JPH02285082A - Method for preventing corrosion of metal and corrosion inhibitor - Google Patents
Method for preventing corrosion of metal and corrosion inhibitorInfo
- Publication number
- JPH02285082A JPH02285082A JP10644689A JP10644689A JPH02285082A JP H02285082 A JPH02285082 A JP H02285082A JP 10644689 A JP10644689 A JP 10644689A JP 10644689 A JP10644689 A JP 10644689A JP H02285082 A JPH02285082 A JP H02285082A
- Authority
- JP
- Japan
- Prior art keywords
- zinc
- corrosion
- tetrakis
- hydroxymethyl
- phosphonium salt
- 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
Links
- 238000005260 corrosion Methods 0.000 title claims abstract description 34
- 230000007797 corrosion Effects 0.000 title claims abstract description 33
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 20
- 239000002184 metal Substances 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims description 18
- 239000003112 inhibitor Substances 0.000 title claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910052742 iron Inorganic materials 0.000 claims abstract description 14
- 239000011701 zinc Substances 0.000 claims abstract description 11
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 8
- FAUOSXUSCVJWAY-UHFFFAOYSA-N tetrakis(hydroxymethyl)phosphanium Chemical class OC[P+](CO)(CO)CO FAUOSXUSCVJWAY-UHFFFAOYSA-N 0.000 claims description 11
- 150000003752 zinc compounds Chemical class 0.000 claims description 11
- 150000002739 metals Chemical class 0.000 claims description 7
- JIAARYAFYJHUJI-UHFFFAOYSA-L zinc dichloride Chemical compound [Cl-].[Cl-].[Zn+2] JIAARYAFYJHUJI-UHFFFAOYSA-L 0.000 claims description 6
- 238000005536 corrosion prevention Methods 0.000 claims description 5
- PTFCDOFLOPIGGS-UHFFFAOYSA-N Zinc dication Chemical compound [Zn+2] PTFCDOFLOPIGGS-UHFFFAOYSA-N 0.000 claims description 4
- JJKVMNNUINFIRK-UHFFFAOYSA-N 4-amino-n-(4-methoxyphenyl)benzamide Chemical compound C1=CC(OC)=CC=C1NC(=O)C1=CC=C(N)C=C1 JJKVMNNUINFIRK-UHFFFAOYSA-N 0.000 claims description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 3
- 239000004480 active ingredient Substances 0.000 claims description 3
- 235000005074 zinc chloride Nutrition 0.000 claims description 3
- 239000011592 zinc chloride Substances 0.000 claims description 3
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical compound [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims description 3
- 229960001763 zinc sulfate Drugs 0.000 claims description 3
- 229910000368 zinc sulfate Inorganic materials 0.000 claims description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical group Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 2
- AKXUUJCMWZFYMV-UHFFFAOYSA-N tetrakis(hydroxymethyl)phosphanium hydrochloride Chemical group Cl.OC[P+](CO)(CO)CO AKXUUJCMWZFYMV-UHFFFAOYSA-N 0.000 claims description 2
- ONDPHDOFVYQSGI-UHFFFAOYSA-N zinc nitrate Chemical compound [Zn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ONDPHDOFVYQSGI-UHFFFAOYSA-N 0.000 claims 4
- 230000000694 effects Effects 0.000 abstract description 10
- 150000004714 phosphonium salts Chemical class 0.000 abstract description 9
- 230000002401 inhibitory effect Effects 0.000 abstract description 7
- 239000000126 substance Substances 0.000 abstract description 4
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical class [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 abstract description 2
- 150000002500 ions Chemical class 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 239000003814 drug Substances 0.000 description 4
- 229940079593 drug Drugs 0.000 description 4
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 3
- 230000005764 inhibitory process Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 150000003009 phosphonic acids Chemical class 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- -1 Ferrous metals Chemical class 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 230000000844 anti-bacterial effect Effects 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000012085 test solution Substances 0.000 description 2
- YIEDHPBKGZGLIK-UHFFFAOYSA-L tetrakis(hydroxymethyl)phosphanium;sulfate Chemical compound [O-]S([O-])(=O)=O.OC[P+](CO)(CO)CO.OC[P+](CO)(CO)CO YIEDHPBKGZGLIK-UHFFFAOYSA-L 0.000 description 2
