WO2005037950A1 - 冷却液組成物 - Google Patents
冷却液組成物 Download PDFInfo
- Publication number
- WO2005037950A1 WO2005037950A1 PCT/JP2003/016648 JP0316648W WO2005037950A1 WO 2005037950 A1 WO2005037950 A1 WO 2005037950A1 JP 0316648 W JP0316648 W JP 0316648W WO 2005037950 A1 WO2005037950 A1 WO 2005037950A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- acid
- weight
- composition according
- corrosion
- salt
- Prior art date
Links
Classifications
-
- 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
-
- 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
Definitions
- the present invention relates to a coolant composition mainly used for a coolant such as an internal combustion engine. More specifically, the present invention relates to a coolant composition having excellent hard water stability and excellent corrosion prevention of aluminum or aluminum alloy at high temperatures.
- metals such as aluminum, aluminum alloys, iron, steel, brass, solder, and copper have been used in the cooling system of internal combustion engines.
- aluminum or aluminum alloys have been widely used for cooling system components in order to reduce the weight of automobile bodies. These metals corrode on contact with water or air.
- the coolant composition applied to the cooling system of internal combustion engines such as engines is used to prevent metal corrosion such as phosphates, amine salts, borates, nitrites, silicates, and organic acids. Agent was included.
- phosphates have been used in many coolant compositions because of their excellent corrosion protection of aluminum or aluminum alloys.
- phosphate reacts with the hard water component to form a precipitate, and when diluted with hard water, a large amount of precipitate is generated.
- the formation of sediment not only reduced the corrosion-prevention function of the coolant, but also caused the generated sediment to accumulate in the circulation path of the cooling system, causing the cooling system to be blocked.
- Borates on the other hand, are corrosive to aluminum or aluminum alloys.Gayates are less stable in liquids and are easier to use when temperature or pH changes, or when other salts coexist. Gels easily and separates, which reduces the corrosion prevention function There was a problem of doing. As for amine salts and nitrites, their coexistence in the coolant could produce ditrosoamine, which is harmful to the human body.
- any of the known metal corrosion inhibitors effective in preventing aluminum or aluminum alloys have various problems in use, and have excellent corrosion inhibitory properties against aluminum or aluminum alloys.
- the development of the indicated corrosion inhibitor was desired. Therefore, 2-phosphonobutane 1, 2, 4 tricarboxylic acid or a water-soluble salt thereof has been proposed as a corrosion inhibitor for solving such problems.
- This corrosion inhibitor exhibits excellent corrosion protection against contact between dissimilar metals, especially between aluminum alloys, iron and solder, and dissimilar metals. It demonstrates.
- this corrosion inhibitor is a low-poisoning, low-poisoning corrosion inhibitor that is less likely to cause eutrophication of rivers.
- the present applicant has proposed a coolant composition using 2_phosphonobutane 1,2,4 tricarboxylic acid having such excellent functions.
- This cooling liquid composition is characterized by containing phosphate, nitrate, benzoate and triazole together with 2-phosphonobutane 1, 2, 4 tricarboxylic acid or a water-soluble salt thereof ( See Japanese Patent Application Laid-Open No. 7-173653).
- this coolant composition had a problem that the amount of corrosion was large in an aluminum heat transfer surface corrosion test in a high temperature range exceeding 150 ° C.
- DISCLOSURE OF THE INVENTION The present invention has been made in view of such circumstances, and has been described as having excellent hard water stability.
- the present invention relates to a coolant composition containing glycols as a main component, comprising: (a) 0.1 to 10% by weight of an alkylbenzoic acid, an aliphatic dicarboxylic acid, and a salt thereof.
- polycarboxylic acids polymer
- a coolant composition characterized
- Examples of the daricols that are the main components of the coolant composition of the present invention include ethylene glycol, propylene glycol, 1,3-butylendalcol, hexylene daryl, diethylene glycol, glycerin, and the like.
