JP2001279235A - Antifreeze/coolant composition - Google Patents
Antifreeze/coolant compositionInfo
- Publication number
- JP2001279235A JP2001279235A JP2000090838A JP2000090838A JP2001279235A JP 2001279235 A JP2001279235 A JP 2001279235A JP 2000090838 A JP2000090838 A JP 2000090838A JP 2000090838 A JP2000090838 A JP 2000090838A JP 2001279235 A JP2001279235 A JP 2001279235A
- Authority
- JP
- Japan
- Prior art keywords
- acid
- antifreeze
- aluminum
- coolant
- acids
- 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.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
- C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
- C23F11/10—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
-
- 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
- C09K5/20—Antifreeze additives therefor, e.g. for radiator liquids
-
- 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)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、エンジン等の内燃
機関の冷却系統に使用されているアルミニウムまたはア
ルミニウム合金の腐食防止機能に優れると共に、アルミ
ニウムまたはアルミニウム合金が不凍液／冷却液中にお
いて黒く変色するのを確実に防止することができる不凍
液／冷却液組成物に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is excellent in the function of preventing corrosion of aluminum or aluminum alloy used in a cooling system of an internal combustion engine such as an engine, and the aluminum or aluminum alloy turns black in antifreeze / coolant. The present invention relates to an antifreeze / cooling liquid composition that can reliably prevent the occurrence of frost.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】エンジ
ン等の内燃機関の冷却系統には、アルミニウム、アルミ
ニウム合金、鋳鉄、鋼、黄銅、はんだ、銅などの金属が
使用されている。これらの金属は、水あるいは空気との
接触により腐食を生じる。これら冷却系統における金属
の腐食を防止するため、リン酸塩、アミン塩、亜硝酸
塩、あるいはケイ酸塩といった腐食防止剤を含む不凍液
組成物や冷却液組成物が提案されている。2. Description of the Related Art Metals such as aluminum, aluminum alloys, cast iron, steel, brass, solder, and copper are used in cooling systems of internal combustion engines such as engines. These metals corrode on contact with water or air. In order to prevent metal corrosion in these cooling systems, antifreeze compositions and coolant compositions containing corrosion inhibitors such as phosphates, amine salts, nitrites or silicates have been proposed.
【０００３】ところが、これらの腐食防止剤にあって
は、以下の如き欠点を有していた。すなわちリン酸塩
は、これが河川等に流入すると、富栄養化を引き起こ
し、水中のＢＯＤ、ＣＯＤが上昇して藻類が繁殖し、こ
の結果、赤潮やスライムが発生するという問題があっ
た。However, these corrosion inhibitors have the following disadvantages. That is, when phosphates flow into rivers and the like, they cause eutrophication, BOD and COD in water rise, and algae proliferate. As a result, there is a problem that red tide and slime are generated.
【０００４】またリン酸塩は、冷却液中に含まれる硬水
成分と反応して沈殿を生じ、これにより冷却液の腐食防
止機能が低下し、さらには沈殿物が堆積して冷却系統の
循環路が閉塞してしまうという事態を引き起こしてい
た。[0004] Further, phosphate reacts with hard water components contained in the cooling liquid to form a precipitate, thereby deteriorating the function of the cooling liquid to prevent corrosion. Caused a blockage.
【０００５】アミン塩は、亜硝酸塩と反応して発ガン性
物質であるニトロソアミンを生成し易いという欠点があ
る。またケイ酸塩は、不凍液／冷却液中での安定性に劣
り、熱やｐＨが変化した場合や他の塩類が共存する場合
には、容易にゲル化してしまい、腐食防止機能が低下す
るという不具合があった。Amine salts have the disadvantage that they readily react with nitrite to form nitrosamine, a carcinogenic substance. In addition, silicates are inferior in stability in antifreeze / cooling liquid, and easily gel when heat or pH changes or when other salts coexist, and the corrosion prevention function is reduced. There was a defect.
【０００６】そこで、上記不具合を有するリン酸塩、ア
ミン塩、亜硝酸塩、あるいはケイ酸塩に代わる腐食防止
剤として炭化水素カルボン酸などのカルボン酸類を含ま
せた不凍液組成物や冷却液組成物が提案されていた。Accordingly, antifreeze compositions and coolant compositions containing a carboxylic acid such as a hydrocarbon carboxylic acid as a corrosion inhibitor instead of a phosphate, an amine salt, a nitrite or a silicate having the above-mentioned problems have been proposed. Had been proposed.
