CN114717037A - Preparation method of high-temperature-resistant ashless dispersant - Google Patents
Preparation method of high-temperature-resistant ashless dispersant Download PDFInfo
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- CN114717037A CN114717037A CN202110015502.1A CN202110015502A CN114717037A CN 114717037 A CN114717037 A CN 114717037A CN 202110015502 A CN202110015502 A CN 202110015502A CN 114717037 A CN114717037 A CN 114717037A
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- ashless dispersant
- maleic anhydride
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- temperature resistant
- high temperature
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- 239000002270 dispersing agent Substances 0.000 title claims abstract description 54
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000006243 chemical reaction Methods 0.000 claims abstract description 19
- 229920002873 Polyethylenimine Polymers 0.000 claims abstract description 15
- 229920002367 Polyisobutene Polymers 0.000 claims abstract description 15
- 229910052796 boron Inorganic materials 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 14
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229920005862 polyol Polymers 0.000 claims abstract description 11
- 150000003077 polyols Chemical class 0.000 claims abstract description 11
- 239000002199 base oil Substances 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 238000001914 filtration Methods 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims abstract description 7
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 18
- 229910052757 nitrogen Inorganic materials 0.000 claims description 9
- 239000011261 inert gas Substances 0.000 claims description 6
- FBPFZTCFMRRESA-KVTDHHQDSA-N D-Mannitol Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-KVTDHHQDSA-N 0.000 claims description 5
- 229930195725 Mannitol Natural products 0.000 claims description 5
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 239000000594 mannitol Substances 0.000 claims description 5
- 235000010355 mannitol Nutrition 0.000 claims description 5
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims description 5
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 4
- 239000004327 boric acid Substances 0.000 claims description 4
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 claims description 3
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 claims description 3
- TVXBFESIOXBWNM-UHFFFAOYSA-N Xylitol Natural products OCCC(O)C(O)C(O)CCO TVXBFESIOXBWNM-UHFFFAOYSA-N 0.000 claims description 3
- HEBKCHPVOIAQTA-UHFFFAOYSA-N meso ribitol Natural products OCC(O)C(O)C(O)CO HEBKCHPVOIAQTA-UHFFFAOYSA-N 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- VGTPKLINSHNZRD-UHFFFAOYSA-N oxoborinic acid Chemical compound OB=O VGTPKLINSHNZRD-UHFFFAOYSA-N 0.000 claims description 3
- 230000035484 reaction time Effects 0.000 claims description 3
- 239000000600 sorbitol Substances 0.000 claims description 3
- 235000010356 sorbitol Nutrition 0.000 claims description 3
- 239000000811 xylitol Substances 0.000 claims description 3
- HEBKCHPVOIAQTA-SCDXWVJYSA-N xylitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)CO HEBKCHPVOIAQTA-SCDXWVJYSA-N 0.000 claims description 3
- 235000010447 xylitol Nutrition 0.000 claims description 3
- 229960002675 xylitol Drugs 0.000 claims description 3
- -1 organo borates Chemical class 0.000 claims description 2
- 239000010687 lubricating oil Substances 0.000 abstract description 5
- 239000010705 motor oil Substances 0.000 abstract description 3
- 238000002485 combustion reaction Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 11
- 238000012360 testing method Methods 0.000 description 9
- 239000000654 additive Substances 0.000 description 4
- 239000000571 coke Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 239000010802 sludge Substances 0.000 description 4
- 150000002148 esters Chemical class 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 125000004185 ester group Chemical group 0.000 description 2
- KZNICNPSHKQLFF-UHFFFAOYSA-N succinimide Chemical group O=C1CCC(=O)N1 KZNICNPSHKQLFF-UHFFFAOYSA-N 0.000 description 2
- LGQXXHMEBUOXRP-UHFFFAOYSA-N tributyl borate Chemical compound CCCCOB(OCCCC)OCCCC LGQXXHMEBUOXRP-UHFFFAOYSA-N 0.000 description 2
- 101100117236 Drosophila melanogaster speck gene Proteins 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 150000004982 aromatic amines Chemical class 0.000 description 1
- 229910052728 basic metal Inorganic materials 0.000 description 1
- 150000003818 basic metals Chemical class 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001638 boron Chemical class 0.000 description 1
- 238000005271 boronizing Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
Images
Classifications
-
- 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
- C10M157/00—Lubricating compositions characterised by the additive being a mixture of two or more macromolecular compounds covered by more than one of the main groups C10M143/00 - C10M155/00, each of these compounds being essential