- 230000004580 weight loss Effects 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 125000000143 2-carboxyethyl group Chemical group [H]OC(=O)C([H])([H])C([H])([H])* 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 150000003851 azoles Chemical class 0.000 description 1
- 239000003899 bactericide agent Substances 0.000 description 1
- 229960000686 benzalkonium chloride Drugs 0.000 description 1
- 125000005501 benzalkonium group Chemical class 0.000 description 1
- CADWTSSKOVRVJC-UHFFFAOYSA-N benzyl(dimethyl)azanium;chloride Chemical compound [Cl-].C[NH+](C)CC1=CC=CC=C1 CADWTSSKOVRVJC-UHFFFAOYSA-N 0.000 description 1
- 239000013065 commercial product Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000000645 desinfectant Substances 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
- 230000005593 dissociations Effects 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- ACVYVLVWPXVTIT-UHFFFAOYSA-N phosphinic acid Chemical compound O[PH2]=O ACVYVLVWPXVTIT-UHFFFAOYSA-N 0.000 description 1
- XYFCBTPGUUZFHI-UHFFFAOYSA-O phosphonium Chemical compound [PH4+] XYFCBTPGUUZFHI-UHFFFAOYSA-O 0.000 description 1
- 235000021110 pickles Nutrition 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002455 scale inhibitor Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- AKXUUJCMWZFYMV-UHFFFAOYSA-M tetrakis(hydroxymethyl)phosphanium;chloride Chemical compound [Cl-].OC[P+](CO)(CO)CO AKXUUJCMWZFYMV-UHFFFAOYSA-M 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- YCBRTSYWJMECAH-UHFFFAOYSA-N tributyl(tetradecyl)phosphanium Chemical compound CCCCCCCCCCCCCC[P+](CCCC)(CCCC)CCCC YCBRTSYWJMECAH-UHFFFAOYSA-N 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Anti-Oxidant Or Stabilizer Compositions (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
Description
【発明の詳細な説明】
（イ）産業上の利用分野
この発明は、金属腐食防止方法及び防止剤に関する。さ
らに詳しくは、水系中における鉄系金属の腐食を効率良
く抑制することができる方法及び薬剤に関する。DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field This invention relates to a method and an inhibitor for preventing metal corrosion. More specifically, the present invention relates to a method and a drug that can efficiently suppress corrosion of iron-based metals in aqueous systems.
（ロ）従来の技術
軟鋼、鋳鉄等の鉄系金属は古くから各種工業用の構造材
例えば、パイプ、支柱、壁材等として広く用いられてい
るが、これらは水や湿分との接触によって腐食してその
構造材としての強度を低下させたり、腐食生成物を発生
させて各種の障害をもたらす。そこで、これらの障害を
防止又は抑制するために従来からいわゆる防食剤や防錆
剤を用いる方法が提案されている。(b) Conventional technology Ferrous metals such as mild steel and cast iron have been widely used as structural materials for various industries such as pipes, supports, and wall materials since ancient times. It corrodes, reducing its strength as a structural material, and generates corrosion products, causing various problems. Therefore, in order to prevent or suppress these problems, methods using so-called anticorrosives and rust preventives have been proposed.
そして、ことに工業用冷却水系、プロセス水系、水貯留
槽等の鉄系金属が水と直接接触する系においては、この
水系中に種々の化学物質、例えばリン酸、ホスホン酸類
、重金属塩等を添加して腐食の抑制又は防止を行う方法
が汎用されている。In particular, in systems where iron-based metals come into direct contact with water, such as industrial cooling water systems, process water systems, and water storage tanks, various chemicals such as phosphoric acid, phosphonic acids, heavy metal salts, etc. A widely used method is to suppress or prevent corrosion by adding it.
（ハ）発明が解決しようとする課題
この発明は、上記のごとく水系中に化学物質を添加して
鉄系金属の腐食の防止又は抑制を行う一つの新しい方法
及び薬剤を提供しようとするものである。(c) Problems to be Solved by the Invention This invention seeks to provide a new method and agent for preventing or suppressing corrosion of iron-based metals by adding a chemical substance to a water system as described above. be.
この発明に用いる一方の有効成分のテトラキス（ヒドロ
キシメチル）ホスホニウム塩は、従来から、難燃剤、染
色助剤、皮なめし剤等として知られており、さらに水系
中における殺菌処理剤として有効であることも知られて
いる（特開昭６０−７２８０７号、同６２−４２９０８
号公報）。しかしながら鉄系金属の腐食抑制成分として
使用することは全く知られていない。Tetrakis(hydroxymethyl)phosphonium salt, one of the active ingredients used in this invention, has been known as a flame retardant, dyeing aid, leather tanning agent, etc., and is also effective as a disinfectant in water systems. is also known (JP-A-60-72807, JP-A No. 62-42908)
Publication No.). However, its use as a corrosion inhibiting component for iron-based metals is completely unknown.
