CN113897233A - Solubility enhancer and preparation method thereof - Google Patents

Solubility enhancer and preparation method thereof Download PDF

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Publication number
CN113897233A
CN113897233A CN202111255578.8A CN202111255578A CN113897233A CN 113897233 A CN113897233 A CN 113897233A CN 202111255578 A CN202111255578 A CN 202111255578A CN 113897233 A CN113897233 A CN 113897233A
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Prior art keywords
isomeric alcohol
isomeric
adipate
solubility enhancer
alcohol
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CN202111255578.8A
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Chinese (zh)
Inventor
雷新宇
彭良溢
李志涛
汤倩云
赵玉贞
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China Petroleum and Chemical Corp
China Petrochemical Corp
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China Petroleum and Chemical Corp
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Priority to CN202111255578.8A priority Critical patent/CN113897233A/en
Publication of CN113897233A publication Critical patent/CN113897233A/en
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    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M129/00Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
    • C10M129/02Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
    • C10M129/04Hydroxy compounds
    • C10M129/06Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M129/00Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
    • C10M129/02Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
    • C10M129/68Esters
    • C10M129/72Esters of polycarboxylic acids
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M169/00Lubricating 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
    • C10M169/04Mixtures of base-materials and additives
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2203/00Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
    • C10M2203/10Petroleum or coal fractions, e.g. tars, solvents, bitumen
    • C10M2203/1006Petroleum or coal fractions, e.g. tars, solvents, bitumen used as base material
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/02Hydroxy compounds
    • C10M2207/021Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/28Esters
    • C10M2207/282Esters of (cyclo)aliphatic oolycarboxylic acids
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10NINDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/04Detergent property or dispersant property
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10NINDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2030/00Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
    • C10N2030/08Resistance to extreme temperature
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10NINDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00Specified use or application for which the lubricating composition is intended
    • C10N2040/135Steam engines or turbines

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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

The invention provides a solubility enhancer comprising an isomeric alcohol; the isomeric alcohol is selected from one or more of C12-C32 straight chain isomeric alcohol and C12-C32 branched chain isomeric alcohol. Compared with the prior art, the solubility enhancer provided by the invention takes mixed isomeric alcohol as a main body, further adipate as a cosolvent can be added, the dissolving capacity of the lubricating oil to degradation products is enhanced, and the solubility enhancer has good high-temperature performance, is an excellent lubricating oil detergent, is suitable for lubricating systems of equipment with higher working environment temperature, such as a steam turbine and the like, is beneficial to long-term use and maintenance of industrial equipment, solves the problem of varnish sludge accumulation which troubles the lubricating system of the industrial equipment for a long time, reduces the equipment maintenance cost, and has a very considerable development prospect.

