WO2014162421A1 - Cooling-water treatment agent for circulation system - Google Patents
Cooling-water treatment agent for circulation system Download PDFInfo
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- WO2014162421A1 WO2014162421A1 PCT/JP2013/059884 JP2013059884W WO2014162421A1 WO 2014162421 A1 WO2014162421 A1 WO 2014162421A1 JP 2013059884 W JP2013059884 W JP 2013059884W WO 2014162421 A1 WO2014162421 A1 WO 2014162421A1
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- sodium
- acid
- cooling water
- water treatment
- treatment agent
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Classifications
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- 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
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/08—Materials not undergoing a change of physical state when used
- C09K5/10—Liquid materials
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/02—Non-contaminated water, e.g. for industrial water supply
- C02F2103/023—Water in cooling circuits
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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
- C02F2303/00—Specific treatment goals
- C02F2303/08—Corrosion inhibition
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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
Definitions
- the present invention relates to a cooling water treatment agent for a circulation system, and more specifically, contains saccharides, has high safety, can exhibit anticorrosion performance against copper and copper alloys for a long time, and is biodegradable.
- the present invention relates to a cooling water treatment agent for circulation system containing an anticorrosive component having excellent properties and a method for using the cooling water treatment agent for circulation system.
- the cooling water treatment agent for circulatory systems alone has performance such as anti-corrosion, anti-scaling and anti-slime properties for circulatory cooling water used for cooling plants such as chemical factories and food factories, or for building air conditioning. Or an additive for applying in combination.
- a cooling water treatment agent for a circulation system composed of food additives, food-derived components, etc. is used in order to improve safety.
- Anticorrosives with food additives and food-derived ingredients as constituents can hardly improve the effect, and currently, benzotriazole, tolyltriazole, etc. are used as anticorrosives for copper and copper alloys. Improvements are needed to increase safety.
- Patent Document 1 discloses (A) diesters made using fatty acids having carbon numbers of C 6 to C 20 , and more than diesters. 0.3 to 10 parts by mass of sucrose fatty acid ester rich in polyester; (B) 1 to 20 parts by mass of ethyl alcohol; (C) 50 to 98 parts by mass of propylene glycol; (D) 0 to 20 parts by mass of D-sorbitol or glycerin (E) sodium tripolyphosphate or trisodium phosphate 3 to 0 to 0.01 parts by mass, and the total amount of the components (A), (B), (C), (D) and (E) is 100 parts by mass A rust preventive composition is disclosed.
- Patent Document 2 discloses a composition for removing a polyimide coating, which is about 5 mass based on the total mass of the composition. % To about 90% by weight polar solvent, about 0.01% to about 50% by weight alkaline compound, and about 100 ppm to about 15% by weight benzotriazole derivatives, sugar alcohol derivatives and organic phenol compounds and mixtures thereof. A composition comprising a metal corrosion inhibitor selected from the group is disclosed.
- sugar alcohol derivatives include maltitol, polydextrose, xylitol, lactitol, mannitol, maltitol syrup, isomaltitol, sorbitol, and mixtures thereof.
- Patent Document 3 contains an antifreezing material and a corrosion inhibitor composed of at least one selected from gluconate, sugar alcohol, sorbitan, sorbitan fatty acid ester, polyethylene adduct of sorbitan fatty acid ester and saccharide.
- An antifreezing agent characterized by this is disclosed.
- sugar alcohols include sorbitol, mannitol, maltitol, and inositol.
- monosaccharides, small saccharides, and polysaccharides are listed as saccharides. Specifically, sucrose is exemplified.
- Patent Document 4 discloses a composition consisting essentially of (A) sorbitol, (B) a compound selected from the group consisting of benzotriazole and tolyltriazole, and (C) a water-soluble phosphate. Yes.
- sorbitol is added to circulating water containing calcium sulfate dihydrate, magnesium sulfate heptahydrate, sodium bicarbonate and sodium chloride, and has anticorrosion performance against copper and brass. Is also described.
- JP-A 49-65346 Special table 2010-514875 gazette JP 2004-59793 A JP-A-55-21582
- the rust preventive composition disclosed in Patent Document 1 uses the sucrose fatty acid ester as described above as a rust preventive component, but it dissolves even if the sucrose fatty acid ester is added to the circulating cooling water treatment agent. However, it is difficult to dissolve, and there is a problem that it does not dissolve even when the cooling water treatment agent for circulating system is added to the cooling water for circulating system. Further, the composition for removing the polyimide coating disclosed in Patent Document 2 uses a sugar alcohol derivative such as sorbitol as a metal corrosion inhibitor, but only the sugar alcohol derivative is treated with a circulating cooling water treatment. Even if it is added to the agent, there is a problem that the anticorrosive effect cannot be obtained.
- Patent Document 3 is added with a sugar alcohol such as sorbitol or a sugar such as sucrose as an anti-corrosion agent. Is sprayed on the road surface as a solid and is disclosed to have anticorrosion ability against iron, but there is no description of anticorrosion performance against copper or copper alloy in cooling water for circulation system.
- Patent Document 4 discloses an example in which sorbitol alone is blended as a comparative product, and also describes that it has corrosion resistance against copper and brass.
- sugar alcohols such as sorbitol are circulated alone. There is a problem that even if it is added to the system cooling water treatment agent, the anticorrosion effect cannot be obtained.
- the object of the present invention is to have a good anticorrosion performance for copper and copper alloys as a cooling water treatment agent for circulation system, and there is no problem in safety even when used in food plants and the like, and biodegradability.
- Another object of the present invention is to provide a cooling water treatment agent for circulation system containing an anticorrosive component excellent in water and a method for using the cooling water treatment agent for circulation system.
- the present invention comprises (A) one or more disaccharides; and (C) an additive for circulating water treatment agent for circulation system, characterized in that it contains a cooling water treatment agent for circulation system. It is related to.
- cooling water treatment agent for circulating system of the present invention is characterized by further comprising (B) one or more sugar alcohols.
- the cooling water treatment agent for circulating system contains (A) disaccharide concentration of 0.1 to 100 ppm by mass and (B) sugar alcohols, (B) sugar alcohols And adding to the cooling water for the circulation system so that the concentration of the water becomes 0.1 to 100 ppm by mass.
- the effect of the present invention is that it has a good anticorrosion performance for copper and copper alloys as a cooling water treatment agent for circulation system, and there is no problem in safety and excellent biodegradability even when used in food plants and the like.
- Another object of the present invention is to provide a cooling water treatment agent for a circulation system containing an anticorrosive component and a method for using the cooling water treatment agent for a circulation system.
- the cooling water treatment agent for circulation system comprises (A) one or more disaccharides; and (C) an additive for cooling water treatment agent for circulation system. It is.
- disaccharide (A) that can be used in the cooling water treatment agent for circulating system of the present invention
- disaccharides can be used alone or in combination of two or more.
- (A) disaccharide functions as an anticorrosive component for copper and copper alloys and has excellent biodegradability.
- BOD Biochemical Oxygen Consumption
- sugar alcohols can be blended with the cooling water treatment agent for circulating system of the present invention.
- sugar alcohols that can be used in the cooling water treatment agent for circulating system of the present invention include, for example, erythritol, threitol, arabinitol, xylitol, ribitol, iditol, galactitol, sorbitol, mannitol, boremitol, Perseitol and the like can be mentioned. These sugar alcohols can be used alone or in combination of two or more.
- (B) sugar alcohols function in order to supplement the anticorrosion performance of copper and copper alloys of (A) disaccharide by using together with (A) disaccharide, and are excellent in biodegradability,
- the amount of decomposition determined in accordance with JIS K0102 Industrial Wastewater Test Method 21 Biochemical Oxygen Consumption (BOD) is 82% by mass of xylitol, 82% by mass of sorbitol, and 67% by mass of mannitol.
- the mixing ratio is (B) with respect to 1 part by mass of (A) disaccharide.
- Sugar alcohols in the range of 0.01 to 100 parts by mass, preferably 0.02 to 50 parts by mass.
- the blending amount of (B) sugar alcohols is less than 0.01 parts by weight with respect to 1 part by weight of (A) disaccharides, the blending effect of sugar alcohols is not manifested. If the amount exceeds 100 parts by mass, the anticorrosive effect of the disaccharide may be inhibited, which is not preferable.
