JPH0978270A - Rust preventive and rust preventing method - Google Patents
Rust preventive and rust preventing methodInfo
- Publication number
- JPH0978270A JPH0978270A JP7234890A JP23489095A JPH0978270A JP H0978270 A JPH0978270 A JP H0978270A JP 7234890 A JP7234890 A JP 7234890A JP 23489095 A JP23489095 A JP 23489095A JP H0978270 A JPH0978270 A JP H0978270A
- Authority
- JP
- Japan
- Prior art keywords
- rust
- acid
- phosphoric acid
- iron
- metal material
- 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.)
- Pending
Links
Landscapes
- Chemical Treatment Of Metals (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、表面に錆を有する
金属材料の除錆剤および除錆方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rust removing agent and a rust removing method for a metal material having rust on its surface.
【０００２】[0002]
【従来の技術】従来、建設現場における鉄筋コンクリー
ト構造の建造作業においては、コンクリート打設前に処
置する鉄筋およびスチール製コンクリートパネルの赤錆
の除去および防錆が大きな課題となっている。このた
め、特に鉄筋に塗布する除錆剤として「燐酸と塩酸」を
主成分とする液剤が用いられている。2. Description of the Related Art Conventionally, in the construction work of a reinforced concrete structure at a construction site, removal of red rust and prevention of rust of a reinforcing bar and a steel concrete panel to be treated before placing concrete have been a major problem. For this reason, a liquid agent containing "phosphoric acid and hydrochloric acid" as main components is used as a rust remover particularly applied to reinforcing bars.
【０００３】しかし、この液剤を用いる場合、主成分中
の塩酸化合物は吸湿性で、除錆処理後に新たな錆を呼び
やすいため、除錆処理後に直ちに鉄筋に防錆剤（以下、
オイルと表示する）を塗り、二次錆の発生を防止する処
置がとられていた（除錆処理後に二次錆が発生しない前
にコンクリートの打設をすればよいが、数日の時間をお
いて打設することがあるため、オイル塗布をしてい
る）。However, when this liquid agent is used, the hydrochloric acid compound in the main component is hygroscopic, and it is easy to call new rust after the rust removal treatment.
It was painted with oil) and measures were taken to prevent the occurrence of secondary rust. (It is sufficient to place concrete before secondary rust does not occur after the rust removal treatment, but it takes several days. Since it may be placed in the place, oil is applied).
【０００４】しかしながら、オイル付着のままの鉄筋を
使用しそれに生コンクリートを打設すると、鉄筋とコン
クリートとの接着性が不十分になるため、生コンクリー
ト打設前には必ず溶剤等によりオイル除去を行ってい
る。これが建設効率を低下し、コスト上昇の原因になっ
ていた。[0004] However, when the reinforcing steel with the oil adhered is used and the fresh concrete is poured into it, the adhesion between the reinforcing steel and the concrete becomes insufficient. Therefore, the oil must be removed by a solvent before pouring the fresh concrete. Is going. This reduced construction efficiency and increased costs.
【０００５】[0005]
【発明が解決しようとする課題】本発明の目的は、除錆
処理後に数日間放置しても二次錆が発生せず、しかもオ
イル塗布をしなくても済む除錆剤および除錆方法を提供
することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a rust remover and a rust remover which do not cause secondary rust even if left for several days after rust removal and do not require oil application. To provide.
