CN1035013C - Synthetic brake fluid and preparation thereof - Google Patents

Synthetic brake fluid and preparation thereof Download PDF

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Publication number
CN1035013C
CN1035013C CN93110501A CN93110501A CN1035013C CN 1035013 C CN1035013 C CN 1035013C CN 93110501 A CN93110501 A CN 93110501A CN 93110501 A CN93110501 A CN 93110501A CN 1035013 C CN1035013 C CN 1035013C
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brake fluid
och
weight
synthetic brake
hoch
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CN1074473A (en
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岳江
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Abstract

The present invention relates to synthetic brake fluid and a preparation method thereof, which relates to a manufacturing technique of organic high molecular polyester and polyether and a technique of the field of metal and rubber protection. The present invention uses boric acid ester, diethylene glycol mono-alkyl ether or tripropylene glycol monoalkyl ether, etc. as raw materials, and the raw materials react at certain temperature and pressure for preparing the synthetic brake fluid. Compared with the existing products and techniques, the synthetic brake fluid has the advantages of high dry and wet boiling points, excellent low temperature performance, good compatibility with rubber, low metal corrosion, etc.; the technique has the advantages of simple preparation process, no pollution, high yield, etc.

Description

Synthetic brake fluid and method for making thereof
Synthetic brake fluid (being commonly called as brake solution) and method for making thereof relate to inhibition, anti-oxidant, the anti-aging technology in the anticorrosion of the synthetic manufacturing technology of organic macromolecule polyester, polyethers and metallic substance, elastomeric material and protection field.
Along with the continuous construction of Hyundai Motor industrial expansion and motorway, the high speed of automobile, heavy duty and maximization are also more and more higher to the security requirement of car brakeing, and braking fluid is one of principal element that directly influences car brakeing safety.1930's, the main component of braking fluid is the alcohols mixing solutions or the mineral oil goods of Viscotrol C, and they are because of boiling point low (Viscotrol C--only 78 ℃ of the ethanol braking fluid boiling points that still using as China), easily cause vapour lock; Zero pour height (Viscotrol C is-10 ℃) easily solidifies, viscosity number is too high; Can not guarantee traffic safety to metal, rubber erosion are big etc., just be eliminated the forties in the world, do not begin the fifties to develop, have high do, synthetic brake fluid of new generation that the wet reflux boiling point has low low temperature viscosity again.United States Federal Government transportation division has proposed the standard of DOT-3, DOT-4 and DOT-5 in 1972, its dried/wet reflux boiling point is respectively 205 ℃/140 ℃, 230 ℃/155 ℃ and 260 ℃/180 ℃; Low temperature (40 ℃) viscosity is respectively less than 1500,1800 and 900mm 2/ S.And China is still also using Viscotrol C--the braking fluid of mixed alkoxide solution so far, than falling behind nearly 50 years in the world.
In view of now using Viscotrol C--the shortcoming of alcohol brake fluid, the object of the present invention is to provide a kind of boiling point high and low temperature performance good, with good aging, the swelling of rubber compatibleness better inhibition is arranged to rubber, low to metal protection, production technique is simple, cost is low, yield is high, no exhaust emission, performance surpasses existing Japanese import fully, reach or part index number surpasses that transportation division of the United States Federal formulates, now international DOT-3, the synthetic brake fluid and the method for making thereof of DOT-4 standard.Technical solution of the present invention:
The present invention is with H 3BO 3, HOCH 2CH 2OCH 2CH 2OH or HOCH 2CH 2OCH 2CH 2OCH 2CH 2OH is at 130 ℃ and-5.9 * 10 -3～-6.6 * 10 -3The synthetic boric acid ester is as base oil, its structure: B[OCH under the MPa 2CH 2OCH 2CH 2OH] 3
B[OCH 2CH 2OCH 2CH 2OCH 2CH 2OH] 3
Is solvent with oxyethane with diglycol monotertiary alkyl ether or the tripropylene glycol monoalkyl ethers that the alcohol effect makes, and adds
Figure C9311050100041
(CH 3CH 2CH 2CH 2) 2NH, NaNO 2,
Figure C9311050100042
, (HOCH 2CH 2) 3N about 40 ℃, react under the 0.1MPa this product.Main raw material and various raw material amount ratio row following (Wt%): 1. H 3BO 30.5～1.0% 2. HOCH 2CH 2OCH 2CH 2OH or HOCH 2CH 2OCH 2CH 2OCH 2CH 2OH 26～54% is R-OCH 3. 2CH 2OCH 2CH 2OH or R-O[CH 2CH (CH) 3O] 3H 42～70%
(R is CH 3-, CH 3CH 2-, CH 3CH 2CH 2-, CH 3CH 2CH 2CH 2-) 6. [CH 3(CH 2) 3] 2NH 0.1～1.0% is NaNO 7. 20.5～1.5%
Figure C9311050100044
0.1～1.0% 9. (HOCH 2CH 2) 3It is 7.5～10.5 that N transfers PH
Production sequence of the present invention:
The present invention is will be 1. and 2. add reactor earlier, is heated with stirring to 130 ℃ of insulation reaction after 2 hours, pressurization-0.59 * 10 -3～-6.6 * 10 -3After MPa reacts 20 minutes again, add 3., again at 120 ℃ ,-0.39 * 10 -3MPa reaction 20 minutes, be chilled to about 40 ℃ after, add 4.～8. according to the above ratio again, stir evenly the back, with 9. transfer PH be after 7.5～10.5 finished product.
The present invention and currently available products than, be " round-the-clock " braking fluid, in the south of sweltering heat, can not produce vapour lock; In the north of cold, guarantee that certain fluidity is arranged again.It reaches index and sees Table 1 with the DOT-3 of United States Federal Government transportation division, the DOT-4 that generally acknowledge in the world, the contrast of DOT-5 standard.
Implement:
Get 1. 0.64Kg, 2. 33.4Kg adds reactor, is heated with stirring to 130 ℃ of insulation reaction 2 hours, control pressure is-5.9 * 10 -3～-6.6 * 10 -3MPa sloughs low-boiling-point substance and keeps adding 3. 64.6Kg later in 20 minutes, and stirring evenly the back is-0.39 * 10 at 120 ℃, control pressure -3MPa, kept 20 minutes, treat that temperature is reduced to about 40 ℃ after, add according to the order of sequence 4. 0.05Kg, 5. 0.6Kg, 6. 0.13Kg, 7. 0.5Kg, 8. 0.13Kg stirs the back with 9. transferring PH to 7.5～10.5 to get product.
Table 1