- (A) disaccharide, or (A) disaccharide, and (B) sugar alcohols are blended into the circulating cooling water treatment agent, so that copper and copper are added to the circulating cooling water treatment agent. It is possible to impart anticorrosion performance to the alloy.
- the blending amount of the (A) disaccharide in the circulating system cooling water treatment agent of the present invention is 0.0001 to 20% by mass, preferably 0.001 to 10% by mass.
- the blending amount of (A) disaccharide is less than 0.0001% by mass in the anti-corrosive circulatory coolant treatment agent, it is not preferable because sufficient anti-corrosion performance for copper and copper alloys cannot be imparted. Even if it mixes exceeding mass%, since the blending effect of (A) disaccharide is saturated, it is not preferable.
- the blending amount of (B) sugar alcohols is in the range of 0.0001 to 20% by mass, preferably 0.001 to 10% by mass. . If the blending amount of (B) sugar alcohols in the circulating coolant treatment agent is less than 0.0001% by mass, the blending effect is not manifested, and even if blended in excess of 20% by mass, (B) Since the blending effect of sugar alcohols is saturated, it is not preferable.
- the remainder of the circulating system coolant treatment agent of the present invention is composed of an additive for circulating system coolant treatment agent.
- the additive for the circulating water treatment agent include inorganic acids, inorganic acid salts, organic acids, phosphonic acids, sulfonic acids, alkali metal and alkaline earth metal hydroxides, amines, hydrazines, poly Acrylic acid, organic acid, organic acid salt, phosphonic acid, sulfonic acid, alkali metal and alkaline earth metal hydroxide, hypochlorous acid, heterocyclic compound, antiseptic, antibacterial agent, antifungal agent, Examples include antifoaming agents, surfactants, chelating agents, ammonia, ammonium salts, antioxidants, dyes, fragrances, glycols and glycol ethers.
- These additives for the circulating water treatment agent for the circulation system can be appropriately blended singly or in combination of two or more according to the characteristics required for the cooling water treatment agent for the circulation system.
- food additives and additives for circulating water treatment agents composed of food-derived components are particularly preferable.
- the cooling water treatment agent for circulating system of the present invention is added to the cooling water for circulating system so that the concentration of (A) disaccharide is in the range of 0.1 to 100 ppm by mass, preferably 1 to 50 ppm by mass. can do.
- concentration of (A) disaccharide exceeds 100 mass ppm, the effect of addition is saturated and the cost increases, which is not preferable.
- concentration of (A) disaccharide is 0.1 mass ppm. If it is less than 1, it is not preferable because sufficient anticorrosive effect cannot be obtained.
- the concentration of (B) sugar alcohols can also be added so as to be in the range of 0.1 to 100 ppm by mass, preferably 1 to 50 ppm.
- concentration of (B) sugar alcohol exceeds 100 ppm by mass, the effect of addition is saturated and the cost increases, which is not preferable. Further, the concentration of (B) sugar alcohol is 0.1. Less than mass ppm is not preferable because a sufficient anticorrosive effect cannot be obtained.
- Example 1 and Comparative Example 1 As shown in Table 1 below, (A) a disaccharide is added to the circulation system cooling water treatment agent basic formulation (1) to (2) described later, and (A) a disaccharide is added to the circulation containing an anticorrosive agent. A cooling water treatment agent for the system was prepared.
- Cooling water treatment agent basic composition for circulation system (2) Blending amount (% by mass) Sodium hypochlorite 5 48% sodium hydroxide 10 Sodium polyacrylate 20 Pure water 65 (Sodium polyacrylate has a mass average molecular weight of about 2000)
- the anti-corrosion test was done about the cooling water processing agent for circulating systems obtained as mentioned above.
- the anticorrosion test was conducted in accordance with JIS K0100 Industrial Corrosion Test Method Reference Rotation Method.
- the test water to which a predetermined amount of a corrosion factor has been added, the concentration of the cooling water treatment agent for the circulation system listed in the table, and the blank is 1 for the basic composition of the cooling water treatment agent for the circulation system (1) or (2), respectively. It added so that it might become mass%, and it was set as the test liquid.
- the corrosion factor and its predetermined amount are: sodium bicarbonate (reagent grade) 302 ppm, calcium chloride dihydrate (reagent grade) 176 ppm, magnesium sulfate heptahydrate (reagent grade) 286 ppm, sodium silicate No. 3 (reagent grade) 344 ppm, sodium sulfate (reagent grade) 6.8 ppm, sodium chloride (reagent grade) 403 ppm.
- Test piece used for anticorrosion test Copper (C1100P specified in JIS H3100) or brass (C2680 specified in JIS H3100) is attached to a rotating shaft, immersed in a test solution, and the test piece is rotated at a rotation speed of 150 to 160 rpm.
- the test was carried out at 50 ° C. for 30 days. After the test, the copper ion concentration eluted in the test solution was measured. As a result, the copper ion elution amount of each test solution was evaluated to be less than 0.1 ppm: ⁇ , 0.1 ppm to less than 1 ppm: ⁇ , 1 ppm to less than 2 ppm: ⁇ , 2 ppm or more: x. The obtained results are also shown in the table.
- Example 2 and Comparative Example 2 As shown in Table 3 below, (A) a disaccharide is mixed with a cooling water treatment agent basic composition (1) to (2) described later, and (A) a disaccharide and (B) a sugar alcohol are blended. Then, the resulting mixture was blended with the basic coolant (1) to (2) for circulation system cooling water to prepare a circulation system cooling water treatment agent. About the obtained cooling water processing agent for circulating systems, the anticorrosion test was done by the method similar to the said Example 1 and the comparative example 1. FIG. The obtained results are also shown in the table.
Abstract
This cooling-water treatment agent for a circulation system is characterized by including: at least one disaccharide (A); and an additive (C) for the cooling-water treatment agent for the circulation system. Furthermore, the cooling-water treatment agent for the circulation system can also include at least one sugar alcohol (B).
Description
本発明は、循環系用冷却水処理剤に関し、さらに詳細には、糖類を含有し、安全性が高く、かつ長時間にわたり銅および銅合金に対して防食性能を発揮することができ且つ生分解性に優れる防食成分を含有する循環系用冷却水処理剤および循環系用冷却水処理剤の使用方法に関する。
The present invention relates to a cooling water treatment agent for a circulation system, and more specifically, contains saccharides, has high safety, can exhibit anticorrosion performance against copper and copper alloys for a long time, and is biodegradable. The present invention relates to a cooling water treatment agent for circulation system containing an anticorrosive component having excellent properties and a method for using the cooling water treatment agent for circulation system.
循環系用冷却水処理剤は、化学工場、食品工場などのプラントの冷却、あるいはビル空調などに使用される循環系冷却水へ、防食性、スケール防止性並びにスライム防止性等の性能を単独で、または組み合わせて付与するための添加剤である。
The cooling water treatment agent for circulatory systems alone has performance such as anti-corrosion, anti-scaling and anti-slime properties for circulatory cooling water used for cooling plants such as chemical factories and food factories, or for building air conditioning. Or an additive for applying in combination.
例えば、食品工場のプラントなどでは、安全性を高めるために、食品添加物や食品由来成分などで構成される循環系用冷却水処理剤が使用されるが、銅および銅合金に対する防食性能は、食品添加物や食品由来成分などを構成成分とした防食剤ではなかなか効果を上げることができず、現状では、銅および銅合金用の防食剤として、ベンゾトリアゾール、トリルトリアゾールなどが用いられているが、安全性を高めるために改善が求められている。
For example, in a plant of a food factory, etc., a cooling water treatment agent for a circulation system composed of food additives, food-derived components, etc. is used in order to improve safety. Anticorrosives with food additives and food-derived ingredients as constituents can hardly improve the effect, and currently, benzotriazole, tolyltriazole, etc. are used as anticorrosives for copper and copper alloys. Improvements are needed to increase safety.