【０００７】ところが、これらの不凍液／冷却液組成物
にあっては、リン酸塩、アミン塩、亜硝酸塩、あるいは
ケイ酸塩に代わる腐食防止剤として含ませたカルボン酸
類が不凍液／冷却液中においてアルミニウムまたはアル
ミニウム合金表面を黒変させていた。However, in these antifreeze / coolant compositions, carboxylic acids contained as a corrosion inhibitor instead of phosphate, amine salt, nitrite, or silicate are contained in the antifreeze / coolant solution. The aluminum or aluminum alloy surface was blackened.
【０００８】ユーザー間では、アルミニウムやアルミニ
ウム合金に黒変が生じたとき、それらの金属の腐食も進
行している、あるいはまもなく腐食が始まると信じられ
ている。It is believed among users that when blackening of aluminum or aluminum alloys occurs, the corrosion of those metals is in progress or will soon begin.
【０００９】ところが実際には、アルミニウムまたはア
ルミニウム合金表面の黒変は、カルボン酸類が不凍液／
冷却液中において、アルミニウムやアルミニウム合金表
面に黒色を呈する酸化アルミの不動態皮膜を形成するこ
とにより生じ、この黒色を呈する酸化アルミの不動態皮
膜は、アルミニウムやアルミニウム合金の表面を覆って
これを保護し、腐食の進行を妨げる働きがあり、むしろ
好ましいものであった。 しかしながらユーザー間にお
いては、黒変と腐食との間には密接な関係があるとの考
えが根強く、しかも見栄えも悪いことなどの点から、ア
ルミニウムやアルミニウム合金に黒変が生じにくい不凍
液／冷却液組成物が「良」とされていた。In practice, however, the blackening of the aluminum or aluminum alloy surface is caused by the fact that the carboxylic acids contain antifreeze /
This is caused by the formation of a black aluminum oxide passivation film on the surface of aluminum or aluminum alloy in the coolant, and this black aluminum oxide passivation film covers the aluminum or aluminum alloy surface and It worked to protect and hinder the progress of corrosion and was rather favorable. However, among users, there is a strong belief that there is a close relationship between blackening and corrosion, and the appearance of the antifreeze / coolant is not prone to blackening on aluminum and aluminum alloys. The composition was rated "good".
【００１０】本発明者は、このような事情から、アルミ
ニウムまたはアルミニウム合金の黒変防止について鋭意
研究を重ねた結果、以下のａ）成分及びｂ）成分がアル
ミニウムまたはアルミニウム合金の黒変防止にきわめて
有効であることを見い出し、この知見に基づいて本発明
を完成させたのである。The present inventor has conducted intensive studies on the prevention of blackening of aluminum or aluminum alloys from the above circumstances. As a result, the following components a) and b) are extremely effective in preventing blackening of aluminum or aluminum alloys. They found that they were effective, and completed the present invention based on this finding.
【００１１】本発明は、冷却系統に使用されているアル
ミニウムまたはアルミニウム合金の腐食防止機能に優れ
ると共に、アルミニウムまたはアルミニウム合金が不凍
液／冷却液中において黒く変色するのを確実に防止する
ことができる不凍液／冷却液組成物を提供するものであ
る。The present invention provides an antifreeze which is excellent in the function of preventing corrosion of aluminum or aluminum alloy used in a cooling system and which can surely prevent aluminum or aluminum alloy from discoloring black in antifreeze / coolant. / Coolant composition.
【００１２】[0012]
【課題を解決するための手段】本発明の不凍液／冷却液
組成物は、水またはグリコール類を主成分としている。
グリコール類としては、エチレングリコール、プロピレ
ングリコール、１，３ブチレングリコール、ヘキシレン
グリコール、ジエチレングリコール、グリセリン等が挙
げられるが、その中でも特にエチレングリコール、或い
はプロピレングリコールが望ましい。SUMMARY OF THE INVENTION The antifreeze / coolant composition of the present invention is based on water or glycols.
Examples of the glycols include ethylene glycol, propylene glycol, 1,3-butylene glycol, hexylene glycol, diethylene glycol, and glycerin. Of these, ethylene glycol and propylene glycol are particularly desirable.
