KR100297808B1 - Descaling agent - Google Patents

Descaling agent Download PDF

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KR100297808B1
KR100297808B1 KR1019950005441A KR19950005441A KR100297808B1 KR 100297808 B1 KR100297808 B1 KR 100297808B1 KR 1019950005441 A KR1019950005441 A KR 1019950005441A KR 19950005441 A KR19950005441 A KR 19950005441A KR 100297808 B1 KR100297808 B1 KR 100297808B1
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water
molybdate
corrosion
water treatment
hydrogen atom
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KR1019950005441A
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KR960034105A (en
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최동진
김진배
신정주
김진호
손관주
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조민호
에스케이케미칼주식회사
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
    • C02F5/08—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents
    • C02F5/10—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances
    • C02F5/105—Treatment of water with complexing chemicals or other solubilising agents for softening, scale prevention or scale removal, e.g. adding sequestering agents using organic substances combined with inorganic substances
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/08—Corrosion inhibition
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/22—Eliminating or preventing deposits, scale removal, scale prevention

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)

Abstract

PURPOSE: A descaling agent incorporating triazole, molybdate and phosphonocarboxylic acid is provided to prevent corrosion and scale deposition on boiler pipe. CONSTITUTION: The descaling agent comprises: 0.1-10wt.% of a triazole compound selected from benzotriazole, tolyltriazole or mercaptobenzotriazole; 0.5-30wt.% of a molybdate salt selected from sodium molybdate or potassium molybdate; and 0.5-40wt.% of phosphonocarboxylic acid represented by formula I, where n is an integer of 0 or 1; R1 and R2 that respectively denote hydrogen ion, hydroxyl, alkyl with a carbon number of C1 to C4, allyl, -CH2PO3H2 or -CH(COOH)CH2COOH are identical or different with the proviso that n is zero; R3 denotes hydrogen atom, hydroxyl, alkyl with a carbon number of C1 to C4, -CH2CH2COOH with the proviso that R1 and R2 is hydrogen atom when n is 1, wherein R2 and R3 denote hydrogen atom with the proviso that R1 is methyl. The descaling agent is dosed in circulating water in an amount of 1 to 500ml/L.

Description

[발명의 명칭][Name of invention]

수중(水中)금속의 부식방지용 수처리제 조성물Water treatment agent composition for corrosion prevention of water metal

[발명의 상세한 설명]Detailed description of the invention

본 발명은 수중(水中)금속의 부식방지용 수처리제 조성물에 관한 것으로서, 더욱 상세하게는 다음 구조식(Ⅰ)로 표시되는 포스포노카르복실산 화합물, 트리아졸 화합물, 몰리브덴산염을 함유하고 있어 여러 수용액상에서 금속표면에 발생할 수 있는 부식방지 및 칼슘과 마그네슘을 포함한 미네랄 스케일의 형성을 억제하는 새로운 수처리제 조성물에 관한 것이다.The present invention relates to a water treatment agent composition for preventing corrosion of metals in water, and more particularly, containing a phosphonocarboxylic acid compound, a triazole compound, and a molybdate represented by the following structural formula (I). It relates to a novel water treatment composition which prevents corrosion that may occur on the surface and inhibits the formation of mineral scales including calcium and magnesium.

상기식에서, n 은 0 또는 1 이며, n 이 0 일때 R2와 R3은 서로 같거나 다른 것으로서, 각각 수소원자, 수산기, C1~ C4의 알킬기, 알릴기, -CH2PO3H2, 또는 -CH(COOH)CH2COOH를 나타낸다. n이 1일때는 R1및 R2가 수소원자이면 R3은 수소원자, 수산기, C1~ C4의 알킬기 또는 -CH2CH2COOH를 나타내고, R1이 메틸기이면 R2및 R3은 수소원자이다.Wherein n is 0 or 1, and when n is 0, R 2 and R 3 are the same as or different from each other, and are each hydrogen atom, hydroxyl group, C 1 -C 4 alkyl group, allyl group, -CH 2 PO 3 H 2 Or -CH (COOH) CH 2 COOH. When n is 1, when R 1 and R 2 are hydrogen atoms, R 3 represents a hydrogen atom, a hydroxyl group, an alkyl group of C 1 to C 4 or -CH 2 CH 2 COOH, and if R 1 is a methyl group, R 2 and R 3 are It is a hydrogen atom.