【０００６】[0006]
【課題を解決するための手段】本発明の除錆剤は、燐酸
を主成分とし、該燐酸に少なくとも有機酸および界面活
性剤を配合したことを特徴とする。また、本発明の除錆
方法は、表面に酸化鉄錆を有する金属材料に、燐酸を主
成分とし、該燐酸に少なくとも有機酸および界面活性剤
を配合した液状組成物を付着して前記金属材料の表面に
燐酸鉄IIの被膜を形成させ、該金属材料の表面から錆を
脱落させるか又は、このように錆を脱落させた後、前記
燐酸鉄IIに亜硝酸ソーダを反応させて該燐酸鉄IIを亜硝
酸鉄に変換することを特徴とする。The rust remover of the present invention is characterized by containing phosphoric acid as a main component and at least an organic acid and a surfactant being mixed with the phosphoric acid. Further, the rust removal method of the present invention comprises depositing a liquid composition containing phosphoric acid as a main component, and at least an organic acid and a surfactant in the phosphoric acid, on a metal material having iron oxide rust on the surface thereof. The iron phosphate II film is formed on the surface of the iron phosphate to remove rust from the surface of the metal material, or after the rust is removed in this manner, the iron phosphate II is reacted with sodium nitrite to remove the iron phosphate. It is characterized by converting II into iron nitrite.
【０００７】[0007]
【発明の実施の形態】以下、本発明の構成につき詳しく
説明する。 本発明の除錆剤は、燐酸を主成分とし、該燐酸に少
なくとも有機酸および界面活性剤を配合して構成されて
いる。さらに好ましくはこれらに水を加えた液状組成物
とするのがよい。DETAILED DESCRIPTION OF THE INVENTION The constitution of the present invention will be described in detail below. The rust remover of the present invention comprises phosphoric acid as a main component, and at least an organic acid and a surfactant are mixed with the phosphoric acid. More preferably, a liquid composition is prepared by adding water to these.
【０００８】燐酸としては、工業用燐酸を用いることが
できる。有機酸としては、例えば、モノクロル酢酸、ジ
クロル酢酸、パラトルエンスルホン酸などの電離恒数の
大きいものを用いるのがよい。酢酸も使用することがで
きるが、酢酸は臭気の発生が強いため好ましくない。界
面活性剤は、除錆剤の金属材料表面に対する展開作用を
高める機能を果たすものであって、カチオン系界面活性
剤およびアニオン系界面活性剤のいずれでもよく、これ
らは一般に市販されているものを使用することができ
る。通常はカチオン系界面活性剤のみの添加で十分な展
開性を確保することができるが、水の配合割合が高い場
合にはアニオン系界面活性剤を併用するのが望ましい。As phosphoric acid, industrial phosphoric acid can be used. As the organic acid, for example, those having a large ionization constant such as monochloroacetic acid, dichloroacetic acid, and paratoluenesulfonic acid are preferably used. Acetic acid can also be used, but acetic acid is not preferred because it produces a strong odor. The surfactant has a function of enhancing the spreading action of the rust remover on the surface of the metal material, and may be either a cationic surfactant or an anionic surfactant, which are commercially available products. Can be used. Usually, sufficient developability can be ensured by adding only the cationic surfactant, but when the mixing ratio of water is high, it is desirable to use the anionic surfactant together.
【０００９】これらの配合割合は、特に限定されるもの
ではないが、燐酸３５〜８０重量％、有機酸１０〜５５
重量％、界面活性剤０．５〜２重量％にするのがよい。
なお、必要に応じて、塩酸を少量配合して（２重量％以
内）、燐酸に依る作用の活性化を図ることもできる。 つぎに除錆方法について説明する。The mixing ratio of these is not particularly limited, but 35-80% by weight of phosphoric acid and 10-55 of organic acid.
It is preferable that the content is 0.5% by weight and the surfactant is 0.5 to 2% by weight.
If necessary, a small amount of hydrochloric acid may be added (within 2% by weight) to activate the action of phosphoric acid. Next, the rust removal method will be described.
【００１０】本発明の除錆剤は、特に鉄および銅に対す
る除錆に有効であるが、表面に酸化鉄錆を有する金属材
料（鉄材料）に適用する場合に優れた効果を発揮する。
表面に酸化鉄錆を有する金属材料を処理した場合は、こ
の金属材料の表面に燐酸鉄IIの被膜を形成せしめ、金属
材料の表面から錆を脱落させる。または燐酸鉄IIの被膜
を形成せしめた後、この燐酸鉄IIに亜硝酸ソーダを反応
させて、前記金属材料の表面に、酸化に対し安定な亜硝
酸鉄を形成させる。The rust remover of the present invention is particularly effective for rust removal on iron and copper, but exhibits excellent effects when applied to a metal material (iron material) having iron oxide rust on the surface.