- ethylene glycol or propylene glycol is desirable from the viewpoint of chemical stability, handleability, price, availability and the like.
- the composition of the present invention contains the four components (a) to (d) in the main component.
- the four components (a) to (d) have excellent hard water stability and can be used at high temperatures. In this case, the effect of excelling in corrosion prevention of aluminum or aluminum alloys is being derived.
- alkylbenzoic acids are known as corrosion inhibitors having excellent corrosion inhibiting properties for aluminum or aluminum alloys.
- aliphatic dicarboxylic acid is also a component known as a corrosion inhibitor excellent in corrosion inhibition of aluminum or aluminum alloy, and specifically, oxalic acid, malonic acid, succinic acid, daltalic acid, adipic acid, Piperic acid, suberic acid, azelaic acid, sebacic acid, brassic acid, tabucic acid, undecane diacid, and dodecane diacid, or alkali metal salts or ammonium salts thereof.
- suberic acid, azelaic acid, sebacic acid, pendecane diacid, and dodecane diacid are preferred because of their excellent corrosion protection.
- the component (a) is contained in the composition in the range of 0.1 to 10% by weight. If the content of the component (a) is out of the above range, sufficient corrosion prevention performance of aluminum or aluminum alloy cannot be obtained or it becomes uneconomical.
- Examples of the phosphate as the component (b) include orthophosphoric acid, pyrophosphoric acid, trimetaphosphoric acid, and tetrametaphosphoric acid. By including one or more of these, aluminum The anti-corrosion properties of the alloy will be further improved, and the anti-corrosion effect of ferrous metals such as iron and steel will be further improved. This phosphate is contained in the range of 0.01 to 2.0% by weight.
- the component (c) is 2-phosphonobutane-1, 2, 4 tricarboxylic acid, or a water-soluble salt such as a sodium salt or a potassium salt thereof. It exhibits excellent corrosion protection against contact corrosion and also exhibits excellent corrosion protection performance against heat transfer surface corrosion of aluminum.
- Component (c) 2-phosphonobutane-11,2,4 tricarboxylic acid or a water-soluble salt thereof, is contained in the range of 0.01 to 0.5% by weight.
- the content of 2-phosphonobutane-1, 2, 4 tricarboxylic acid or a water-soluble salt thereof is less than 0.01% by weight, the anticorrosion effect of the aluminum alloy against contact corrosion with a dissimilar metal, and This is because the anti-corrosion performance of aluminum against the heat transfer surface corrosion is not sufficiently exhibited, and if it exceeds 0.5% by weight, the anti-corrosion effect against the contact corrosion between the above-mentioned solder and other metals is not sufficiently exhibited.
- composition of the present invention further contains, as an essential component, component (d) in addition to the above three components (a) to (c).
- component (d) in addition to the above three components (a) to (c).
- monoethylenedicarboxylic acids in the polycarboxylic acids and the like as the component (d) include, for example, maleic acid, fumaric acid, itaconic acid, citraconic acid, mesaconic acid, and alkali metal salts and ammonium salts thereof.
- monoethylene monocarboxylic acids include acrylic acid, methacrylic acid, ethacrylic acid, vinyl acetic acid, and alkali metal salts and ammonium salts thereof.
- monoethylene dicarboxylic acid polymers and copolymers examples include polymaleic acid and polymaleic acid.
- Acrylic acid, maleic acid and Z-acrylic acid copolymer can be mentioned.
- These polycarboxylic acids are excellent in preventing corrosion of the heat transfer surface of aluminum or aluminum alloy at high temperatures. It acts to effectively suppress the formation of a precipitate by reaction with phosphate.
- polymaleic acid or its sodium, potassium, or ammonium salt is excellent in preventing corrosion of the heat transfer surface of aluminum or aluminum alloys at high temperatures and stability when diluted with hard water.
- the molecular weight of the polymer or copolymer in the above-mentioned polycarboxylic acids and the like is preferably 100 to 2000. If the molecular weight is below 100, sufficient heat transfer surface Corrosion inhibition and hard water stability cannot be obtained, and when the molecular weight exceeds 20000, it becomes difficult to dissolve in the composition.