食品添加物、食品由来成分を構成成分とする防錆剤として、例えば、特許文献１には、（Ａ）Ｃ6～Ｃ20の炭素数を有する脂肪酸を用いて造られたジエステル、およびジエステル以上のポリエステルに富む蔗糖脂肪酸エステル０．３～１０質量部；（Ｂ）エチルアルコール１～２０質量部；（Ｃ）プロピレングリコール５０～９８質量部；（Ｄ）Ｄ－ソルビトール又はグリセリン０～２０質量部；（Ｅ）トリポリ燐酸ソーダまたは燐酸３ソーダ０～０．０１質量部とからなり、（Ａ）、（Ｂ）、（Ｃ）、（Ｄ）および（Ｅ）成分の合計量が１００質量部になるようにした防錆剤組成物が開示されている。
As anticorrosives comprising food additives and food-derived ingredients as constituents, for example, Patent Document 1 discloses (A) diesters made using fatty acids having carbon numbers of C 6 to C 20 , and more than diesters. 0.3 to 10 parts by mass of sucrose fatty acid ester rich in polyester; (B) 1 to 20 parts by mass of ethyl alcohol; (C) 50 to 98 parts by mass of propylene glycol; (D) 0 to 20 parts by mass of D-sorbitol or glycerin (E) sodium tripolyphosphate or trisodium phosphate 3 to 0 to 0.01 parts by mass, and the total amount of the components (A), (B), (C), (D) and (E) is 100 parts by mass A rust preventive composition is disclosed.
また、金属腐蝕防止剤として、糖アルコール誘導体を使用した組成物として、特許文献２には、ポリイミド被覆を除去するための組成物であって、該組成物の全質量に対して、約５質量％～約９０質量％の極性溶剤、約０．０１質量％～約５０質量％のアルカリ性化合物、及び約１００ｐｐｍ～約１５質量％のベンゾトリアゾール誘導体、糖アルコール誘導体および有機フェノール化合物並びにそれらの混合物からなる群から選択される金属腐食防止剤を含む組成物が開示されている。また、糖アルコール誘導体として、マルチトール、ポリデキストロース、キシリトール、ラクチトール、マンニトール、マルチトールシロップ、イソマルチトール、ソルビトールおよびそれらの混合物が例示されている。
In addition, as a composition using a sugar alcohol derivative as a metal corrosion inhibitor, Patent Document 2 discloses a composition for removing a polyimide coating, which is about 5 mass based on the total mass of the composition. % To about 90% by weight polar solvent, about 0.01% to about 50% by weight alkaline compound, and about 100 ppm to about 15% by weight benzotriazole derivatives, sugar alcohol derivatives and organic phenol compounds and mixtures thereof. A composition comprising a metal corrosion inhibitor selected from the group is disclosed. Examples of sugar alcohol derivatives include maltitol, polydextrose, xylitol, lactitol, mannitol, maltitol syrup, isomaltitol, sorbitol, and mixtures thereof.
さらに、特許文献３には、凍結防止材と、グルコン酸塩、糖アルコール、ソルビタン、ソルビタン脂肪酸エステル、ソルビタン脂肪酸エステルのポリエチレン付加物および糖類から選ばれる少なくとも一種以上からなる腐食防止剤とを含有することを特徴とする凍結防止剤が開示されている。また、糖アルコールとして、ソルビット、マンニット、マルチトールまたはイノシトールが例示されている。さらに、糖類として、単糖類、小糖類、多糖類が挙げられており、具体的には、蔗糖が例示されている。
Furthermore, Patent Document 3 contains an antifreezing material and a corrosion inhibitor composed of at least one selected from gluconate, sugar alcohol, sorbitan, sorbitan fatty acid ester, polyethylene adduct of sorbitan fatty acid ester and saccharide. An antifreezing agent characterized by this is disclosed. Examples of sugar alcohols include sorbitol, mannitol, maltitol, and inositol. Furthermore, monosaccharides, small saccharides, and polysaccharides are listed as saccharides. Specifically, sucrose is exemplified.
また、特許文献４には、（Ａ）ソルビトール、（Ｂ）ベンゾトリアゾール及びトリルトリアゾールから成る群から選ばれた化合物、及び（Ｃ）水溶性リン酸塩から実質的になる組成物が開示されている。また、硫酸カルシウム・２水和物、硫酸マグネシウム・７水和物、重炭酸ナトリウム及び塩化ナトリウムを含む循環水中にソルビトールを添加した試験例が開示されており、銅および真鍮に対する防食性能を有することも記載されている。
Patent Document 4 discloses a composition consisting essentially of (A) sorbitol, (B) a compound selected from the group consisting of benzotriazole and tolyltriazole, and (C) a water-soluble phosphate. Yes. In addition, a test example is disclosed in which sorbitol is added to circulating water containing calcium sulfate dihydrate, magnesium sulfate heptahydrate, sodium bicarbonate and sodium chloride, and has anticorrosion performance against copper and brass. Is also described.
特許文献１に開示された防錆剤組成物は、防錆成分として上述のような蔗糖脂肪酸エステルを使用するものであるが、蔗糖脂肪酸エステルを循環系冷却水処理剤へ添加しても、溶解しないか、溶解し難く、さらに循環系用冷却水処理剤を循環系用冷却水へ添加する際にも溶解しないという問題がある。
また、特許文献２に開示されたポリイミド被覆を除去するための組成物は、金属腐食防止剤としてソルビトールのような糖アルコール誘導体を使用するものであるが、糖アルコール誘導体のみを循環系冷却水処理剤へ添加しても、防食効果が得られないという問題がある。
さらに、特許文献３に開示された凍結防止剤には、腐蝕防止剤としてソルビット（ソルビトール）のような糖アルコールや、蔗糖のような糖類を添加するものであるが、特許文献２の凍結防止剤は固体として路面等に散布されるものであり、鉄に対して防食能力を有することが開示されているものの、循環系用冷却水における銅や銅合金に対する防食性能については何ら記載されていない。
また、特許文献４では、比較品としてソルビトールを単独で配合した例が開示されており、銅や真鍮に対する耐食性能を有することも記載されているが、ソルビトールのような糖アルコール類を単独で循環系冷却水処理剤へ添加しても、防食効果が得られないという問題がある。 The rust preventive composition disclosed in Patent Document 1 uses the sucrose fatty acid ester as described above as a rust preventive component, but it dissolves even if the sucrose fatty acid ester is added to the circulating cooling water treatment agent. However, it is difficult to dissolve, and there is a problem that it does not dissolve even when the cooling water treatment agent for circulating system is added to the cooling water for circulating system.
Further, the composition for removing the polyimide coating disclosed in Patent Document 2 uses a sugar alcohol derivative such as sorbitol as a metal corrosion inhibitor, but only the sugar alcohol derivative is treated with a circulating cooling water treatment. Even if it is added to the agent, there is a problem that the anticorrosive effect cannot be obtained.
Further, the anti-freezing agent disclosed in Patent Document 3 is added with a sugar alcohol such as sorbitol or a sugar such as sucrose as an anti-corrosion agent. Is sprayed on the road surface as a solid and is disclosed to have anticorrosion ability against iron, but there is no description of anticorrosion performance against copper or copper alloy in cooling water for circulation system.
In addition, Patent Document 4 discloses an example in which sorbitol alone is blended as a comparative product, and also describes that it has corrosion resistance against copper and brass. However, sugar alcohols such as sorbitol are circulated alone. There is a problem that even if it is added to the system cooling water treatment agent, the anticorrosion effect cannot be obtained.
また、特許文献２に開示されたポリイミド被覆を除去するための組成物は、金属腐食防止剤としてソルビトールのような糖アルコール誘導体を使用するものであるが、糖アルコール誘導体のみを循環系冷却水処理剤へ添加しても、防食効果が得られないという問題がある。
さらに、特許文献３に開示された凍結防止剤には、腐蝕防止剤としてソルビット（ソルビトール）のような糖アルコールや、蔗糖のような糖類を添加するものであるが、特許文献２の凍結防止剤は固体として路面等に散布されるものであり、鉄に対して防食能力を有することが開示されているものの、循環系用冷却水における銅や銅合金に対する防食性能については何ら記載されていない。
また、特許文献４では、比較品としてソルビトールを単独で配合した例が開示されており、銅や真鍮に対する耐食性能を有することも記載されているが、ソルビトールのような糖アルコール類を単独で循環系冷却水処理剤へ添加しても、防食効果が得られないという問題がある。 The rust preventive composition disclosed in Patent Document 1 uses the sucrose fatty acid ester as described above as a rust preventive component, but it dissolves even if the sucrose fatty acid ester is added to the circulating cooling water treatment agent. However, it is difficult to dissolve, and there is a problem that it does not dissolve even when the cooling water treatment agent for circulating system is added to the cooling water for circulating system.
