CA2422012A1 - Non-aqueous heat transfer fluid and use thereof - Google Patents

Non-aqueous heat transfer fluid and use thereof Download PDF

Info

Publication number
CA2422012A1
CA2422012A1 CA002422012A CA2422012A CA2422012A1 CA 2422012 A1 CA2422012 A1 CA 2422012A1 CA 002422012 A CA002422012 A CA 002422012A CA 2422012 A CA2422012 A CA 2422012A CA 2422012 A1 CA2422012 A1 CA 2422012A1
Authority
CA
Canada
Prior art keywords
heat transfer
transfer fluid
percent
weight
total weight
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.)
Granted
Application number
CA002422012A
Other languages
French (fr)
Other versions
CA2422012C (en
Inventor
John W. Evans
J. Thomas Light
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Evans Cooling Systems Inc
Original Assignee
Evans Cooling Systems, Inc.
John W. Evans
J. Thomas Light
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Evans Cooling Systems, Inc., John W. Evans, J. Thomas Light filed Critical Evans Cooling Systems, Inc.
Publication of CA2422012A1 publication Critical patent/CA2422012A1/en
Application granted granted Critical
Publication of CA2422012C publication Critical patent/CA2422012C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • 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
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Lubricants (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

A non-aqueous, reduced toxicity diol based heat transfer fluid is provided comprised of at least one diol that acts as an antidote for ethylene glycol poisoning, such as for example propylene glycol. The heat transfer fluid may also include corrosion inhibitors that are soluble in the diols used for the heat transfer fluid. The heat transfer fluid may be used as a coolant in internal combustion engines such as automobile engines.

Claims (29)