【００１３】この不凍液／冷却液組成物は、以下のａ）
成分及びｂ）成分を含有することを特徴としている。
ａ）成分は、マレイン酸やフマル酸など、またはそれら
のアルカリ金属塩やアンモニウム塩などのモノエチレン
ジカルボン酸類の重合体、メタクリル酸など、またはそ
れらのアルカリ金属塩やアンモニウム塩などのモノエチ
レンモノカルボン酸類の重合体、あるいは前記モノエチ
レンジカルボン酸類とモノエチレンモノカルボン酸類と
からなる共重合体の中から選ばれる少なくとも１種から
なる。The antifreeze / coolant composition comprises the following a)
It is characterized by containing the component and the component b).
The component a) is a polymer of monoethylene dicarboxylic acids such as maleic acid or fumaric acid, or an alkali metal salt or ammonium salt thereof, methacrylic acid, or a monoethylene monocarboxylic acid such as an alkali metal salt or ammonium salt thereof. It is composed of at least one selected from polymers of acids or copolymers of the above-mentioned monoethylenedicarboxylic acids and monoethylenemonocarboxylic acids.
【００１４】具体的にはポリマレイン酸、ポリアクリル
酸、マレイン酸／アクリル酸共重合体などを挙げること
ができる。特にはポリマレイン酸またはそのアルカリ金
属塩やアンモニウム塩は、黒変防止効果に優れている点
で好ましい。Specific examples thereof include polymaleic acid, polyacrylic acid, maleic acid / acrylic acid copolymer and the like. In particular, polymaleic acid or an alkali metal salt or ammonium salt thereof is preferable because of its excellent blackening preventing effect.
【００１５】これら重合体または共重合体の分子量は、
好ましくは１００〜２０００である。分子量が１００を
下回る場合、十分な腐食防止機能及び黒変防止機能が得
られなくなり、分子量が２０００を上回る場合には、該
組成物中に溶解し難くなる。また前記共重合体は、ラン
ダム重合やブロック重合といった重合形態となってい
る。The molecular weight of these polymers or copolymers is
Preferably it is 100-2000. When the molecular weight is less than 100, a sufficient corrosion preventing function and blackening preventing function cannot be obtained, and when the molecular weight is more than 2,000, it becomes difficult to dissolve in the composition. The copolymer is in a polymerization form such as random polymerization or block polymerization.
【００１６】ａ）成分の含有量としては、０．００１〜
１重量％の範囲が好ましい。ａ）成分の含有量が０．０
０１重量％を下回る場合、十分な腐食防止機能及び黒変
防止機能が得られなくなり、含有量が１重量％を上回る
場合には、１重量％を上回って含有した分だけの効果が
期待できず、不経済となる。The content of the component (a) is from 0.001 to
A range of 1% by weight is preferred. a) The content of the component is 0.0
When the content is less than 01% by weight, a sufficient corrosion preventing function and blackening preventing function cannot be obtained. When the content is more than 1% by weight, the effect of the content exceeding 1% by weight cannot be expected. Uneconomical.
【００１７】ｂ）成分は、カルボン酸類またはその塩の
中から選ばれる少なくとも１種からなり、具体的には酪
酸、１−ナフタレン酢酸、２−エチル酪酸、シクロヘキ
シルカルボキシル酸、カプロン酸、２−エチルヘキサン
酸、カプリル酸、オレイン酸、カプリン酸、ラウリン酸
などの「脂肪族カルボン酸」、安息香酸、２−メルカプ
ト安息香酸、ｐ−ｔｅｒｔ−ブチル安息香酸、イソプロ
ピル安息香酸、２−クロロ安息香酸、３−クロロ安息香
酸、４−クロロ安息香酸、２−アミノ安息香酸、３−ア
ミノ安息香酸、４−アミノ安息香酸、２−メトキシ安息
香酸、４−メトキシ安息香酸、２，６−ジメトキシ安息
香酸、３−ヒドロキシ安息香酸、４−ヒドロキシ安息香
酸、２，６−ヒドロキシ安息香酸、３，４，５−トリヒ
