JPS589835B2 - Corrosion inhibitor for copper - Google Patents
Corrosion inhibitor for copperInfo
- Publication number
- JPS589835B2 JPS589835B2 JP5666878A JP5666878A JPS589835B2 JP S589835 B2 JPS589835 B2 JP S589835B2 JP 5666878 A JP5666878 A JP 5666878A JP 5666878 A JP5666878 A JP 5666878A JP S589835 B2 JPS589835 B2 JP S589835B2
- Authority
- JP
- Japan
- Prior art keywords
- copper
- azoles
- corrosion inhibitor
- triazines
- anticorrosive
- 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
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
Description
【発明の詳細な説明】
この発明は銅用防食剤、特に水と接触する系における銅
用防食剤に関するものである。DETAILED DESCRIPTION OF THE INVENTION This invention relates to corrosion inhibitors for copper, particularly in systems that come into contact with water.
銅用防食剤、特に水と接触する系における銅用防食剤と
してベンゾトリアゾール、アルキルベンゾトリアゾール
、イミダゾール、チアゾール、メルカプトベンゾチアゾ
ールなどのアゾール類が使用されている。Azoles such as benzotriazole, alkylbenzotriazole, imidazole, thiazole, and mercaptobenzothiazole are used as anticorrosive agents for copper, particularly in systems that come into contact with water.
これらのアゾール類は銅用防食剤として優れた防食効果
を有するが、高価であるという難点があった。Although these azoles have excellent anticorrosive effects as anticorrosive agents for copper, they have the drawback of being expensive.
本発明はこれらのアゾール類にトリアジン類を配合する
ことにより、相乗的な防食効果を発揮させ、少量のアゾ
ール類の使用で高い防食効果を有する銅用防食剤を提供
することを目的とする。An object of the present invention is to provide a corrosion inhibitor for copper that exhibits a synergistic anticorrosive effect by blending triazines with these azoles, and has a high anticorrosive effect even when using a small amount of azoles.
前述の通りアゾール類は銅に対し優れた防食効果を有す
るが、トリアジン類は単独では銅に対する防食効果を示
さず、後述の実施例からもわかるように逆に銅に対し腐
食促進作用を有している。As mentioned above, azoles have an excellent corrosion-preventing effect on copper, but triazines alone do not show a corrosion-preventing effect on copper, and on the contrary, have a corrosion-promoting effect on copper, as can be seen from the examples below. ing.
ところがトリアジン類をアゾール類に配合すると特異な
防食効果を示し、アゾール類単独の場合よりもはるかに
優れた防食効果が得られることがわかった。However, it has been found that when triazines are blended with azoles, a unique anticorrosive effect can be obtained, which is far superior to that obtained when azoles are used alone.
本発明において使用できるアゾール類としては、ペンゾ
トリアゾール、アルキルベンゾトリアゾール、イミダゾ
ール、チアゾール、メルカプトベンゾチアゾールなどが
あげられる。Azoles that can be used in the present invention include penzotriazole, alkylbenzotriazole, imidazole, thiazole, and mercaptobenzothiazole.
これらのアゾール類は１種または数種の混合物が本発明
に適用できる。One kind or a mixture of several kinds of these azoles can be applied to the present invention.
（式中Ｒ，は−Ｃｌまたは−ＳＣＨ３，Ｒ２，Ｒ３は炭
素数１〜５のアルキルアミノ基を示し、Ｒ２はＲ３と同
じであっても異なってもよい）で表わされるトリアジン
化合物で、さらに好ましくはトリアジンの１つの炭素に
−Ｃｌまたは−ＳＣＨ３が置換し、他の少なくとも１つ
の炭素に炭素数１〜５のアルキルアミノ基が置換したト
リアジン誘導体があげられる。(In the formula, R is -Cl or -SCH3, R2, R3 represent an alkylamino group having 1 to 5 carbon atoms, and R2 may be the same as or different from R3), and further Preferred examples include triazine derivatives in which one carbon of triazine is substituted with -Cl or -SCH3 and at least one other carbon is substituted with an alkylamino group having 1 to 5 carbon atoms.
これらのトリアジン類は１種または数種の混合物が本発
明に適用できる。One kind or a mixture of several kinds of these triazines can be applied to the present invention.
アゾール類とトリアジン類の配合比は１：１〜２０、特
に１：５〜１５が好ましい。The blending ratio of azoles and triazines is preferably 1:1 to 20, particularly 1:5 to 15.
アゾール類トトリアジン類とは使用時に配合された状態
で使用すればよいので、あらかじめ配合して製剤したも
のを使用してもよく、また使用する系に別々に添加して
配合し使用してもよい。Azoles and totriazines can be used in a mixed state at the time of use, so they can be used in a pre-mixed formulation, or they can be added separately to the system to be used. good.
これらの化合物はそのまま、または増量剤その他の薬剤
と配合して粉剤または錠剤としたり、また適当な溶媒に
溶解して液剤として使用することができる。These compounds can be used as they are, or mixed with fillers and other drugs to form powders or tablets, or dissolved in an appropriate solvent to form liquid preparations.
水媒体に使用する場合の添加量はアゾール類が０．１
〜１．５ｐｐｍ （好ましくは０．４〜０．８ｐｐｍ）
、トリアジン類が０．１〜３０ｐｐｍ（好ましくは２〜
１ ２ｐｐｍ）とする。When used in an aqueous medium, the amount of azole added is 0.1
~1.5ppm (preferably 0.4-0.8ppm)
, 0.1 to 30 ppm of triazines (preferably 2 to 30 ppm)
12ppm).