Description

Solubility enhancer and preparation method thereof
Technical Field
The invention belongs to the technical field of lubricating oil, and particularly relates to a solubility enhancer and a preparation method thereof.
Background
Lubricating oils can degrade during their use by a variety of mechanisms, including oxidation, thermal degradation, and hydrolysis. As the concentration increases, such degradation products become insoluble in the lubricating oil and precipitate out of solution onto the metal surfaces and critical mechanical parts of the lubricating system, causing some damage to the equipment, reducing equipment reliability and service life, leading to safety risks in use.
The addition of the solubility enhancer is a better varnish and oil sludge removal scheme, and the solubility of the oil product in varnish and oil sludge can be enhanced by adding a small amount of the solubility enhancer into the oil product. In the operation process of equipment, along with the generation of degradation products such as varnish, oil sludge and the like, the lubricating oil added with the solubility enhancer can dissolve a large amount of degradation products under the condition of keeping the performance of the oil almost unchanged, so that the varnish and the oil sludge are prevented from being attached to the surface of the equipment. The characteristic enables the lubricating oil to be normally used in equipment for a longer time, prolongs the oil change period and reduces the use cost of the equipment. Meanwhile, because varnish and oil sludge attached to the equipment are reduced, the service life of the equipment is prolonged, and the use safety is greatly improved.
Currently, there are few products on the market for solubility enhancers. According to the present data, solubility enhancers can be divided into three types: ester type, ether type and alcohol type. Ester type and ether type solubility enhancers are not available in the market due to the complex synthetic route and high production cost. The alcohol-type solubility enhancer is only a product of American Fluitec company at present, and application cases of the company show that the alcohol-type solubility enhancer has better capability of enhancing the solubility of lubricating oil and has good compatibility with various types of II, III and IV oil.
However, the main problems with alcohol-based solubility enhancers are: 1) the price is high, the Fluitec company monopolizes production and sale, the price per ton is nearly million yuan, and the cost of the oil for equipment is greatly improved; 2) the alcohol-type solubility enhancer has narrow application temperature, poor high-temperature performance and poor low-temperature performance, and cannot adapt to the working conditions of extremely high-temperature or low-temperature environments.
Disclosure of Invention
In view of the above, the technical problem to be solved by the present invention is to provide a solubility enhancer and a preparation method thereof, wherein the solubility enhancer improves the dissolving capacity of oil products to degradation products through compound improvement of various compounds, so that the oil products have good varnish and oil sludge generation resistance while maintaining good performance, and is suitable for equipment with high temperature working conditions such as steam turbines.
The invention provides a solubility enhancer comprising an isomeric alcohol;
the isomeric alcohol is selected from one or more of C12-C32 straight chain isomeric alcohol and C12-C32 branched chain isomeric alcohol.
Preferably, the number of branches in the branched isomeric alcohol is 1-4.
Preferably, the isomeric alcohol is selected from one or more of a linear isomeric alcohol from C12 to C16, a branched isomeric alcohol from C12 to C16, a linear isomeric alcohol from C17 to C22, a branched isomeric alcohol from C17 to C22, a linear isomeric alcohol from C23 to C32 and a branched isomeric alcohol from C23 to C32.
Preferably, the number of branched chains in the branched chain isomeric alcohol of C12-C16 is 1-3; the number of branched chains in the branched chain isomeric alcohol of C17-C22 is 1-2; the number of branched chains in the branched chain isomeric alcohol of C23-C32 is 1-4.
Preferably, further comprising adipate esters; the mass ratio of the isomeric alcohol to the adipate is (90-100): (0.1-10).
Preferably, the adipate is selected from one or more of n-octanol adipate, n-heptanol-n-octanol adipate, isodecanol adipate and isododecanol adipate.
Preferably, the mass ratio of the isomeric alcohol to the adipate is (98-100): (0.1-2).
The invention also provides a preparation method of the solubility enhancer, which comprises the following steps:
the isomeric alcohol is heated and stirred evenly to obtain the solubility reinforcing agent.
Preferably, adipate is also added; the heating temperature is 70-120 ℃.
The invention also provides lubricating oil comprising the solubility enhancer.
The invention provides a solubility enhancer comprising an isomeric alcohol; the isomeric alcohol is selected from one or more of C12-C32 straight chain isomeric alcohol and C12-C32 branched chain isomeric alcohol. Compared with the prior art, the solubility enhancer provided by the invention takes mixed isomeric alcohol as a main body, further adipate as a cosolvent can be added, the dissolving capacity of the lubricating oil to degradation products is enhanced, and the solubility enhancer has good high-temperature performance, is an excellent lubricating oil detergent, is suitable for lubricating systems of equipment with higher working environment temperature, such as a steam turbine and the like, is beneficial to long-term use and maintenance of industrial equipment, solves the problem of varnish sludge accumulation which troubles the lubricating system of the industrial equipment for a long time, reduces the equipment maintenance cost, and has a very considerable development prospect.
Experimental results show that when the solubility enhancer obtained by the invention is added into lubricating oil, the paint film tendency index (MPC value) of the lubricating oil is reduced by more than 50%; the flash point (opening) is more than 200 ℃ and the pour point is less than-30 ℃.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a solubility enhancer which comprises isomeric alcohol, wherein the isomeric alcohol is one or more of C12-C32 straight chain isomeric alcohol and C12-C32 branched chain isomeric alcohol.
According to the invention, isomeric alcohol is used as a main body, preferably adipate is also added as a cosolvent, and a mixed liquid capable of effectively enhancing the solubility of the lubricating oil is obtained by blending and compounding; the mass ratio of the isomeric alcohol to the adipate is preferably (90-100): (0.1-10), more preferably (98-100): (0.1-2).