ドロキシ安息香酸、２−ニトロ安息香酸、３−ニトロ安
息香酸、４−ニトロ安息香酸、３，５−ジニトロ安息香
酸、３−メトキシ−２−ニトロ安息香酸、トルイル酸、
サリチル酸、桂皮酸などの「芳香族カルボン酸」、セバ
シン酸、ソルビン酸、グルタル酸、アジピン酸、アゼラ
イン酸、マロン酸、コハク酸、マレイン酸、フマル酸、
リンゴ酸などの「脂肪族ジカルボン酸」、フタル酸など
の「芳香族ジカルボン酸」、またはそれらのアルカリ金
属塩やアンモニウム塩といった塩を挙げることができ
る。The component (b) is composed of at least one selected from carboxylic acids and salts thereof. Specifically, butyric acid, 1-naphthaleneacetic acid, 2-ethylbutyric acid, cyclohexylcarboxylic acid, caproic acid, 2-ethyl "Aliphatic carboxylic acids" such as hexanoic acid, caprylic acid, oleic acid, capric acid, lauric acid, benzoic acid, 2-mercaptobenzoic acid, p-tert-butylbenzoic acid, isopropylbenzoic acid, 2-chlorobenzoic acid, 3-chlorobenzoic acid, 4-chlorobenzoic acid, 2-aminobenzoic acid, 3-aminobenzoic acid, 4-aminobenzoic acid, 2-methoxybenzoic acid, 4-methoxybenzoic acid, 2,6-dimethoxybenzoic acid, 3-hydroxybenzoic acid, 4-hydroxybenzoic acid, 2,6-hydroxybenzoic acid, 3,4,5-trihydroxybenzoic acid 2-nitrobenzoic acid, 3-nitrobenzoic acid, 4-nitrobenzoic acid, 3,5-dinitro-benzoic acid, 3-methoxy-2-nitrobenzoic acid, toluic acid,
"Aromatic carboxylic acids" such as salicylic acid and cinnamic acid, sebacic acid, sorbic acid, glutaric acid, adipic acid, azelaic acid, malonic acid, succinic acid, maleic acid, fumaric acid,
Examples thereof include "aliphatic dicarboxylic acids" such as malic acid, "aromatic dicarboxylic acids" such as phthalic acid, and salts thereof such as alkali metal salts and ammonium salts.
【００１８】ｂ）成分の含有量としては、０．１〜１０
重量％の範囲が好ましい。ｂ）成分の含有量が前記範囲
よりも少ないとき、十分な腐食防止機能及び及び黒変防
止機能が得られなくなる。上記範囲よりもｂ）成分の含
有量を多くしたときには、範囲を超えた分だけの効果が
得られず、不経済となるので好ましくない。The content of the component (b) is 0.1 to 10
A range of weight% is preferred. When the content of the component (b) is less than the above range, a sufficient corrosion preventing function and a blackening preventing function cannot be obtained. When the content of the component b) is larger than the above range, the effect beyond the range cannot be obtained, and it is not preferable because it is uneconomical.
【００１９】またこの不凍液／冷却液組成物中には、上
記成分の他に、トリアゾール類やマグネシウム化合物を
含ませることができる。トリアゾール類は、トリルトリ
アゾールやベンゾトリアゾールなどであるが、これらは
金属、特に銅に対して優れた腐食防止機能を有してい
る。このトリアゾール類は、優れた腐食防止機能を維持
するため、０．０５〜１．０重量％の範囲で含まれるの
が望ましい。The antifreeze / coolant composition may contain a triazole or a magnesium compound in addition to the above components. Triazoles include tolyltriazole and benzotriazole, which have an excellent corrosion prevention function against metals, particularly copper. These triazoles are desirably contained in the range of 0.05 to 1.0% by weight in order to maintain an excellent corrosion prevention function.