水媒体のｐＨは特に調整する必要はなく、銅に接触する
水媒体の通常のｐＨ範囲である６．８〜９程度の範囲で
十分使用可能である。There is no need to particularly adjust the pH of the aqueous medium, and a pH range of approximately 6.8 to 9, which is the normal pH range of an aqueous medium that comes into contact with copper, is sufficient for use.
本発明の防食剤はボイラ、冷却水系、ラジエータなど銅
が水と接触する系に使用できるほか、銅の腐食が問題と
なるあらゆる系に使用することができる。The anticorrosive agent of the present invention can be used in systems where copper comes into contact with water, such as boilers, cooling water systems, and radiators, as well as in any system where copper corrosion is a problem.
本発明の防食剤は必要に応じて鉄鋼用防食剤などの他の
薬剤と併用することも可能である。The anticorrosive agent of the present invention can also be used in combination with other agents such as anticorrosive agents for steel, if necessary.
実施例
横浜市水にＮａＣｌ５００ｐｐｍ（ａｓＣｌ−）、Ｎａ
２Ｓｏ４５００ｐｐｍ（ａｓ８０４２−）を添加して試
験水とした。Example Yokohama city water contains 500 ppm NaCl (asCl-), Na
2So4500ppm (as8042-) was added to prepare test water.
この水のｐＨは７．０であった。この試験水ｌｌづつを
ビーカーにとり、有機溶剤で液化したベンゾトリアゾー
ル（ＢＴ）、イミダゾール（ＩＤ）、チアゾール（ＴＨ
）、５−メチルベンソトリアゾール（ＴＴ）、２−メル
カプトベンゾチアゾール（ＭＢＴ）、２−エチルアミノ
ー４一イソプロピルアミノー６−メチルチオ−１，３，
５−トリアジン（ＥＭＴ）、および２−クロルー４，６
−ビスエチルアミノー１，３．５−トリアジン（ＣＥＴ
）を第１表のように添加した後、直径５ｃｍの銅製テス
トビース（表面積３８ｃｍ２）を浸漬し、２０〜２３゜
Ｃ下に１６０ｒｐｍで５日間連続回転し防食効果を見た
。The pH of this water was 7.0. Take 1 liter each of this test water in a beaker, and add benzotriazole (BT), imidazole (ID), and thiazole (TH), which have been liquefied with an organic solvent.
), 5-methylbenzotriazole (TT), 2-mercaptobenzothiazole (MBT), 2-ethylamino-4-isopropylamino-6-methylthio-1,3,
5-triazine (EMT), and 2-chloro-4,6
-bisethylamino-1,3,5-triazine (CET
) was added as shown in Table 1, a copper test bead (surface area 38 cm2) with a diameter of 5 cm was immersed and continuously rotated at 160 rpm for 5 days at 20 to 23°C to observe the anticorrosion effect.
その結果を第１表に示す。The results are shown in Table 1.
比較例として前記薬剤を単独添加した場合およびブラン
ク試験の結果を併記する。As a comparative example, the results of a case where the above drug was added alone and a blank test are also shown.
以上の結果より実施例のものは各薬剤単独添加の場合よ
りもはるかに優れた防食効果を示していることがわかる
。From the above results, it can be seen that the samples of Examples exhibit far superior anti-corrosion effects than the cases in which each chemical agent was added alone.
以上本発明を説明したが、本発明の銅用防食剤はアゾー
ル類単独の場合よりはるかに優れた防食効果を示し、少
量のアゾール類の添加で高い防食効果を発揮させること
ができる。As described above, the present invention has been described. The copper corrosion inhibitor of the present invention exhibits a far superior anticorrosion effect than that of an azole alone, and can exhibit a high anticorrosion effect even with the addition of a small amount of an azole.
Claims (1)
、イミダゾール、チアゾールおよびメルカプトベンゾチ
アゾールから選ばれる１種以上のアゾール類と、式 （式中Ｒ１はーＣｌまたは−ＳＣＨ３，Ｒ２，Ｒ３は炭
素数１〜５のアルキルアミノ基を示す）で表わされる１
種以上のトリアジン類とを含有する銅用防食剤。 ２ アゾール類とトリアジン類の配合比は１：１〜２０
である特許請求の範囲第１項記載の銅用防食剤。[Scope of Claims] 1. One or more azoles selected from benzotriazole, alkylbenzotriazole, imidazole, thiazole, and mercaptobenzothiazole, and the formula (wherein R1 is -Cl or -SCH3, R2, R3 are carbon numbers 1 represented by 1 to 5 alkylamino groups)
A corrosion inhibitor for copper containing at least one type of triazine. 2 The blending ratio of azoles and triazines is 1:1 to 20.
The anticorrosive agent for copper according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5666878A JPS589835B2 (en) | 1978-05-15 | 1978-05-15 | Corrosion inhibitor for copper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5666878A JPS589835B2 (en) | 1978-05-15 | 1978-05-15 | Corrosion inhibitor for copper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54148148A JPS54148148A (en) | 1979-11-20 |
| JPS589835B2 true JPS589835B2 (en) | 1983-02-23 |
Family
ID=13033783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5666878A Expired JPS589835B2 (en) | 1978-05-15 | 1978-05-15 | Corrosion inhibitor for copper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS589835B2 (en) |
-
1978
- 1978-05-15 JP JP5666878A patent/JPS589835B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54148148A (en) | 1979-11-20 |
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