The number of branched chains in the branched chain isomeric alcohol of C12-C32 is preferably 1-4; in the present invention, preferably, the isomeric alcohol is one or more of a linear isomeric alcohol having a carbon number of 12 to 16, a branched isomeric alcohol having a carbon number of 12 to 16, a linear isomeric alcohol having a carbon number of 17 to 22, a branched isomeric alcohol having a carbon number of 17 to 22, a linear isomeric alcohol having a carbon number of 23 to 32, and a branched isomeric alcohol having a carbon number of 23 to 32; the number of branched chains in the branched chain isomeric alcohol of C12-C16 is preferably 1-3; the number of branched chains in the branched chain isomeric alcohol of C17-C22 is preferably 1-2; the number of branched chains in the branched chain isomeric alcohol of C23-C32 is preferably 1-4; more preferably, the isomeric alcohol is two or three of C12-C16 straight chain isomeric alcohol, C12-C16 branched chain isomeric alcohol, C17-C22 straight chain isomeric alcohol, C17-C22 branched chain isomeric alcohol, C23-C32 straight chain isomeric alcohol and C23-C32 branched chain isomeric alcohol, and still more preferably, the isomeric alcohol is three of isotetradecanol, isohexadecanol, isooctadecanol, isoeicosanol, isotetracosanol and isohexacosanol; the mass ratio of the three in which the number of carbon atoms is less than or equal to at most (1 to 3.5): (1-3.5): (1-3.5), more preferably (2-3.5): (2-3.5): (2-3.5), preferably (2-3): (3-3.5): (3-3.5).
The adipate is preferably one or more of n-octanol adipate, n-heptanol-n-octanol adipate, isodecanol adipate and isododecanol adipate.
The solubility enhancer provided by the invention takes mixed isomeric alcohol as a main body, and further adipate as a cosolvent can be added, so that the solubility of the lubricating oil on degradation products can be enhanced, and the solubility enhancer also has good high-temperature performance, is an excellent lubricating oil detergent, is suitable for lubricating systems of equipment with higher working environment temperature, such as a steam turbine and the like, is beneficial to long-term use and maintenance of industrial equipment, solves the problem of varnish sludge accumulation which troubles the lubricating system of the industrial equipment for a long time, reduces the equipment maintenance cost, and has a very considerable development prospect.
The invention also provides a preparation method of the solubility enhancer, which comprises the following steps: the isomeric alcohol is heated and stirred evenly to obtain the solubility reinforcing agent.
In the present invention, the sources of all raw materials are not particularly limited, and they may be commercially available.
Preferably, the isomeric alcohol and the adipate are heated and stirred uniformly after being mixed; the types and proportions of the isomeric alcohols and the adipic esters are the same as those described above, and are not described in detail herein.
Mixing isomeric alcohol and adipate, heating and stirring uniformly to obtain a solubility enhancer; the heating and stirring temperature is preferably 70-120 ℃, more preferably 80-110 ℃, and further preferably 90-100 ℃.
The invention also provides lubricating oil comprising the solubility enhancer; preferably further comprises lubricating oil; the mass of the solubility enhancer is 3 to 8 percent of the mass of the lubricating oil, more preferably 3 to 6 percent, and still more preferably 4 to 5 percent.
In order to further illustrate the present invention, a solubility enhancer and a method for preparing the same according to the present invention will be described in detail with reference to examples.
The reagents used in the following examples are all commercially available.
Example 1
Uniformly stirring 100% mixed isomeric alcohol (wherein the ratio of the isohexanol, the isotetracosanol and the isohexacosanol is 3:3.5:3.5) at the temperature of 95 ℃ to obtain the solubility enhancer with uniform and transparent appearance.
The solubility enhancing agent obtained in example 1 was subjected to performance test, and the results are shown in Table 1.
Table 1 solubility enhancer performance test results
Figure BDA0003323765960000041
Figure BDA0003323765960000051
The solubility enhancer obtained in example 1 was mixed with synthetic turbine oil No. 46 at a mass ratio of 1:20, and the results of the tests are shown in Table 2, and it can be seen that the viscosity and oxidation resistance were slightly decreased and the formation of a paint film was remarkably suppressed after the addition of the solubility enhancer. The addition of the solubility enhancing agent can achieve the effect of suppressing the varnish formation without affecting the use of the turbine oil itself.
TABLE 2 solubility enhancer and Engine oil mix test results
Figure BDA0003323765960000052
Example 2
Mixing 98% of mixed isomeric alcohol (wherein the ratio of isooctadecanol, isotetracosanol and isohexacosanol is 2:3:3.5) and 2% of n-octanol adipate, and stirring uniformly at 75 ℃ to obtain the solubility enhancer with uniform and transparent appearance.
The solubility enhancing agent obtained in example 2 was subjected to a performance test, and the results are shown in Table 3.
Table 3 solubility enhancer performance test results
Figure BDA0003323765960000053
Figure BDA0003323765960000061
The solubility enhancer obtained in example 2 was mixed with synthetic turbine oil No. 46 at a mass ratio of 1:20, and the results of the tests are shown in Table 4, which shows that the viscosity and oxidation resistance were slightly decreased and the formation of a paint film was remarkably suppressed after the solubility enhancer was added. The addition of the solubility enhancing agent can achieve the effect of suppressing the varnish formation without affecting the use of the turbine oil itself.
TABLE 4 solubility enhancer and Engine oil mix test results
Figure BDA0003323765960000062
Comparative example 1
Mixing 98% of mixed isomeric alcohol (wherein the ratio of iso-decyl alcohol, iso-eicosyl alcohol and iso-hexacyl alcohol is 2:3:3.5) and 2% of n-octyl alcohol adipate uniformly at 60 deg.C to obtain the solubility enhancer with uniform and transparent appearance.
The solubility enhancing agents obtained in comparative example 1 were examined, and the results are shown in Table 5.
Table 5 test results for solubility enhancer performance of comparative example 1
Figure BDA0003323765960000063
Figure BDA0003323765960000071
The solubility enhancer obtained in comparative example 1 was mixed with synthetic turbine oil No. 46 in a mass ratio of 1:20, and the results of the tests are shown in table 6, and it can be seen that the viscosity and oxidation resistance were slightly decreased but the generation of the paint film was not significantly suppressed after the addition of the solubility enhancer. The solubility enhancer with the addition ratio outside the protection range has poor effect of inhibiting the generation of the paint film.
Table 6 comparative example 1 results of testing the solubility enhancer mixed with engine oil
Figure BDA0003323765960000072