【００２０】マグネシウム化合物としては、例えば水酸
化マグネシウム、酸化マグネシウム、炭酸マグネシウ
ム、硫酸マグネシウム、硝酸マグネシウム、安息香酸マ
グネシウム、グルタミン酸マグネシウム、琥珀酸マグネ
シウム、フタル酸マグネシウム、サリチル酸マグネシウ
ム、マレイン酸マグネシウム、塩化マグネシウム等を挙
げることができる。このマグネシウム化合物は優れた腐
食防止機能を有しており、しかもケイ酸塩やリン酸塩を
成分とする他の不凍液／冷却液組成物と不凍液／冷却液
中にて混合されても、冷却系統のアルミニウムまたはそ
の合金の腐食を防止する機能を有している。このマグネ
シウム化合物の含有量としては、０．００１〜０．５重
量％の範囲が好ましく、その含有量が０．００１重量％
よりも少ない場合、十分な腐食防止機能が得られず、ま
た０．５重量％を越える場合には、含有量が増した分だ
けの腐食防止機能が得られず不経済となる。Examples of the magnesium compound include magnesium hydroxide, magnesium oxide, magnesium carbonate, magnesium sulfate, magnesium nitrate, magnesium benzoate, magnesium glutamate, magnesium succinate, magnesium phthalate, magnesium salicylate, magnesium maleate, magnesium chloride and the like. Can be mentioned. This magnesium compound has an excellent corrosion protection function, and even when mixed with other antifreeze / coolant compositions containing silicate or phosphate in the antifreeze / coolant, the cooling system Has a function of preventing corrosion of aluminum or its alloy. The content of the magnesium compound is preferably in the range of 0.001 to 0.5% by weight, and the content is 0.001% by weight.
When the amount is less than the above range, a sufficient corrosion preventing function cannot be obtained, and when it exceeds 0.5% by weight, the corrosion preventing function cannot be obtained only by the increased content, which is uneconomical.
【００２１】なお、この不凍液／冷却液組成物には、前
記の成分以外にさらに消泡剤、着色剤等を含有させても
良いし、他の従来公知の腐食防止剤であるモリブデン酸
塩、タングステン酸塩、硫酸塩、硝酸塩、メルカプトベ
ンゾチアゾール及びアルカリ金属塩等を使用しても良
い。The antifreeze / coolant composition may further contain an antifoaming agent, a coloring agent and the like in addition to the above-mentioned components. Tungstates, sulfates, nitrates, mercaptobenzothiazole, alkali metal salts and the like may be used.
【００２２】[0022]
【実施例】下記表１に示す、本発明の不凍液／冷却液組
成物の好ましい実施例１、並びに本発明の不凍液／冷却
液組成物における必須成分であるａ）成分を含まない比
較例１〜２について、金属腐食試験を行った。EXAMPLES Preferred examples 1 of the antifreeze / coolant composition of the present invention shown in Table 1 below, and Comparative Examples 1 to 3 which do not contain the essential component a) in the antifreeze / coolant composition of the present invention. 2 was subjected to a metal corrosion test.
【００２３】 上記実施例１、並びに比較例１及び２についての金属腐
食試験は、ＪＩＳ Ｋ２２３４−１９９４ ２種の規定
に基づいて行った。試験に供する不凍液／冷却液組成物
は、調合水にて３０ｖｏｌ％に希釈したものを使用し、
試験に供する金属には、アルミニウム鋳物、鋳鉄、鋼、
黄銅、はんだ、銅の試験片をそれぞれ使用した。この結
果を表２に示した。[0023] The metal corrosion tests for Example 1 and Comparative Examples 1 and 2 were performed in accordance with JIS K2234-1994. The antifreeze / coolant composition to be used for the test was prepared by diluting it to 30 vol% with the prepared water.
The metals to be tested include aluminum casting, cast iron, steel,
Test pieces of brass, solder, and copper were used. The results are shown in Table 2.
【００２４】 表２から、実施例１の組成物は、比較例１及び２の各組
成物に比べて、鉄、アルミ系金属の腐食防止性に優れる
ことが確認された。またアルミ鋳物以外の外観について
は、いずれの組成物についても異常はなかった。しかし
ながら、アルミ鋳物の外観については、実施例１の組成
物については異常がなかったものの、ａ）成分を含まな
い比較例１の組成物はやや変色し、同じくａ）成分を含
まず、カルボン酸類の種類が異なる比較例２の組成物に
あっては重度黒変があり、実施例１の組成物が黒変防止
機能に優れることが確認された。[0024] From Table 2, it was confirmed that the composition of Example 1 was superior to the compositions of Comparative Examples 1 and 2 in preventing corrosion of iron and aluminum-based metals. In addition, there was no abnormality in the appearance of any of the compositions other than the aluminum casting. However, with respect to the appearance of the aluminum casting, although there was no abnormality in the composition of Example 1, the composition of Comparative Example 1 containing no component a) slightly discolored, and also did not contain component a) and contained carboxylic acids. In the composition of Comparative Example 2 having a different type of, there was severe blackening, and it was confirmed that the composition of Example 1 was excellent in blackening preventing function.