- C10M157/04—Lubricating compositions characterised by the additive being a mixture of two or more macromolecular compounds covered by more than one of the main groups C10M143/00 - C10M155/00, each of these compounds being essential at least one of them being a nitrogen-containing compound
-
- 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
- C10M177/00—Special methods of preparation of lubricating compositions; Chemical modification by after-treatment of components or of the whole of a lubricating composition, not covered by other classes
-
- 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
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/10—Macromolecular compoundss obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/102—Polyesters
-
- 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
- C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2217/04—Macromolecular compounds from nitrogen-containing monomers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2217/044—Polyamides
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
- Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
Abstract
The invention relates to a preparation method of a high-temperature resistant ashless dispersant, which comprises the following steps: (1) adding polyisobutenyl maleic anhydride, base oil and polyol into a reaction kettle, and heating to 100-220 ℃ under the condition of stirring to react for 3-10 hours; (2) continuously adding polyethyleneimine, and reacting for 2-10 hours at 100-200 ℃; then adding a boron-containing reagent, reacting for 3-10 hours at 100-200 ℃, and filtering to obtain a product after the reaction is finished; wherein the molar ratio of the polyisobutylene maleic anhydride to the polyol is 1: 0.2-0.8, the molar ratio of the polyisobutylene maleic anhydride to the polyethyleneimine is 1: 0.1-0.4, and the molar ratio of the polyisobutylene maleic anhydride to the boron-containing reagent is 1: 0.4-2.0. The dispersant prepared by the method has good dispersibility, detergency and high-temperature stability, and is suitable for internal combustion engine oil and industrial lubricating oil.
Description
Technical Field
The invention relates to the field of lubricating oil additives, in particular to a preparation method of a high-temperature resistant ashless dispersant.
Background
Ashless dispersants are one of the important additives in lubricating oil additives. The ashless dispersant functions primarily to suspend contaminants in the lubricating oil, allowing substances such as sludge, varnish and sludge to disperse in the oil. With the continuous upgrading and updating of various types of internal combustion engine oil, the specification of new oil products is increasingly improved, and higher requirements are put forward on the low-temperature dispersion performance and the high-temperature oxidation resistance of the oil products. There is a need for purposefully improved related aspects to current stage lubricating oil additives.
The ashless dispersant containing the ester-based structure has good oxidation resistance and high-temperature stability, and can effectively control the generation of sediments in a heavy-duty engine. Chinese patent CN1186078 reports a process for the preparation of ester ashless dispersants from pentaerythritol, using a basic metal catalyst. U.S. patent No. US20100130393 discloses an ashless dispersant prepared from a polyol and an aromatic amine, and dispersants containing ester groups in the structure also have particularly excellent soot dispersing properties.
The boron modified ashless dispersant has good dispersing performance, wear resistance and rubber compatibility. European patents EP0499384, EP0486835 and U.S. Pat. Nos. 4,989,983,4985156,3442808, 4328113,4426305 all report boron modified ashless dispersants based on succinimide structures which do not contain ester groups in their structure. Chinese patents CN1258728, CN1590518, CN1274795, CN10292525 and the like report the synthesis process of the boron modified ashless dispersant based on the succinimide structure, and the obtained product has good high temperature resistance and oxidation resistance.
Although the reported boron modified ashless dispersant has the characteristic of better high temperature resistance, the working temperature of engine oil is higher and higher along with the improvement of engine technology (piston is changed from aluminum piston to cylinder piston, etc.), which puts higher requirements on high temperature dispersing performance, high temperature detergency, etc. of oil products, so that the development of a dispersant with better high temperature resistance is needed.
Disclosure of Invention
Based on the above, the invention aims to provide a preparation method of a high-temperature resistant ashless dispersant, which has good dispersibility, detergency and high-temperature stability.