本発明者らは、上記ホスホニウム塩の有する殺菌作用を
前提としてこれをさらに腐食抑制成分として作用させる
可能性について鋭意研究を行った。The present inventors conducted extensive research on the possibility of using the above-mentioned phosphonium salt as a corrosion-inhibiting component, assuming its bactericidal action.
その結果、上記ホスホニウム塩自体はほとんど腐食抑制
効果を示さないが、この化合物と亜鉛化合物とを各々特
定量併用添加することにより、各々の単独使用時には見
られない優れた腐食抑制効果が奏される事実を見出した
。As a result, the above phosphonium salt itself shows almost no corrosion inhibition effect, but by adding a specific amount of each of this compound and a zinc compound in combination, an excellent corrosion inhibition effect that cannot be seen when each is used alone can be achieved. I found out the truth.
（ニ）課題を解決するための手段
かくしてこの発明によれば、鉄系金属と接触する水系中
に、テトラキス（ヒドロキシメチル）ホスホニウム塩と
水中で亜鉛イオンを容易に放出しうる亜鉛化合物とを、
前者の濃度が４１９／Ｑ以上、後者の濃度が亜鉛量とし
て１ｍ９／１２以上となるように併用添加して、上記鉄
系金属の腐食を抑制することを特徴とする金属腐食防止
方法が提供される。(d) Means for Solving the Problems Thus, according to the present invention, a tetrakis(hydroxymethyl)phosphonium salt and a zinc compound capable of easily releasing zinc ions in water are added to an aqueous system in contact with an iron-based metal.
There is provided a method for preventing metal corrosion, characterized in that the corrosion of the iron-based metal is suppressed by adding them together so that the concentration of the former is 419/Q or more and the concentration of the latter is 1 m9/12 or more as an amount of zinc. Ru.
この発明に用いるテトラキス（ヒドロキシメチル）ホス
ホニウム塩は、下式（Ｉ）：
（式中、Ｘは対陰イオンを意味する）で表わされる化合
物であり、通常、吸湿性の大きい白色の粉末状結晶とし
て入手でき、水とは任意の割合で溶解するが、低級アル
コール以外の有機溶剤にはほとんど溶解しない性質を有
する。また、かかるホスホニウム塩は、例えば特開昭６
０−７２８０７号公報に記載の方法により、製造するこ
とができる。The tetrakis(hydroxymethyl)phosphonium salt used in this invention is a compound represented by the following formula (I): (wherein, X means a counteranion), and is usually a highly hygroscopic white powder crystal. It is soluble in water in any proportion, but has the property of being almost insoluble in organic solvents other than lower alcohols. In addition, such phosphonium salts can be used, for example, in JP-A No. 6
It can be produced by the method described in Japanese Patent No. 0-72807.
これらのホスホニウム塩の中でもとくに、テトラキス（
ヒドロキシメチル）ホスホニウム塩酸塩（式（（）のｘ
ｏがＣｔ−）又はテトラキス（ヒドロキンメチル）ホス
ホニウム硫酸塩（式（Ｉ）中のＸ′９が１／２Ｓ ０．
２−）を用いるのか好ましい。Among these phosphonium salts, tetrakis (
hydroxymethyl)phosphonium hydrochloride (x of the formula (())
o is Ct-) or tetrakis(hydroquinemethyl)phosphonium sulfate (X'9 in formula (I) is 1/2S0.
It is preferable to use 2-).
一方、この発明に用いる亜鉛化合物は、亜鉛イオンを水
中に効率良く供給する亜鉛源として用いられ、従って水
中での解離度が高い亜鉛塩が適しており、ことに、塩化
亜鉛、硫酸亜鉛、硝酸亜鉛又はスルファミン酸亜鉛を用
いるのが好ましい。On the other hand, the zinc compound used in this invention is used as a zinc source to efficiently supply zinc ions into water, and therefore zinc salts with a high degree of dissociation in water are suitable, and in particular, zinc chloride, zinc sulfate, nitric acid Preference is given to using zinc or zinc sulfamate.
もちろん、これらは各々組合わせて用いられてもよい。Of course, these may be used in combination.
