CN106118821A - A kind of alcohol ether boric acid ester type DOT 4 braking fluid - Google Patents

A kind of alcohol ether boric acid ester type DOT 4 braking fluid Download PDF

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Publication number
CN106118821A
CN106118821A CN201610474870.1A CN201610474870A CN106118821A CN 106118821 A CN106118821 A CN 106118821A CN 201610474870 A CN201610474870 A CN 201610474870A CN 106118821 A CN106118821 A CN 106118821A
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ether
boric acid
many
acid ester
borate
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CN106118821B (en
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刘博�
刘金龙
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Liaoning Daobo Fine Chemicals Production Co Ltd
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Liaoning Daobo Fine Chemicals Production Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
    • C10M169/04—Mixtures of base-materials and additives
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
    • C10M105/78—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing boron
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/04—Elements
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/08—Inorganic acids or salts thereof
    • C10M2201/082—Inorganic acids or salts thereof containing nitrogen
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/08—Inorganic acids or salts thereof
    • C10M2201/082—Inorganic acids or salts thereof containing nitrogen
    • C10M2201/083—Inorganic acids or salts thereof containing nitrogen nitrites
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/02—Hydroxy compounds
    • C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
    • C10M2207/024—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings having at least two phenol groups but no condensed ring
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/04—Ethers; Acetals; Ortho-esters; Ortho-carbonates
    • C10M2207/046—Hydroxy ethers
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
    • C10M2207/126—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids monocarboxylic
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/40—Fatty vegetable or animal oils
    • C10M2207/402—Castor oils
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M2215/04—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2215/042—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms containing hydroxy groups; Alkoxylated derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/22—Heterocyclic nitrogen compounds
    • C10M2215/223—Five-membered rings containing nitrogen and carbon only
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2227/00—Organic non-macromolecular compounds containing atoms of elements not provided for in groups C10M2203/00, C10M2207/00, C10M2211/00, C10M2215/00, C10M2219/00 or C10M2223/00 as ingredients in lubricant compositions
    • C10M2227/06—Organic compounds derived from inorganic acids or metal salts
    • C10M2227/061—Esters derived from boron
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/12—Inhibition of corrosion, e.g. anti-rust agents or anti-corrosives
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/08—Hydraulic fluids, e.g. brake-fluids

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Lubricants (AREA)

Abstract

A kind of alcohol ether borate-type DOT4 motor vehicle brake fluid, includes following components by percentage to the quality: many glycol monoethyl ethers borate 10 30%, many ethylene glycol monoalkyl ethers 10 40%, many ethylene glycol 20 40%, antioxidant 0 0.5%, corrosion inhibiter 0 2%, pH value regulator 0% 2%.The present invention solves tradition borate type braking fluid poor stability, easily separates out precipitation, the problem causing the function reduction such as antirust, the corrosion protection of brake fluid, anti-vapour lock.The present invention achieves that anti-gas barrier low temperature flow is good, Heat stability is good by force, does not separate out precipitation, good to rubber swelling, the advantage such as antirust, corrosion protection, antioxidation.