금속이 에너지를 발산하여 산화 및 부식되는 현상은 금속 본연의 모습으로 되돌아 가려는 지극히 정상적인 자연현상이다. 금속이 물과 같은 전해질과 접촉되면 금속면에 접해있는 전해질의 상태는 불균일하게 되어 금속표면에 전위차를 형성하게 되고, 또한 금속표면에 부식생성물이나 스케일, 슬라임 등이 부착될 경우 용존산소의 양에 따라 국부부식이 발생하게 되므로 실제 산업현장에 설치된 냉각공조의 열교환기를 비롯한 수배관의 각종 산업용 설비에서 부식 및 스케일 발생은 순환시스템에서 커다란 장애가 되고 있는 실정이다. 특히, 개방 순환식 냉각수계는 고농축으로 운전하게 되므로 용해되어 있는 염이 열교환기 등의 열전달면에 다공질의 침전물을 형성하고 이에 의해 국부부식을 유발하거나 칼슘염, 마그네슘염 등의 스케일이 발생하게 된다.The oxidization and corrosion of metals by the release of energy is a very normal natural phenomenon that tries to return to the natural state of metal. When a metal comes into contact with an electrolyte such as water, the state of the electrolyte in contact with the metal surface becomes uneven to form a potential difference on the metal surface. Also, when corrosion products, scales, or slime adhere to the metal surface, the amount of dissolved oxygen Accordingly, since local corrosion occurs, corrosion and scale generation in the various industrial facilities of water pipes including heat exchangers of cooling and air conditioning installed in actual industrial sites become a big obstacle in the circulation system. In particular, since the open circulation cooling water system operates at a high concentration, dissolved salts form a porous precipitate on the heat transfer surface of a heat exchanger, thereby causing local corrosion or generating scales such as calcium salts and magnesium salts. .

이러한 문제점을 피하기 위한 기존의 수처리제 조성물로는 아크릴아미드계 중합체와 크롬염을 함유하거나 크롬염과 정인산염, 폴리포스포네이트를 함유한 것 등이 잘 알려져 있다. 특히, 유기 포스포노카르복실산 또는 포스피노카르복실산은 칼슘을 비롯한 미네랄 스케일의 형성을 억제하고 부식을 방지하는데 유용하다고 알려져 있는 바, 미합중국특허 제3,933,427호에는 포스포노숙신산 및 2-포스포노부탄-1,2,4-트리카르복실산이 기술되어 있으며 ; 미합중국특허 제4,042,324호에는 카르복시메탄-포스폰산 및 1-카르복시프로판-2-포스폰산이 기술되어 있고 ; 미합중국특허 제4,052,160호에는 2-포스포노아세트산, 2-포스포노-프로피온산, 2,3-디-포스포노프로피온산, 2,4-디포스포노부티르산 및 2-포스포노메틸아크릴산이 기술되어 있으며 ; 미합중국특허 제4,159,946호에는 아크릴산 및 차아인산과의 반응에 의한 텔로머릭(telomeric)생성물, 아크릴산 및 부틸 차아인산염의 생성물이 기술되어 있고 ; 미합중국특허 제4,606,890호에는 부식방지시 상승효과를 갖는 특정한 금속이온(예를들면, 아연, 카드뮴, 망간, 철 및 크로뮴)과 함께 사용되는 2-하이드록시포스포노아세트산이 기술되어 있다.Existing water treatment composition to avoid such a problem is well known that contains acrylamide-based polymers and chromium salts, chromium salts, phosphates, polyphosphonates and the like. In particular, organic phosphonocarboxylic acids or phosphinocarboxylic acids are known to be useful for inhibiting the formation of mineral scales, including calcium, and for preventing corrosion. US Pat. 1,2,4-tricarboxylic acids are described; US Patent No. 4,042,324 describes carboxymethane-phosphonic acid and 1-carboxypropane-2-phosphonic acid; US Pat. No. 4,052,160 describes 2-phosphonoacetic acid, 2-phosphono-propionic acid, 2,3-di-phosphonopropionic acid, 2,4-diphosphonobutyric acid and 2-phosphonomethylacrylic acid; US Pat. No. 4,159,946 describes the products of telomeric products, acrylic acid and butyl hypophosphite by reaction with acrylic acid and hypophosphorous acid; US Pat. No. 4,606,890 describes 2-hydroxyphosphonoacetic acid for use with certain metal ions (eg, zinc, cadmium, manganese, iron and chromium) that have synergistic effects on corrosion protection.