この発明の方法において、上記ホスホニウム塩は、優れ
た腐食防止効果の点で、腐食防止を意図する水系中に４
１１Ｉｇ／Ｑ以上となるように添加される。その上限は
、とくに限定されないが、５０ｍｇ／（！程度が適して
いる。５０ｍｇ／１２を越えても増量に見合う効果の向
上が期待できず、経済性の点で好ましくない。一方、併
用する亜鉛化合物は、優れた腐食防止効果の点で、亜鉛
量としてＩＩＩＩｇ／Ｑ以上となるように添加され、そ
の上限は前記と同様な理由で３０ ｍｇ／ Ｑ程度が適
している。かかる範囲の添加量においても、ことにホス
ホニウム塩；亜鉛の重量比として１９：１〜ｌ：４の範
囲で添加するのが好ましい。In the method of the present invention, the phosphonium salt is used in an aqueous system intended for corrosion prevention because of its excellent corrosion prevention effect.
It is added so that it is 11Ig/Q or more. The upper limit is not particularly limited, but about 50 mg/(! The compound is added so that the amount of zinc is IIIg/Q or more in terms of excellent corrosion prevention effect, and the upper limit is suitably about 30 mg/Q for the same reason as above.The amount added within this range. Also, it is particularly preferable to add the phosphonium salt to zinc in a weight ratio of 19:1 to 1:4.
この発明の方法は、上記二種の有効成分を対象水系中に
同時又は別々に添加して実施することができる。その際
の形態は、粉状そのままあるいは適当な溶媒に溶解せし
めた液剤として用いることができる。通常、これらの両
成分を混合してなる粉剤や両成分を水に溶解してなる液
剤として用いるのが適している。このような薬剤は、腐
食抑制剤としてそれ自体新規なものであり、従ってこの
発明は、かかる両成分を少なくとも含有する鉄系金属腐
食抑制剤をも提供するものである。The method of this invention can be carried out by adding the above two types of active ingredients into the target aqueous system simultaneously or separately. In this case, it can be used as it is in powder form or as a solution dissolved in an appropriate solvent. Generally, it is suitable to use a powder prepared by mixing these two components or a liquid prepared by dissolving both components in water. Such agents are novel in themselves as corrosion inhibitors, and therefore the present invention also provides iron-based metal corrosion inhibitors containing at least both of these components.
このような両成分の併用により各々の単独使用時には見
られない顕著な腐食抑制効果が奏され、鉄系金属の腐食
による各種障害が防止又は抑制されることとなる。By using these two components in combination, a remarkable corrosion inhibiting effect not seen when each component is used alone is exhibited, and various problems caused by corrosion of iron-based metals are prevented or suppressed.
なお、この発明の方法及び薬剤において、この発明の効
果が阻害されない他の成分、例えばモリブデン酸塩、ア
ゾール類、ホスホン酸類、ホスフィン酸類、アクリル酸
系低分子重合体、マレイン酸系低分子重合体のような池
の防食スはスケール防止剤が併用又は含有されていても
よい。In addition, in the method and drug of this invention, other components that do not inhibit the effects of this invention, such as molybdates, azoles, phosphonic acids, phosphinic acids, acrylic acid-based low-molecular polymers, maleic acid-based low-molecular polymers The anti-corrosion agent for ponds may also contain or contain a scale inhibitor.
（ホ）実施例
試験液として大阪市水道水５倍ａ縮水を用いて、軟鋼テ
ストピースに対する防食効果確認試験を行った。(e) Example A test was conducted to confirm the anticorrosion effect on a mild steel test piece using 5 times a condensed Osaka city tap water as the test liquid.
まず、１１２の平底ビーカーに所定量の薬剤を加えた試
験液ｔＱを収容し、モーターと連動した撹伴棒の先端に
軟鋼のテストピース［市販品名５ｐｃｃ、形状は３０
Ｘ ５０ Ｘ １ ｍ＋ｎの長方形板状である］を懸吊
し、液中に浸漬した。次いで、サーモスタットを付設し
てマントルヒータにて５０℃に液温を保ち、上記テスト
ピースを１０ Ｏｒｐｍの速度で回転させつつ５日間テ
ストした。First, a test solution tQ containing a predetermined amount of chemicals was placed in a 112 flat-bottomed beaker, and a mild steel test piece [commercial product name: 5 pcc, shape: 30
A rectangular plate with dimensions of X 50 X 1 m+n was suspended and immersed in the liquid. Next, a thermostat was attached and the liquid temperature was maintained at 50° C. using a mantle heater, and the test piece was tested for 5 days while rotating at a speed of 10 Orpm.