Description

A kind of alcohol ether boric acid ester type DOT 4 braking fluid
Technical field
The present invention relates to a kind of motor vehicle brake fluid, especially relate to a kind of alcohol ether boric acid ester type DOT 4 braking fluid.
Background technology
Since automobile comes out, use the automobile of hydraulic braking, it is necessary to use motor vehicle brake fluid, along with automotive performance Lifting, motor vehicle brake fluid performance and prescription are constantly improved, in order to meet the requirement of automobile brake, it is ensured that driving peace Entirely.Brake fluid in early days is alcohol, caster oil type, and mineral oil origin etc., because the brake fluid of these types can not meet motor vehicle brake fluid Requirement, is eliminated.The brake fluid of Hyundai Motor, is widely used synthesis alcohol ether, borate type braking fluid and the braking of silane oil type Liquid.Silane oil type brake fluid has anti-gas barrier good, low water absorbable advantage, but manufacturing cost is high, only uses in little scope.Mesh Widely used brake fluid on front market, mainly meets the United States Federal's safety criterion FMVSSNO116 and China GB12981- The motor vehicle brake fluid of 2012 standards.Motor vehicle brake fluid is safety member on automobile, selects defective or low-grade brake fluid, potential The hidden danger of brake failure.
At the borate type braking fluid of research, United States Patent (USP) US 3625899,3972822, GB 1214171 discloses and contains There is the brake fluid of borate, but there is the problem that precipitation precipitates, low temperature movement viscosity is big, less to rubber swelling.
DOT4 borate type braking fluid on borate type braking fluid disclosed in above patent and market, all exist with Lower problem: easily separate out precipitation in using and storing, easily to produce burn into excessive or too small etc. to rubber swelling.
The invention solves the problems that the problems referred to above that borate-type DOT4 brake fluid exists, prepare and meet GB 12981-2012 And the requirement quality product of DOT4.
Summary of the invention
The invention aims to solve the problems referred to above of borate type braking fluid mentioned above, it is provided that a kind of stable Borate DOT4 brake fluid, this alcohol ether borate type braking fluid has more excellent anti-gas barrier and low temperature flow, anticorrosive Property, rust-preventing characteristic, non-oxidizability, particularly stability.The PH regulator amine polyethers especially added in formula, stabilizes brake fluid PH value, prevent Oxidation and the acidic materials that produce, the most effectively stop brake fluid mesoboric acid ester to decomposite boric acid etc. simultaneously Precipitate.
To achieve these goals, present inventors studied a kind of alcohol ether boric acid ester type DOT 4 braking fluid, with weight percent Than meter, including following components:
Many glycol monoethyl ethers borate 10～30%,
Many ethylene glycol monoalkyl ethers 10～40%,
Many ethylene glycol 20～40%,
Antioxidant 0～0.5%, preferably 0.2%～0.5%,
PH value regulator 0～2%, preferably 0.5%～2%
Corrosion inhibiter 0-2%, preferably 0.1%～2%
Described many glycol monoethyl ethers borate molecular formula is [CH3O(CH2CH2O)n]3-B (n=4.5).The preparation present invention Borate, raw material used is mixed alcohol ether, and the most glycol monoethyl ethers include TEG monomethyl ether, triethylene glycol list first Ether, five ethylene glycol monomethyl ether, six glycol monoethyl ethers, the dry equilibrium reflux boiling point of the many glycol monoethyl ethers used by the present invention is 278℃。
The preparation method of described many glycol monoethyl ethers borate is preferably: be 12: 1 number-average molecular weights 230 by mass ratio Many glycol monoethyl ethers and boric acid add in reactor, at a temperature of 80-150 DEG C, under 0.07-0.098Mpa negative pressure, stir Mixing, dehydration, the response time is 1-24 hour, weighs the quality generating water, when the quality of water reaches calculated value, and reaction knot Bundle.