Claims (1)

1, a kind of synthetic brake fluid is characterized in that it makes in accordance with the following methods:
Take by weighing 1. H 3BO 3, 0.5～1.0% (weight), 2. HOCH 2CH 2OCH 2CH 2OH or HOCH 2CH 2OCH 2CH 2OCH 2CH 2OH, 26～54% (weights) add reactor, are heated with stirring to 130 ℃, insulation reaction 2 hours, and control pressure is-5.9 * 10 -3～-6.6 * 10 -3Mpa sloughs low-boiling-point substance and keeps adding later in 20 minutes 3. R-OCH 2CH 2OCH 2CH 2OH or R-O[CH 2CH (CH) 3O] 3H, 42～70% (weights), (R is CH 3-, CH 3CH 2-, CH 3CH 2CH 2-, CH 3CH 2CH 2CH 2-), stirring evenly the back is-3.9 * 10 at 120 ℃, control pressure -3Mpa, 20 minutes detect boiling point, after temperature is reduced to about 40 ℃, add 4. according to the order of sequence 0.05～1.0% (weight), 5. 0.3～1.0% (weight), 6. (CH 3CH 2CH 2CH 2) 2NH, 0.1～1.0% (weight), 7. NaNO 2, 0.5～1.5% (weight), 8. 9. (the HOCH of back 0.1～1.0% (weight) stirs 2CH 2) 3N transfers PH to 7.5～10.5, gets product.
CN93110501A 1993-01-01 1993-01-01 Synthetic brake fluid and preparation thereof Expired - Fee Related CN1035013C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN93110501A CN1035013C (en) 1993-01-01 1993-01-01 Synthetic brake fluid and preparation thereof

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Application Number Priority Date Filing Date Title
CN93110501A CN1035013C (en) 1993-01-01 1993-01-01 Synthetic brake fluid and preparation thereof

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CN1074473A CN1074473A (en) 1993-07-21
CN1035013C true CN1035013C (en) 1997-05-28

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105331425B (en) * 2015-11-26 2019-11-05 珠海盖达实业有限公司 A kind of HZY5 synthetic brake fluid and preparation method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0334130A1 (en) * 1988-03-23 1989-09-27 Kao Corporation Plastic working oil for metal
US4960529A (en) * 1989-09-13 1990-10-02 Mobil Oil Corporation Diacyl halides with amines and phosphites as multifunctional lubricant additives
EP0459641A2 (en) * 1990-05-31 1991-12-04 Texaco Chemical Company Synthetic lubricant base stocks

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0334130A1 (en) * 1988-03-23 1989-09-27 Kao Corporation Plastic working oil for metal
US4960529A (en) * 1989-09-13 1990-10-02 Mobil Oil Corporation Diacyl halides with amines and phosphites as multifunctional lubricant additives
EP0459641A2 (en) * 1990-05-31 1991-12-04 Texaco Chemical Company Synthetic lubricant base stocks

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