【００２５】[0025]
【発明の効果】本発明の不凍液／冷却液組成物にあって
は、ａ）成分、すなわち、モノエチレンジカルボン酸
類、あるいはモノエチレンモノカルボン酸類からなる重
合体、あるいは前記モノエチレンジカルボン酸類とモノ
エチレンモノカルボン酸類とからなる共重合体の中から
選ばれる少なくとも１種と、ｂ）成分、すなわち、カル
ボン酸類またはその塩の中から選ばれる少なくとも１種
とを含有することから、冷却系統に使用されているアル
ミニウムまたはアルミニウム合金の腐食防止機能に優れ
ると共に、アルミニウムまたはアルミニウム合金が不凍
液／冷却液中において黒く変色するのを確実に防止する
ことができる。According to the antifreeze / cooling liquid composition of the present invention, component a), that is, a monoethylene dicarboxylic acid or a polymer comprising monoethylene monocarboxylic acids, or a mixture of the above monoethylene dicarboxylic acids and monoethylene Since it contains at least one member selected from copolymers composed of monocarboxylic acids and b) component, that is, at least one member selected from carboxylic acids or salts thereof, it is used in a cooling system. It is excellent in the function of preventing corrosion of aluminum or aluminum alloy, and can reliably prevent aluminum or aluminum alloy from discoloring black in antifreeze / coolant.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｃ２３Ｆ 11/12 １０１ Ｃ０９Ｋ 5/00 Ｚ Ｆターム(参考） 4J002 BG011 BH021 EF006 EG006 GT00 4K062 AA03 BB06 CA05 DA05 FA05 GA10 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification code FI Theme coat ゛ (Reference) C23F 11/12 101 C09K 5/00 Z F-term (Reference) 4J002 BG011 BH021 EF006 EG006 GT00 4K062 AA03 BB06 CA05 DA05 FA05 GA10
Claims (4)
リコール類を主成分とする不凍液／冷却液組成物におい
て、 ａ） 炭素数４〜６の不飽和モノエチレンジカルボン酸
またはその塩（以下モノエチレンジカルボン酸類とい
う）、あるいは炭素数４〜６の不飽和モノエチレンモノ
カルボン酸またはその塩（以下モノエチレンモノカルボ
ン酸類という）からなる重合体、あるいは前記モノエチ
レンジカルボン酸類とモノエチレンモノカルボン酸類と
からなる共重合体の中から選ばれる少なくとも１種と、 ｂ） カルボン酸類またはその塩の中から選ばれる少な
くとも１種と、を含有することを特徴とする不凍液／冷
却液組成物。1. An antifreeze / coolant composition mainly composed of water or glycols applied to an antifreeze solution or a coolant, comprising: a) an unsaturated monoethylenedicarboxylic acid having 4 to 6 carbon atoms or a salt thereof (hereinafter referred to as "mono"). Ethylene dicarboxylic acids), or a polymer comprising an unsaturated monoethylene monocarboxylic acid having 4 to 6 carbon atoms or a salt thereof (hereinafter, referred to as monoethylene monocarboxylic acids), or a mixture of the above monoethylene dicarboxylic acids and monoethylene monocarboxylic acids. An antifreeze / cooling liquid composition comprising: at least one selected from copolymers consisting of: and b) at least one selected from carboxylic acids or salts thereof.
で含有することを特徴とする請求項１記載の不凍液／冷
却液組成物。2. The antifreeze / cooling liquid composition according to claim 1, wherein component (a) is contained in a ratio of 0.001 to 1% by weight.
あることを特徴とする請求項１記載の不凍液／冷却液組
成物。3. The antifreeze / coolant composition according to claim 1, wherein the molecular weight of component a) is from 100 to 2,000.