Therefore, the invention provides a preparation method of a high-temperature resistant ashless dispersant, which comprises the following steps:
(1) adding polyisobutenyl maleic anhydride, base oil and polyol into a reaction kettle, and heating to 100-220 ℃ under the condition of stirring to react for 3-10 hours;
(2) continuously adding polyethyleneimine, and reacting for 2-10 hours at 100-200 ℃; and then adding a boron-containing reagent, reacting for 3-10 hours at 100-200 ℃, and filtering to obtain the product after the reaction is finished.
In the preparation method of the high-temperature-resistant ashless dispersant, the molar ratio of the polyisobutylene maleic anhydride to the polyol is preferably 1: 0.2-0.8.
In the preparation method of the high-temperature resistant ashless dispersant, the molar ratio of the polyisobutylene maleic anhydride to the polyethyleneimine is preferably 1: 0.1-0.4.
According to the preparation method of the high-temperature-resistant ashless dispersant, the molar ratio of the polyisobutylene maleic anhydride to the boron-containing agent is preferably 1: 0.4-2.0.
In the preparation method of the high-temperature resistant ashless dispersant, the number average molecular weight of the polyisobutenyl maleic anhydride is preferably 800-2500.
In the method for preparing the high temperature resistant ashless dispersant, the polyhydric alcohol is preferably xylitol, sorbitol, mannitol, pentaerythritol or a mixture thereof.
The preparation method of the high-temperature resistant ashless dispersant provided by the invention is preferably that the number average molecular weight of the polyethyleneimine is 300-1200, and preferably 300, 600 or 900.
The invention provides a preparation method of a high-temperature resistant ashless dispersant, wherein preferably, the boronizing agent comprises at least one of boric acid, metaboric acid and organic boron ester.
According to the preparation method of the high-temperature-resistant ashless dispersant, the reaction temperature is preferably 130-200 ℃.
The preparation method of the high-temperature resistant ashless dispersant provided by the invention has the advantage that the reaction time is preferably 15-24 hours.
In the preparation method of the high temperature resistant ashless dispersant provided by the invention, preferably, the reaction is carried out under the condition of continuously introducing inert gas.
In the preparation method of the high-temperature resistant ashless dispersant, the inert gas is preferably nitrogen.
Drawings
FIG. 1 is a flow chart of the steps of a method of preparing a high temperature resistant ashless dispersant of the present invention.
FIG. 2 is a flowchart of the steps of example 1 of the present invention.
FIG. 3 is a flowchart of the steps of embodiment 2 of the present invention.
FIG. 4 is a flowchart of the steps of embodiment 3 of the present invention.
Detailed Description
The following examples illustrate the invention in detail: the present example is carried out on the premise of the technical scheme of the present invention, and detailed embodiments and processes are given, but the scope of the present invention is not limited to the following examples, and the experimental methods without specific conditions noted in the following examples are generally based on conventional conditions.
The preparation method of the high-temperature resistant ashless dispersant provided by the invention comprises the following steps:
(1) adding polyisobutenyl maleic anhydride, base oil and polyol into a reaction kettle, and heating to 100-220 ℃ under the condition of stirring to react for 3-10 hours;
(2) continuously adding polyethyleneimine, and reacting for 2-10 hours at 100-200 ℃; and then adding a boron-containing reagent, reacting for 3-10 hours at 100-200 ℃, and filtering to obtain the product after the reaction is finished.
In some embodiments, it is preferred that the molar ratio of the polyisobutylene maleic anhydride to the polyol is 1:0.2 to 0.8.
In some embodiments, it is preferred that the molar ratio of the polyisobutylene maleic anhydride to the polyethyleneimine is 1:0.1 to 0.4.
In some embodiments, it is preferred that the molar ratio of the polyisobutylene maleic anhydride to the boron containing agent is 1:0.4 to 2.0.
In some embodiments, it is preferred that the polyisobutenyl maleic anhydride has a number average molecular weight of 800 to 2500.
In some embodiments, it is preferred that the polyol is xylitol, sorbitol, mannitol, pentaerythritol or mixtures thereof.
In some embodiments, it is preferred that the polyethyleneimine has a number average molecular weight of 300 to 1200, preferably 300, 600 or 900.
In some embodiments, it is preferred that the boronating agent comprises at least one of boric acid, metaboric acid, and organoboron esters.
In some embodiments, it is preferred that the reaction temperature is from 130 ℃ to 200 ℃.