1. A diol based heat transfer fluid for use in a heat exchange system, said heat transfer fluid comprising:
(a) a first diol consisting of ethylene glycol;
(b) at least one second diol, wherein the second diol acts as an antidote for ethylene glycol poisoning when it is mixed with ethylene glycol, and wherein the second diol has a boiling point above approximately 150°C; and (c) at least one corrosion inhibitor additive that is soluble in the first and second diols.
2. The heat transfer fluid of claim 1, wherein the corrosion inhibitor additive is selected from the group consisting of a molybdate salt, a nitrate salt and an azole.
3. The heat transfer fluid of claim 1, wherein the diols comprise from about percent by weight to about 99.85 percent by weight of the heat transfer fluid.
4. The heat transfer fluid of claim 1, wherein the second diol is propylene glycol.
5. The heat transfer fluid of claim 1, wherein propylene glycol comprises from about 30 percent by weight to about 100 percent by weight of the total weight of the diols, and ethylene glycol comprises from about 0 percent by weight to about 70 percent by total weight of the total weight of the diols.
6. The heat transfer fluid of claim 1, wherein the corrosion inhibitor is comprised of a molybdate salt in a concentration of between about 0.05 percent to about 5 percent by weight of the total weight of the heat transfer fluid.
7. The heat transfer fluid of claim 1, wherein the corrosion inhibitor is comprised of a nitrate salt in a concentration of between about 0.05 percent to about 5 percent by weight of the total weight of the heat transfer fluid.
8. The heat transfer fluid of claim 1, wherein the corrosion inhibitor is comprised of an azole in a concentration of between about 0.05 percent to about 5 percent by weight of the total weight of the heat transfer fluid.
9. The heat transfer fluid of claim 6, wherein the molybdate salt is sodium molybdate.
10. The heat transfer fluid of claim 7, wherein the nitrate salt is sodium nitrate.
11. The heat transfer fluid of claim 8, wherein the azole is tolyltriazole.
12. The heat transfer fluid of claim 1, wherein the corrosion inhibitor is comprised of at least one of (i) sodium molybdate in a concentration between about 0.05 percent by weight to about 5 percent by weight of the total weight of the heat transfer fluid, (ii) sodium nitrate in a concentration between about 0.05 percent by weight to about 5 percent by weight of the total weight of the heat transfer fluid, and (iii) tolyltriazole in a concentration between about 0.05 percent by weight to about 5 percent by weight of the total weight of the heat transfer fluid.
13. The heat transfer fluid of claim 1, wherein (a) ethylene glycol comprises about 70 percent by weight of the total weight of diols in the heat transfer fluid;
(b) propylene glycol comprises about 30 percent by weight of the total weight of diols in the heat transfer fluid;
(c) sodium molybdate comprises about 0.5 percent by weight of the total weight of the heat transfer fluid;
(d) sodium nitrate comprises about 0.5 percent by weight of the total weight of the heat transfer fluid; and (e) tolyltriazole comprises about 0.5 percent by weight of the total weight of the heat transfer fluid.
14. A diol based heat transfer fluid for use in a heat exchange system comprising at least one diol having a boiling point above approximately 150°C, and means for providing an antidote for ethylene glycol poisoning when it is mixed with ethylene glycol.
15. The heat transfer fluid of claim 14, wherein the antidote to ethylene glycol poisoning is propylene glycol.
16. The heat transfer fluid of claim 14, further comprising at least one corrosion inhibitor additive that is soluble in the diols in the heat transfer fluid.
17. The heat transfer fluid of claim 16, wherein the corrosion inhibitor additive is selected from the group consisting of a molybdate salt, a nitrate salt and an azole.
18. The heat transfer fluid of claim 16, wherein the diols comprise from about percent by weight to about 99.85 percent by weight of the heat transfer fluid.
19. The heat transfer fluid of claim 16, wherein the corrosion inhibitor is comprised of a molybdate salt in a concentration of between about 0.05 percent to about 5 percent by weight of the total weight of the heat transfer fluid.
20. The heat transfer fluid of claim 16, wherein the corrosion inhibitor is comprised of a nitrate salt in a concentration of between about 0.05 percent to about 5 percent by weight of the total weight of the heat transfer fluid.
21. The heat transfer fluid of claim 16, wherein the corrosion inhibitor is comprised of an azole in a concentration of between about 0.05 percent to about 5 percent by weight of the total weight of the heat transfer fluid.
22. The heat transfer fluid of claim 19, wherein the molybdate salt is sodium molybdate.
23. The heat transfer fluid of claim 20, wherein the nitrate salt is sodium nitrate.
24. The heat transfer fluid of claim 21, wherein the azole is tolyltriazole.
25. The heat transfer fluid of claim 16, wherein the corrosion inhibitor is comprised of at least one of sodium molybdate in a concentration between about 0.05 percent by weight to about 5 percent by weight of the total weight of the heat transfer fluid, sodium nitrate in a concentration between about 0.05 percent by weight to about 5 percent by weight of the total weight of the heat transfer fluid, or tolyltriazole in a concentration between about 0.05 percent by weight to about 5 percent by weight of the total weight of the heat transfer fluid.
26. The heat transfer fluid of claim 14, wherein at least one diol is ethylene glycol.
27. A method for rendering an ethylene glycol based heat transfer fluid non-toxic comprising the steps of:
(a) providing an ethylene glycol based heat transfer fluid; and (b) adding a sufficient amount of a diol that acts as an antidote for ethylene glycol poisoning to render the heat transfer fluid non-toxic.
28. The method of claim 27, wherein the diol that acts as an antidote for ethylene glycol poisoning comprises at least 30 percent by weight of the heat transfer fluid.
29. The method of claim 28, wherein the diol that acts as an antidote for ethylene glycol is propylene glycol.
CA2422012A 2000-07-19 2001-07-19 Non-aqueous heat transfer fluid and use thereof Expired - Fee Related CA2422012C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US21918900P 2000-07-19 2000-07-19
US60/219,189 2000-07-19
PCT/US2001/022859 WO2002006420A1 (en) 2000-07-19 2001-07-19 Non-aqueous heat transfer fluid and use thereof

Publications (2)

Publication Number Publication Date
CA2422012A1 true CA2422012A1 (en) 2002-01-24
CA2422012C CA2422012C (en) 2012-12-11

Family

ID=22818245

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2422012A Expired - Fee Related CA2422012C (en) 2000-07-19 2001-07-19 Non-aqueous heat transfer fluid and use thereof

Country Status (10)