Claims (10)

1. A solubility enhancing agent comprising an isomeric alcohol;
the isomeric alcohol is selected from one or more of C12-C32 straight chain isomeric alcohol and C12-C32 branched chain isomeric alcohol.
2. The solubility enhancer according to claim 1, wherein the number of branches in the branched isomeric alcohol is 1 to 4.
3. The solubility enhancing agent of claim 1, wherein the isomeric alcohol is selected from one or more of the group consisting of C12-C16 linear isomeric alcohols, C12-C16 branched isomeric alcohols, C17-C22 linear isomeric alcohols, C17-C22 branched isomeric alcohols, C23-C32 linear isomeric alcohols, and C23-C32 branched isomeric alcohols.
4. The solubility enhancer according to claim 3, wherein the number of branches in the branched isomeric alcohol having C12-C16 is 1-3; the number of branched chains in the branched chain isomeric alcohol of C17-C22 is 1-2; the number of branched chains in the branched chain isomeric alcohol of C23-C32 is 1-4.
5. The solubility enhancer of claim 1, further comprising an adipate; the mass ratio of the isomeric alcohol to the adipate is (90-100): (0.1-10).
6. The solubility enhancing agent of claim 5, wherein the adipate is selected from one or more of n-octanol adipate, n-heptanol n-octanol adipate, isodecanol adipate, and isododecanol adipate.
7. The solubility enhancer according to claim 5, wherein the mass ratio of the isomeric alcohol to the adipate is (98 to 100): (0.1-2).
8. A method of preparing a solubility enhancing agent, comprising:
the isomeric alcohol is heated and stirred evenly to obtain the solubility reinforcing agent.
9. The method according to claim 8, wherein an adipate is further added; the heating temperature is 70-120 ℃.
10. A lubricating oil comprising the solubility enhancing agent as set forth in any one of claims 1 to 7.
CN202111255578.8A 2021-10-27 2021-10-27 Solubility enhancer and preparation method thereof Pending CN113897233A (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020243515A1 (en) * 2019-05-30 2020-12-03 Fluitec International Solvency enhancer compositions, methods of preparation and methods of use thereof

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020243515A1 (en) * 2019-05-30 2020-12-03 Fluitec International Solvency enhancer compositions, methods of preparation and methods of use thereof

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Application publication date: 20220107