JPS5835266B2 - metal corrosion inhibitor - Google Patents
metal corrosion inhibitorInfo
- Publication number
- JPS5835266B2 JPS5835266B2 JP2858076A JP2858076A JPS5835266B2 JP S5835266 B2 JPS5835266 B2 JP S5835266B2 JP 2858076 A JP2858076 A JP 2858076A JP 2858076 A JP2858076 A JP 2858076A JP S5835266 B2 JPS5835266 B2 JP S5835266B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- corrosion inhibitor
- acid
- metal corrosion
- soluble salts
- 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.)
- Expired
Links
- 230000007797 corrosion Effects 0.000 title claims description 17
- 238000005260 corrosion Methods 0.000 title claims description 17
- 229910052751 metal Inorganic materials 0.000 title claims description 16
- 239000002184 metal Substances 0.000 title claims description 16
- 239000003112 inhibitor Substances 0.000 title claims description 13
- CIWBSHSKHKDKBQ-JLAZNSOCSA-N Ascorbic acid Chemical compound OC[C@H](O)[C@H]1OC(=O)C(O)=C1O CIWBSHSKHKDKBQ-JLAZNSOCSA-N 0.000 claims description 12
- 150000003839 salts Chemical class 0.000 claims description 9
- 235000010323 ascorbic acid Nutrition 0.000 claims description 6
- 239000011668 ascorbic acid Substances 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 6
- 229960005070 ascorbic acid Drugs 0.000 claims description 5
- 150000002739 metals Chemical class 0.000 claims description 5
- SZHQPBJEOCHCKM-UHFFFAOYSA-N 2-phosphonobutane-1,2,4-tricarboxylic acid Chemical compound OC(=O)CCC(P(O)(O)=O)(C(O)=O)CC(O)=O SZHQPBJEOCHCKM-UHFFFAOYSA-N 0.000 claims description 3
- BXLLINKJZLDGOX-UHFFFAOYSA-N dimethoxyphosphorylmethanamine Chemical compound COP(=O)(CN)OC BXLLINKJZLDGOX-UHFFFAOYSA-N 0.000 claims description 3
- BAERPNBPLZWCES-UHFFFAOYSA-N (2-hydroxy-1-phosphonoethyl)phosphonic acid Chemical compound OCC(P(O)(O)=O)P(O)(O)=O BAERPNBPLZWCES-UHFFFAOYSA-N 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 230000000694 effects Effects 0.000 description 4
- 231100000331 toxic Toxicity 0.000 description 4
- 230000002588 toxic effect Effects 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical class [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 3
- 239000008235 industrial water Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical compound OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 150000002826 nitrites Chemical class 0.000 description 2
- 150000003009 phosphonic acids Chemical class 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- -1 Chlorine ions Chemical class 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 229920000388 Polyphosphate Polymers 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229940072107 ascorbate Drugs 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 239000001205 polyphosphate Substances 0.000 description 1
- 235000011176 polyphosphates Nutrition 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 235000021419 vinegar Nutrition 0.000 description 1
- 239000000052 vinegar Substances 0.000 description 1
- 150000003751 zinc Chemical class 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
- C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Description
【発明の詳細な説明】
本発明は、工業用水系、一般循環水系等と接触している
金属表面の腐食を防止するための金属腐食防止剤に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a metal corrosion inhibitor for preventing corrosion of metal surfaces that are in contact with industrial water systems, general circulating water systems, and the like.
従来、循環冷却水系等の水中における金属の表面腐食防
止剤としては、クロム酸塩類、亜鉛塩類、有機リン酸塩
類、ポＩＪ ＩＪン酸塩類、亜硝酸塩類の単体、又はこ
れらの混合物が知られている。Conventionally, as surface corrosion inhibitors for metals in water such as circulating cooling water systems, chromates, zinc salts, organic phosphates, polyphosphates, and nitrites alone or mixtures thereof have been known. ing.
