CN107573985A - A kind of method of polymer modification lubricating oil - Google Patents
A kind of method of polymer modification lubricating oil Download PDFInfo
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- CN107573985A CN107573985A CN201610522192.1A CN201610522192A CN107573985A CN 107573985 A CN107573985 A CN 107573985A CN 201610522192 A CN201610522192 A CN 201610522192A CN 107573985 A CN107573985 A CN 107573985A
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Abstract
The present invention relates to lubricating oil field, discloses a kind of method of polymer modification lubricating oil, and this method includes：The polymer solution obtained after polymerisation is directly mixed with lube base oil, wherein, the polymer is selected from least one of EP rubbers, hydrogenated styrene butadiene block polymer and hydrogenated styrene polyisoprene block polymers.When method provided by the invention can overcome the solid lubrication oil viscosity index modifier of prior art to be lubricated the modification of oil base oil, mobility of the existing modification of lubricating oils that can not improve acquisition in ultralow temperature, and higher tackifying can not be provided in high temperature, the defects of so as to have impact on the viscosity-temperature characteristics of lubricating oil.The modification of lubricating oils product that the present invention obtains has excellent viscosity-temperature characteristics.
Description
Technical field
The present invention relates to lubricating oil field, in particular it relates to a kind of method of polymer modification lubricating oil.
Background technology
Oil body index is the about quantitative values of represent that oil viscosity varies with temperature one.Oil body refers to
Number is higher, and the change of its viscosity with temperature is smaller, and lubricating oil can be made to meet the requirement that high temperature is not dilute, low temperature is not thick.And moisten
The lubricant base oil viscosity of itself can not meet this requirement at all, it is therefore desirable to viscosity is added into lube base oil
Index modifier (tackifier) improves oil body index, to improve the viscosity temperature characteristic of lubricating oil.
VI improver by some there is the linear macromolecule organic compound of anti-shear performance to be formed, they
It is dissolved in lube base oil, elongation is expanded in high temperature, increases the resistance between lubrication oil molecule.Make lube base oil
The unlikely decline of viscosity is too big, keeps certain viscosity, plays due lubrication.And these macromolecular organics when low temperature
Compound curling reduce, be suspended in lube base oil, the resistance between lube base oil molecule thus reduce, make lubricating oil
Basic oil Viscosity will not increase too much, in order to avoid cause engine starting difficulty and increase abrasion.
Conventional lubricating oil viscosity index modifying agent includes ethylene-propylene copolymer, polyisobutene, poly-methyl methacrylate
Ester, hydrogenated styrene-butadiene (isoprene) block polymer (SEBS, SEPS) four major class, different OIL IN LUBRICATING OIL PRODUCTION business
Using different tackifier, as Shell lubricating oil using SEBS or SEPS does lubricant tackifier, Japan is done using SEPS mostly
Lubricant tackifier, in China due to there is no the industrialized SEBS lubricant tackifiers trade mark, therefore typically all use ethene-the third
Alkene copolymer, polyisobutene, polymethyl methacrylate make tackifier.
However, the solid lubrication oil viscosity index modifier provided using prior art is lubricated the modification of oil base oil
During processing, mobility of the modification of lubricating oils of acquisition in ultralow temperature can not be improved, and can not be provided in high temperature higher
Tackifying, so as to have impact on the viscosity-temperature characteristics of lubricating oil.
The content of the invention
The purpose of the present invention is that the solid lubrication oil viscosity index modifier for overcoming prior art is lubricated oil base oil
Modification when presence can not improve mobility of the modification of lubricating oils of acquisition in ultralow temperature, and can not be carried in high temperature
For higher tackifying, the defects of so as to influence the viscosity-temperature characteristics of lubricating oil, using molten directly by the polymer obtained after polymerization
Liquid is filled into lube base oil, to provide a kind of method of new polymer modification lubricating oil.
In fact, carry out polymer modification lubricating oil when, the straight polymer based on solid-state have convenience in transport, storage and
The advantages such as accurate metering, prior art is using the straight polymer of solid-state is dissolved into solvent, then again by the polymerization of acquisition
Thing solution, which is blended into lube base oil, to be reconciled, and in the presence of stirring, heating, is uniformly dispersed polymer solution
Into lubricating oil.However, it was found by the inventors of the present invention that using prior art method obtain modification of lubricating oils base oil simultaneously
The mobility in ultralow temperature can not be improved, and higher tackifying can not be provided in high temperature, so as to have impact on lubricating oil
Viscosity-temperature characteristics.Based on this, the present inventor provides technical solutions according to the invention improves modified lubrication to realize
Mobility and tackifying of the oil base oil under ultralow temperature and ultra-high temperature condition, so as to improve the viscosity-temperature characteristics of lubricating oil.