In some embodiments, it is preferred that the reaction time is 15 to 24 hours.
In some embodiments, it is preferred that the reaction is carried out under continuous inert gas feed.
In some embodiments, it is preferred that the inert gas is nitrogen.
Example 1
50.0g of polyisobutylene maleic anhydride having a molecular weight of 2000, 50.0g of base oil and 3.0g of pentaerythritol were placed in a 250mL glass flask equipped with a stirrer, a thermometer, a heating mantle and a nitrogen line, nitrogen was introduced, the mechanical stirrer was started to stir, and the temperature was raised to 192 ℃ to react for 6 hours.
5.0g of polyethyleneimine (molecular weight: 300) was further added, and the reaction was carried out at 150 ℃ for 6 hours. And continuously adding 5g of boric acid, reacting for 6 hours at the temperature of 100-170 ℃, and filtering to obtain the product after the reaction is finished.
Example 2
100.0g of polyisobutylene maleic anhydride having a molecular weight of 2300, 100.0g of base oil and 4.8g of mannitol were placed in a 500mL glass flask equipped with a stirrer, a thermometer, a heating mantle and a nitrogen line, nitrogen was introduced, the mechanical stirrer was started to stir, and the temperature was raised to 193 ℃ to react for 6 hours.
5g of polyethyleneimine (molecular weight 300) were further added and the reaction was carried out at 150 ℃ for 6 hours. And adding 10g of tributyl borate, reacting for 4 hours at the temperature of 100-130 ℃, heating to 170 ℃ for 5 hours, and filtering after the reaction is finished to obtain the product.
Example 3
100.0g of polyisobutylene maleic anhydride with a molecular weight of 2300, 80.0g of base oil and 5.2g of mannitol were placed in a 500mL glass flask equipped with a stirrer, a thermometer, a heating mantle and a nitrogen line, nitrogen was introduced, the mechanical stirrer was started to stir, and the temperature was raised to 198 ℃ to react for 6 hours.
6g of polyethyleneimine (molecular weight: 600) was further added and reacted at 150 ℃ for 6 hours. Adding 7g of tributyl borate, reacting for 4 hours at 100-140 ℃, reacting for 8 hours at 155-170 ℃, and filtering to obtain the product after the reaction is finished.
Example 4
This example is a sludge speck dispersancy test for ashless dispersants.
1g of an ashless dispersant (ashless dispersants obtained in examples 1 to 3 and comparative commercial ashless dispersants T151A and T154B), 9g of sludge and 10g of a base oil were placed together in a 50ml beaker, heated and stirred at a constant temperature of 150 ℃ for 1.5 hours, a drop of the above test oil was dropped onto a filter paper while hot, and the filter paper was placed in an oven at a constant temperature of 80 ℃ for 2 hours to measure the ratio of a diffusion ring to an oil ring, thereby obtaining the data of a spot test.
The results of the sludge-speck dispersibility test data for the ashless dispersants of the above examples and comparative examples are shown in table 1.
TABLE 1
| Example 1 | Example 2 | Example 2 | T154B | T151A | |
| SDT/％ | 67.3 | 68.0 | 67.6 | 69.1 | 66.7 |
As can be seen from Table 1, the high temperature resistant ashless dispersants prepared in examples 1-3 of the present invention have good dispersibility, comparable to the commercial products T151A and T154B ashless dispersants.
Example 5
This example is a coke slab test for ashless dispersants.
A test oil was prepared by adding 4 wt% of an ashless dispersant (ashless dispersants obtained in examples 1 to 3 and commercial comparative ashless dispersants T151A and T154B, respectively) to a base oil, 300mL of the test oil was added to an oil bath of a coke oven tester, the oil temperature was heated to 100 ℃ and the oven temperature was heated to 300 ℃ while the oil temperature and the oven temperature were maintained, the test was stopped and the coke oven was weighed to calculate the coke weight after starting up for 2 hours.
The results of the coke-forming tests for the ashless dispersants of the above examples and comparative examples are shown in Table 2.
TABLE 2
As can be seen from Table 2, the high temperature resistant ashless dispersants prepared in examples 1-3 of the present invention have excellent high temperature detergency and stability, which are significantly superior to the high temperature detergency and stability of the ashless dispersants T151A and T154B commercially available.