- the copolymer is in a polymerization form such as random polymerization or block polymerization.
- Polycarboxylic acids and the like are contained in a range of 0.01 to 0.5% by weight, preferably in a range of 0.05 to 0.3% by weight.
- the composition of the present invention can also take a form containing nitrates, triazoles or thiazoles in addition to the above four components (a) to (d).
- nitrates include sodium nitrate and potassium nitrate.
- triazoles include benzotriazole, tolyltriazole, 4-phenyl-1,2,3-triazole, 2-naphthotriazole and 4-nitrobenzotriazole, among which, Particularly preferred are benzotriazole and tolyltriazole.
- thiazoles include benzothiazole and mercaptobenzothiazole. The addition of these triazoles or thiazoles has been attempted to improve the corrosion prevention effect of copper metals such as brass and copper.
- the content of triazoles is preferably in the range of 0.05 to 1.0% by weight, and the content of thiazoles is preferably in the range of 0.01 to 1.0% by weight.
- composition of the present invention be in a form that does not contain a maleate and a borate.
- Borates are corrosive to aluminum or aluminum alloys, while gates are less stable in liquids and vary in temperature and pH. In the case, or when other salts coexist, it is easily gelled and separated,
- composition of the present invention may further contain an antifoaming agent, a coloring agent, and the like in addition to the above components.
- composition of the present invention (a) 0.1 to 10% by weight of at least one selected from alkylbenzoic acids, aliphatic dicarboxylic acids, and salts thereof, and (b) 0.01% (C) 0.01 to 0.5% by weight of 2-phosphonoptane-1,2,4-tricarboxylic acid or a salt thereof; and (d) 0.01 to 0.5% by weight of a phosphate salt. Since 0.5% by weight of a polycarboxylic acid and the like are contained, the present invention has an effect of being excellent in hard water stability and also excellent in preventing corrosion of aluminum or aluminum alloy in a high temperature range exceeding 150 ° C, for example.
- the pH value (30%) in each example in Table 1 is 7.8.
- Example 1 and 2 and Comparative Examples 1 to 3 were subjected to a high-temperature metal corrosion test to confirm the change in mass (mg / cm 2 ) of each metal and the presence or absence of abnormalities in appearance. Table 2 shows the results.
- the metal corrosion test is JIS
- the test was conducted in accordance with the K 223 metal corrosivity specification, and aluminum metal, iron, steel, brass, solder, and copper test pieces were used as the metals for this test.
- the test was performed under the conditions of 100 ° (:, 1000 hours).
- the test was performed in a pressurized closed container without ventilating air.
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 (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005509619A JPWO2005037950A1 (ja) | 2003-10-16 | 2003-12-24 | 冷却液組成物 |
EP03786296.8A EP1681332B1 (en) | 2003-10-16 | 2003-12-24 | Cooling fluid composition |
AU2003296104A AU2003296104A1 (en) | 2003-10-16 | 2003-12-24 | Cooling fluid composition |
CN2003801105528A CN1860199B (zh) | 2003-10-16 | 2003-12-24 | 冷却剂组合物 |