To achieve these goals, in a first aspect, the present invention provides a kind of method of polymer modification lubricating oil, this method
Including：The polymer solution obtained after polymerisation is directly mixed with lube base oil, wherein, the polymer choosing
From in EP rubbers, hydrogenated styrene-butadiene block polymer and hydrogenated styrene isoprene block polymer at least
It is a kind of.
Second aspect, the method that the present invention provides another polymer modification lubricating oil, this method include：
(1) polymer solution is prepared：Under the polymerization conditions, the corresponding monomer for forming the polymer is gathered
Close, obtain polymer solution, the polymer is selected from EP rubbers, hydrogenated styrene-butadiene block polymer and hydrogenation of benzene
At least one of ethene-polyisoprene block polymers；
(2) polymer modification lubricating oil is prepared：The polymer solution that step (1) is obtained is directly and lube base
Oil is mixed, and obtains mixture；
(3) mixture that step (2) obtains is introduced into progress desolventizing processing in solvent recovery unit.
VI improver is polymer solution used by the above-mentioned technical proposal of the present invention, and directly by after polymerization
Polymer solution be filled into lube base oil.
Flowing of the modification of lubricating oils of acquisition in ultralow temperature can be obviously improved using the above-mentioned technical proposal of the present invention
Property, and higher tackifying can be provided in high temperature, so that obtained modification of lubricating oils has excellent viscous Wen Te
Property.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Embodiment
The embodiment of the present invention is described in detail below.It is it should be appreciated that described herein specific
Embodiment is merely to illustrate and explain the present invention, and is not intended to limit the invention.
In a first aspect, the invention provides a kind of method of polymer modification lubricating oil, this method includes：By polymerisation
The polymer solution obtained afterwards is directly mixed with lube base oil, wherein, the polymer is selected from EP rubbers, hydrogenation
At least one of Styrene-Butadiene block polymer and hydrogenated styrene isoprene block polymer.
It is described directly mix referring to lube base oil by the EP rubbers glue obtained after polymerization, after polymerization
Obtained EP rubbers glue is directly mixed on the premise of without except solvent step with lubricating oil and base oil.
The lube base oil can be selected from paraffinic base (SN) series base oil, intermediate base (ZN) series base oil and
Cycloalkyl (DN) series base oil, preferably paraffinic base (SN) series base oil.
Preferably, the concentration of polymer is 5-25 weight % in the polymer solution.It is highly preferred that the polymer is molten
The concentration of polymer is 7-20 weight % in liquid.It was found by the inventors of the present invention that when the polymer in the polymer solution
When concentration is in the range of 7-20 weight %, polymer solution is easily realized with lube base oil and uniformly mixed, and needed for mixing
Temperature conditionss it is suitable with temperature conditionss needed for polymerization, therefore be not required to when polymer solution is mixed with lube base oil
Extra heat to be provided again, and ensure that the production efficiency of polymer and its modification of lubricating oils product；Moreover, work as the polymerization
When the concentration of polymer in thing solution is in the range of 7-20 weight %, by the modification of lubricating oils product of the method acquisition of the present invention
The performance under ultralow temperature and superhigh temperature can be improved more obviously.
Preferably, the mixed weight ratio of the lube base oil and polymer solution is 0.3-5：1；More preferably
0.8-3.5：1.It was found by the inventors of the present invention that the mixed weight ratio for controlling the lube base oil and polymer solution is
0.8-3.5：1, even more preferably 1-3.5：When 1, the viscosity of the modification of lubricating oils of acquisition can greatly be improved.
According to a kind of preferred embodiment, when the concentration of polymer in the polymer solution is 7-20 weights
% is measured, and the mixed weight of the lube base oil and polymer solution ratio is 1-3.5：When 1, the side of the present invention is enabled to
Mobility of the modification of lubricating oils that method obtains in ultralow temperature, and tackifying in high temperature are optimal.
Preferably, the condition of the mixing includes：Temperature is 30-80 DEG C, time 20-60min.
Preferably, the solvent in the polymerisation is at least one in C5-C10 alkane or C5-C10 cycloalkane
Kind；Solvent in more preferably described polymerisation is in pentane, isopentane, n-hexane, hexamethylene, normal heptane and normal octane
At least one.