Further, the composition for removing the polyimide coating disclosed in Patent Document 2 uses a sugar alcohol derivative such as sorbitol as a metal corrosion inhibitor, but only the sugar alcohol derivative is treated with a circulating cooling water treatment. Even if it is added to the agent, there is a problem that the anticorrosive effect cannot be obtained.
Further, the anti-freezing agent disclosed in Patent Document 3 is added with a sugar alcohol such as sorbitol or a sugar such as sucrose as an anti-corrosion agent. Is sprayed on the road surface as a solid and is disclosed to have anticorrosion ability against iron, but there is no description of anticorrosion performance against copper or copper alloy in cooling water for circulation system.
In addition, Patent Document 4 discloses an example in which sorbitol alone is blended as a comparative product, and also describes that it has corrosion resistance against copper and brass. However, sugar alcohols such as sorbitol are circulated alone. There is a problem that even if it is added to the system cooling water treatment agent, the anticorrosion effect cannot be obtained.
従って、本発明の目的は、循環系用冷却水処理剤として銅および銅合金に対して良好な防食性能を有し、かつ食品プラント等へ使用しても安全性に問題がなく且つ生分解性に優れた防食成分を含有する循環系用冷却水処理剤および循環系用冷却水処理剤の使用方法を提供することにある。
Therefore, the object of the present invention is to have a good anticorrosion performance for copper and copper alloys as a cooling water treatment agent for circulation system, and there is no problem in safety even when used in food plants and the like, and biodegradability. Another object of the present invention is to provide a cooling water treatment agent for circulation system containing an anticorrosive component excellent in water and a method for using the cooling water treatment agent for circulation system.
即ち、本発明は、（Ａ）１種または２種以上の二糖類；および（Ｃ）循環系用冷却水処理剤用添加剤を含有してなることを特徴とする循環系用冷却水処理剤に係るものである。
That is, the present invention comprises (A) one or more disaccharides; and (C) an additive for circulating water treatment agent for circulation system, characterized in that it contains a cooling water treatment agent for circulation system. It is related to.
また、本発明の循環系用冷却水処理剤は、さらに（Ｂ）１種または２種以上の糖アルコール類を含有してなることを特徴とする。
Further, the cooling water treatment agent for circulating system of the present invention is characterized by further comprising (B) one or more sugar alcohols.
また、本発明は、前記循環系用冷却水処理剤を、（Ａ）二糖類の濃度として０．１～１００質量ｐｐｍ、（Ｂ）糖アルコール類を含む場合には、（Ｂ）糖アルコール類の濃度として０．１～１００質量ｐｐｍとなるように循環系用冷却水に添加することを特徴とする循環系用冷却水処理剤の使用方法に係るものである。
In the present invention, when the cooling water treatment agent for circulating system contains (A) disaccharide concentration of 0.1 to 100 ppm by mass and (B) sugar alcohols, (B) sugar alcohols And adding to the cooling water for the circulation system so that the concentration of the water becomes 0.1 to 100 ppm by mass.
本発明の効果は、循環系用冷却水処理剤として銅および銅合金に対して良好な防食性能を有し、かつ食品プラント等へ使用しても安全性に問題がなく且つ生分解性に優れた防食成分を含有してなる循環系用冷却水処理剤および循環系用冷却水処理剤の使用方法を提供したことにある。
The effect of the present invention is that it has a good anticorrosion performance for copper and copper alloys as a cooling water treatment agent for circulation system, and there is no problem in safety and excellent biodegradability even when used in food plants and the like. Another object of the present invention is to provide a cooling water treatment agent for a circulation system containing an anticorrosive component and a method for using the cooling water treatment agent for a circulation system.
本発明の循環系用冷却水処理剤は、（Ａ）１種または２種以上の二糖類；および（Ｃ）循環系用冷却水処理剤用添加剤を含有してなることを特徴とするものである。
The cooling water treatment agent for circulation system according to the present invention comprises (A) one or more disaccharides; and (C) an additive for cooling water treatment agent for circulation system. It is.
ここで、本発明の循環系用冷却水処理剤に使用可能な（Ａ）二糖類としては、例えば、スクロース、ラクツロース、ラクトース、マルトース、トレハロース、セルビオース、コージビオース、ニゲロース、イソマルトース、イソトレハロース、ネオトレハロース、ソホロース、ラミナリビオース、ゲンチビオース、ツラノース、マルツロース、パラチノース、ゲンチオビウロース、マンノビオース、メリビオース、メリビウロース、ネオラクトース、ガラクトスクロース、シラビオース、ルチノース、ルチヌロース、ビシアノース、キシロビオース、プリメベロース、トレハロサミン、マルチトール、ラクトサミン、ラクチトール、スクラロースなどを挙げることができる。これらの二糖類は、単独で、または２種以上を組み合わせて用いることができる。なお、（Ａ）二糖類は、銅および銅合金に対する防食成分として機能すると共に、生分解性に優れており、ちなみにＪＩＳ Ｋ０１０２工業排水試験方法 ２１生物化学的酸素消費量（ＢＯＤ）に準拠して求めた分解量は、スクロース６５質量％、マルトース７０質量％、トレハロース６５質量％、マルチトール６５質量％、ラクチトール７２質量％である。
Here, as the disaccharide (A) that can be used in the cooling water treatment agent for circulating system of the present invention, for example, sucrose, lactulose, lactose, maltose, trehalose, cellobiose, cordobiose, nigerose, isomaltose, isotrehalose, neo Trehalose, sophorose, laminaribiose, gentibiose, turanose, maltulose, palatinose, gentiobiulose, mannobiose, melibiose, melibiulose, neolactosose, galactosucrose, silabiose, lutinose, lutinulose, vicyanose, xylobiose, primebellose multis Examples include lactosamine, lactitol, sucralose, and the like. These disaccharides can be used alone or in combination of two or more. In addition, (A) disaccharide functions as an anticorrosive component for copper and copper alloys and has excellent biodegradability. Incidentally, in accordance with JIS K0102 Industrial Wastewater Test Method 21 Biochemical Oxygen Consumption (BOD) The determined decomposition amounts are sucrose 65% by mass, maltose 70% by mass, trehalose 65% by mass, maltitol 65% by mass, and lactitol 72% by mass.
さらに、本発明の循環系用冷却水処理剤には、（Ａ）二糖類に加えて、（Ｂ）糖アルコール類を配合することができる。ここで、本発明の循環系用冷却水処理剤に使用可能な（Ｂ）糖アルコール類としては、例えば、エリトリトール、トレイトール、アラビニトール、キシリトール、リビトール、イジトール、ガラクチトール、ソルビトール、マンニトール、ボレミトール、ペルセイトールなどを挙げることができる。これらの糖アルコール類は、単独で、または２種以上を組み合わせて用いることができる。なお、（Ｂ）糖アルコール類は、（Ａ）二糖類と併用することにより（Ａ）二糖類の銅および銅合金に対する防食性能を補完するために機能すると共に、生分解性に優れており、ちなみにＪＩＳ Ｋ０１０２工業排水試験方法 ２１生物化学的酸素消費量（ＢＯＤ）に準拠して求めた分解量は、キシリトール８２質量％、ソルビトール８２質量％、マンニトール６７質量％である。
Furthermore, in addition to (A) disaccharide, (B) sugar alcohols can be blended with the cooling water treatment agent for circulating system of the present invention. Here, (B) sugar alcohols that can be used in the cooling water treatment agent for circulating system of the present invention include, for example, erythritol, threitol, arabinitol, xylitol, ribitol, iditol, galactitol, sorbitol, mannitol, boremitol, Perseitol and the like can be mentioned. These sugar alcohols can be used alone or in combination of two or more. In addition, (B) sugar alcohols function in order to supplement the anticorrosion performance of copper and copper alloys of (A) disaccharide by using together with (A) disaccharide, and are excellent in biodegradability, Incidentally, the amount of decomposition determined in accordance with JIS K0102 Industrial Wastewater Test Method 21 Biochemical Oxygen Consumption (BOD) is 82% by mass of xylitol, 82% by mass of sorbitol, and 67% by mass of mannitol.