When a metal material having iron oxide rust on the surface is treated, a film of iron phosphate II is formed on the surface of the metal material to remove rust from the surface of the metal material. Alternatively, after forming a film of iron phosphate II, this iron phosphate II is reacted with sodium nitrite to form oxidation-stable iron nitrite on the surface of the metal material.
【００１１】本発明の除錆剤は、建設現場において生コ
ンクリート打設用の鉄筋の除錆をする場合に極めて有効
である。鉄筋を上記除錆剤に浸漬するか、または上記除
錆剤をこの鉄筋の表面に塗布することにより、除錆剤は
鉄筋の表面に速やかに浸透し、燐酸成分が鉄と反応して
燐酸鉄II [ Fe2 ( PO4 )2 ] を形成する。そして、鉄筋
の表面を覆う赤錆 ( Fe2 Ｏ3 ) はきわめてポーラスで
かつもろく、生成する燐酸鉄IIは赤錆の内部に大きなボ
リュームを形成することになるため、赤錆は効率的に鉄
筋の表面から脱落する。The rust remover of the present invention is extremely effective in removing rust from a reinforcing bar for placing fresh concrete at a construction site. By immersing the rebar in the above rust remover or applying the above rust remover to the surface of this rebar, the rust remover quickly permeates the surface of the rebar, and the phosphoric acid component reacts with iron to cause iron phosphate. II [Fe 2 (PO 4 ) 2 ] is formed. The red rust (Fe 2 O 3 ) covering the surface of the rebar is extremely porous and brittle, and the generated iron phosphate II forms a large volume inside the red rust. take off.
【００１２】また、塗布の代わりに鉄筋を除錆剤中に浸
漬した場合には、脱落した酸化鉄は除錆剤中の過剰な燐
酸と反応して消色溶解する。したがって、除錆剤を満た
した液槽中で鉄筋等を処理する場合には、除錆剤中へ脱
落し沈降した赤錆を、できるだけ速やかに槽外へ排除す
ることが、燐酸の消耗を防止できるので望ましいことで
ある。When the reinforcing bars are immersed in a rust remover instead of coating, the iron oxide that has fallen off reacts with the excess phosphoric acid in the rust remover to dissolve the color. Therefore, in the case of processing rebar and the like in a liquid tank filled with a rust remover, it is possible to prevent the consumption of phosphoric acid by removing the red rust that has fallen into the rust remover and settled out of the tank as quickly as possible. So it is desirable.
【００１３】このようにして、鉄筋の表面に赤錆に代わ
り形成された燐酸鉄IIの被膜は、鉄筋表面の酸化を防止
する機能を有しているが、過剰の酸分が生コンクリート
のアルカリ性分を部分的に消費してしまうため、除錆処
理後、亜硝酸ソーダ水溶液に依る処理を行わない場合に
は除錆処理面が乾かないうちに水洗することが望まし
い。Thus, the iron phosphate II coating formed on the surface of the reinforcing bar in place of red rust has a function of preventing the oxidation of the surface of the reinforcing bar. After the rust removal treatment, it is preferable to wash the rust-treated surface with water before the rust-treated surface is dried, if the treatment with the sodium nitrite aqueous solution is not performed after the rust removal treatment.