テスト終了後テストピースを取り出し酸洗、水洗、乾燥
後重量を測定し、重量減少量からＭＤＤ（Ｂ／ｄａ”
・ｄａｙ）、即ち１日当たりの腐食減量を測定した。使
用した試験液の水質を第１表に示す。After the test, take out the test piece, pickle it, wash it with water, dry it, measure its weight, and determine the MDD (B/da") from the amount of weight loss.
・day), that is, the corrosion weight loss per day was measured. Table 1 shows the water quality of the test solution used.
（以下余白）
第１表 試験液の水質
＊５．Ｐ−２・・・・・・ビス（ポリ−２−カルボキシ
エチル）ホスフィン酸
＊６．に−１・・・・・・塩化ベンザルコニウム（以下
余白）
試験結果を第２表に示す。なお、表中、薬剤名中の記号
は、下記の薬剤名を表わす。(Left below) Table 1 Water quality of test liquid *5. P-2...Bis(poly-2-carboxyethyl)phosphinic acid *6. -1... Benzalkonium chloride (the following is a blank space) The test results are shown in Table 2. In addition, the symbols in the drug names in the table represent the following drug names.
＊１．ＴＨＰＳ・・・テトラキス（ヒドロキシメチル）
ホスホニウム硫酸塩
＊２．ＴＨＰＣ・・・テトラキス（ヒドロキシメチル）
ホスホニウム塩酸塩
＊３．ＰＢＳ・・・・・・２−ホスホノブタン−１，２
，４−トリカルボン酸
＊４．Ｐ−１・・・・・・トリブチルテトラデシルフォ
スフオニウム塩酸塩
第２表
試験結果
上記試験結果から明らかなように、テトラキス（ヒドロ
キシメチル）ホスホニウム塩単独使用時においてはＭＤ
Ｄが１５０〜１９０であり、亜鉛化合物単独使用時にお
いてら１７５〜１８５であって腐食抑制効果はほとんど
認められないのに、対し、各々４ｍｇ／（１以上及びｌ
Ｉ＋１ｇ／１２以上併用することによりＭ Ｄ Ｄが２
０以下に著しく低下し優れた腐食抑制効果が奏されるこ
とが判る。*1. THPS...tetrakis (hydroxymethyl)
Phosphonium sulfate *2. THPC...tetrakis (hydroxymethyl)
Phosphonium hydrochloride *3. PBS...2-phosphonobutane-1,2
, 4-tricarboxylic acid *4. P-1... Tributyltetradecylphosphonium hydrochloride Table 2 Test results As is clear from the above test results, when tetrakis(hydroxymethyl)phosphonium salt is used alone, MD
D is 150 to 190, and D is 175 to 185 when zinc compound is used alone, and almost no corrosion inhibition effect is observed.
When used together with I+1g/12 or more, MDD is 2
It can be seen that the corrosion resistance is significantly reduced to 0 or less, and an excellent corrosion inhibiting effect is exhibited.
また、この効果は、防食性化合物として公知のホスホン
酸類やホスフィン酸類あるいはベンザルコニウム塩を亜
鉛化合物と併用した場合に比して、極めて優れたもので
あることが判る。Furthermore, it can be seen that this effect is extremely superior to that obtained when phosphonic acids, phosphinic acids, or benzalkonium salts, which are known as anticorrosive compounds, are used in combination with a zinc compound.
（へ）発明の効果
この発明によれば、殺菌剤の一種である特定のホスホニ
ウム塩を、亜鉛化合物の存在下において腐食抑制成分と
して作用させることが可能となると共に、優れた鉄系金
属の腐食抑制効果を発現することができる。(F) Effects of the Invention According to this invention, it is possible to make a specific phosphonium salt, which is a type of bactericide, act as a corrosion-inhibiting component in the presence of a zinc compound, and it also has excellent corrosion resistance of iron-based metals. It can exert an inhibitory effect.
従って、各種水系例えば工業用冷却水系、プロセス水系
、水貯留槽等における腐食に基づく障害を防止すること
ができ、微生物が原因となる腐食ら抑制又は防止するこ
とが可能となる。Therefore, damage caused by corrosion in various water systems such as industrial cooling water systems, process water systems, water storage tanks, etc. can be prevented, and corrosion caused by microorganisms can be suppressed or prevented.
