WO2005054398A1 - 冷却液組成物 - Google Patents
冷却液組成物 Download PDFInfo
- Publication number
- WO2005054398A1 WO2005054398A1 PCT/JP2003/015331 JP0315331W WO2005054398A1 WO 2005054398 A1 WO2005054398 A1 WO 2005054398A1 JP 0315331 W JP0315331 W JP 0315331W WO 2005054398 A1 WO2005054398 A1 WO 2005054398A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- acid
- aluminum
- salts
- gallic acid
- cooling liquid
- Prior art date
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
- C23F11/12—Oxygen-containing compounds
-
- 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
Definitions
- the present invention relates to a coolant composition mainly used for a coolant of an internal combustion engine, and more particularly to a method in which aluminum and an aluminum alloy discolor black in the coolant.
- the present invention relates to a cooling liquid composition for preventing the occurrence of a cooling liquid.
- BACKGROUND ART Metals such as aluminum, aluminum alloys, iron, steel, brass, solder, and copper are used in cooling systems of internal combustion engines such as engines. These metals can corrode on contact with water or air.
- coolant compositions containing corrosion inhibitors such as phosphates, silicates, amine salts, or borates have been proposed.
- these corrosion inhibitors have the following disadvantages.
- phosphates flow into rivers, etc., they cause eutrophication, raising BOD and COD in the water, causing algae to proliferate, and as a result, there is a problem that red tide and slime are generated. .
- phosphate reacts with the hard water component contained in the cooling liquid to form a precipitate, which lowers the function of the cooling liquid to prevent corrosion. It caused a situation of being blocked.
- the amine salt has a disadvantage that it easily reacts with nitrite to produce nitrosamine, a carcinogen.
- silicates have poor stability in coolant, When H changed or when other salts coexisted, it easily gelled, and the corrosion prevention function was deteriorated.
- borate has a disadvantage that it easily corrodes aluminum and aluminum alloys. Therefore, a cooling liquid composition containing a carboxylic acid such as a hydrocarbon carboxylic acid as a corrosion inhibitor instead of the phosphate, amine salt, silicate or borate having the above-mentioned problem has been proposed.
- the carboxylic acid blackened the surface of the aluminum or aluminum alloy in the coolant. The blackening of the surface of the aluminum or aluminum alloy is caused by the carboxylic acid forming a passive black oxide film of aluminum oxide on the surface of aluminum or aluminum alloy in a cooling liquid.
- Examples of the corrosion inhibitor in which a gallic acid compound is used include, for example, those containing tannic acid or a tannate salt and gallic acid as a reduced phenol compound (Japanese Patent No. 2845552). Report). Disclosure of the invention Problems to be Solved by the Invention The present invention has been made in view of the above circumstances, and provides a cooling liquid composition having excellent anti-blackening properties for aluminum and aluminum alloy in a cooling system. The purpose is to provide. Means for Solving the Problems In order to solve the above problems, the present invention provides a cooling liquid composition containing a glycol as a main component, wherein (a) 0.01 to 10% by weight.
- daricols which are the main components of the coolant composition of the present invention (hereinafter, simply referred to as the composition) include ethylene glycol, propylene glycol, 1,3-butylendalcol, hexylene daryl, diethylene glycol, glycerin, and the like.
- ethylene glycol or propylene glycol is preferred from the viewpoints of chemical stability, handleability, price, and availability.
- aliphatic monocarboxylic acids include butyric acid, pentanoic acid, caproic acid, heptanoic acid, caprylic acid, nonanoic acid, capric acid, pendecanoic acid, lauric acid, and oleic acid. Acids, linoleic acid, linolenic acid, ricinoleic acid, stearic acid, 2-ethylbutyric acid, 2-ethylhexanoic acid, and the like.
- Examples of the aliphatic dicarboxylic acids include oxalic acid, malonic acid, succinic acid, daltaric acid, and the like.
- Aromatic carboxylic acids include benzoic acid, toluic acid, isopropyl benzoic acid, 4-tert-butyl benzoic acid, mercapto benzoic acid, black benzoic acid, amino benzoic acid, hydroxy benzoic acid, dihydroxy benzoic acid, trihydroxy benzoic acid Nitrobenzoic acid, 3-methoxy-2-nitrobenzoic acid, dinitrobenzoic acid, methoxybenzoic acid, dimethoxybenzoic acid, and cinnamic acid.
- Examples of the salts of aliphatic carboxylic acids or aromatic carboxylic acids include alkali metal salts and ammonium salts. Can be mentioned. Aliphatic carboxylic acids, aromatic carboxylic acids or salts thereof are contained in the range of 0.1 to 10% by weight. If the content is less than 0.1% by weight, the corrosion prevention function will be inadequate, and if the content is more than 10% by weight, the effect of the excess will not be obtained, and it will be uneconomical. is there.
- the composition according to the present invention may contain thiazoles, triazoles, and magnesium compounds in addition to the components (a) and (b).
- the cooling liquid composition of the present invention (a) 0.01 to 10% by weight of at least one of gallic acid, a gallic acid derivative, a catechol or a salt thereof, and (b) ) 0.1 to 10% by weight of an aliphatic carboxylic acid, an aromatic carboxylic acid or at least one of their salts, so that the metal used for the cooling system of the internal combustion engine, in particular, aluminum, It is possible to provide a coolant composition having an excellent effect of preventing blackening of an aluminum alloy.