그러나 상기와 같은 종래의 수처리제 조성물들은 부식을 방지하는 효과나 스케일을 억제하는 능력에서 다소 차이는 있지만 만족할 만한 성과를 기대할 수 없을 뿐만 아니라 특히, 크롬염과 같은 중금속에 의존하는 경우에는 공해유발, 인체독성, 안정성 등의 여러 문제점을 내포하고 있다.However, the conventional water treatment composition as described above is somewhat different in the effect of preventing corrosion or the ability to suppress scale, but can not expect satisfactory performance, in particular, depending on heavy metals such as chromium salt, pollution-induced, human body It has several problems such as toxicity and stability.

이에, 본 발명에서는 상기 종래의 수처리제 조성물의 문제점을 해결하기 위하여 상기 구조식(Ⅰ)로 표시되는 포스포노카르복실산, 트리아졸 화합물 및 몰리브덴산염을 함유한 수처리제 조성물을 제조하므로써 본 발명을 완성하였다.Thus, in the present invention, in order to solve the problems of the conventional water treatment agent composition, the present invention was completed by preparing a water treatment agent composition containing a phosphonocarboxylic acid, a triazole compound, and molybdate represented by the structural formula (I).

본 발명은 수중금속의 부식을 방지하고 스케일 억제능력이 우수하면서 사용이 간편하고 안전한 수처리제 조성물을 제공하는데 그 목적이 있다.An object of the present invention is to provide a water treatment agent composition which is easy to use and safe while preventing corrosion of metals under water and having excellent scale suppression ability.

이하, 본 발명을 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in detail.

본 발명은 수중금속의 부식방지용 수처리제 조성물에 있어서, 상기 조성물중에 다음 구조식(Ⅰ)로 표시되는 포스포노카르복실산 화합물이 0.5 ~ 40중량%, 몰리브덴산염이 0.5 ~ 30중량% 그리고 트리아졸 화합물이 0.1 ~ 10중량% 함유되어 있는 것을 특징으로 한다.The present invention provides a water treatment agent composition for preventing corrosion of metals in water, wherein 0.5 to 40% by weight of phosphonocarboxylic acid compound, 0.5 to 30% by weight of molybdate salt and triazole compound are represented in the composition. It is characterized by containing 0.1 to 10% by weight.

상기식에서, R1, R2, R3및 n은 상기에서 정의한 바와같다.Wherein R 1 , R 2 , R 3 and n are as defined above.

또한, 본 발명은 상기 수처리제 조성물을 수배관(水配管)중의 물 1ℓ당 1 ~ 500 mg 투여하여 수중금속의 부식을 억제하는 방법을 포함한다.In addition, the present invention includes a method of inhibiting corrosion of metal in water by administering 1 to 500 mg of the water treatment agent composition per liter of water in a water pipe.

이와같은 본 발명을 더욱 상세히 설명하면 다음과 같다.Referring to the present invention in more detail as follows.

본 발명에 따른 수처리제 조성물은 상기 구조식(Ⅰ)로 표시되는 포스포노카르복실산 화합물, 몰리브덴산염 및 트리아졸 화합물 이외에도 물을 비롯하여 인산화합물 등 기타 공지의 부식방지제 및 스케일 분산제를 함께 함유한다.In addition to the phosphonocarboxylic acid compound, molybdate and triazole compound represented by the above structural formula (I), the water treatment agent composition according to the present invention contains water as well as other known corrosion inhibitors and scale dispersants such as phosphoric acid compounds.

상기 구조식(Ⅰ)로 표시되는 포스포노카르복실산 화합물은 전체 수처리제 조성물중에 0.5 ~ 40중량% 바람직하기로는 1.0 ~ 30중량% 함유되는 바, 만약 그 함량이 0.5중량% 미만이면 냉각수계에 부식 및 스케일이 생길 가능성이 있고 40중량%를 초과하면 필요이상의 효과를 나타낼 수도 있으며 경제성이 떨어진다.The phosphonocarboxylic acid compound represented by the structural formula (I) is contained in the total water treatment composition 0.5 to 40% by weight, preferably 1.0 to 30% by weight, if the content is less than 0.5% by weight in the cooling water system and There is a possibility of scale, and if it exceeds 40% by weight, it may have more than necessary effect and it is economical.

