射使
用するが、さらに水に希釈した後、放射方法として微細
粒子を形成させて燃焼体に放射する使用方法の検討を試
みたところ次のような結果を得た。 すなわちこの実験
で使用した濃縮消火液の組成は次の組成2に示したもの
であり、水に対する希釈率については、水:100重量
部に対して濃縮消火液5重量部とした 水 リン酸 MEA DAP 組成2 32 32 21 11
[Experimental Example 5] (Method of using concentrated fire extinguishing liquid) The concentrated fire extinguishing liquid obtained by the present invention is generally used by dissolving it in water after diluting and dissolving it. As a method, the use of forming fine particles and radiating them to the combustion body was examined, and the following results were obtained. In other words, the composition of the concentrated fire extinguishing liquid used in this experiment is shown in the following composition 2. The dilution ratio with respect to water was as follows: water: 100 parts by weight; DAP composition 2 32 32 21 11

【0030】微細粒子の形成方法としては、例えば図1
に示したような加圧式液体スプレー装置が用いられる。
すなわちこれは、7.4l入りの円筒状をした圧力容
器1と、該圧力容器1内に加圧ガスを送り込むための加
圧用ガスボンべ4、および加圧された圧力容器1内の液
体を外部に向けて噴射するためのスプレーノズル9とか
ら構成され、圧力容器1内に溶液Fを5l充填し、さら
に圧力容器1内の上部空隙部2にパイプ3を介して接続
した加圧用ガスボンベ4から、途中に圧力調整器5およ
び加圧用ガスストップバルブ6を介して一定圧力のガス
を送り込んで加圧する。 加圧された溶液Fは圧力容器
1の下方部に接続されたパイプ7を通じ、途中に溶液噴
射ストップ用のバルブ8を介して先端のスプレーノズル
9より噴出される。
As a method for forming fine particles, for example, FIG.
A pressurized liquid spray device as shown in FIG.
That is, the pressure vessel 1 is a cylindrical pressure vessel 1 containing 7.4 liters, a pressurizing gas cylinder 4 for feeding a pressurized gas into the pressure vessel 1, and the liquid in the pressurized pressure vessel 1. And a spray nozzle 9 for injecting the solution F into the pressure vessel 1. The pressure vessel 1 is filled with 5 liters of the solution F, and the pressurized gas cylinder 4 connected to the upper space 2 in the pressure vessel 1 via a pipe 3. A gas at a constant pressure is sent through the pressure regulator 5 and the gas stop valve 6 for pressurization on the way to pressurize the gas. The pressurized solution F is ejected through a pipe 7 connected to the lower part of the pressure vessel 1 and a spray nozzle 9 at the tip via a valve 8 for stopping solution ejection.

【0031】この装置を用いて実験した結果を以下に示
す 圧力(Kg.f/cm2): 8 10 15 20 効率(消火液/水) : 1.3 1.3 1.6 1.8 効率は水のみの場合を1.3としている。 以上の結果
からみて圧力8Kgでは単に濃縮液の効果の範囲内に止
まっており、まだ微細化されるに至っていない。しかし
圧力をさらに上昇させるにつれて次第に微細粒子化する
とともに、効率(消火能力)が上昇することが確認され
た。
The results of experiments using this apparatus are shown below. Pressure (Kg.f / cm2): 8 10 15 20 Efficiency (fire extinguishing liquid / water): 1.3 1.3 1.6 1.8 Efficiency The case of only water is set to 1.3. Based on the above results, at a pressure of 8 kg, the concentration is merely within the range of the effect of the concentrated solution, and it has not yet been miniaturized. However, it was confirmed that as the pressure was further increased, the particles gradually became finer and the efficiency (fire-extinguishing ability) increased.

【0032】なお本発明の濃縮消火液は、上記した各基
本組成のほかに既知の各種添加剤、着色剤、界面活性剤
等の添加を妨げるものではない。
The concentrated fire extinguishing liquid of the present invention does not prevent the addition of various known additives, coloring agents, surfactants and the like in addition to the above basic compositions.

【0033】[0033]

【発明の効果】上記した各実験例による結果を総合すれ
ば、各組成範囲について次のように結論づけることがで
きる。 すなわち、本発明は、水:32〜44重量部
(89%リン酸使用の場合には、水:29〜41重量
部)に対し、リン酸:22〜33重量部(89%リン
酸:25〜36重量部)、モノエタノールアミン:20
〜28重量部、さらに第二リン酸アンモニウム:7〜1
3重量部を添加混合してなる濃縮消火液であるから保管
に場所をとらず運搬も容易であり、また物性値(pH)
が中性となり、その結果長期保存による材料の腐食等経
時変化がなく、安定化が著しく向上し、また水に対する
溶解性がよく、少ない水で効率のよい消火作業の実施を
おこなうことができる。
By summing up the results of the above-described experimental examples, the following conclusions can be made for each composition range. That is, the present invention relates to water: 32 to 44 parts by weight (when using 89% phosphoric acid, water: 29 to 41 parts by weight), and phosphoric acid: 22 to 33 parts by weight (89% phosphoric acid: 25%). To 36 parts by weight), monoethanolamine: 20
~ 28 parts by weight, further ammonium diphosphate: 7-1
Since it is a concentrated fire extinguishing liquid made by adding and mixing 3 parts by weight, it can be easily transported without taking up space, and its physical property value (pH)
Is neutral, and as a result, there is no change with time such as corrosion of the material due to long-term storage, the stability is remarkably improved, the solubility in water is good, and an efficient fire extinguishing operation can be performed with little water.