【００１４】本発明において、好ましくは、上記のよう
に金属材料を除錆剤で処理した後、さらに亜硝酸ソーダ
処理するとよい。この亜硝酸ソーダ処理は、上記のよう
にして表面に形成させた燐酸鉄IIの被膜を亜硝酸ソーダ
と還元反応させて、燐酸鉄IIの酸素２個を置換し、より
酸化に対し安定な亜硝酸鉄誘導体の被膜を形成すること
による。この処理に使用する亜硝酸ソーダとしては、１
５〜３０％亜硝酸ソーダ水溶液にするとよい。さらに好
ましくは、２５〜４０℃の温度下に於いてこの水溶液を
塗布するかこの水溶液浸漬するとよい。In the present invention, preferably, the metal material is treated with a rust remover as described above, and then treated with sodium nitrite. In this sodium nitrite treatment, the iron phosphate II film formed on the surface as described above is subjected to a reduction reaction with sodium nitrite to replace two oxygen atoms in iron phosphate II, which is more stable to oxidation. By forming a film of an iron nitrate derivative. The sodium nitrite used for this treatment is 1
It is recommended to use a 5 to 30% sodium nitrite aqueous solution. More preferably, the aqueous solution is applied or immersed in the aqueous solution at a temperature of 25 to 40 ° C.
【００１５】この亜硝酸鉄誘導体の被膜で表面が覆われ
た鉄筋は、直接の雨露を防げば、オイルを塗布すること
なく、数日間〜数か月間の長期間に亙って大気中に放置
しても、二次錆を発生することがなく、これをそのまま
配筋することができる。すなわち、従来の除錆剤で処理
する場合のようにオイルの除去といった複雑かつ非健康
的な後工程を必要とすることなく、直接鉄筋に対し生コ
ンクリートの打設作業を行うことができ、打設された生
コンクリートの鉄筋に対する接合性も良好である。した
がって、建設効率が向上し、さらには低コスト化が図れ
るという利点が得られる。The rebar whose surface is covered with the iron nitrite derivative film is left in the atmosphere for a long period of several days to several months without applying oil if direct rain dew is prevented. However, secondary rust does not occur and this can be reinforced as it is. That is, it is possible to directly perform the placing work of the ready-mixed concrete on the rebar without the need for complicated and unhealthy post-process such as oil removal as in the case of treating with the conventional rust remover. The bondability of the ready-mixed concrete to the reinforcing bars is also good. Therefore, there is an advantage that the construction efficiency is improved and the cost can be reduced.
【００１６】以上説明したように本発明によれば、鉄筋
などの金属材料の表面の除錆機能がすぐれると共に、二
次錆が発生せず、しかもオイルを使用する必要がない。
なお、上記においては、生コンクリート打設用の鉄筋の
除錆につき説明したが、本発明の除錆剤及び除錆方法
は、スチール製コンクリートパネル、古鋼材、ネジ、釘
などの金属材料に対しても適用することができる。本発
明の除錆剤は、アルミニウム材、亜鉛メッキ鋼板等には
使用できない。As described above, according to the present invention, the function of removing rust on the surface of a metal material such as a reinforcing bar is excellent, secondary rust does not occur, and it is not necessary to use oil.
In the above, the rust removal of the reinforcing bars for pouring fresh concrete was described, but the rust remover and rust removal method of the present invention are for steel concrete panels, old steel materials, screws, and metal materials such as nails. Can also be applied. The rust remover of the present invention cannot be used for aluminum materials, galvanized steel sheets and the like.
【００１７】[0017]
実施例１ 下記の配合内容の除錆剤を調製した。配合内容 ８５％工業用燐酸 ７６重量％ モノクロル酢酸 １１重量％ 水 １２重量％ カチオン系界面活性剤 * １重量％ 注） *日本乳化剤（株）製 ニューコール 1305 。Example 1 A rust remover having the following formulation was prepared. Blend content 85% Industrial phosphoric acid 76% by weight Monochloroacetic acid 11% by weight Water 12% by weight Cationic surfactant * 1% by weight Note) * Newcol 1305 manufactured by Nippon Emulsifier Co., Ltd.
【００１８】この除錆剤を満たした液槽中に、表面に赤
錆を生じた鉄筋（直径２０mm) を室温で浸漬したとこ
ろ、５分間後に表面の赤錆が除錆剤中に脱落沈降したの
で、この赤錆を槽外へ取出しつつ、さらに３分間浸漬
し、鉄筋の表面に燐酸鉄II被膜を形成せしめた。When a rebar (diameter 20 mm) having red rust on the surface was immersed at room temperature in a liquid tank filled with this rust remover, the red rust on the surface dropped and settled in the rust remover after 5 minutes. The red rust was taken out of the bath and immersed for another 3 minutes to form an iron phosphate II coating on the surface of the reinforcing bar.