なお、本発明の循環系用冷却水処理剤に（Ａ）二糖類と、（Ｂ）糖アルコール類を併用する場合、その配合割合は、（Ａ）二糖類の１質量部に対して（Ｂ）糖アルコール類０．０１～１００質量部、好ましくは０．０２～５０質量部の範囲内である。ここで、（Ｂ）糖アルコール類の配合量が（Ａ）二糖類の１質量部に対して０．０１質量部未満であると、糖アルコール類の配合効果が発現しないために好ましくなく、また、１００質量部を超えると、二糖類の防食効果を阻害することがあるために好ましくない。
In addition, when (A) disaccharide and (B) sugar alcohol are used together in the cooling water treatment agent for circulating system of the present invention, the mixing ratio is (B) with respect to 1 part by mass of (A) disaccharide. ) Sugar alcohols in the range of 0.01 to 100 parts by mass, preferably 0.02 to 50 parts by mass. Here, when the blending amount of (B) sugar alcohols is less than 0.01 parts by weight with respect to 1 part by weight of (A) disaccharides, the blending effect of sugar alcohols is not manifested. If the amount exceeds 100 parts by mass, the anticorrosive effect of the disaccharide may be inhibited, which is not preferable.
上述のように（Ａ）二糖類、または（Ａ）二糖類と、（Ｂ）糖アルコール類とを、循環系冷却水処理剤に配合することにより、循環系冷却水処理剤に、銅および銅合金に対する防食性能を付与することができる。本発明の循環系冷却水処理剤への（Ａ）二糖類の配合量は、０．０００１～２０質量％、好ましくは０．００１～１０質量％の範囲内である。防食剤の循環系冷却水処理剤へ（Ａ）二糖類の配合量が０．０００１質量％未満では、銅および銅合金に対する十分な防食性能を付与することができないために好ましくなく、また、２０質量％を超えて配合しても、（Ａ）二糖類の配合効果が飽和してしまうために好ましくない。
As described above, (A) disaccharide, or (A) disaccharide, and (B) sugar alcohols are blended into the circulating cooling water treatment agent, so that copper and copper are added to the circulating cooling water treatment agent. It is possible to impart anticorrosion performance to the alloy. The blending amount of the (A) disaccharide in the circulating system cooling water treatment agent of the present invention is 0.0001 to 20% by mass, preferably 0.001 to 10% by mass. When the blending amount of (A) disaccharide is less than 0.0001% by mass in the anti-corrosive circulatory coolant treatment agent, it is not preferable because sufficient anti-corrosion performance for copper and copper alloys cannot be imparted. Even if it mixes exceeding mass%, since the blending effect of (A) disaccharide is saturated, it is not preferable.
また、（Ｂ）糖アルコール類が配合されている場合には、（Ｂ）糖アルコール類の配合量は、０．０００１～２０質量％、好ましくは０．００１～１０質量％の範囲内である。循環系冷却水処理剤への（Ｂ）糖アルコール類の配合量が０．０００１質量％未満では、その配合効果が発現しないために好ましくなく、また、２０質量％を超えて配合しても、（Ｂ）糖アルコール類の配合効果が飽和してしまうために好ましくない。
When (B) sugar alcohols are blended, the blending amount of (B) sugar alcohols is in the range of 0.0001 to 20% by mass, preferably 0.001 to 10% by mass. . If the blending amount of (B) sugar alcohols in the circulating coolant treatment agent is less than 0.0001% by mass, the blending effect is not manifested, and even if blended in excess of 20% by mass, (B) Since the blending effect of sugar alcohols is saturated, it is not preferable.
さらに、本発明の循環系冷却水処理剤の残余は、循環系用冷却水処理剤用添加剤から構成される。循環系用冷却水処理剤用添加剤としては、例えば、無機酸類、無機酸塩類、有機酸類、ホスホン酸類、スルホン酸類、アルカリ金属およびアルカリ土類金属の水酸化物、アミン類、ヒドラジン類、ポリアクリル酸類、有機酸類、有機酸塩類、ホスホン酸類、スルホン酸類、アルカリ金属およびアルカリ土類金属の水酸化物類、次亜塩素酸類、複素環化合物類、防腐剤、防菌剤、防黴剤、消泡剤、界面活性剤、キレート剤、アンモニア、アンモニウム塩、酸化防止剤、染料、香料、グリコール類およびグリコールエーテル類等を例示することができる。これらの循環系用冷却水処理剤用添加剤は、１種を単独で、または２種以上を、循環系用冷却水処理剤に求められる特性に合わせて適宜配合することができる。
Furthermore, the remainder of the circulating system coolant treatment agent of the present invention is composed of an additive for circulating system coolant treatment agent. Examples of the additive for the circulating water treatment agent include inorganic acids, inorganic acid salts, organic acids, phosphonic acids, sulfonic acids, alkali metal and alkaline earth metal hydroxides, amines, hydrazines, poly Acrylic acid, organic acid, organic acid salt, phosphonic acid, sulfonic acid, alkali metal and alkaline earth metal hydroxide, hypochlorous acid, heterocyclic compound, antiseptic, antibacterial agent, antifungal agent, Examples include antifoaming agents, surfactants, chelating agents, ammonia, ammonium salts, antioxidants, dyes, fragrances, glycols and glycol ethers. These additives for the circulating water treatment agent for the circulation system can be appropriately blended singly or in combination of two or more according to the characteristics required for the cooling water treatment agent for the circulation system.
なかでも、食品添加物、食品由来成分から構成される循環系用冷却水処理剤用添加剤が特に好ましく、例えば、グルコン酸亜鉛、硫酸亜鉛、Ｌ－アスコルビン酸、Ｌ－アスコルビン酸ナトリウム、Ｌ－アスコルビン酸カリウム、亜硫酸ナトリウム、アミノ酸、安息香酸、安息香酸ナトリウム、ＥＤＴＡ二ナトリウム、エリソルビン酸、エリソルビン酸ナトリウム、クエン酸、クエン酸ナトリウム、クエン酸カリウム、クエン酸アンモニウム、グリセリン、グルコン酸、グルコン酸カリウム、グルコン酸ナトリウム、Ｌ－グルタミン酸、Ｌ－グルタミン酸ナトリウム、Ｌ－グルタミン酸カリウム、Ｌ－グルタミン酸アンモニウム、コハク酸、コハク酸ナトリウム、コハク酸カリウム、酢酸ナトリウム、次亜塩素酸、次亜塩素酸ナトリウム、次亜硫酸ナトリウム、酒石酸、酒石酸ナトリウム、酒石酸カリウム、硝酸カリウム、硝酸ナトリウム、水酸化ナトリウム、水酸化カリウム、ソルビン酸、ソルビン酸カリウム、重炭酸アンモニウム、重炭酸ナトリウム、炭酸ナトリウム、乳酸、乳酸ナトリウム、パテトテン酸ナトリウム、ピロ亜硫酸ナトリウム、ピロ亜硫酸カリウム、ピロリン酸カリウム、ピロリン酸ナトリウム、フマル酸、フマル酸ナトリウム、プロピオン酸、プロピレングリコール、ポリアクリル酸ナトリウム、ポリリン酸ナトリウム、ポリリン酸カリウム、メタリン酸ナトリウム、メタリン酸カリウム、硫酸アンモニウム、硫酸ナトリウム、リンゴ酸、リンゴ酸ナトリウム、リン酸、リン酸ナトリウム、リン酸水素二ナトリウム、リン酸カリウム、リン酸アンモニウム、グルコサミン、タウリン、タンニン、ヒアルロン酸、フィチン酸、フェルラ酸および没食子酸等からなる群から選択される１種または２種以上の循環系用冷却水処理剤用添加剤を例示することができる。
Of these, food additives and additives for circulating water treatment agents composed of food-derived components are particularly preferable. For example, zinc gluconate, zinc sulfate, L-ascorbic acid, sodium L-ascorbate, L- Potassium ascorbate, sodium sulfite, amino acids, benzoic acid, sodium benzoate, disodium EDTA, erythorbic acid, sodium erythorbate, citric acid, sodium citrate, potassium citrate, ammonium citrate, glycerin, gluconic acid, potassium gluconate Sodium gluconate, L-glutamic acid, sodium L-glutamate, potassium L-glutamate, ammonium L-glutamate, succinic acid, sodium succinate, potassium succinate, sodium acetate, hypochlorous acid, sodium hypochlorite, next Sodium sulfate, tartaric acid, sodium tartrate, potassium tartrate, potassium nitrate, sodium nitrate, sodium hydroxide, potassium hydroxide, sorbic acid, potassium sorbate, ammonium bicarbonate, sodium bicarbonate, sodium carbonate, lactic acid, sodium lactate, sodium patetothenate , Sodium pyrosulfite, potassium pyrosulfite, potassium pyrophosphate, sodium pyrophosphate, fumaric acid, sodium fumarate, propionic acid, propylene glycol, sodium polyacrylate, sodium polyphosphate, potassium polyphosphate, sodium metaphosphate, potassium metaphosphate , Ammonium sulfate, sodium sulfate, malic acid, sodium malate, phosphoric acid, sodium phosphate, disodium hydrogen phosphate, potassium phosphate, ammonium phosphate, Glucosamine, taurine, tannic, hyaluronic acid, phytic acid, can be exemplified one or two or more of the circulatory system for cooling water treatment agent additive selected from the group consisting of ferulic acid and gallic acid.