Country Link
US (3) US20030136809A1 (en)
EP (1) EP1320575B1 (en)
JP (1) JP2004513982A (en)
KR (1) KR100506549B1 (en)
CN (2) CN1511187A (en)
AU (2) AU8064501A (en)
BR (1) BRPI0112642B1 (en)
CA (1) CA2422012C (en)
MX (1) MX246518B (en)
WO (1) WO2002006420A1 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1303573A4 (en) * 2000-06-10 2007-11-28 Evans Cooling Systems Inc Non-toxic ethylene glycol-based antifreeze/heat transfer fluid concentrate and antifreeze/heat transfer fluid
US20020033470A1 (en) * 2000-07-19 2002-03-21 Evans John W. Non-aqueous heat transfer fluid and use thereof
US20090266519A1 (en) * 2004-09-08 2009-10-29 Honeywell International Inc. Heat transfer system, fluid, and method
US8658326B2 (en) 2004-09-08 2014-02-25 Prestone Products Corporation Heat transfer system, fluid, and method
CN102401066A (en) * 2011-08-30 2012-04-04 芜湖禾田汽车工业有限公司 Damping fluid for hydraulic suspension part of automobile engine and production process thereof
CN102374253A (en) * 2011-09-02 2012-03-14 芜湖禾田汽车工业有限公司 Damping fluid of hydraulic suspension product of automobile engine
US8862414B2 (en) * 2011-09-21 2014-10-14 Tesla Motors, Inc. Detection of high voltage electrolysis of coolant in a battery pack
US20130073234A1 (en) * 2011-09-21 2013-03-21 Tesla Motors, Inc. Response to Low Voltage Electrolysis in a Battery Pack
US9966590B2 (en) 2011-09-21 2018-05-08 Tesla, Inc. Response to high voltage electrolysis of coolant in a battery pack
CN102367379B (en) * 2011-11-02 2014-04-30 深圳车仆汽车用品发展有限公司 Life-cycle water-free cooling solution
WO2013126895A1 (en) * 2012-02-23 2013-08-29 Hydration Systems, Llc Forward osmosis with an organic osmolyte for cooling towers
EP3292098B1 (en) * 2015-05-07 2021-07-21 Evans Cooling Systems, Inc. Method for cooling an internal combustion engine using a very low water heat transfer fluid with reduced low temperature viscosity
CN104845595B (en) * 2015-05-13 2018-01-23 北京中德汇诚石油技术有限公司 A kind of automobile engine water-free cooling composition
GB201610403D0 (en) 2016-06-15 2016-07-27 Liquitherm Tech Group Ltd Cooling system treatment
CN108130055A (en) * 2017-12-27 2018-06-08 佛山市顺德区施迈普电子科技有限公司 A kind of Pluronic polyols water-free cooling and preparation method thereof
CN114574173B (en) * 2020-11-30 2024-03-19 中国石油化工股份有限公司 Cooling liquid and preparation method and application thereof