US11/403,739 US20060237686A1 (en) | 2003-10-16 | 2006-04-13 | Coolant composition |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003355951 | 2003-10-16 | ||
JP2003-355951 | 2003-10-16 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/403,739 Continuation-In-Part US20060237686A1 (en) | 2003-10-16 | 2006-04-13 | Coolant composition |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005037950A1 true WO2005037950A1 (ja) | 2005-04-28 |
Family
ID=34463182
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/016648 WO2005037950A1 (ja) | 2003-10-16 | 2003-12-24 | 冷却液組成物 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20060237686A1 (ja) |
EP (1) | EP1681332B1 (ja) |
JP (1) | JPWO2005037950A1 (ja) |
CN (1) | CN1860199B (ja) |
AU (1) | AU2003296104A1 (ja) |
WO (1) | WO2005037950A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7645331B2 (en) * | 2005-10-25 | 2010-01-12 | Honeywell International Inc. | Heat transfer fluid compositions for cooling systems containing magnesium or magnesium alloys |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005006476A1 (ja) | 2003-07-11 | 2005-01-20 | Shishiai-Kabushikigaisha | 燃料電池用冷却液組成物 |
CN100584919C (zh) * | 2003-10-01 | 2010-01-27 | Cci株式会社 | 冷却液组合物 |
CN1297623C (zh) * | 2004-07-23 | 2007-01-31 | 中国石油化工股份有限公司 | 一种提高发动机冷却液稳定性的方法 |
US9115302B2 (en) | 2012-09-05 | 2015-08-25 | Chevron U.S.A. Inc. | Coolant having rapid metal passivation properties |
CN105419734A (zh) * | 2015-11-16 | 2016-03-23 | 惠州市沃斯润滑科技有限公司 | 一种发动机冷却液 |
CN107629764A (zh) * | 2017-09-04 | 2018-01-26 | 可附特汽车零部件制造(北京)有限公司 | 一种用于四季的防冻液组合物 |
JP2019143053A (ja) * | 2018-02-21 | 2019-08-29 | トヨタ自動車株式会社 | 冷却液組成物 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62205183A (ja) * | 1986-02-28 | 1987-09-09 | テキサコ・デベロツプメント・コ−ポレ−シヨン | 安定化された、リン酸ベ−スの不凍液用濃縮物組成物及び該組成物を含む水性冷却液組成物 |
EP0557761A1 (de) * | 1992-02-18 | 1993-09-01 | BASF Aktiengesellschaft | Hartwasserstabile, phosphathaltige Kühlstoffmischungen |
JPH07173651A (ja) * | 1993-12-21 | 1995-07-11 | C C I Kk | 冷却液組成物 |
JP2000239658A (ja) * | 1999-02-22 | 2000-09-05 | Ipposha Oil Ind Co Ltd | 冷却液組成物 |
EP1081250A1 (en) * | 1999-09-02 | 2001-03-07 | CCI Kabushiki Kaisha | Low phosphorus coolant composition |
US6309559B1 (en) * | 1999-07-02 | 2001-10-30 | Clariant Gmbh | Silicate-, borate-and phosphate-free cooling fluids based on glycols and having improved corrosion behavior |
JP2003213465A (ja) * | 2002-01-16 | 2003-07-30 | Toyota Motor Corp | 自動車用冷却水の再生方法及び再生用添加剤 |
Family Cites Families (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2959547A (en) * | 1957-01-31 | 1960-11-08 | Ray S Pyle | Aqueous coolant for metal working machines |
DE2653933A1 (de) * | 1976-11-27 | 1978-06-01 | Henkel Kgaa | Verwendung von cyclohexanhexacarbonsaeure als korrosionsinhibitor fuer brauchwassersysteme |
US4105581A (en) * | 1977-02-18 | 1978-08-08 | Drew Chemical Corporation | Corrosion inhibitor |
DE2942864C2 (de) * | 1979-10-24 | 1986-11-20 | Hüls AG, 4370 Marl | Kavitationshemmmende, frostsichere Wärmeübertragungsflüssigkeit |
US4351796A (en) * | 1980-02-25 | 1982-09-28 | Ciba-Geigy Corporation | Method for scale control |
US4418231A (en) * | 1981-08-07 | 1983-11-29 | Ppg Industries, Inc. | Corrosion inhibited solvent compositions |