More preferably with heating, cooling, agitating function rustless steel esterifying kettle in, add many ethylene glycol list of metering Methyl ether, stirring, heats up, is simultaneously introduced the boric acid of metering, at 60 DEG C～80 DEG C, stirs 30 minutes, open vacuum pump, 80 DEG C--at the temperature of 160 DEG C and the negative pressure of 0.06Mpa～0.098Mpa, esterification, dehydration 4 hours, it is cooled to less than 80 DEG C, Emptying, stops vacuum pump, sample examination.The dry equilibrium reflux boiling point of borate is more than 310 DEG C, and water content is less than 0.05%, takes off When the water yield reaches calculated value, reaction completes.Many glycol monoethyl ethers are 12: 1 with the mass ratio of boric acid.
The borate that reaction generates, dry equilibrium reflux boiling point is more than 310 DEG C, by Karl_Fischer method, measures in borate Water content is less than 0.05%, and esterification is completely (100%).
The borate products the most not boronic acid containing that reaction generates, not half borate of hydroxyl.
Described many ethylene glycol monoalkyl ethers molecular formula is RO (CH2CH2O)nH, wherein, n is the integer of more than 2, preferably n= 2,3,4,5 or 6, R are the alkyl of 1 to 6 carbon atom, preferably CH3、CH3CH2、CH3CHCH3、CH3CH2CH2CH2。
Described many ethylene glycol monoalkyl ethers, preferably include diethylene glycol list first (or second, fourth) ether, triethylene glycol first (or second, Isopropyl, normal-butyl) ether etc..
Described many ethylene glycol, preferably diethylene glycol, triethylene glycol, TEG, Polyethylene Glycol more than one, wherein The number-average molecular weight of Polyethylene Glycol is preferably 185,200,300.
Described pH value regulator be preferably triethanolamine, methyl diethanolamine, ethyldiethanolamine, butyl diethanolamine, Methoxypropyl amine ether, butyl amidogen ether at least one.
Described antioxidant be preferably bisphenol-A, T501 type antioxidant at least one.
Described metal inhibitor is TTA, benzotriazole, oleic acid, Oleum Ricini, Borax, sodium nitrate, Asia At least one of sodium nitrate.
The preparation method of described many ethylene glycol monomethyl ether borate is: by many glycol monoethyl ethers borate, many ethylene glycol alkane Base ether, many ethylene glycol add in still, stir, at 50 DEG C-80 DEG C, are separately added into antioxidant, corrosion inhibiter, pH value regulator. Stir 30 minutes after all dissolving, be filtrated to get finished product DOT4 brake fluid.
Beneficial effects of the present invention:
Brake fluid adds low concentration, many glycol monoethyl ethers borate of high equilibrium reflux boiling point, system can be effectively improved The anti-vapour lock performance of hydrodynamic, the multiethylene-glycol of addition improves the greasy property of brake fluid, and many ethylene glycol alkyl ether of addition improve The brake fluid dilatancy to rubber cup, the additive of addition guarantees the rustless property of brake fluid and prevents from separating out the merit of precipitation Can, it is also possible to extend brake fluid and use the time.The present invention uses brake fluid prepared by the borate of low concentration, effectively reduces system The production cost of hydrodynamic, it is simple to industrialized production, product quality meets GB12981-2012 and the United States Federal FMVSS NO.116 Prescription.
Detailed description of the invention
Below by specific embodiment, the present invention is specifically described.
Embodiment 1
At 1.2m3In mediation still, the mass ratio adding raw material is as follows:
Many glycol monoethyl ethers borate 200 kilograms, many ethylene glycol monobutyl ethers (number-average molecular weight is 258.8) 100 kilograms, Many glycol monoethyl ethers (number-average molecular weight is 230) 85 kilograms, diethylene glycol 300 kilograms, glycol monoethyl ether more than three 250 kilograms, Diethylene glycol monobutyl ether 50 kilograms, TTA 1 kilogram, bisphenol-A 4 kilograms, triethanolamine 10 kilograms.