本発明の循環系用冷却水処理剤は、循環系用冷却水へ、（Ａ）二糖類の濃度が、０．１～１００質量ｐｐｍ、好ましくは１～５０質量ｐｐｍの範囲となるように添加することができる。（Ａ）二糖類の濃度が１００質量ｐｐｍを超えると、その添加効果が飽和してしまい、かつコストの上昇を招くために好ましくなく、また、（Ａ）二糖類の濃度が０．１質量ｐｐｍ未満では十分な防食効果を得られないために好ましくない。なお、（Ｂ）糖アルコール類の濃度もまた０．１～１００質量ｐｐｍ、好ましくは１～５０ｐｐｍの範囲内となるように添加することができる。（Ｂ）糖アルコール類の濃度が１００質量ｐｐｍを超えると、その添加効果が飽和してしまい、かつコストの上昇を招くために好ましくなく、また、（Ｂ）糖アルコール類の濃度が０．１質量ｐｐｍ未満では十分な防食効果が得られないために好ましくない。
The cooling water treatment agent for circulating system of the present invention is added to the cooling water for circulating system so that the concentration of (A) disaccharide is in the range of 0.1 to 100 ppm by mass, preferably 1 to 50 ppm by mass. can do. When the concentration of (A) disaccharide exceeds 100 mass ppm, the effect of addition is saturated and the cost increases, which is not preferable. Also, the concentration of (A) disaccharide is 0.1 mass ppm. If it is less than 1, it is not preferable because sufficient anticorrosive effect cannot be obtained. The concentration of (B) sugar alcohols can also be added so as to be in the range of 0.1 to 100 ppm by mass, preferably 1 to 50 ppm. When the concentration of (B) sugar alcohol exceeds 100 ppm by mass, the effect of addition is saturated and the cost increases, which is not preferable. Further, the concentration of (B) sugar alcohol is 0.1. Less than mass ppm is not preferable because a sufficient anticorrosive effect cannot be obtained.
以下に実施例を挙げて本発明を更に説明するが、本発明は以下の実施例になんら限定されるものではない。
実施例１および比較例１
以下の表１に記載の如く、（Ａ）二糖類を後述する循環系用冷却水処理剤基本配合（１）～（２）に、（Ａ）二糖類を配合して防食剤を含有する循環系用冷却水処理剤を調製した。 EXAMPLES The present invention will be further described below with reference to examples, but the present invention is not limited to the following examples.
Example 1 and Comparative Example 1
As shown in Table 1 below, (A) a disaccharide is added to the circulation system cooling water treatment agent basic formulation (1) to (2) described later, and (A) a disaccharide is added to the circulation containing an anticorrosive agent. A cooling water treatment agent for the system was prepared.
実施例１および比較例１
以下の表１に記載の如く、（Ａ）二糖類を後述する循環系用冷却水処理剤基本配合（１）～（２）に、（Ａ）二糖類を配合して防食剤を含有する循環系用冷却水処理剤を調製した。 EXAMPLES The present invention will be further described below with reference to examples, but the present invention is not limited to the following examples.
Example 1 and Comparative Example 1
As shown in Table 1 below, (A) a disaccharide is added to the circulation system cooling water treatment agent basic formulation (1) to (2) described later, and (A) a disaccharide is added to the circulation containing an anticorrosive agent. A cooling water treatment agent for the system was prepared.
循環系用冷却水処理剤基本配合（１）
配合量（質量％）
リン酸水素二ナトリウム ２０
ポリアクリル酸ナトリウム ２０
純水 ６０
（ポリアクリル酸ナトリウムは、質量平均分子量約２０００のものである） Basic formulation of cooling water treatment agent for circulation system (1)
Blending amount (% by mass)
Disodium hydrogen phosphate 20
Sodium polyacrylate 20
Pure water 60
(Sodium polyacrylate has a mass average molecular weight of about 2000)
配合量（質量％）
リン酸水素二ナトリウム ２０
ポリアクリル酸ナトリウム ２０
純水 ６０
（ポリアクリル酸ナトリウムは、質量平均分子量約２０００のものである） Basic formulation of cooling water treatment agent for circulation system (1)
Blending amount (% by mass)
Disodium hydrogen phosphate 20
Sodium polyacrylate 20
Pure water 60
(Sodium polyacrylate has a mass average molecular weight of about 2000)
循環系用冷却水処理剤基本配合（２）
配合量（質量％）
次亜塩素酸ナトリウム ５
４８％濃度水酸化ナトリウム １０
ポリアクリル酸ナトリウム ２０
純水 ６５
（ポリアクリル酸ナトリウムは、質量平均分子量約２０００のものである） Cooling water treatment agent basic composition for circulation system (2)
Blending amount (% by mass)
Sodium hypochlorite 5
48% sodium hydroxide 10
Sodium polyacrylate 20
Pure water 65
(Sodium polyacrylate has a mass average molecular weight of about 2000)
配合量（質量％）
次亜塩素酸ナトリウム ５
４８％濃度水酸化ナトリウム １０
ポリアクリル酸ナトリウム ２０
純水 ６５
（ポリアクリル酸ナトリウムは、質量平均分子量約２０００のものである） Cooling water treatment agent basic composition for circulation system (2)
Blending amount (% by mass)
Sodium hypochlorite 5
48% sodium hydroxide 10
Sodium polyacrylate 20
Pure water 65
(Sodium polyacrylate has a mass average molecular weight of about 2000)
上述のようにして得られた循環系用冷却水処理剤につき、防食試験を行った。防食試験は、ＪＩＳ Ｋ０１００工業用腐食性試験方法 参考 回転法に準拠して行なわれた。
腐食因子を所定量添加した試験水に、循環系用冷却水処理剤を表に記載する濃度で、また、ブランクは、循環系用冷却水処理剤基本配合（１）または（２）がそれぞれ１質量％となるように添加して試験液とした。
ここで、腐食因子およびその所定量とは、炭酸水素ナトリウム（試薬一級）３０２ｐｐｍ、塩化カルシウム・二水和物（試薬一級）１７６ｐｐｍ、硫酸マグネシウム・七水和物（試薬一級）２８６ｐｐｍ、ケイ酸ソーダ３号（試薬一級）３４４ｐｐｍ、硫酸ナトリウム（試薬一級）６．８ｐｐｍ、塩化ナトリウム（試薬一級）４０３ｐｐｍである。
防食試験に用いる試験片：銅（ＪＩＳ Ｈ３１００に規定するＣ１１００Ｐ）または黄銅（ＪＩＳ Ｈ３１００に規定するＣ２６８０）を回転軸に取り付け、試験液に浸漬し、１５０～１６０ｒｐｍの回転速度で試験片を回転させながら、５０℃で３０日間試験を実施した。試験後、試験液中に溶出される銅イオン濃度を測定した。
その結果、各試験液の銅イオン溶出量が、０．１ｐｐｍ未満：◎、０．１ｐｐｍ～１ｐｐｍ未満：○、１ｐｐｍ～２ｐｐｍ未満：△、２ｐｐｍ以上：×とする評価を行った。得られた結果を表中に併記する。 The anti-corrosion test was done about the cooling water processing agent for circulating systems obtained as mentioned above. The anticorrosion test was conducted in accordance with JIS K0100 Industrial Corrosion Test Method Reference Rotation Method.
