CN101851311A - Preparation method of lubricating oil viscosity-temperature improver - Google Patents
Preparation method of lubricating oil viscosity-temperature improver Download PDFInfo
- Publication number
- CN101851311A CN101851311A CN200910255619A CN200910255619A CN101851311A CN 101851311 A CN101851311 A CN 101851311A CN 200910255619 A CN200910255619 A CN 200910255619A CN 200910255619 A CN200910255619 A CN 200910255619A CN 101851311 A CN101851311 A CN 101851311A
- Authority
- CN
- China
- Prior art keywords
- lubricating oil
- temperature
- propylene
- preparation
- viscosity
- 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.)
- Pending
Links
Landscapes
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
The invention relates to a preparation method of a lubricating oil viscosity-temperature improver, belonging to the lubricating oil field. The preparation method of the invention comprises the following steps: adding a solvent, i.e. hexane to a polymerization vessel at the temperature of 10-50 DEG C; continuously introducing ethylene, propylene, styrene and hydrogen to the vessel at a mol ratio of 0.1-0.3:0.45-1:1:0.8-1; stirring to react for 1-3h, and then adding a main catalyst, i.e. benzoyl peroxide and an assistant catalyst, i.e. aluminum triethyl, wherein the addition amount of the main catalyst is 0.01-1wt% of that of the solvent, and the addition amount of the assistant catalyst is 2-10 times that of the main catalyst; after reaction is completed, stopping stirring, and then adding methanol to terminate; and finally washing with alkali solution, and then drying in vacuum to obtain the product, i.e. a copolymer of ethylene, propylene and styrene. The preparation method can change the overall indicators of lubricating oil such as viscosity-temperature property, thickening capability, low-temperature performance, dispersibility and the like, thus the lubricating oil is obviously superior to the current similar products.
Description
Technical field
The invention belongs to the lubricating oil field, relate in particular to a kind of preparation method of lubricating oil viscosity-temperature improver.
Background technology
Viscosity-temperature improver is one of indispensable additive of multi-stage engine oil, and its proportion is only second to detergent-dispersant additive, and U.S.'s statistical figure show, the consumption of viscosity index improver is with annual 12% speed increment.The effect essence of viscosity-temperature improver is to improve the viscosity temperature characteristic of oil product, makes oil product have higher viscosity index, thereby guarantees that engine can start at low temperatures smoothly, and at high temperature oil product has enough viscosity, guarantees good lubricating.Require viscosity-temperature improver that oxidation stability, the detergency of oil product are not produced tangible harmful effect simultaneously, multi-stage engine oil viscosity loss under the effect of mechanical shear stress is few.The use properties of viscosity-temperature improver is mainly reflected in the aspects such as thickening ability, low-temperature performance and anti-shear performance to processed oil.
Viscosity-temperature improver is a kind of oil soluble high molecular polymer, at room temperature generally is rubber or solid form, and molecular weight is from several ten thousand to hundreds of thousands of, and the molecular-weight average of lubricating oil only is about 500.But when this high molecular polymer is dissolved in the lubricating oil, can form ball of string structure, and the less lubricating oil of the ball of string volume in solvent and molecular weight compare much bigger because the viscosity that makes oil product is much larger than oil body, the reason of thickening that Here it is.At low temperatures, high molecular polymer exists with a ball of string, and is little to the oil viscosity influence, and along with temperature raises, its ball of string is upheld, and effective volume increases, thereby the effect of oil product mobile obstacle is increased, and causes oil viscosity to enlarge markedly relatively.Viscosity-temperature improver just is based under the differing temps has different shape, and viscosity is produced different influences, to increase oil viscosity and to improve viscosity temperature characteristic.
Present commercial lubricating oil improving agent main products has T601, T602, T603, T604 etc.T601 belongs to poly-n-butyl vinyl ether class improving agent, its less stable, and also over-all properties is outstanding, thereby it uses minimizing day by day.T602 belongs to the methyl acrylic ester improving agent, though its sticking warm nature is pretty good, and poor heat stability in shear history, and shortage of raw materials, fetch long price.T603 belongs to the isobutylene type improving agent, and its high temperature quietness and low-temperature performance are undesirable, can not be used in the medium-to-high grade multi-grade oil.T604 belongs to ethylene, propylene high-molecular copolymer class improving agent, but up to the present its equipment all is to adopt the preparation of thermooxidative degradation method.In this method preparation process, degradation temperature is up to 320-350 ℃.Requirement to technology is relatively harsher.It is difficult to control, and product to contain dosage little, it is big that viscosity is sheared rate of descent.If add work energetically dosage and improve temperature again after, then technology is uncontrollable, thus unstable product quality, the bad dispersibility in the use, this is a big shortcoming of thermooxidizing preparation method.
Summary of the invention
The objective of the invention is to, overcome the deficiencies in the prior art, a kind of preparation method of lubricating oil viscosity-temperature improver is provided, this preparation method's technology is simple, raw material is easy to get, and the ethylene, propylene styrol copolymer of preparing can obviously change viscosity temperature characteristic, shear stability and the low-temperature performance of lubricating oil.