【0034】また上記した組成に対し、必要に応じて界
面活性剤:0.1〜9重量部添加混合した濃縮消火液と
すると、膨張率が3倍以内で、しかも25%還元時間が
30秒以内となり実使用に適する。 さらに上記組成の
濃縮消火液を、100容量部の水に対して0.5〜21
重量部添加し、希釈溶解させて使用すると、同じく膨張
率が3倍以下で、しかも25%還元率30秒以下という
日本消防検定協会による低発泡試験基準に合致し、少な
い水で効率のよい消火活動の実施が可能となるととも
に、水損を著しく減少させ、また起泡率が少ないので消
火後の残留消火液処理を容易にすることができる。
When the concentrated fire extinguishing solution is prepared by adding 0.1 to 9 parts by weight of a surfactant, if necessary, to the above composition, the expansion coefficient is within 3 times, and the 25% reduction time is 30 seconds. Suitable for actual use. Further, the concentrated fire extinguishing solution having the above composition was added to 0.5 to 21 parts per 100 parts by volume of water.
When added in parts by weight, diluted and dissolved, when used, the expansion rate is 3 times or less, and the 25% reduction rate is 30 seconds or less. Activities can be carried out, water damage is significantly reduced, and the foaming rate is low, so that the treatment of the residual fire extinguishing liquid after fire extinguishing can be facilitated.

【0035】さらに上記組成の濃縮消火液を、水に希釈
して混合して消火剤として溶液化させるとともに、これ
を微粒子状に放射して用いるようにした場合において
は、消火効率をさらに向上させることができる。
Further, when the concentrated fire extinguishing liquid having the above composition is diluted with water and mixed to form a solution as a fire extinguishing agent, the fire extinguishing efficiency is further improved when the fire extinguishing agent is used by radiating it in the form of fine particles. be able to.

【図面の簡単な説明】[Brief description of the drawings]

【図1】加圧式液体スプレー装置の概略図。FIG. 1 is a schematic diagram of a pressurized liquid spray device.

【符号の説明】[Explanation of symbols]

1 圧力容器 2 空隙部 3 パイプ 4 加圧用ガスボンベ 5 圧力調整器 6 加圧用ガスストップバルブ 7 パイプ 8 溶液噴射ストップ用のバルブ 9 スプレーノズル F 溶液 DESCRIPTION OF SYMBOLS 1 Pressure container 2 Void 3 Pipe 4 Gas cylinder for pressurization 5 Pressure regulator 6 Gas stop valve for pressurization 7 Pipe 8 Valve for stopping solution injection 9 Spray nozzle F Solution

フロントページの続き (72)発明者 高橋 宏幸 神奈川県茅ヶ崎市下町屋一丁目1番1号 宮田工業株式会社内Continuation of front page (72) Inventor Hiroyuki Takahashi 1-1-1, Shimomachiya, Chigasaki-shi, Kanagawa Miyata Kogyo Co., Ltd.

Claims (5)