酸であることを特徴とする請求項１記載の不凍液／冷却
液組成物。4. The antifreeze / coolant composition according to claim 1, wherein the monoethylenedicarboxylic acid is maleic acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000090838A JP2001279235A (en) | 2000-03-29 | 2000-03-29 | Antifreeze/coolant composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000090838A JP2001279235A (en) | 2000-03-29 | 2000-03-29 | Antifreeze/coolant composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001279235A true JP2001279235A (en) | 2001-10-10 |
Family
ID=18606385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000090838A Pending JP2001279235A (en) | 2000-03-29 | 2000-03-29 | Antifreeze/coolant composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001279235A (en) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004041956A1 (en) * | 2002-11-05 | 2004-05-21 | Shishiai-Kabushikigaisha | Heat transfer medium liquid composition |
| WO2004074397A1 (en) * | 2003-01-29 | 2004-09-02 | Fukutani, Kikuko | Antifreeze solution, and rust inhibitor capable of being used as component thereof |
| WO2005052086A1 (en) * | 2003-11-26 | 2005-06-09 | Shishiai-Kabushikigaisha | Cooling fluid composition |
| WO2005054398A1 (en) * | 2003-12-01 | 2005-06-16 | Shishiai-Kabushikigaisha | Coolant composition |
| JP2005203148A (en) * | 2004-01-13 | 2005-07-28 | Toyota Motor Corp | Coolant and cooling system |
| JP2006045345A (en) * | 2004-08-04 | 2006-02-16 | Asahi Denka Kogyo Kk | Antifreeze liquid composition |
| JPWO2005054397A1 (en) * | 2003-12-01 | 2007-06-28 | シーシーアイ株式会社 | Coolant composition |
| JPWO2005054396A1 (en) * | 2003-12-01 | 2007-06-28 | シーシーアイ株式会社 | Coolant composition |
| US7258814B2 (en) | 2003-10-01 | 2007-08-21 | Shishiai-Kabushikigaisha | Coolant composition and methods of use thereof |
| WO2007116478A1 (en) * | 2006-03-31 | 2007-10-18 | Shishiai-Kabushikigaisha | Coolant composition |
| JP2010236064A (en) * | 2009-03-31 | 2010-10-21 | Cci Corp | Liquid coolant composition |
| US8187763B2 (en) | 2003-07-11 | 2012-05-29 | Honda Motor Co., Ltd. | Cooling liquid composition for fuel cell |
| WO2013042837A1 (en) | 2011-09-23 | 2013-03-28 | 극동제연공업 주식회사 | Composition having enhanced corrosion resistance and ph buffering property for antifreeze liquid or coolant |
| KR101296849B1 (en) | 2006-12-21 | 2013-08-14 | 주식회사 지코스 | GLYCERINE Antifreeze composition |
| EP3369797A1 (en) * | 2017-03-02 | 2018-09-05 | EKWB d.o.o. | Cooling liquid composition for a liquid cooling system for cooling a heat generating element arranged on a printed circuit board |
| JP7019224B1 (en) | 2021-02-25 | 2022-02-15 | 大同化学株式会社 | Water-soluble rust inhibitor composition and its usage |
-
2000
- 2000-03-29 JP JP2000090838A patent/JP2001279235A/en active Pending
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004041956A1 (en) * | 2002-11-05 | 2004-05-21 | Shishiai-Kabushikigaisha | Heat transfer medium liquid composition |
| WO2004074397A1 (en) * | 2003-01-29 | 2004-09-02 | Fukutani, Kikuko | Antifreeze solution, and rust inhibitor capable of being used as component thereof |
| JPWO2004074397A1 (en) * | 2003-01-29 | 2006-06-01 | 福谷 貴子 | Antifreeze liquid and rust inhibitor usable in it |
| US8187763B2 (en) | 2003-07-11 | 2012-05-29 | Honda Motor Co., Ltd. | Cooling liquid composition for fuel cell |
| US7258814B2 (en) | 2003-10-01 | 2007-08-21 | Shishiai-Kabushikigaisha | Coolant composition and methods of use thereof |
| JPWO2005052086A1 (en) * | 2003-11-26 | 2007-06-21 | シーシーアイ株式会社 | Coolant composition |
| WO2005052086A1 (en) * | 2003-11-26 | 2005-06-09 | Shishiai-Kabushikigaisha | Cooling fluid composition |
| JPWO2005054396A1 (en) * | 2003-12-01 | 2007-06-28 | シーシーアイ株式会社 | Coolant composition |
| JPWO2005054398A1 (en) * | 2003-12-01 | 2007-06-28 | シーシーアイ株式会社 | Coolant composition |
| JPWO2005054397A1 (en) * | 2003-12-01 | 2007-06-28 | シーシーアイ株式会社 | Coolant composition |
| WO2005054398A1 (en) * | 2003-12-01 | 2005-06-16 | Shishiai-Kabushikigaisha | Coolant composition |