몰리브덴산염은 본 발명에서 금속의 부식반응중 양극 반응억제 기능을 하는 것으로서 소디움 몰리브데이트 또는 포타슘 몰리브데이트를 사용할 수 있으며, 이들은 전체 수처리제 조성물중에 0.5 ~ 30중량% 바람직하기로는 1.5 ~ 25중량% 함유된다. 만약, 몰리브덴산염의 사용량이 0.5중량% 미만이면 방식능력이 저하되고 30중량% 초과하면 경제성이 떨어진다.Molybdate salts can be used as sodium bibdate or potassium molybdate as a function of inhibiting the anode reaction during the corrosion reaction of the metal in the present invention, these are 0.5 to 30% by weight, preferably 1.5 to 25% by weight in the total water treatment composition It is contained. If the amount of molybdate is less than 0.5% by weight, the anticorrosive ability is lowered, and if it exceeds 30% by weight, economical efficiency is lowered.

그리고 트리아졸은 본 발명에서 구리 및 구리화합물에 대하여 방식기능을 갖는 것으로서 벤조트리아졸, 토릴트리아졸, 머캅토벤조트리아졸 등을 사용할 수 있으며 전체 수처리제 조성물중에 0.1 ~ 10중량% 바람직하게는 0.5 ~ 5중량% 함유된다. 만약 트리아졸의 사용량이 0.1중량% 미만이면 방식능력이 저하되고 10중량%을 초과하면 경제성이 떨어진다.In addition, benzotriazole, tolyltriazole, mercaptobenzotriazole, and the like may be used as the triazole having anticorrosive function with respect to copper and copper compounds in the present invention, and 0.1 to 10% by weight of the total water treatment composition, preferably 0.5 to 5 weight%. If the amount of triazole used is less than 0.1% by weight, the anticorrosive ability is lowered.

상기에서 예시한 화합물 이외에도 본 발명의 수처리제 조성물에는 인산화합물을 비롯하여 통상의 부식방지제 및 스케일 분산제를 함유한다. 인산화합물로는 인산 및 이들의 염 예를들면 모노소디움 하이드로겐 포스페이트, 디소디움 하이드로겐 포스페이트, 트리소디움 포스페이트, 칼륨 헥사메타 포스페이트, 소디움 트리부틸포스페이트, 칼륨 트리부틸포스페이트, 소디움 피로포스페이트, 칼륨 피로포스페이트 등이다. 이러한 인산화합물은 전체 수처리제 조성물중에 0.1 ~ 40중량% 바람직하게는 0.5 ~ 30중량%로 사용하는 것이 적당하다. 만약 그 사용량이 0.1중량% 미만이면 방식효과가 거의 없으며 40중량%를 초과하면 칼슘염 스케일을 유발시킬 수 있다. 또한, 본 발명에 따른 수처리제 조성물에 투입되는 통상의 부식방지제 및 스케일 분산제로는 아연염, 벤조산염, 말레인산 중합체, 폴리아크릴레이트, 아크릴 아미드계 공중합체 화합물 등이다.In addition to the compounds exemplified above, the water treatment composition of the present invention contains a conventional corrosion inhibitor and scale dispersant including a phosphoric acid compound. Phosphoric acid compounds include phosphoric acid and salts thereof such as monosodium hydrogen phosphate, disodium hydrogen phosphate, trisodium phosphate, potassium hexameta phosphate, sodium tributyl phosphate, potassium tributyl phosphate, sodium pyrophosphate, potassium pyrophosphate And so on. The phosphoric acid compound is suitably used in an amount of 0.1 to 40% by weight, preferably 0.5 to 30% by weight in the total water treatment composition. If the amount is less than 0.1% by weight, there is almost no anticorrosive effect. If the amount is more than 40% by weight, it may cause calcium salt scale. In addition, typical corrosion inhibitors and scale dispersants introduced into the water treatment agent composition according to the present invention include zinc salts, benzoates, maleic acid polymers, polyacrylates, acrylamide copolymer compounds and the like.

상기와 같은 본 발명의 수처리제 조성물은 각종 산업용 수배관에서 발생할 수 있는 부식을 방지하고 스케일을 억제하는데 보다 효과적으로 사용될 수 있으므로 개방 또는 밀폐 순환식 냉각수계, 일괄식 냉각수계가 사용 대상이 될 수 있다. 그 중에서도 본 발명의 수처리제 조성물은 농축운전으로 염류가 농축되어 부식성과 스케일 성향이 높은 개방 순환식 냉각수계의 수처리제로서 사용되는 것이 특히 바람직하다.As the water treatment agent composition of the present invention as described above can be used more effectively to prevent corrosion and inhibit scale that may occur in various industrial water pipes, an open or closed circulation cooling water system and a batch cooling water system may be used. Especially, it is especially preferable that the water treatment agent composition of this invention is used as a water treatment agent of an open circulation type cooling water system in which salts are concentrated by a concentration operation and its corrosion property and scale tendency are high.