【特許請求の範囲】[Claims] 【請求項1】32〜44重量部の水に対し、リン酸22
〜33重量部とモノエタノールアミン20〜28重量部
を添加して中性となし、さらに第二リン酸アンモニウム
7〜13重量部を添加してなる濃縮消火液。
1. A phosphoric acid 22 to 32 to 44 parts by weight of water
A concentrated fire-extinguishing liquid, which is made neutral by adding to 33 parts by weight of monoethanolamine and 20 to 28 parts by weight of monoethanolamine, and further adding 7 to 13 parts by weight of ammonium diphosphate.
【請求項2】32〜44重量部の水に対し、リン酸22
〜33重量部、モノエタノールアミン20〜28重量
部、第二リン酸アンモニウム7〜13重量部を添加する
とともに、さらに界面活性剤0.1〜9重量部を添加し
てなる濃縮消火液。
2. Phosphoric acid 22 to 32 to 44 parts by weight of water
A concentrated fire-extinguishing liquid comprising adding to 33 parts by weight, 20 to 28 parts by weight of monoethanolamine, and 7 to 13 parts by weight of ammonium diphosphate, and further adding 0.1 to 9 parts by weight of a surfactant.
【請求項3】32〜44重量部の水に対し、リン酸22
〜33重量部とモノエタノールアミン20〜28重量部
を添加して中性となし、さらに第二リン酸アンモニウム
7〜13重量部を添加してなる濃縮消火液を、100容
量部の水に対して0.5〜21重量部添加して使用する
ようにした濃縮消火液の使用法。
3. Phosphoric acid 22 to 32 to 44 parts by weight of water
To 33 parts by weight and 20 to 28 parts by weight of monoethanolamine to make it neutral, and further add 7 to 13 parts by weight of diammonium phosphate to a concentrated fire extinguishing solution with respect to 100 parts by volume of water. A method for using a concentrated fire extinguishing liquid, which is added and used in an amount of 0.5 to 21 parts by weight.
【請求項4】32〜44重量部の水に対し、リン酸22
〜33重量部、モノエタノールアミン20〜28重量
部、第二リン酸アンモニウム7〜13重量部を添加する
とともに、さらに界面活性剤0.1〜9重量部を添加し
てなる濃縮消火液を、100容量部の水に対して0.5
〜21重量部添加して使用するようにした濃縮消火液の
使用法。
4. Phosphoric acid 22 to 32 to 44 parts by weight of water
To 33 parts by weight, 20 to 28 parts by weight of monoethanolamine, 7 to 13 parts by weight of ammonium diphosphate, and 0.1 to 9 parts by weight of a surfactant, 0.5 for 100 parts by volume of water
How to use a concentrated fire extinguishing liquid which is used by adding to 21 parts by weight.
【請求項5】32〜44重量部の水に対し、リン酸22
〜33重量部とモノエタノールアミン20〜28重量部
を添加して中性となし、さらに第二リン酸アンモニウム
7〜13重量部を添加してなる濃縮消火液を水に添加混
合するとともに、これを微粒子状に放射して用いるよう
にした濃縮消火液の使用法。
5. Phosphoric acid 22 to 32 to 44 parts by weight of water
To 33 parts by weight and 20 to 28 parts by weight of monoethanolamine to make the mixture neutral, and further add 7 to 13 parts by weight of ammonium diphosphate to a concentrated fire extinguishing solution, and mix with water. The use of concentrated fire extinguishing liquid, which emits fine particles in the form of fine particles.
JP30981897A 1997-10-24 1997-10-24 Concentrated fire extinguishing fluid and its use Expired - Lifetime JP3404454B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP30981897A JP3404454B2 (en) 1997-10-24 1997-10-24 Concentrated fire extinguishing fluid and its use

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP30981897A JP3404454B2 (en) 1997-10-24 1997-10-24 Concentrated fire extinguishing fluid and its use

Publications (2)

Publication Number Publication Date
JPH11128389A true JPH11128389A (en) 1999-05-18
JP3404454B2 JP3404454B2 (en) 2003-05-06

Family

ID=17997631

Family Applications (1)

Application Number Title Priority Date Filing Date
JP30981897A Expired - Lifetime JP3404454B2 (en) 1997-10-24 1997-10-24 Concentrated fire extinguishing fluid and its use

Country Status (1)

Country Link
JP (1) JP3404454B2 (en)

Also Published As

Publication number Publication date
JP3404454B2 (en) 2003-05-06

Similar Documents

Publication Publication Date Title
US3258423A (en) Method of extinguishing liquid hydrocarbon fires
US5862867A (en) Gas-liquid mixture as well as unit and method for the use thereof
WO2002064217A1 (en) Method and appliance for extinguishing fire
CN106975192B (en) A kind of transformer oil fire safety evaluating extinguishing chemical and preparation method thereof
EP2764895B1 (en) Fire-extinguishing binary chemical condensation composition
US4398605A (en) Fire extinguishing composition and method
KR20040068144A (en) Fluorosurfactant-free foam fire-extinguisher
US20230302315A1 (en) Apparatus for diluting and applying firefighting chemical
CN106362344A (en) Cold-resistant highly-efficient environment-friendly water-based fire-extinguishing agent and preparation method thereof
US6495056B2 (en) Protein foam fire-extinguishing chemical and an aqueous foam solution
US6776920B1 (en) Heat-absorbing gel material
US6051154A (en) Fire fighting foams utilizing saponins
RU2418611C1 (en) Fire-extinguishing composition for fire extinguishing
CN209392636U (en) A kind of high expansion foam fire-extinguishing system
JPH11128389A (en) Concentrated fire extinguishing liquid and its use method
US20030164465A1 (en) Method and apparatus for producing foam
JPH11155977A (en) Concentrated extinguishing liquid and use thereof
US6814880B1 (en) Water based liquid foam extinguishing formulation
JP2004208831A (en) Aqueous fire extinguishing agent
CN221286706U (en) Fluidized solid foam fire extinguishing agent device
RU2223804C1 (en) Multipurpose aqueous fire-extinguishing composition
US11452896B1 (en) Fire fighting agent compositions
AU2011355588A1 (en) Fire fighting water additive
JP3186022B2 (en) Concentrated fire extinguishing liquid and method of using the same
CN117531149A (en) Fluidized solid foam fire extinguishing agent device and fire extinguishing method

Legal Events

Date Code Title Description
R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20080229

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090228

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090228

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20100228

Year of fee payment: 7

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20110228

Year of fee payment: 8

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20120229

Year of fee payment: 9

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20130228

Year of fee payment: 10

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140228

Year of fee payment: 11

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

EXPY Cancellation because of completion of term