しかしながら、クロム酸塩類は効果的な金属腐食防止剤
であるが、それらが人体に触れると皮膚や眼を著しく害
する。However, although chromates are effective metal corrosion inhibitors, they can seriously harm the skin and eyes when they come into contact with the human body.
またクロム酸塩の酢液は化学的処理をした後廃液しなけ
ればならないほど有毒である。Also, chromate vinegar solution is so toxic that it must be disposed of after chemical treatment.
亜鉛もクロムと同様有害金属であり、これを使用すれば
当然循環汚染の恐れがある。Zinc is also a toxic metal like chromium, and its use naturally poses a risk of circulating pollution.
また亜硝酸塩類も毒性が強く廃液する前に化学的処理し
なければならない欠点があった。Furthermore, nitrites are highly toxic and have to be chemically treated before being disposed of.
これらの欠点を除去するものとして、従来またホスホン
酸化合物が金属の腐食防止剤として使用されて来たが、
ホスホン酸は有毒性がないが単独で使用すると防食効果
が弱い欠点がある。In order to eliminate these drawbacks, phosphonic acid compounds have traditionally been used as corrosion inhibitors for metals.
Although phosphonic acid is not toxic, it has the disadvantage of having a weak anticorrosion effect when used alone.
本発明は、上記の様な従来の金属腐食防止剤の欠点を除
去し、毒性がなく防食効果の優れた金属の腐食防止剤を
提供することを目的とする。An object of the present invention is to eliminate the drawbacks of conventional metal corrosion inhibitors as described above, and to provide a metal corrosion inhibitor that is non-toxic and has excellent corrosion prevention effects.
本発明による金属腐食防止剤は、アスコルビン酸又は水
溶性塩類のうち少なくとも１種の化合物と、アミノトリ
メチルホスホン酸、該アミノトリメチルホスホン酸の水
溶性塩類、ヒト和キシエチリデンホスホン酸、該ヒドロ
キシエチリデンホスホン酸の水溶性塩類、ホスホノブタ
ントリカルボン酸又は該ホスホノブタントリカルボン酸
の水溶性塩類のうち少なくとも１種の化合物とを配合し
たものから本質的になる。The metal corrosion inhibitor according to the present invention comprises at least one compound selected from ascorbic acid or water-soluble salts, aminotrimethylphosphonic acid, water-soluble salts of aminotrimethylphosphonic acid, humanized xyethylidenephosphonic acid, and hydroxyethylidenephosphonic acid. It consists essentially of a compound blended with at least one compound selected from water-soluble salts of acids, phosphonobutanetricarboxylic acid, and water-soluble salts of the phosphonobutanetricarboxylic acid.
上記化合物の配合比は、アスコルビン酸又はその水溶性
塩類と、ホスホン酸類又はその水溶性塩類との重量比が
１：４〜４：１が好適である。The compounding ratio of the above compounds is preferably such that the weight ratio of ascorbic acid or its water-soluble salts to phosphonic acids or its water-soluble salts is 1:4 to 4:1.
本発明による金属腐食防止剤を工業用水等に添加する場
合、工業用水等の水温、流速等の条件により多少の変化
はあるが、３０〜２００ ｐｐｍの添加量で良好な防食
効果を発揮する。When the metal corrosion inhibitor according to the present invention is added to industrial water, etc., it exhibits a good anticorrosive effect at an addition amount of 30 to 200 ppm, although there are some changes depending on conditions such as the water temperature and flow rate of the industrial water.
本発明の腐食防止剤によりその腐食を防止される金属と
しては、鉄、銅、アルミニウム、亜鉛及びこれらの金属
の合金等がある。Examples of metals whose corrosion is prevented by the corrosion inhibitor of the present invention include iron, copper, aluminum, zinc, and alloys of these metals.
次に、実施例によって本発明を更に詳述するが、本発明
はこれに限定されるものではない。Next, the present invention will be explained in more detail with reference to Examples, but the present invention is not limited thereto.