본 발명의 수처리제 조성물을 각종 산업용 수배관의 수처리제로 사용하여 금속의 부식을 억제시키기 위해서는 물 1ℓ당 1 ~ 500 mg을 사용하게 되는데 만약 수처리제의 사용량이 1 mg 미만이면 원하는 부식방지효과를 얻을 수 없고 500 mg 초과 사용하는 것은 비경제적이다.In order to suppress corrosion of metals by using the water treatment composition of the present invention as a water treatment agent for various industrial water pipes, 1 to 500 mg per 1 liter of water is used. If the amount of the water treatment agent is less than 1 mg, the desired corrosion protection effect cannot be obtained. Use above 500 mg is uneconomical.

이하, 본 발명을 실시예에 의거하여 상세히 설명하면 다음과 같은 바, 본 발명이 실시예에 의해 한정되는 것은 아니다.Hereinafter, the present invention will be described in detail with reference to the following Examples, but the present invention is not limited by the Examples.

[실시예 1 ~ 3 및 비교예 1 ~ 3][Examples 1-3 and Comparative Examples 1-3]

다음 표 1의 조성비로 하여 수처리제 조성물을 제조하였다.Next, a water treatment composition was prepared as the composition ratio of Table 1.

[실험예]Experimental Example

상기 실시예 1 ~ 3 및 비교예 1 ~ 3에서 제조된 수처리제 조성물에 대한 부식도를 알아보기 위해, 다음 표 2에 나타낸 시험수질 A, B 및 C 각각 1ℓ당 수처리제 조성물 100 mg을 첨가하고 45 ℃로 맞춘다음 여기서 탄소강 시험편(0.218 dm2)을 넣고 회전속도 170 rpm으로 5일간 회전시켰다. 그 결과는 다음 표 3에 나타내었다.In order to determine the degree of corrosion of the water treatment agent compositions prepared in Examples 1 to 3 and Comparative Examples 1 to 3, 100 mg of the water treatment agent composition was added per 1 L of test water quality A, B, and C shown in Table 2 below, After this, the carbon steel test piece (0.218 dm 2 ) was put therein and rotated at 170 rpm for 5 days. The results are shown in Table 3 below.

(1) pH : 0.5N 수산화나트륨 수용액으로 조절하였다.(1) pH: It adjusted to 0.5N sodium hydroxide aqueous solution.

(2) MAlk : M-알칼리도(2) MAlk: M-alkalido

(3) CaH : 칼슘경도(3) CaH: calcium hardness

(4) MgH : 마그네슘경도(4) MgH: Magnesium Hardness

(5) Cl-: 염화이온농도(5) Cl -: chloride ion concentration

상기 표 3에 의하면 본 발명에 따른 실시예 1 내지 3의 수처리 조성물을 포함한 시험수질 A, B 및 C에서의 부식속도는 비교예 1 내지 3의 수처리 조성물을 포함한 시험수질 A, B 및 C에서의 부식속도 보다 훨씬 작았다. 따라서 본 발명에 의해 제조된 수처리 조성물은 수용액상에서 금속의 부식을 방지효과가 매우 우수함을 알 수 있다.According to Table 3, the corrosion rates in the test waters A, B and C including the water treatment compositions of Examples 1 to 3 according to the present invention are measured in the test water quality A, B and C including the water treatment compositions of Comparative Examples 1 to 3. It was much smaller than the corrosion rate. Therefore, the water treatment composition prepared by the present invention can be seen that the effect of preventing the corrosion of the metal in the aqueous solution is very excellent.

또한, 본 발명에 따른 실시예 1 내지 3의 수처리 조성물과 종래기술(대한민국특허출원 제88-2927호)의 부식속도를 비교하기 위하여 종래기술에서의 수질조건과 유사한 시험수질 A에서의 실시예 1 내지 3의 부식속도를 비교하였다. 그 결과는 다음 표 4에 나타내었다.Further, in order to compare the corrosion rates of the water treatment compositions of Examples 1 to 3 and the prior art (Korean Patent Application No. 88-2927) according to the present invention, Example 1 in the test water A similar to the water conditions in the prior art. Corrosion rates of 3 to 3 were compared. The results are shown in Table 4 below.