The test water to which a predetermined amount of a corrosion factor has been added, the concentration of the cooling water treatment agent for the circulation system listed in the table, and the blank is 1 for the basic composition of the cooling water treatment agent for the circulation system (1) or (2), respectively. It added so that it might become mass%, and it was set as the test liquid.
Here, the corrosion factor and its predetermined amount are: sodium bicarbonate (reagent grade) 302 ppm, calcium chloride dihydrate (reagent grade) 176 ppm, magnesium sulfate heptahydrate (reagent grade) 286 ppm, sodium silicate No. 3 (reagent grade) 344 ppm, sodium sulfate (reagent grade) 6.8 ppm, sodium chloride (reagent grade) 403 ppm.
Test piece used for anticorrosion test: Copper (C1100P specified in JIS H3100) or brass (C2680 specified in JIS H3100) is attached to a rotating shaft, immersed in a test solution, and the test piece is rotated at a rotation speed of 150 to 160 rpm. However, the test was carried out at 50 ° C. for 30 days. After the test, the copper ion concentration eluted in the test solution was measured.
As a result, the copper ion elution amount of each test solution was evaluated to be less than 0.1 ppm: 、, 0.1 ppm to less than 1 ppm: ◯, 1 ppm to less than 2 ppm: Δ, 2 ppm or more: x. The obtained results are also shown in the table.
腐食因子を所定量添加した試験水に、循環系用冷却水処理剤を表に記載する濃度で、また、ブランクは、循環系用冷却水処理剤基本配合（１）または（２）がそれぞれ１質量％となるように添加して試験液とした。
ここで、腐食因子およびその所定量とは、炭酸水素ナトリウム（試薬一級）３０２ｐｐｍ、塩化カルシウム・二水和物（試薬一級）１７６ｐｐｍ、硫酸マグネシウム・七水和物（試薬一級）２８６ｐｐｍ、ケイ酸ソーダ３号（試薬一級）３４４ｐｐｍ、硫酸ナトリウム（試薬一級）６．８ｐｐｍ、塩化ナトリウム（試薬一級）４０３ｐｐｍである。
防食試験に用いる試験片：銅（ＪＩＳ Ｈ３１００に規定するＣ１１００Ｐ）または黄銅（ＪＩＳ Ｈ３１００に規定するＣ２６８０）を回転軸に取り付け、試験液に浸漬し、１５０～１６０ｒｐｍの回転速度で試験片を回転させながら、５０℃で３０日間試験を実施した。試験後、試験液中に溶出される銅イオン濃度を測定した。
その結果、各試験液の銅イオン溶出量が、０．１ｐｐｍ未満：◎、０．１ｐｐｍ～１ｐｐｍ未満：○、１ｐｐｍ～２ｐｐｍ未満：△、２ｐｐｍ以上：×とする評価を行った。得られた結果を表中に併記する。 The anti-corrosion test was done about the cooling water processing agent for circulating systems obtained as mentioned above. The anticorrosion test was conducted in accordance with JIS K0100 Industrial Corrosion Test Method Reference Rotation Method.
The test water to which a predetermined amount of a corrosion factor has been added, the concentration of the cooling water treatment agent for the circulation system listed in the table, and the blank is 1 for the basic composition of the cooling water treatment agent for the circulation system (1) or (2), respectively. It added so that it might become mass%, and it was set as the test liquid.
Here, the corrosion factor and its predetermined amount are: sodium bicarbonate (reagent grade) 302 ppm, calcium chloride dihydrate (reagent grade) 176 ppm, magnesium sulfate heptahydrate (reagent grade) 286 ppm, sodium silicate No. 3 (reagent grade) 344 ppm, sodium sulfate (reagent grade) 6.8 ppm, sodium chloride (reagent grade) 403 ppm.
Test piece used for anticorrosion test: Copper (C1100P specified in JIS H3100) or brass (C2680 specified in JIS H3100) is attached to a rotating shaft, immersed in a test solution, and the test piece is rotated at a rotation speed of 150 to 160 rpm. However, the test was carried out at 50 ° C. for 30 days. After the test, the copper ion concentration eluted in the test solution was measured.
As a result, the copper ion elution amount of each test solution was evaluated to be less than 0.1 ppm: 、, 0.1 ppm to less than 1 ppm: ◯, 1 ppm to less than 2 ppm: Δ, 2 ppm or more: x. The obtained results are also shown in the table.
実施例２および比較例２
以下の表３に記載の如く、（Ａ）二糖類を後述する循環系用冷却水処理剤基本配合（１）～（２）に（Ａ）二糖類と、（Ｂ）糖アルコール類とを配合し、得られた混合物を前記循環系用冷却水処理剤基本配合（１）～（２）に配合して循環系用冷却水処理剤を調製した。得られた循環系用冷却水処理剤につき、上記実施例１および比較例１と同様の方法にて防食試験を行った。得られた結果を表中に併記する。 Example 2 and Comparative Example 2
As shown in Table 3 below, (A) a disaccharide is mixed with a cooling water treatment agent basic composition (1) to (2) described later, and (A) a disaccharide and (B) a sugar alcohol are blended. Then, the resulting mixture was blended with the basic coolant (1) to (2) for circulation system cooling water to prepare a circulation system cooling water treatment agent. About the obtained cooling water processing agent for circulating systems, the anticorrosion test was done by the method similar to the said Example 1 and the comparative example 1. FIG. The obtained results are also shown in the table.
以下の表３に記載の如く、（Ａ）二糖類を後述する循環系用冷却水処理剤基本配合（１）～（２）に（Ａ）二糖類と、（Ｂ）糖アルコール類とを配合し、得られた混合物を前記循環系用冷却水処理剤基本配合（１）～（２）に配合して循環系用冷却水処理剤を調製した。得られた循環系用冷却水処理剤につき、上記実施例１および比較例１と同様の方法にて防食試験を行った。得られた結果を表中に併記する。 Example 2 and Comparative Example 2
As shown in Table 3 below, (A) a disaccharide is mixed with a cooling water treatment agent basic composition (1) to (2) described later, and (A) a disaccharide and (B) a sugar alcohol are blended. Then, the resulting mixture was blended with the basic coolant (1) to (2) for circulation system cooling water to prepare a circulation system cooling water treatment agent. About the obtained cooling water processing agent for circulating systems, the anticorrosion test was done by the method similar to the said Example 1 and the comparative example 1. FIG. The obtained results are also shown in the table.
Claims (9)
- （Ａ）１種または２種以上の二糖類；および（Ｃ）循環系用冷却水処理剤用添加剤を含有してなることを特徴とする循環系用冷却水処理剤。 (A) One or two or more disaccharides; and (C) a cooling water treatment agent for circulation system, comprising an additive for cooling water treatment agent for circulation system.
- （Ａ）二糖類は、スクロース、ラクツロース、ラクトース、マルトース、トレハロース、セルビオース、コージビオース、ニゲロース、イソマルトース、イソトレハロース、ネオトレハロース、ソホロース、ラミナリビオース、ゲンチビオース、ツラノース、マルツロース、パラチノース、ゲンチオビウロース、マンノビオース、メリビオース、メリビウロース、ネオラクトース、ガラクトスクロース、シラビオース、ルチノース、ルチヌロース、ビシアノース、キシロビオース、プリメベロース、トレハロサミン、マルチトール、ラクトサミン、ラクチトールおよびスクラロースからなる群から選択される、請求項１記載の循環系用冷却水処理剤。 (A) Disaccharides are sucrose, lactulose, lactose, maltose, trehalose, cellobiose, cordobiose, nigerose, isomaltose, isotrehalose, neotrehalose, sophorose, laminaribiose, gentibiose, turanose, maltulose, palatinose, gentiobiulose 2. The circulatory system according to claim 1, selected from the group consisting of mannobiose, melibiose, melibiose, melibiose, neolactose, galactosucrose, silabiose, rutinose, rutinulose, vicyanose, xylobiose, primebellose, trehalosamine, maltitol, lactosamine, lactitol and sucralose. Cooling water treatment agent.