実施例
試験水（東京都地下水、ｐＨ６，１、電気伝導度３２０
μ７Ｊ／ｃｍ、全硬度９５．０ｐｐｍ ａｓ ＣａＣ
Ｏ３＋Ｍ−アルカリ度３２．５ｐｐｍ ａｓ ＣａＣＯ
３、塩素イオン４１．０ ｐｐｍ ）を恒温槽内に４０
°Ｃに保ち、該試験水中に金属試験片（ｓｐｃテストパ
ネル６０Ｘ４０Ｘ２ｍｍ）を浸漬し、電磁攪拌機を用い
て試験水を循環させ、該試験水に本発明の腐食防止剤を
添加して１２０時間経過後、金属試験片を恒温槽から取
出し、その腐食減量（ｍｇ）、腐食速度（■／ｄｉ／ｄ
ａｙ）を測定した。Example test water (Tokyo underground water, pH 6.1, electrical conductivity 320)
μ7J/cm, total hardness 95.0ppm as CaC
O3+M-Alkalinity 32.5ppm as CaCO
3. Chlorine ions (41.0 ppm) were placed in a thermostatic chamber at 40%
A metal test piece (SPC test panel 60 x 40 x 2 mm) was immersed in the test water at °C, the test water was circulated using an electromagnetic stirrer, and the corrosion inhibitor of the present invention was added to the test water for 120 hours. After that, the metal test piece was taken out from the thermostatic chamber, and its corrosion loss (mg) and corrosion rate (■/di/d
ay) was measured.
更に対比試験として、腐食防止剤を添加しな力音曇った
場合と、アスコルビン酸塩、す
独使用した場合の実験も行なった。Furthermore, as a comparative test, experiments were conducted in which the corrosion inhibitor was not added and when ascorbate was used.
上記試験結果を次表に示す。The above test results are shown in the table below.
ン酸塩類を単
上記試験結果により、アスコルビン酸ソーダ等を単独で
使用するより、アスコルビン酸又はその水酸性塩類がホ
スホン酸又はその水溶性塩類と相剰的に防食効果を発揮
することが明らかである。Based on the above test results, it is clear that ascorbic acid or its hydroxyl salts exhibit a corrosion-preventing effect in combination with phosphonic acid or its water-soluble salts, rather than using sodium ascorbic acid alone. be.
Claims (1)
選択された少なくとも１種の化合物と、アミノトリメチ
ルホスホン酸、ヒドロキシェチリデンジホスホン酸、ホ
スホノブタントリカルボン酸及びそれらの水溶性塩類か
ら成る群から選択された少なくとも１種の化合物とを配
合してなる金属の腐食防止剤。1 At least one compound selected from the group consisting of ascorbic acid and its water-soluble salts, and selected from the group consisting of aminotrimethylphosphonic acid, hydroxyethylidene diphosphonic acid, phosphonobutanetricarboxylic acid and their water-soluble salts. A corrosion inhibitor for metals, which is blended with at least one compound.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2858076A JPS5835266B2 (en) | 1976-03-18 | 1976-03-18 | metal corrosion inhibitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2858076A JPS5835266B2 (en) | 1976-03-18 | 1976-03-18 | metal corrosion inhibitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS52111846A JPS52111846A (en) | 1977-09-19 |
| JPS5835266B2 true JPS5835266B2 (en) | 1983-08-01 |
Family
ID=12252527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2858076A Expired JPS5835266B2 (en) | 1976-03-18 | 1976-03-18 | metal corrosion inhibitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5835266B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6369095B2 (en) * | 2014-03-31 | 2018-08-08 | 栗田工業株式会社 | Method for inhibiting corrosion of copper-based member and corrosion inhibitor |
-
1976
- 1976-03-18 JP JP2858076A patent/JPS5835266B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS52111846A (en) | 1977-09-19 |
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