Claims (1)
キシメチル）ホスホニウム塩と水中で亜鉛イオンを容易
に放出しうる亜鉛化合物とを、前者の濃度が４ｍｇ／ｌ
以上、後者の濃度が亜鉛量として１ｍｇ／ｌ以上となる
ように併用添加して、上記鉄系金属の腐食を抑制するこ
とを特徴とする金属腐食防止方法。 ２、テトラキス（ヒドロキシメチル）ホスホニウム塩が
４〜５０ｍｇ／ｌ、亜鉛化合物が亜鉛量として１〜３０
ｍｇ／ｌ添加される請求項１記載の腐食防止方法。 ３、テトラキス（ヒドロキシメチル）ホスホニウム塩が
、テトラキス（ヒドロキシメチル）ホスホニウムの塩酸
塩又は硫酸塩である請求項１記載の腐食防止方法。 ４、亜鉛化合物が、塩化亜鉛、硫酸亜鉛、硝酸亜鉛又は
スルファミン酸亜鉛である請求項１記載の腐食防止方法
。 ５、テトラキス（ヒドロキシメチル）ホスホニウム塩と
、水中で亜鉛イオンを容易に放出しうる亜鉛化合物とを
有効成分として含有してなる金属腐食防止剤。 ６、テトラキス（ヒドロキシメチル）ホスホニウム塩が
、テトラキス（ヒドロキシメチル）ホスホニウムの塩酸
塩又は硫酸塩である請求項５記載の腐食防止剤。 ７、亜鉛化合物が、塩化亜鉛、硫酸亜鉛、硝酸亜鉛又は
スルファミン酸亜鉛である請求項５記載の腐食防止剤。[Scope of Claims] 1. A tetrakis(hydroxymethyl)phosphonium salt and a zinc compound capable of easily releasing zinc ions in water are added to the water system that comes into contact with iron-based metals at a concentration of 4 mg/l of the former.
A method for preventing metal corrosion, characterized in that corrosion of the iron-based metal is suppressed by adding the latter in combination so that the concentration of zinc is 1 mg/l or more. 2. Tetrakis(hydroxymethyl)phosphonium salt is 4 to 50 mg/l, zinc compound is 1 to 30 as zinc amount
The corrosion prevention method according to claim 1, wherein the corrosion prevention method is added in an amount of mg/l. 3. The method for preventing corrosion according to claim 1, wherein the tetrakis(hydroxymethyl)phosphonium salt is a hydrochloride or sulfate of tetrakis(hydroxymethyl)phosphonium. 4. The method for preventing corrosion according to claim 1, wherein the zinc compound is zinc chloride, zinc sulfate, zinc nitrate or zinc sulfamate. 5. A metal corrosion inhibitor containing as active ingredients a tetrakis(hydroxymethyl)phosphonium salt and a zinc compound capable of easily releasing zinc ions in water. 6. The corrosion inhibitor according to claim 5, wherein the tetrakis(hydroxymethyl)phosphonium salt is a tetrakis(hydroxymethyl)phosphonium hydrochloride or sulfate. 7. The corrosion inhibitor according to claim 5, wherein the zinc compound is zinc chloride, zinc sulfate, zinc nitrate or zinc sulfamate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1106446A JP2776552B2 (en) | 1989-04-25 | 1989-04-25 | Metal corrosion prevention method and inhibitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1106446A JP2776552B2 (en) | 1989-04-25 | 1989-04-25 | Metal corrosion prevention method and inhibitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02285082A true JPH02285082A (en) | 1990-11-22 |
| JP2776552B2 JP2776552B2 (en) | 1998-07-16 |
Family
ID=14433847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1106446A Expired - Lifetime JP2776552B2 (en) | 1989-04-25 | 1989-04-25 | Metal corrosion prevention method and inhibitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2776552B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001081635A1 (en) * | 2000-04-27 | 2001-11-01 | Rhodia Consumer Specialties Limited | Phosphine compounds and their use as tanning agents, corrosion inhibitors and biocides |
-
1989
- 1989-04-25 JP JP1106446A patent/JP2776552B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001081635A1 (en) * | 2000-04-27 | 2001-11-01 | Rhodia Consumer Specialties Limited | Phosphine compounds and their use as tanning agents, corrosion inhibitors and biocides |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2776552B2 (en) | 1998-07-16 |
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