The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it is therefore intended that all such changes and modifications as fall within the true spirit and scope of the invention be considered as within the following claims.
Claims (9)
1. The preparation method of the high-temperature-resistant ashless dispersant is characterized by comprising the following steps of:
(1) adding polyisobutenyl maleic anhydride, base oil and polyol into a reaction kettle, and heating to 100-220 ℃ under the condition of stirring to react for 3-10 hours;
(2) continuously adding polyethyleneimine, and reacting for 2-10 hours at 100-200 ℃; then adding a boron-containing reagent, reacting for 3-10 hours at 100-200 ℃, and filtering to obtain a product after the reaction is finished;
wherein the molar ratio of the polyisobutylene maleic anhydride to the polyol is 1: 0.2-0.8, the molar ratio of the polyisobutylene maleic anhydride to the polyethyleneimine is 1: 0.1-0.4, and the molar ratio of the polyisobutylene maleic anhydride to the boron-containing reagent is 1: 0.4-2.0.
2. The method for preparing the high temperature resistant ashless dispersant according to claim 1, wherein the number average molecular weight of the polyisobutenyl maleic anhydride is 800 to 2500.
3. The method of preparing a high temperature resistant ashless dispersant according to claim 1, wherein said polyol comprises xylitol, sorbitol, mannitol, pentaerythritol or a mixture thereof.
4. The method for preparing the high temperature resistant ashless dispersant according to claim 1, characterized in that the polyethyleneimine has a number average molecular weight of 300 to 1200.
5. The method of preparing a high temperature resistant ashless dispersant of claim 4, wherein the number average molecular weight of said polyethyleneimine is 300, 600, or 900.
6. The method of preparing a high temperature resistant ashless dispersant of claim 1, wherein said boron-containing agent comprises at least one of boric acid, metaboric acid, and organo borates.
7. The method for preparing the high temperature resistant ashless dispersant of claim 1, wherein the reaction conditions are as follows: the temperature is 130-220 ℃, and the reaction time is 15-24 hours.
8. The method for preparing a high temperature resistant ashless dispersant according to claim 1, characterized in that said reaction is carried out under a condition of continuous inert gas introduction.
9. The method of preparing a high temperature resistant ashless dispersant of claim 1, wherein said inert gas is nitrogen.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3950341A (en) * | 1973-04-12 | 1976-04-13 | Toa Nenryo Kogyo Kabushiki Kaisha | Reaction product of a polyalkenyl succinic acid or its anhydride, a hindered alcohol and an amine |
| US4401581A (en) * | 1981-04-10 | 1983-08-30 | Edwin Cooper And Company Limited | Nitrogen-containing ashless dispersants and lubricating oil composition containing same |
| WO1995028460A1 (en) * | 1994-04-15 | 1995-10-26 | MOL Magyar Olaj- és Gázipari Részvénytársaság | Detergent - dispersant additive for lubricating oils of internal combustion engines and its preparation process |
| CN105985470A (en) * | 2015-02-27 | 2016-10-05 | 中国石油天然气股份有限公司 | Preparation method of boronized ashless dispersant |
-
2021
- 2021-01-06 CN CN202110015502.1A patent/CN114717037A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3950341A (en) * | 1973-04-12 | 1976-04-13 | Toa Nenryo Kogyo Kabushiki Kaisha | Reaction product of a polyalkenyl succinic acid or its anhydride, a hindered alcohol and an amine |
| US4401581A (en) * | 1981-04-10 | 1983-08-30 | Edwin Cooper And Company Limited | Nitrogen-containing ashless dispersants and lubricating oil composition containing same |
| WO1995028460A1 (en) * | 1994-04-15 | 1995-10-26 | MOL Magyar Olaj- és Gázipari Részvénytársaság | Detergent - dispersant additive for lubricating oils of internal combustion engines and its preparation process |
| CN105985470A (en) * | 2015-02-27 | 2016-10-05 | 中国石油天然气股份有限公司 | Preparation method of boronized ashless dispersant |
Non-Patent Citations (1)
| Title |
|---|
| 《化学化工大辞典》编委会编写: "《有机化工原料大全 中》", 化学工业出版社, pages: 1287 - 697 * |
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Application publication date: 20220708 |