【００１９】この処理を施した鉄筋を槽外へ取出し、十
分に水洗した後、オイルを塗布することなく、そのまま
屋根付き屋外に１０日間放置したが、鉄筋表面には二次
錆の発生が全く認められなかった。なお、この放置後の
鉄筋を用い、生コンクリートを打設したことろ、鉄筋と
硬化したコンクリートとの接合性はきわめてすぐれてお
り、引抜き試験の値も良好であった。The rebar treated in this way was taken out of the tank, washed thoroughly with water, and then left as it was for 10 days outdoors with a roof without applying oil, but no secondary rust was generated on the rebar surface. I was not able to admit. It should be noted that, by laying fresh concrete using the rebar after the standing, the bondability between the rebar and the hardened concrete was extremely excellent, and the value of the pull-out test was also good.
【００２０】実施例２ 実施例１におけると同様に処理して表面に燐酸鉄IIの被
膜を形成せしめた鉄筋を、水洗することなく、２０％亜
硝酸ソーダ水溶液に室温で２分間浸漬し、還元反応させ
ることにより、鉄筋表面に亜硝酸鉄誘導体の被膜を形成
せしめた。この処理を施した鉄筋を槽外へ取出し、十分
に液切りした後、オイルを塗布することなく、そのまま
屋根付き屋外に４か月放置したが、鉄筋表面には二次錆
の発生が全く認められなかった。また、この放置中の鉄
筋を用い配筋し、生コンクリートを打設したことろ、鉄
筋と硬化したコンクリートとの接合性はきわめてすぐれ
ており、引抜き試験の値も良好であった。Example 2 Reinforcing bars, which had been treated in the same manner as in Example 1 and had a coating of iron phosphate II formed on the surface thereof, were immersed in a 20% aqueous sodium nitrite solution at room temperature for 2 minutes without being washed, and then reduced. By reacting, a coating of an iron nitrite derivative was formed on the surface of the reinforcing bar. After taking this treatment out of the tank and draining it sufficiently, it was left for 4 months outdoors with a roof without applying oil, but secondary rust was found at all on the surface of the reinforcement. I couldn't do it. Further, by arranging the left-standing reinforcing bars and placing fresh concrete, the bondability between the reinforcing bars and the hardened concrete was very good, and the pull-out test value was also good.
【００２１】実施例３ 下記の配合内容の除錆剤を調製した。配合内容 ８５％工業用燐酸 ５４重量％ ｐ−トルエンスルフォン酸 １１重量％ 水 ３０重量％ カチオン系界面活性剤 *1 １重量％ ３５％塩酸 １重量％ アニオン系界面活性剤 *2 １重量％ 高分子多糖類 ２重量％ 注） *1 日本乳化剤（株）製 ニューコール。*2 日本乳化剤（株）製 ミネマム。Example 3 A rust remover having the following formulation was prepared. Blend content 85% Industrial phosphoric acid 54% by weight p-toluenesulfonic acid 11% by weight Water 30% by weight Cationic surfactant * 1 1% by weight 35% Hydrochloric acid 1% by weight Anionic surfactant * 2 1% by weight Polymer Polysaccharide 2% by weight Note) * 1 Newcol manufactured by Nippon Emulsifier Co., Ltd. * 2 Minemum manufactured by Nippon Emulsifier Co., Ltd.
【００２２】この除錆剤を赤錆を生じた大型屋外ホッパ
ー（直径３mm、高さ５ｍ）に塗布し、５分後、ジエット
水で洗浄し、これをもう一度繰り返し、除錆処理を行っ
た。これは、深錆の形成が進行し、一度で除錆しきれな
かったためである。最後に亜硝酸ソーダ水溶液を反応さ
せ、十分に乾燥した面に０．２mm厚に屋外塗料を塗装し
た。This derusting agent was applied to a large outdoor hopper (diameter: 3 mm, height: 5 m) that had red rust, and after 5 minutes, it was washed with jet water and this was repeated once again to derusting. This is because the formation of deep rust progressed and the rust could not be removed at once. Finally, an aqueous solution of sodium nitrite was reacted, and a 0.2 mm-thick outdoor paint was applied to the sufficiently dried surface.