- BEST MODE FOR CARRYING OUT THE INVENTION the composition of the present invention will be described in more detail.
- Example 1 contains n-octyl gallate as the component (a) and sebacic acid and toluic acid as the component (b), and further contains magnesium nitrate and tolyltriazole.
- Example 1 further includes 2-mercaptobenzothiazole soda, and
- Example 3 includes 4-tert-butylbutyl cholesterol in place of n-galactyl gallate as the component (a) in Example 1.
- Comparative Example 1 was obtained by removing toluic acid and sebacic acid from Example 1, and Comparative Example 2 was the same as Comparative Example 1 except that the blending amount of gallic acid n-butyl octyl was 1.0% by weight.
- Comparative Example 3 is the same as Example 1 except that the component (a), n-galactyl gallate, was removed.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2003/015331 WO2005054398A1 (ja) | 2003-12-01 | 2003-12-01 | 冷却液組成物 |
JP2005511255A JPWO2005054398A1 (ja) | 2003-12-01 | 2003-12-01 | 冷却液組成物 |
AU2003304593A AU2003304593A1 (en) | 2003-12-01 | 2003-12-01 | Coolant composition |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2003/015331 WO2005054398A1 (ja) | 2003-12-01 | 2003-12-01 | 冷却液組成物 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005054398A1 true WO2005054398A1 (ja) | 2005-06-16 |
Family
ID=34640417
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/015331 WO2005054398A1 (ja) | 2003-12-01 | 2003-12-01 | 冷却液組成物 |
Country Status (3)
Country | Link |
---|---|
JP (1) | JPWO2005054398A1 (ja) |
AU (1) | AU2003304593A1 (ja) |
WO (1) | WO2005054398A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017221060A1 (en) | 2016-06-24 | 2017-12-28 | Toyota Jidosha Kabushiki Kaisha | Automotive engine coolant composition, automotive engine concentrated coolant composition, and method of operating internal combustion engine |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58133382A (ja) * | 1982-02-03 | 1983-08-09 | Katayama Chem Works Co Ltd | 塩化カルシウムブライン用防食剤 |
JP2001279235A (ja) * | 2000-03-29 | 2001-10-10 | Cci Corp | 不凍液/冷却液組成物 |
JP2002275664A (ja) * | 2001-03-16 | 2002-09-25 | Kurita Water Ind Ltd | 高温水系または蒸気発生系の腐食抑制剤 |
JP2002322467A (ja) * | 2001-04-25 | 2002-11-08 | Toyota Motor Corp | 冷却液組成物 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB961409A (en) * | 1961-05-24 | 1964-06-24 | United States Borax Chem | Corrosion inhibitor compositions |
JP2852136B2 (ja) * | 1991-03-29 | 1999-01-27 | オルガノ株式会社 | 金属防食剤 |
JP2916721B2 (ja) * | 1991-10-18 | 1999-07-05 | シーシーアイ株式会社 | 冷却液組成物 |
JPH1046134A (ja) * | 1996-08-02 | 1998-02-17 | Nippon Chem Kogyo Kk | 不凍液組成物 |
-
2003
- 2003-12-01 JP JP2005511255A patent/JPWO2005054398A1/ja active Pending
- 2003-12-01 AU AU2003304593A patent/AU2003304593A1/en not_active Abandoned
- 2003-12-01 WO PCT/JP2003/015331 patent/WO2005054398A1/ja active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58133382A (ja) * | 1982-02-03 | 1983-08-09 | Katayama Chem Works Co Ltd | 塩化カルシウムブライン用防食剤 |
JP2001279235A (ja) * | 2000-03-29 | 2001-10-10 | Cci Corp | 不凍液/冷却液組成物 |
JP2002275664A (ja) * | 2001-03-16 | 2002-09-25 | Kurita Water Ind Ltd | 高温水系または蒸気発生系の腐食抑制剤 |
JP2002322467A (ja) * | 2001-04-25 | 2002-11-08 | Toyota Motor Corp | 冷却液組成物 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2017221060A1 (en) | 2016-06-24 | 2017-12-28 | Toyota Jidosha Kabushiki Kaisha | Automotive engine coolant composition, automotive engine concentrated coolant composition, and method of operating internal combustion engine |
DE112017003138T5 (de) | 2016-06-24 | 2019-03-14 | Toyota Jidosha Kabushiki Kaisha | Kühlmittelzusammensetzung für Automotoren; konzentrierte Kühlmittelzusammensetzung für Automotoren, und Verfahren zum Betreiben eines Verbrennungsmotors |
US10883031B2 (en) | 2016-06-24 | 2021-01-05 | Toyota Jidosha Kabushiki Kaisha | Automotive engine coolant composition, automotive engine concentrated coolant composition, and method of operating internal combustion engine |
Also Published As
Publication number | Publication date |
---|---|
JPWO2005054398A1 (ja) | 2007-06-28 |
AU2003304593A1 (en) | 2005-06-24 |
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