Preparing process: under agitation, at a temperature of 50 DEG C, is sequentially added into above-mentioned raw materials, after all dissolving, filters to becoming Product tank, obtains finished product.
Embodiment 2:
At 1.2m3The still interior addition raw material mass mixture ratio that is in harmonious proportion is as follows:
Many ethylene glycol list first borate 200 kilograms, many ethylene glycol monobutyl ethers (number-average molecular weight is 258.8) 200 kilograms, three Glycol 100 kilograms, diethylene glycol 200 kilograms, triethylene glycol list diisopropyl ether 100 kilograms, triethylene glycol monomethyl ether 130 kilograms, diethyl Glycol monomethyl ether 50 kilograms, T501 4 kilograms, benzotriazole 1 kilogram, 15 kilograms of butylamine ether.
Preparing process: under agitation, at a temperature of 65 DEG C, is sequentially added into above-mentioned raw materials, after all dissolving, filters to becoming Product tank, obtains finished product.
Embodiment 3:
At 1.2m3The still interior addition raw material mass mixture ratio that is in harmonious proportion is as follows:
Many ethylene glycol list first borate 200 kilograms, many ethylene glycol monobutyl ethers (number-average molecular weight is 258.8) 200 kilograms, poly- Ethylene glycol (number-average molecular weight is 188) 100 kilograms, diethylene glycol 200 kilograms, triethylene glycol monomethyl ether 230 kilograms, diethylene glycol list Ether 50 kilograms, bisphenol-A 4 kilograms, 15 kilograms of methoxypropyl amine ether, TTA 1 kilogram.
Preparing process: under agitation, at a temperature of 80 DEG C, is sequentially added into above-mentioned raw materials, after all dissolving, filters to becoming Product tank, is finished product.
Comparative example 1
Reference patent US 3625899, GB 1214171, by mass percentage: triethylene glycol monomethyl ether borate is 67.39%, triethylene glycol monomethyl ether is 23.20%, and Polyethylene Glycol P-300 is 7.62%, and diethanolamine is 1.78%, nitrous acid Sodium is 0.01%.
Comparative example 2
With reference to US 3972822, by mass percentage: triethylene glycol monomethyl ether borate is 18%, triethylene glycol monomethyl ether Being 48.0%, 2,2'-ethylenedioxybis(ethanol). is 33.5%, and diethanolamine is 0.5%
The brake fluid that the present invention provides, embodiment 1-3 fully meets in the United States Federal's FMVSS NO.116 mass DOT4 etc. The prescription of HZY4 in grade standard and standard GB/T 12981-2012 standard, result is as shown in table 1.
The technical parameter of table 1 alcohol ether boric acid ester type DOT 4 braking fluid
※ is for comparative example 1: remaining after evaporation thing, and room temperature is placed 3 days, separates out precipitation.Relatively big to non-ferrous metal copper corrosion ,-40 DEG C dynamic viscosity does not meets GB12981-2012.
※ is for comparative example 2: rubber bowl test root footpath changing value is 0.13mm, does not meets GB-12981-2012. evaporation test After, room temperature is placed 3 days, generates the most runny dope.Result of the test in table 1 embodiment shows: the alcohol ether boron of the present invention Acid ester type brake fluid, every physical and chemical index is all beyond the prescription of DOT4, HZY4.Especially after evaporation test, do not separate out Precipitate, tests forward and backward pH value and varies less, and demonstrates the borate type braking fluid good stability of the present invention.
The present invention is not meant to be limited to by the description of description embodiment, without departing from design aim and principle thereof On the premise of can be varied from.Above-described embodiment is only one of presently preferred embodiments of the present invention, not limits the present invention with this Practical range, therefore all shapes under this invention, structure, principle done equivalence change, the protection of the present invention all should be covered by Within the scope of.