For solving the problems of the technologies described above, technical scheme of the present invention is: the preparation method of lubricating oil viscosity-temperature improver: add solvent hexane in polymerization container, be added to 10～50 ℃, in reactor, feed ethene continuously, propylene, vinylbenzene and hydrogen, hydrogen, ethene, propylene, cinnamic mol ratio is 0.1～0.3: 0.45～1: 1: 0.8～1, stirring reaction 1～3 hour, add Primary Catalysts benzoyl peroxide and promotor triethyl aluminum, the add-on of Primary Catalysts is 0.01～1% (weight) of solvent adding amount, the amount of promotor is 2～10 times of Primary Catalysts weight, after finishing, reaction stops to stir, adding methyl alcohol stops, with the alkaline solution washing, vacuum-drying obtains product ethylene, propylene styrol copolymer.
Alkaline solution of the present invention is the NaOH alkaline solution.
Ethene of the present invention, propylene and styrol copolymer, its nonpolar segment is by forming with the long-chain alkane of normal paraffin structure similar, have bigger solid and cover crystallite-cladded ability, when long-chain alkane form with normal paraffin closely near the time, the eutectic effect takes place, at this moment the nonpolar segment of the multipolymer fixed effect of weighing anchor is used for interfacial adsorption, has effectively prevented further growing up of crystal grain.Molecular weight distribution is narrowed down, and it is big that thickening ability becomes, and cutting performance improves, and low-temperature performance is also better simultaneously.In addition, because product of the present invention at high temperature has solvability preferably, then solvability is lower at low temperatures, does not influence low temperature flowability, thereby can be used as good thickening material.
The invention has the beneficial effects as follows: the inventive method technology is simple, raw material is easy to get, the ethylene, propylene styrol copolymer of preparing can obviously change viscosity temperature characteristic, shear stability and the low-temperature performance of lubricating oil, product of the present invention can change the viscosity-temperature characteristics of lubricating oil, thickening ability, low-temperature performance, overall targets such as dispersiveness all significantly are better than present like product.
Shear stability is the improved important Practical Performance of sticking temperature, and shear stability is relevant with molecular weight, molecular weight distribution and the polymer architecture of viscosity-temperature improver, but is mainly determined by molecular weight.Molecular weight of the present invention is 100000～200000, narrow molecular weight distribution, and can improve polymer architecture stability, and make polymkeric substance when keeping higher thickening ability, have higher shear stability.
Embodiment
Following embodiment is to further specifying of inventing, but the present invention is not limited only to this.
Embodiment 1
At 90m
3Polymerization container in add 18 tons of solvent hexanes, be added to 10 ℃, in reactor, feed ethene, propylene, vinylbenzene and hydrogen continuously, hydrogen, ethene, propylene, cinnamic mol ratio are 0.1: 0.45: 1: 0.8, and stirring reaction 1 hour adds 1.8kg Primary Catalysts benzoyl peroxide and 3.6kg promotor triethyl aluminum, after finishing, reaction stops to stir, add methyl alcohol and stop, with the washing of NaOH alkaline solution, vacuum-drying obtains product ethylene, propylene styrol copolymer.
Embodiment 2
At 90m
3Polymerization container in add 20 tons of solvent hexanes, be added to 20 ℃, in reactor, feed ethene, propylene, vinylbenzene and hydrogen continuously, hydrogen, ethene, propylene, cinnamic mol ratio are 0.3: 0.5: 1: 1, and stirring reaction 2 hours adds 20kg Primary Catalysts benzoyl peroxide and 80kg promotor triethyl aluminum, after finishing, reaction stops to stir, add methyl alcohol and stop, with the washing of NaOH alkaline solution, vacuum-drying obtains product ethylene, propylene styrol copolymer.
Embodiment 3
At 90m
3Polymerization container in add 25 tons of solvent hexanes, heat to 30 ℃, in reactor, feed ethene, propylene, vinylbenzene and hydrogen continuously, hydrogen, ethene, propylene, cinnamic mol ratio are 0.2: 1: 1: 0.8, and stirring reaction 2.5 hours adds 1 25kg Primary Catalysts benzoyl peroxide and 875kg promotor triethyl aluminum, after finishing, reaction stops to stir, add methyl alcohol and stop, with the washing of NaOH alkaline solution, vacuum-drying obtains product ethylene, propylene styrol copolymer.
Embodiment 4
At 90m
3Polymerization container in add 18 tons of solvent hexanes, be added to 50 ℃, in reactor, feed ethene, propylene, vinylbenzene and hydrogen continuously, hydrogen, ethene, propylene, cinnamic mol ratio are 0.25: 1: 1: 1, and stirring reaction 3 hours adds 180kg Primary Catalysts benzoyl peroxide and 1800kg promotor triethyl aluminum, after finishing, reaction stops to stir, add methyl alcohol and stop, with the washing of NaOH alkaline solution, vacuum-drying obtains product ethylene, propylene styrol copolymer.