Family Cites Families (56)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2102825A (en) * 1935-03-06 1937-12-21 Du Pont Hydraulic fluids
US3935116A (en) * 1972-02-28 1976-01-27 Mcdonnell Douglas Corporation Functional fluid compositions
CA1031556A (en) * 1973-07-19 1978-05-23 The Dow Chemical Company Method for reducing the strength of ice
AT344929B (en) * 1975-11-24 1978-08-25 Voest Ag PLATE COLLAR FOR CONTINUOUS STEEL SLABS
JPS54155985A (en) 1978-05-31 1979-12-08 Daihatsu Motor Co Ltd Antiifreezing composition for water mixed in fuel tank
US4209416A (en) * 1979-01-02 1980-06-24 Basf Wyandotte Corporation Antifreeze containing amino silanes, amino siloxanes and a hydroxybenzoic acid
US4293441A (en) * 1979-03-12 1981-10-06 Minnesota Mining And Manufacturing Company Corrosion inhibiting heat transfer liquid
JPS55125181A (en) 1979-03-22 1980-09-26 Wako Pure Chem Ind Ltd Antifreezing agent
JPS57163747A (en) * 1981-03-31 1982-10-08 Tokai Rubber Ind Ltd Anti-oscillation supporter for automobile engine
US4382870A (en) * 1981-07-06 1983-05-10 Northern Petrochemical Company Antifreeze corrosion inhibitor composition for aluminum engines
US4455248A (en) * 1982-06-01 1984-06-19 Shell Oil Company Antifreeze compositions
US4452715A (en) * 1982-10-25 1984-06-05 Basf Wyandotte Corporation High pH coolant containing carbonate ion
AU566181B2 (en) * 1982-11-18 1987-10-08 John W. Evans Boiling liquid cooling system for internal combustion engines
US4545925A (en) * 1984-05-07 1985-10-08 Norchem, Inc. Corrosion inhibited freeze protected heat transfer fluid
US4550694A (en) * 1984-05-11 1985-11-05 Evans Cooling Associates Process and apparatus for cooling internal combustion engines
US4561990A (en) * 1984-10-04 1985-12-31 Texaco Inc. High lead solder corrosion inhibitors
US4717495A (en) * 1984-11-30 1988-01-05 Fleetguard, Inc. Diesel engine cooling system compositions
FR2579613B1 (en) * 1985-03-26 1987-05-15 Bp Chimie Sa APPLICATION OF A NON-AQUEOUS FLUID BASED ON ALCOYLENEGLYCOL MONOETHER AS A HEAT TRANSFER
US4758367A (en) * 1986-05-22 1988-07-19 Union Carbide Corporation Triethylene glycol-based heat transfer fluids
US4743393A (en) * 1986-06-06 1988-05-10 Basf Corporation Antifreeze concentrates and coolants containing heteropolymolybdate compounds
US4851145A (en) * 1986-06-30 1989-07-25 S.A. Texaco Petroleum Nv Corrosion-inhibited antifreeze/coolant composition
US4698172A (en) * 1986-08-04 1987-10-06 Fmc Corporation Aircraft anti-icing fluid containing carrageenan
US4978469A (en) * 1987-05-15 1990-12-18 Ecolab Inc. Cleaning composition suitable for the cleaning of sub-freezing surfaces
US4759864A (en) * 1987-09-04 1988-07-26 Texaco Inc. & S.A. Texaco Petro, N.V. Corrosion-inhibited antifreeze formulation
AU3533289A (en) * 1988-04-15 1989-11-03 Dow Chemical Company, The Inhibited alkylene glycol coolant and cooling process
US4946616A (en) * 1988-11-14 1990-08-07 The Dow Chemical Company Heat transfer fluids containing dicarboxylic acid mixtures as corrosion inhibitors
JPH0331388A (en) 1989-06-27 1991-02-12 Nippon Oil Co Ltd Freezing-preventive composition
US5000866A (en) * 1990-03-26 1991-03-19 First Brands Corporation Antifreeze compositions containing alkane tetracarboxylic acid for use with hard water
US5085791A (en) * 1990-10-01 1992-02-04 Texaco Chemical Company Corrosion-inhibited antifreeze/coolant composition containing cyclohexane acid(s)
US5085793A (en) * 1990-11-19 1992-02-04 Texaco Chemical Company Corrosion-inhibited antifreeze/coolant composition
US5422026A (en) * 1990-12-14 1995-06-06 Arco Chemical Technology, L.P. Phosphate-free antifreeze formulation
US5118434A (en) * 1991-02-26 1992-06-02 The Dow Chemical Company Deicing fluids
US5240631A (en) * 1991-11-13 1993-08-31 Arco Chemical Technology, L.P. Antifreeze formulation containing phosphorous acid
FR2686346B1 (en) 1992-01-21 1994-09-30 Bp Chemicals Snc ANTIFREEZE AND AQUEOUS FLUID COMPOSITION.
FR2686270B1 (en) 1992-01-21 1994-03-18 Elf Atochem Sa DEVICE FOR REDUCING THE DRIVING OF VESICLES IN A HYDROGEN STREAM.
FR2686616A1 (en) 1992-01-29 1993-07-30 Exxon France ALCOHOLIC FORMULATION ANTI-FROZEN AND ANTI-BLUE.
DE69220209T2 (en) * 1992-04-06 1997-10-02 Texaco Services Europ Ltd Anticorrosive antifreeze
US5461100A (en) * 1992-05-29 1995-10-24 Union Carbide Chemicals & Plastics Technology Corporation Aircraft anti-icing fluids
JP3119943B2 (en) 1992-07-01 2000-12-25 プレストーン、プロダクツ、コーポレーション Method for preventing re-corrosion of circulating antifreeze / coolant and re-corrosion inhibitor
US5273673A (en) 1992-08-31 1993-12-28 Texaco Chemical Company Anti-icing compositions having alkylphenol ethoxylate nonionic surfactant and alkylaryl sulfonate hydrotrope
CA2106804A1 (en) * 1992-09-24 1994-03-25 James A. Lott Antifreeze compositions and uses
US5385688A (en) * 1993-01-08 1995-01-31 American Polywater Corporation Antifreeze gel composition for use in a cable conduit
US8137579B2 (en) * 1993-09-10 2012-03-20 Evans John W Non-aqueous heat transfer fluid and use thereof
ES2173926T3 (en) * 1993-09-10 2002-11-01 Evans Cooling Systems Inc NON-WATERING FLUID HEAT TRANSFER.
JPH0885782A (en) 1994-09-16 1996-04-02 Nippon Chem Kogyo Kk Antifreeze composition
JP3028182B2 (en) * 1994-10-13 2000-04-04 シーシーアイ株式会社 Coolant composition
JPH08183950A (en) 1994-11-04 1996-07-16 Tokyo Fine Chem Kk Cooling liquid composition
AU5876496A (en) * 1995-05-24 1996-12-11 Evans Cooling Systems, Inc. Non-aqueous heat transfer fluid and use thereof
US5651916A (en) * 1995-08-23 1997-07-29 Prestone Products Corporation Process for the preparation of a propylene glycol antifreeze containing an alkali metal silicate
US5817252A (en) * 1997-04-16 1998-10-06 Octagon Process Inc. Deicing and anti-icing composition for aircraft
US6143243A (en) * 1997-12-29 2000-11-07 Prestone Products Corporation Method of inhibiting cavitation-erosion corrosion of aluminum surfaces using carboxylic acid based compositions comprising polymerizable-acid graft polymers
US5997763A (en) * 1998-04-27 1999-12-07 Shell Oil Company Corrosion inhibiting antifreeze compositions containing various carboxylic acids
US6228283B1 (en) * 1998-05-22 2001-05-08 Ashland Inc. Aqueous corrosion inhibitor
EP1303573A4 (en) * 2000-06-10 2007-11-28 Evans Cooling Systems Inc Non-toxic ethylene glycol-based antifreeze/heat transfer fluid concentrate and antifreeze/heat transfer fluid
US20020033470A1 (en) * 2000-07-19 2002-03-21 Evans John W. Non-aqueous heat transfer fluid and use thereof
US20020171063A1 (en) * 2001-03-10 2002-11-21 Evans John W. Reduced toxicity ethylene glycol-based antifreeze/heat transfer fluid concentrates and antifreeze/heat transfer fluids