- さらに、（Ｂ）１種または２種以上の糖アルコール類を含有してなる、請求項１または２記載の循環系用冷却水処理剤。 Furthermore, (B) the cooling water treatment agent for circulating systems according to claim 1 or 2, comprising one or more sugar alcohols.
- （Ｂ）糖アルコール類は、エリトリトール、トレイトール、アラビニトール、キシリトール、リビトール、イジトール、ガラクチトール、ソルビトール、マンニトール、ボレミトールおよびペルセイトールからなる群から選択される、請求項３記載の循環系用冷却水処理剤。 The circulating alcohol cooling water treatment according to claim 3, wherein (B) the sugar alcohol is selected from the group consisting of erythritol, threitol, arabinitol, xylitol, ribitol, iditol, galactitol, sorbitol, mannitol, boremitol and perseitol. Agent.
- （Ａ）二糖類と、（Ｂ）糖アルコール類を併用する場合、その配合割合は、（Ａ）二糖類の１質量部に対して（Ｂ）糖アルコール類０．０１～１００質量部の範囲内である、請求項３または４記載の循環系用冷却水処理剤。 When (A) disaccharide and (B) sugar alcohol are used in combination, the blending ratio is in the range of 0.01 to 100 parts by mass of (B) sugar alcohol with respect to 1 part by mass of (A) disaccharide. The cooling water treatment agent for circulating systems according to claim 3 or 4, wherein
- 循環系用冷却水処理剤への（Ａ）二糖類の配合量は、０．０００１～２０質量％の範囲内であり、（Ｂ）糖アルコール類を併用する場合には、（Ｂ）糖アルコール類の配合量は、０．０００１～２０質量％の範囲内である、請求項１ないし５のいずれか１項記載の循環系用冷却水処理剤。 The blending amount of (A) disaccharide in the cooling water treatment agent for circulating system is in the range of 0.0001 to 20% by mass. When (B) sugar alcohols are used in combination, (B) sugar alcohol The cooling water treatment agent for a circulating system according to any one of claims 1 to 5, wherein the blending amount of said class is in the range of 0.0001 to 20 mass%.
- 循環系用冷却水処理剤用添加剤が、食品添加物および食品由来成分からなる群から選択される１種または２種以上よりなる、請求項１ないし６のいずれか１項記載の循環系用冷却水処理剤。 The circulatory system additive according to any one of claims 1 to 6, wherein the circulatory coolant additive is composed of one or more selected from the group consisting of food additives and food-derived ingredients. Cooling water treatment agent.
- 食品添加物および食品由来成分が、グルコン酸亜鉛、硫酸亜鉛、Ｌ－アスコルビン酸、Ｌ－アスコルビン酸ナトリウム、Ｌ－アスコルビン酸カリウム、亜硫酸ナトリウム、アミノ酸、安息香酸、安息香酸ナトリウム、ＥＤＴＡ二ナトリウム、エリソルビン酸、エリソルビン酸ナトリウム、クエン酸、クエン酸ナトリウム、クエン酸カリウム、クエン酸アンモニウム、グリセリン、グルコン酸、グルコン酸カリウム、グルコン酸ナトリウム、Ｌ－グルタミン酸、Ｌ－グルタミン酸ナトリウム、Ｌ－グルタミン酸カリウム、Ｌ－グルタミン酸アンモニウム、コハク酸、コハク酸ナトリウム、コハク酸カリウム、酢酸ナトリウム、次亜塩素酸、次亜塩素酸ナトリウム、次亜硫酸ナトリウム、酒石酸、酒石酸ナトリウム、酒石酸カリウム、硝酸カリウム、硝酸ナトリウム、水酸化ナトリウム、水酸化カリウム、ソルビン酸、ソルビン酸カリウム、重炭酸アンモニウム、重炭酸ナトリウム、炭酸ナトリウム、乳酸、乳酸ナトリウム、パテトテン酸ナトリウム、ピロ亜硫酸ナトリウム、ピロ亜硫酸カリウム、ピロリン酸カリウム、ピロリン酸ナトリウム、フマル酸、フマル酸ナトリウム、プロピオン酸、プロピレングリコール、ポリアクリル酸ナトリウム、ポリリン酸ナトリウム、ポリリン酸カリウム、メタリン酸ナトリウム、メタリン酸カリウム、硫酸アンモニウム、硫酸ナトリウム、リンゴ酸、リンゴ酸ナトリウム、リン酸、リン酸ナトリウム、リン酸カリウム、リン酸アンモニウム、グルコサミン、タウリン、タンニン、ヒアルロン酸、フィチン酸、フェルラ酸および没食子酸からなる群から選択される１種または２種以上である、請求項７記載の循環系用冷却水処理剤。 Food additives and food-derived ingredients are zinc gluconate, zinc sulfate, L-ascorbic acid, sodium L-ascorbate, potassium L-ascorbate, sodium sulfite, amino acids, benzoic acid, sodium benzoate, disodium EDTA, erythorbine Acid, sodium erythorbate, citric acid, sodium citrate, potassium citrate, ammonium citrate, glycerin, gluconic acid, potassium gluconate, sodium gluconate, L-glutamic acid, sodium L-glutamate, potassium L-glutamate, L- Ammonium glutamate, succinic acid, sodium succinate, potassium succinate, sodium acetate, hypochlorous acid, sodium hypochlorite, sodium hyposulfite, tartaric acid, sodium tartrate, potassium tartrate, potassium nitrate Sodium nitrate, sodium hydroxide, potassium hydroxide, sorbic acid, potassium sorbate, ammonium bicarbonate, sodium bicarbonate, sodium carbonate, lactic acid, sodium lactate, sodium patothenate, sodium pyrosulfite, potassium pyrosulfite, pyrophosphate Potassium, sodium pyrophosphate, fumaric acid, sodium fumarate, propionic acid, propylene glycol, sodium polyacrylate, sodium polyphosphate, potassium polyphosphate, sodium metaphosphate, potassium metaphosphate, ammonium sulfate, sodium sulfate, malic acid, malic acid Consists of sodium, phosphoric acid, sodium phosphate, potassium phosphate, ammonium phosphate, glucosamine, taurine, tannin, hyaluronic acid, phytic acid, ferulic acid and gallic acid It is one or more selected from the circulatory system for cooling water treatment agent according to claim 7.
- 請求項１ないし８のいずれか１項記載の循環系用冷却水処理剤を、（Ａ）二糖類の濃度として０．１～１００質量ｐｐｍ、（Ｂ）糖アルコール類を含む場合には、（Ｂ）糖アルコール類の濃度として０．１～１００質量ｐｐｍとなるように循環系用冷却水に添加することを特徴とする循環系用冷却水処理剤の使用方法。 When the cooling water treatment agent for a circulation system according to any one of claims 1 to 8 contains (A) a disaccharide concentration of 0.1 to 100 mass ppm and (B) a sugar alcohol, B) A method for using a cooling water treatment agent for circulation system, which is added to the cooling water for circulation system so that the concentration of sugar alcohols is 0.1 to 100 ppm by mass.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016089210A (en) * | 2014-10-31 | 2016-05-23 | アクアス株式会社 | Composition for copper corrosion protection, and copper corrosion protection method |
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| JPH07188953A (en) * | 1993-12-27 | 1995-07-25 | Asahi Breweries Ltd | Method for treating and controlling boiler water and boiler water treating agent |
| JP2001164244A (en) * | 1999-09-28 | 2001-06-19 | Toyota Motor Corp | Cooling liquid, filling method thereof and cooling system |
| JP2012224930A (en) * | 2011-04-22 | 2012-11-15 | Japan Organo Co Ltd | Metal corrosion inhibitor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07188953A (en) * | 1993-12-27 | 1995-07-25 | Asahi Breweries Ltd | Method for treating and controlling boiler water and boiler water treating agent |
| JP2001164244A (en) * | 1999-09-28 | 2001-06-19 | Toyota Motor Corp | Cooling liquid, filling method thereof and cooling system |
| JP2012224930A (en) * | 2011-04-22 | 2012-11-15 | Japan Organo Co Ltd | Metal corrosion inhibitor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2016089210A (en) * | 2014-10-31 | 2016-05-23 | アクアス株式会社 | Composition for copper corrosion protection, and copper corrosion protection method |
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