US4600524A (en) * | 1983-12-08 | 1986-07-15 | W. R. Grace & Co. | Composition and method for inhibiting scale |
US4806310A (en) * | 1985-06-14 | 1989-02-21 | Drew Chemical Corporation | Corrosion inhibitor |
DE3876325T2 (de) * | 1987-06-16 | 1993-04-29 | Nippon Catalytic Chem Ind | Frostschutzzusammensetzung. |
US5042986A (en) * | 1989-10-13 | 1991-08-27 | The Dow Chemical Company | Wrinkle resistant cellulosic textiles |
US5290468A (en) * | 1991-07-23 | 1994-03-01 | Basf Corporation | Polycarboxylate-containing antifreeze/coolant additive for use in hard water applications |
US5269956A (en) * | 1991-09-25 | 1993-12-14 | Texaco Chemical Co. | Compatible corrosion inhibitor combinations |
EP0805843A1 (en) * | 1995-01-25 | 1997-11-12 | National Aeronautics And Space Administration | Anti-icing fluid or deicing fluid |
FR2733509B1 (fr) * | 1995-04-28 | 1997-07-04 | Bp Chemicals Snc | Composition d'antigel et fluide aqueux comprenant la composition |
EP0833400B1 (en) * | 1995-05-25 | 2005-08-03 | Honda Giken Kogyo Kabushiki Kaisha | Fuel cell and method for its control |
DE19625692A1 (de) * | 1996-06-27 | 1998-01-02 | Basf Ag | Silikat-, borat- und nitratfreie Gefrierschutzmittelkonzentrate und diese umfassende Kühlmittelzusammensetzungen |
JP3499090B2 (ja) * | 1996-08-07 | 2004-02-23 | 本田技研工業株式会社 | 燃料電池 |
US5766506A (en) * | 1996-09-12 | 1998-06-16 | The Dow Chemical Company | Hard water compatible phosphate-containing heat transfer fluids |
US6585933B1 (en) * | 1999-05-03 | 2003-07-01 | Betzdearborn, Inc. | Method and composition for inhibiting corrosion in aqueous systems |
US6391257B1 (en) * | 1998-08-19 | 2002-05-21 | Prestone Products Corporation | Antifreeze compositions comprising carboxylic acid and cyclohexenoic acid |
ES2367352T3 (es) * | 1999-04-28 | 2011-11-02 | Genetics Institute, Llc | Tratamiento de la fibrosis meidante el antagonismo de la il-3 y de las cadenas del receptor del il-3. |
CN1218009C (zh) * | 1999-10-29 | 2005-09-07 | 巴斯福股份公司 | 基于二羧酸、钼酸盐和***或噻唑的防冻浓缩物以及包含它们的冷却剂组合物 |
US6361891B1 (en) * | 1999-12-20 | 2002-03-26 | Utc Fuel Cells, Llc | Direct antifreeze cooled fuel cell power plant system |
US6814885B2 (en) * | 2000-05-05 | 2004-11-09 | Rhodia Consumer Specialties Limited | Scale and corrosion inhibitors |
JP4119622B2 (ja) * | 2001-04-25 | 2008-07-16 | トヨタ自動車株式会社 | 冷却液組成物 |
CA2398423C (en) * | 2001-09-04 | 2009-11-10 | Rohm And Haas Company | Corrosion inhibiting compositions |
JP2005325300A (ja) * | 2004-05-17 | 2005-11-24 | Toyota Motor Corp | 冷却液組成物 |
-
2003
- 2003-12-24 WO PCT/JP2003/016648 patent/WO2005037950A1/ja active Application Filing
- 2003-12-24 EP EP03786296.8A patent/EP1681332B1/en not_active Expired - Lifetime
- 2003-12-24 CN CN2003801105528A patent/CN1860199B/zh not_active Expired - Lifetime
- 2003-12-24 JP JP2005509619A patent/JPWO2005037950A1/ja active Pending
- 2003-12-24 AU AU2003296104A patent/AU2003296104A1/en not_active Abandoned
-
2006
- 2006-04-13 US US11/403,739 patent/US20060237686A1/en not_active Abandoned
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62205183A (ja) * | 1986-02-28 | 1987-09-09 | テキサコ・デベロツプメント・コ−ポレ−シヨン | 安定化された、リン酸ベ−スの不凍液用濃縮物組成物及び該組成物を含む水性冷却液組成物 |