Also Published As

Publication number Publication date
JP2004513982A (en) 2004-05-13
US20100176334A1 (en) 2010-07-15
CN1511187A (en) 2004-07-07
MX246518B (en) 2007-06-18
AU8064501A (en) 2002-01-30
BRPI0112642B1 (en) 2016-02-10
EP1320575B1 (en) 2013-09-04
CA2422012C (en) 2012-12-11
AU2001280645B2 (en) 2005-10-20
EP1320575A1 (en) 2003-06-25
US20030136809A1 (en) 2003-07-24
US20080061269A1 (en) 2008-03-13
MXPA03000538A (en) 2004-04-21
KR20030097775A (en) 2003-12-31
EP1320575A4 (en) 2009-08-26
CN102061147A (en) 2011-05-18
BR0112642A (en) 2004-06-22
WO2002006420A1 (en) 2002-01-24
KR100506549B1 (en) 2005-08-05
US7655154B2 (en) 2010-02-02

Similar Documents

Publication Publication Date Title
CA2422012A1 (en) Non-aqueous heat transfer fluid and use thereof
US20060033077A1 (en) Engine antifreeze composition
WO2002055759A2 (en) A chemical base for engine coolant / antifreeze with improved thermal stability properties
JPH06116764A (en) Antifreeze composition
ZA200502912B (en) Method for cooling high temperature engines
CA2421813A1 (en) Non-toxic ethylene glycol-based antifreeze/heat transfer fluid concentrate and antifreeze/heat transfer fluid
EP1598407A2 (en) Coolant composition
US5422026A (en) Phosphate-free antifreeze formulation
KR101021207B1 (en) Coolant based on azole derivatives containing 1,3-propanediol for fuel cell cooling systems
EP1029017B1 (en) Monocarboxylic acid based antifreeze composition
US5711894A (en) Antifreeze concentrate including alkoxybenzoic acid
JPH0885782A (en) Antifreeze composition
ES2833288T3 (en) Coolant composition for extended operation engines
US6235217B1 (en) Monocarboxylic acid based antifreeze composition
US2803603A (en) Heat exchange compositions
KR930002766B1 (en) Inhibited alkylene glycol coolant and cooling process
EP1170347B1 (en) Hybrid supplemental coolant additive
WO2005054400A1 (en) Antifreezing fluids
US3553137A (en) Corrosion inhibitor for methoxypropanol
CN101949015B (en) Protective agent for water-cooled engine cooling system
GB2036062A (en) Antifreeze agents
JPH08269751A (en) Composition for antifreezing fluid
JP2700455B2 (en) Antifreeze composition
JPH1046134A (en) Antifreeze composition
IE49106B1 (en) Antifreeze agents

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20170719