【００２３】このペンキ塗布面は、塗布後１年経過後に
おいて表面に錆を発生することがなく、かつペンキの剥
離も全く認められないものであった。 実施例４ 実施例３の配合液は、調合攪拌に依り実施例１、２の配
合液よりも２５〜３５％増粘する。したがって、縦壁面
の除錆に対してはすこぶる好都合である。バチストタン
クの壁面は、鉄錆の上に油膜が形成されており、通常の
従来型水性除錆剤は油膜が存在するために効果が期待で
きなかったため総て研削に頼るほかなかった。当該配合
液は、縦壁面であっても液がゆるやかにしか降下しない
ため、油膜を乳化破壊し、燐酸組成分が二次的に除錆作
用をもたらすため作業工程数を増すことなく除錆が可能
である。除錆後の処理は、一般除錆液と変わらない。The paint-applied surface was free from rust and no peeling of the paint after one year from the application. Example 4 The compounded liquid of Example 3 thickens 25 to 35% more than the compounded liquids of Examples 1 and 2 due to mixing and stirring. Therefore, it is very convenient for the rust removal of the vertical wall surface. Since the oil film was formed on the iron rust on the wall surface of the Batist tank, the conventional conventional water-based rust remover could not be expected to be effective because of the oil film present, so all that had to be done was grinding. Even if the compounded liquid is on the vertical wall surface, the liquid drops only slowly, so that the oil film is emulsified and destroyed, and the phosphoric acid composition secondarily causes the rusting action, so that the rusting can be performed without increasing the number of working steps. It is possible. Treatment after rust removal is no different from general rust remover.
【００２４】[0024]
【発明の効果】以上説明したように、本発明の除錆剤お
よび除錆方法によれば、次のようなすぐれた効果が得ら
れる。 （1) 処理後の金属材料にオイルを塗布することなく長
期間放置しても、二次錆を発生することがない。As described above, according to the rust remover and the rust removing method of the present invention, the following excellent effects can be obtained. (1) Secondary rust does not occur even if the treated metal material is left for a long time without applying oil.
【００２５】(2) 除錆剤で処理した後、亜硝酸ソーダ
で処理するようにすれば、オイルを塗布せずに長期間放
置しても二次錆を発生しない効果をさらに向上できる。 (3) 主成分が燐酸であるため、使用済みの廃液の処理
を容易かつ無害に行うことができる。 (4) 塩酸を配合する場合であってもその添加量がきめ
て少量であるため、塩酸の臭気が発生して周辺設備の腐
食や作業環境の悪化を招くことがない。(2) By treating with a rust remover and then with sodium nitrite, the effect of not generating secondary rust even when left for a long time without applying oil can be further improved. (3) Since the main component is phosphoric acid, used waste liquid can be treated easily and harmlessly. (4) Even when hydrochloric acid is added, since the addition amount is extremely small, the odor of hydrochloric acid will not be generated and will not cause corrosion of peripheral equipment and deterioration of working environment.
Claims (6)
有機酸および界面活性剤を配合した除錆剤。1. A rust remover comprising phosphoric acid as a main component, wherein the phosphoric acid is mixed with at least an organic acid and a surfactant.
ル酢酸、およびパラトルエンスルホン酸から選ばれた少
なくとも１種である請求項１に記載の除錆剤。2. The rust remover according to claim 1, wherein the organic acid is at least one selected from monochloroacetic acid, dichloroacetic acid, and paratoluenesulfonic acid.