EP0557761A1 (de) * | 1992-02-18 | 1993-09-01 | BASF Aktiengesellschaft | Hartwasserstabile, phosphathaltige Kühlstoffmischungen |
JPH07173651A (ja) * | 1993-12-21 | 1995-07-11 | C C I Kk | 冷却液組成物 |
JP2000239658A (ja) * | 1999-02-22 | 2000-09-05 | Ipposha Oil Ind Co Ltd | 冷却液組成物 |
US6309559B1 (en) * | 1999-07-02 | 2001-10-30 | Clariant Gmbh | Silicate-, borate-and phosphate-free cooling fluids based on glycols and having improved corrosion behavior |
EP1081250A1 (en) * | 1999-09-02 | 2001-03-07 | CCI Kabushiki Kaisha | Low phosphorus coolant composition |
JP2003213465A (ja) * | 2002-01-16 | 2003-07-30 | Toyota Motor Corp | 自動車用冷却水の再生方法及び再生用添加剤 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7645331B2 (en) * | 2005-10-25 | 2010-01-12 | Honeywell International Inc. | Heat transfer fluid compositions for cooling systems containing magnesium or magnesium alloys |
US7744775B2 (en) | 2005-10-25 | 2010-06-29 | Honeywell International Inc. | Heat transfer fluid compositions for cooling systems containing magnesium or magnesium alloys |
Also Published As
Publication number | Publication date |
---|---|
JPWO2005037950A1 (ja) | 2006-12-28 |
AU2003296104A1 (en) | 2005-05-05 |
EP1681332A4 (en) | 2009-12-16 |
EP1681332B1 (en) | 2018-08-08 |
CN1860199B (zh) | 2010-06-09 |
CN1860199A (zh) | 2006-11-08 |
EP1681332A1 (en) | 2006-07-19 |
US20060237686A1 (en) | 2006-10-26 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
AU2002256500B2 (en) | Monocarboxylic acid based antifreeze composition | |
US7258814B2 (en) | Coolant composition and methods of use thereof | |
US4851145A (en) | Corrosion-inhibited antifreeze/coolant composition | |
JP2862007B2 (ja) | 腐食抑制不凍液組成物 | |
AU2002256500A1 (en) | Monocarboxylic acid based antifreeze composition | |
US20060237686A1 (en) | Coolant composition | |
JP3941030B2 (ja) | 低リン系冷却液組成物 | |
EP1029017A1 (en) | Silicate free antifreeze composition | |
WO2005052086A1 (ja) | 冷却液組成物 | |
EP1159372B1 (en) | Monocarboxylic acid based antifreeze composition for diesel engines | |
WO2000050532A1 (en) | Monocarboxylic acid based antifreeze composition for diesel engines | |
US6290870B1 (en) | Monocarboxylic acid based antifreeze composition for diesel engines | |
JP2011074181A (ja) | 冷却液組成物 | |
JP4616536B2 (ja) | 不凍液/冷却液組成物 | |
WO2005037951A1 (ja) | 冷却液組成物 | |
JP2005187905A (ja) | 冷却液組成物 | |
WO2005054396A1 (ja) | 冷却液組成物 | |
JP2005187748A (ja) | 冷却液組成物 | |
JP2004300512A (ja) | 冷却液組成物 | |
WO2005054397A1 (ja) | 冷却液組成物 | |
WO2000060020A1 (fr) | Inhibiteurs de noircissement et compositions de fluides antigel/fluides de refroidissement utilisant lesdits inhibiteurs | |
WO2005063917A1 (ja) | 冷却液組成物 | |
JPH08113771A (ja) | 不凍液組成物 | |
JPWO2005054398A1 (ja) | 冷却液組成物 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200380110552.8 Country of ref document: CN |
|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2005509619 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 11403739 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2003786296 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 2003786296 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 11403739 Country of ref document: US |