Claims (10)

1. an alcohol ether boric acid ester type DOT 4 braking fluid compositions, by weight percentage, including following components:
Many glycol monoethyl ethers borate 10-40%, structural formula is [CH3O(CH2CH2O)n]3-B, wherein n=4.5,
Many ethylene glycol monoalkyl ethers 20%-40%, structural formula is RO (CH2CH2O)n-H, wherein R is the alkyl of 1-6 carbon atom, It is preferably CH3、CH3CH2、CH3CHCH3、CH3CH2CH2CH2, n is the integer of more than 2, preferably n=2,3,4 or 5,
Many ethylene glycol 10%-40%, structural formula is HO (CH2CH2O)nH, wherein n is the integer of more than 2, preferably n=2,3 or 4,
PH value regulator 0%--2%, preferably 0.5%-2%,
Antioxidant 0%--0.5%, preferably 0.2%-0.5%,
Corrosion inhibiter 0%--2%, preferably 0.1%-2%.
Alcohol ether boric acid ester type DOT 4 braking fluid compositions the most according to claim 1, described many glycol monoethyl ethers boric acid In ester, many glycol monoethyl ethers include TEG monomethyl ether triethylene glycol monomethyl ether, five ethylene glycol monomethyl ether, six ethylene glycol lists Methyl ether.
Alcohol ether boric acid ester type DOT 4 braking fluid compositions the most according to claim 1, described many ethylene glycol alkyl ether are two Glycol monoethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, triethylene glycol monomethyl ether at least one.
Alcohol ether boric acid ester type DOT 4 braking fluid compositions the most according to claim 1, described many ethylene glycol alkyl ether are number Many ethylene glycol monobutyl ethers, number-average molecular weight that many glycol monoethyl ethers that average molecular weight is 230, number-average molecular weight are 258.8 are At least one of many ethylene glycol monoethyl ethers of 213.2.
Alcohol ether boric acid ester type DOT 4 braking fluid compositions the most according to claim 1, described antioxidant is T501 or double At least one of phenol A type antioxidant.
Alcohol ether boric acid ester type DOT 4 braking fluid compositions the most according to claim 1, described PH regulator be triethanolamine, Methyl diethanolamine, ethyldiethanolamine, butyl amidogen ether, methoxypropyl amine ether, ethoxypropyl ether, methylethoxy propylamine ether are at least A kind of.
Alcohol ether boric acid ester type DOT 4 braking fluid compositions the most according to claim 1, described many glycol monoethyl ethers boric acid The preparation method of ester is as follows: with boric acid, many glycol monoethyl ethers of the weight average molecular weight 230 that mass ratio is 12: 1 are added reaction In device, at a temperature of 80-150 DEG C, under 0.07-0.098Mpa negative pressure, stirring, dehydration, the response time is 1-24 hour, weighs Generating the quality of water, when the quality of water reaches calculated value, reaction terminates.
Alcohol ether boric acid ester type DOT 4 braking fluid compositions the most according to claim 7, the borate that reaction generates, dry balance Boiling point reflux is more than 310 DEG C, and by Karl_Fischer method, in measuring borate, water content is less than 0.05%, and esterification is complete.
Alcohol ether boric acid ester type DOT 4 braking fluid the most according to claim 8 combines, and the borate products that reaction generates does not contains Boric acid, not half borate of hydroxyl.
Alcohol ether boric acid ester type DOT 4 braking fluid component the most according to claim 1, described corrosion inhibiter is: methylbenzene a pair of horses going side by side three Nitrogen azoles, benzotriazole, oleic acid, Oleum Ricini, Borax, sodium nitrate, sodium nitrite at least one.
CN201610474870.1A 2016-06-27 A kind of alcohol ether boric acid ester type DOT 4 braking fluid Active CN106118821B (en)

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Cited By (6)

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CN109321342A (en) * 2018-11-29 2019-02-12 杨红洲 Motor vehicle brake fluid and preparation method thereof
CN109468158A (en) * 2018-11-15 2019-03-15 湖北回天新材料股份有限公司 A kind of HZY4 motor vehicle brake liquid
WO2019107841A1 (en) * 2017-11-30 2019-06-06 극동제연공업 주식회사 Functional fluid composition
WO2019107842A1 (en) * 2017-11-30 2019-06-06 극동제연공업 주식회사 Functional fluid composition
CN111518124A (en) * 2020-06-03 2020-08-11 辽宁大学 Alcohol ether type borate lubricating oil additive and preparation method and application thereof
CN112080332A (en) * 2020-08-13 2020-12-15 浙江嘉富力环保科技有限公司 High-boiling-point high-performance brake fluid composition and preparation method thereof

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JPS6183293A (en) * 1984-10-01 1986-04-26 Toho Chem Ind Co Ltd High-boiling brake fluid
CN101955840A (en) * 2010-08-24 2011-01-26 柳盛春 High boiling point boric acid ester type synthetic brake fluid and preparation method thereof
CN102363735A (en) * 2010-12-14 2012-02-29 深圳车仆汽车用品发展有限公司 Preparation method of alcohol ether boric acid ester type DOT4 braking fluid

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WO2019107842A1 (en) * 2017-11-30 2019-06-06 극동제연공업 주식회사 Functional fluid composition
KR20190064191A (en) * 2017-11-30 2019-06-10 극동제연공업 주식회사 Functional Fluid Compositions
KR20190064192A (en) * 2017-11-30 2019-06-10 극동제연공업 주식회사 Functional Fluid Compositions
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CN109468158A (en) * 2018-11-15 2019-03-15 湖北回天新材料股份有限公司 A kind of HZY4 motor vehicle brake liquid
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CN111518124A (en) * 2020-06-03 2020-08-11 辽宁大学 Alcohol ether type borate lubricating oil additive and preparation method and application thereof
CN112080332A (en) * 2020-08-13 2020-12-15 浙江嘉富力环保科技有限公司 High-boiling-point high-performance brake fluid composition and preparation method thereof

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