Claims (2)
1. the preparation method of lubricating oil viscosity-temperature improver, it is characterized in that: in polymerization container, add solvent hexane, be added to 10～50 ℃, in reactor, feed ethene continuously, propylene, vinylbenzene and hydrogen, hydrogen, ethene, propylene, cinnamic mol ratio is 0.1～0.3: 0.45～1: 1: 0.8～1, stirring reaction 1～3 hour, add Primary Catalysts benzoyl peroxide and promotor triethyl aluminum, the add-on of Primary Catalysts is 0.01～1% (weight) of solvent adding amount, the amount of promotor is 2～10 times of Primary Catalysts weight, after finishing, reaction stops to stir, adding methyl alcohol stops, with the alkaline solution washing, vacuum-drying obtains product ethylene, propylene styrol copolymer.
2. the preparation method of lubricating oil viscosity-temperature improver according to claim 1, it is characterized in that: described alkaline solution is the NaOH alkaline solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910255619A CN101851311A (en) | 2009-12-09 | 2009-12-09 | Preparation method of lubricating oil viscosity-temperature improver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910255619A CN101851311A (en) | 2009-12-09 | 2009-12-09 | Preparation method of lubricating oil viscosity-temperature improver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101851311A true CN101851311A (en) | 2010-10-06 |
Family
ID=42803008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910255619A Pending CN101851311A (en) | 2009-12-09 | 2009-12-09 | Preparation method of lubricating oil viscosity-temperature improver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101851311A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105238502A (en) * | 2015-11-25 | 2016-01-13 | 济南昊泽环保科技有限公司 | Lubricating oil viscosity-temperature characteristic improver and preparing method thereof |
| WO2021027209A1 (en) * | 2019-08-14 | 2021-02-18 | 深圳昆油石化技术有限公司 | Composition containing star-shaped binary ethylene-propylene copolymer for improving lubricating oil viscosity index and preparation method thereof |
-
2009
- 2009-12-09 CN CN200910255619A patent/CN101851311A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105238502A (en) * | 2015-11-25 | 2016-01-13 | 济南昊泽环保科技有限公司 | Lubricating oil viscosity-temperature characteristic improver and preparing method thereof |
| WO2021027209A1 (en) * | 2019-08-14 | 2021-02-18 | 深圳昆油石化技术有限公司 | Composition containing star-shaped binary ethylene-propylene copolymer for improving lubricating oil viscosity index and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5543447B2 (en) | Isobutylene polymer and method for producing the same | |
| CN102464768B (en) | Preparation of high-strength nitrile butadiene rubber | |
| CN101434887B (en) | Lubricating oil viscosity index improver and preparation thereof | |
| CN112159520B (en) | Preparation method of modified poly (ethylene glycol adipate) | |
| CN101851311A (en) | Preparation method of lubricating oil viscosity-temperature improver | |
| CN113896879B (en) | High-viscosity ester for metal cutting fluid and preparation method thereof | |
| CN107200839A (en) | A kind of methallyl alcohol atactic polyether and preparation method thereof | |
| CN103965394B (en) | A kind of preparation method of polymethacrylate viscosity index improver | |
| CN100358825C (en) | Acrylic acid series multiple copolymer analog high efficiency water reducing agent and its synthesis method | |
| CN1944359A (en) | Process for preparing 2,5-norbornadiene | |
| CN111040854A (en) | Trace lubricating oil containing P-B-N composition and its preparing process | |
| CN105111462A (en) | Liquefied plant fiber feedstock and preparation method therefor | |
| CN101760264A (en) | Biodiesel lower-temperature fluidity improver and preparation method thereof | |
| CN108863785B (en) | Low-pour-point pentaerythritol oleate mixed ester and synthesis method thereof | |
| CN107501454A (en) | A kind of lubricating oil viscosity-temperature improver | |
| CN113667112B (en) | Synthesis method of high-melting-point isopentenyl alcohol polyoxyethylene ether | |
| CN106978240B (en) | PAO4 base oil and lubricating oil for jet engine | |
| CN102206058A (en) | Ultra-high efficiency polycarboxylate water reducer and preparation method thereof | |
| CN110157519B (en) | Lubricating oil pour point depressant copolymerized by soybean oil and acrylic ester and preparation method thereof | |
| CN111073727A (en) | Lubricating oil viscosity-temperature improver | |
| CN112646073B (en) | Oil-soluble thick oil viscosity reducer and preparation method thereof | |
| CN110240937A (en) | A method of from the fully synthetic lubricating oil of grease production | |
| CN115260362B (en) | Preparation method of lubricating oil base oil | |
| CN103304756A (en) | Aircraft hydraulic oil tackifier and synthetic method thereof | |
| CN113042061B (en) | Preparation method of catalyst, bio-based lubricating oil base oil and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20101006 |