종래기술(대한민국특허출원 제88-2927호)은 방식형태가 침전피막형을 나타내므로 경우에 따라서는 금속표면위의 피막 밀착성이 다소 뒤질수도 있으며 수질조건에 따라 금속의 부식을 억제할 수 있는 능력이 부족할 수도 있다.In the prior art (Korean Patent Application No. 88-2927), since the anticorrosion type shows a sedimentation coating type, the adhesion of the film on the metal surface may be somewhat inferior, and the ability to suppress metal corrosion depending on the water quality conditions. This may be lacking.

그러나, 본 발명은 산화피막형, 침전피막형, 금속이온 침전피막형을 겸비하고 있으므로 금속표면에서 발생할 수 있는 전기화학 반응인 양극과 음극을 억제하여 부식이 일어날 수 있는 조건을 최대한 축소시킴으로써 뛰어난 방식효과를 기대할 수 있다.However, the present invention combines anodized, sedimented, and metal ion sedimentary coatings, thereby suppressing the anode and cathode, which are electrochemical reactions that may occur on the metal surface, to minimize the corrosion conditions. You can expect the effect.

Claims (2)

물과 통상의 부식방지제 및 스케일 분산제가 함유된 수중금속의 부식방지용 수처리제 조성물에 있어서, 다음 구조식(Ⅰ)로 표시되는 포스포노카르복실산 화합물이 0.5 ~ 40 중량%; 소디움 몰리브데이트 및 포타슘 몰리브데이트 중에서 선택된 몰리브덴산염이 0.5 ~ 30 중량%; 그리고 벤조트리아졸, 토릴트리아졸 및 머캅토벤조트리아졸 중에서 선택된 트리아졸 화합물이 0.1 ~ 10 중량% 함유되어 있는 것을 특징으로 하는 수처리제 조성물.In the water treatment agent composition for preventing corrosion of metals in water containing water and a conventional corrosion inhibitor and scale dispersant, 0.5 to 40% by weight of a phosphonocarboxylic acid compound represented by the following structural formula (I); 0.5 to 30% by weight of molybdate selected from sodium molybdate and potassium molybdate; And 0.1 to 10% by weight of a triazole compound selected from benzotriazole, tolyltriazole and mercaptobenzotriazole. 상기 식에서, n 은 0 또는 1이다. n 이 0 일때 R2와 R3은 서로 같거나 다른 것으로서, 각각 수소원자, 수산기, C1~C4의 알킬기, 알릴기, -CH2PO3H2, 또는 -CH(COOH)CH2COOH 를 나타낸다. n이 1 일 때 R1및 R2가 수소원자이면 R3은 수소원자, 수산기, C1~C4의 알킬기 또는 -CH2CH2COOH를 나타내고, R1이 메틸기이면 R2및 R3은 수소원자이다.Wherein n is 0 or 1. When n is 0, R 2 and R 3 are the same as or different from each other, and each hydrogen atom, hydroxyl group, C 1 -C 4 alkyl group, allyl group, -CH 2 PO 3 H 2 , or -CH (COOH) CH 2 COOH Indicates. When n is 1, when R 1 and R 2 are hydrogen atoms, R 3 represents a hydrogen atom, a hydroxyl group, a C 1 -C 4 alkyl group or -CH 2 CH 2 COOH, and if R 1 is a methyl group, R 2 and R 3 are It is a hydrogen atom. 상기 제1항의 수처리제 조성물을 수배관(水配管) 중의 물 1ℓ당 1 ~ 500 mg 투여하는 것을 특징으로 하는 수중금속의 부식억제방법.A method for inhibiting corrosion of underwater metals, comprising administering 1 to 500 mg of the water treatment composition of claim 1 per liter of water in a water pipe.
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Publication number Priority date Publication date Assignee Title
KR100934197B1 (en) * 2009-04-14 2009-12-29 주식회사 러스트케미칼 Corrosion inhibitor for biodegradable anti-corrosion resin composition, biodegradable anti-corrosion resin composition and anti-corrosion film comprising the same, and method of manufacturing the anti-corrosion film

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100934197B1 (en) * 2009-04-14 2009-12-29 주식회사 러스트케미칼 Corrosion inhibitor for biodegradable anti-corrosion resin composition, biodegradable anti-corrosion resin composition and anti-corrosion film comprising the same, and method of manufacturing the anti-corrosion film

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