| JP2005203148A (en) * | 2004-01-13 | 2005-07-28 | Toyota Motor Corp | Coolant and cooling system |
| JP4671326B2 (en) * | 2004-08-04 | 2011-04-13 | 株式会社Ａｄｅｋａ | Antifreeze composition |
| JP2006045345A (en) * | 2004-08-04 | 2006-02-16 | Asahi Denka Kogyo Kk | Antifreeze liquid composition |
| WO2007116478A1 (en) * | 2006-03-31 | 2007-10-18 | Shishiai-Kabushikigaisha | Coolant composition |
| KR101296849B1 (en) | 2006-12-21 | 2013-08-14 | 주식회사 지코스 | GLYCERINE Antifreeze composition |
| JP2010236064A (en) * | 2009-03-31 | 2010-10-21 | Cci Corp | Liquid coolant composition |
| WO2013042837A1 (en) | 2011-09-23 | 2013-03-28 | 극동제연공업 주식회사 | Composition having enhanced corrosion resistance and ph buffering property for antifreeze liquid or coolant |
| EP3369797A1 (en) * | 2017-03-02 | 2018-09-05 | EKWB d.o.o. | Cooling liquid composition for a liquid cooling system for cooling a heat generating element arranged on a printed circuit board |
| WO2018158082A1 (en) * | 2017-03-02 | 2018-09-07 | EKWB d.o.o. | Cooling liquid composition for a liquid cooling system for cooling a heat generating element arranged on a printed circuit board |
| CN110382659A (en) * | 2017-03-02 | 2019-10-25 | 艾克伯有限责任公司 | Cooling liquid composition in cooling liquid cooling system is carried out to the thermogenesis element of setting on a printed circuit |
| JP7019224B1 (en) | 2021-02-25 | 2022-02-15 | 大同化学株式会社 | Water-soluble rust inhibitor composition and its usage |
| JP2022130273A (en) * | 2021-02-25 | 2022-09-06 | 大同化学株式会社 | Water-soluble rust-preventive agent composition and method for using the same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2862007B2 (en) | Corrosion inhibiting antifreeze composition | |
| US4851145A (en) | Corrosion-inhibited antifreeze/coolant composition | |
| JP2001279235A (en) | Antifreeze/coolant composition | |
| JP4980534B2 (en) | Antifreeze concentrates based on dicarboxylic acids, molybdates and triazoles or thiazoles and refrigerant compositions containing these antifreeze concentrates | |
| US4647392A (en) | Monobasic-dibasic acid/salt antifreeze corrosion inhibitor | |
| JP3113021B2 (en) | Antifreeze / coolant compositions containing aromatic carboxylic acids and having corrosion inhibiting properties | |
| JPH06116764A (en) | Antifreeze composition | |
| KR19990077315A (en) | Use of quaternized imidazoles as nonferrous metal corrosion inhibitors, concentrated antifreeze and coolant compositions containing depressants | |
| AU5682500A (en) | Silicate, borate and phosphate-free glycol based cooling liquids with improved corrosion stability | |
| JP3941030B2 (en) | Low phosphorus coolant composition | |
| JPH0885782A (en) | Antifreeze composition | |
| JP3790860B2 (en) | Coolant composition | |
| JP3845702B2 (en) | Antifreeze / coolant composition | |
| JP2916721B2 (en) | Coolant composition | |
| WO2005052086A1 (en) | Cooling fluid composition | |
| JP3829171B2 (en) | Antifreeze / coolant composition | |
| JP3686120B2 (en) | Antifreeze composition | |
| JPH09263976A (en) | Blackening preventive agent of aluminum or aluminum alloy in cooling liquid and cooling liquid composition containing the same | |
| WO2005037950A1 (en) | Cooling fluid composition | |
| JP4214302B2 (en) | Anti-blackening agent and antifreeze / coolant composition using the same | |
| JP2000219981A (en) | Antifreezing solution composition | |
| JP2002322467A (en) | Coolant composition | |
| JP4214301B2 (en) | Anti-blackening agent and antifreeze / coolant composition using the same | |
| JPH1046134A (en) | Antifreeze composition | |
| JP4671326B2 (en) | Antifreeze composition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20061227 |
|
| RD02 | Notification of acceptance of power of attorney |
Free format text: JAPANESE INTERMEDIATE CODE: A7422 Effective date: 20080214 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20080303 |
|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 20080708 |