酸を主成分とし、該燐酸に少なくとも有機酸および界面
活性剤を配合した液状組成物を付着して前記金属材料の
表面に燐酸鉄IIの被膜を形成させ、該金属材料の表面か
ら錆を脱落させる除錆方法。3. A metal composition having iron oxide rust on the surface thereof, a liquid composition containing phosphoric acid as a main component, and at least an organic acid and a surfactant mixed with the phosphoric acid, is adhered to the surface of the metal material to obtain iron phosphate. A rust removal method of forming a film of II and removing rust from the surface of the metal material.
酸を主成分とし、該燐酸に少なくとも有機酸および界面
活性剤を配合した液状組成物を付着して前記金属材料の
表面に燐酸鉄IIの被膜を形成させ、該金属材料の表面か
ら錆を脱落させた後、前記燐酸鉄IIに亜硝酸ソーダを反
応させて該燐酸鉄IIを亜硝酸鉄に変換する除錆方法。4. A metal composition having iron oxide rust on the surface thereof, a liquid composition containing phosphoric acid as a main component, and at least an organic acid and a surfactant mixed in the phosphoric acid is adhered to the surface of the metal material to form iron phosphate. A rust removal method of forming a coating film of II, removing rust from the surface of the metal material, and then reacting the iron phosphate II with sodium nitrite to convert the iron phosphate II into iron nitrite.
ル酢酸、およびパラトルエンスルホン酸から選ばれた少
なくとも１種である請求項３又は４に記載の除錆方法。5. The method for removing rust according to claim 3, wherein the organic acid is at least one selected from monochloroacetic acid, dichloroacetic acid, and paratoluenesulfonic acid.
筋、スチール製コンクリートパネル、ネジ、および釘か
ら選ばれた１種のものである請求項３又は４に記載の除
錆方法。6. The method of removing rust according to claim 3, wherein the metal material is one selected from a reinforcing bar for pouring concrete, a steel concrete panel, a screw, and a nail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7234890A JPH0978270A (en) | 1995-09-13 | 1995-09-13 | Rust preventive and rust preventing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7234890A JPH0978270A (en) | 1995-09-13 | 1995-09-13 | Rust preventive and rust preventing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0978270A true JPH0978270A (en) | 1997-03-25 |
Family
ID=16977927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7234890A Pending JPH0978270A (en) | 1995-09-13 | 1995-09-13 | Rust preventive and rust preventing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0978270A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006169634A (en) * | 2004-12-15 | 2006-06-29 | Samsung Electro Mech Co Ltd | Surface treatment method for nickel particle using acid solution |
| CN1297646C (en) * | 2003-06-25 | 2007-01-31 | 蓝星清洗工程有限公司 | Neutral deoiling derusting cleaning agent |
| CN1297640C (en) * | 2003-06-25 | 2007-01-31 | 蓝星清洗工程有限公司 | Three-in-one cleaning agent |
| CN104278261A (en) * | 2013-07-12 | 2015-01-14 | 王恩栋 | Environment-friendly type phosphate concentrated liquor for removing rust and iron oxide scales and phosphating and application of environment-friendly type phosphate concentrated liquor |
-
1995
- 1995-09-13 JP JP7234890A patent/JPH0978270A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1297646C (en) * | 2003-06-25 | 2007-01-31 | 蓝星清洗工程有限公司 | Neutral deoiling derusting cleaning agent |
| CN1297640C (en) * | 2003-06-25 | 2007-01-31 | 蓝星清洗工程有限公司 | Three-in-one cleaning agent |
| JP2006169634A (en) * | 2004-12-15 | 2006-06-29 | Samsung Electro Mech Co Ltd | Surface treatment method for nickel particle using acid solution |
| JP4602238B2 (en) * | 2004-12-15 | 2010-12-22 | 三星電機株式会社 | Surface treatment method of nickel particles using acid solution |
| CN104278261A (en) * | 2013-07-12 | 2015-01-14 | 王恩栋 | Environment-friendly type phosphate concentrated liquor for removing rust and iron oxide scales and phosphating and application of environment-friendly type phosphate concentrated liquor |
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