The method of the present invention can further include：The polymer solution and the lube base oil are mixed
The mixture obtained after conjunction is introduced into progress desolventizing processing in solvent recovery unit.Do not have to the operating condition of desolventizing processing
There is special restriction, those skilled in the art can use conventional use of various operating conditions in the art to carry out, for example, institute
Stating desolventizing processing can be carried out in the solvent recovery unit including rectifying column.
Preferably, the polymer solution is EP rubbers glue.It is further preferred that the EP rubbers is binary second third
Rubber, its number-average molecular weight are 100,000~120,000, and molecular weight distribution index is 1.7~2.0, and the content of propylene construction unit is 48
~52 weight %, Mooney viscosity are 45~55.
The EP rubbers glue reacts preferably by vinyl monomer and propylene monomer under the conditions of solution polymerization to be made.
Preferably, the concentration of the EP rubbers polymer in the EP rubbers glue is 5-15 weight %.It is further preferred that the second
The concentration of EP rubbers polymer in third rubber glue is 7-10 weight %.The lube base oil and EP rubbers glue
Mixed weight ratio can be 0.3-3.5：1, preferably 0.8-5：1；More preferably 1-2：1.It was found by the inventors of the present invention that work as
The mixed weight ratio of the lube base oil and EP rubbers glue is 1-2：When 1, can have to lubricating oil viscosity index
More preferable modified effect.Preferably, the catalyst of the solution polymerization is vanadium system Ziegler-Natta catalyst, and solution gathers
The temperature for closing reaction is 25-65 DEG C, and the pressure of solution polymerization is 0.15-1.5MPa, total stop of the material in reactor
Time is 20-70min.To the number of the reactor, there is no particular limitation, for example, in the art, generally use series connection
Two reactors carry out the solution polymerization.
There is no particular limitation for the species of the catalyst used when the present invention is to preparing the EP rubbers glue, can adopt
With it is in the art it is conventional use of prepare EP rubbers when the catalyst that uses, exemplarily use vanadium in embodiments of the invention
Be Ziegler-Natta catalyst as the catalyst for preparing EP rubbers glue, those skilled in the art should not be construed as to this
The limitation of invention.
Second aspect, the invention provides a kind of method of polymer modification lubricating oil, this method includes：
(1) polymer solution is prepared：Under the polymerization conditions, the corresponding monomer for forming the polymer is gathered
Close, obtain polymer solution, the polymer is selected from EP rubbers, hydrogenated styrene-butadiene block polymer and hydrogenation of benzene
At least one of ethene-polyisoprene block polymers；
(2) polymer modification lubricating oil is prepared：The polymer solution that step (1) is obtained is directly and lube base
Oil is mixed, and obtains mixture；
(3) mixture that step (2) obtains is introduced into progress desolventizing processing in solvent recovery unit.
The technical characteristic such as involved parameter, definition, scope, equipment quotes the present invention's in the second aspect of the present invention
Described in first aspect, the present invention will not be repeated here.
The monomer and the usage ratio of solvent used when the method for the present invention is to preparing polymer solution be not specific
It is required that those skilled in the art can use conventional dosage in the art to prepare polymer solution.As long as this can be obtained
The polymer solution of invention afore mentioned concentration.
In the present invention, carry out the equipment of the polymerisation can use traditional tank polymerization reactor or this area its
Its reactor, preferably tank polymerization reactor.
According to a kind of preferred embodiment, the polymer is EP rubbers, that is, the polymer solution is
EP rubbers glue.It is highly preferred that the polymer is EPM.
Other two kinds of specific embodiments presented below：
Embodiment 1：The polymer is hydrogenated styrene-butadiene block polymer, prepare hydrogenated styrene-
The method of butadiene block polymer solution includes：Styrene monomer and divinylic monomer are entered under the conditions of solution polymerization
Row polymerisation, obtained Styrene-Butadiene block polymer solution is then subjected to hydrogenation reaction, hydrogenation of benzene second is made
Alkene-butadiene block polymer solution.The catalyst of the polymerisation is preferably lithium-based catalyst, and the temperature of polymerisation is
35-110 DEG C, the pressure of polymerisation is 0.15-0.8MPa, and total reaction time of the material in polymer reactor is 60-
180min.And the catalyst of the hydrogenation reaction is preferably nickel catalyst, the temperature of hydrogenation reaction is 40-80 DEG C, hydrogenation
The pressure of reaction is 2.0-6.0MPa, and total reaction time of the material in hydrogenation reactor is 30-180min.
Preferably, the number-average molecular weight of the hydrogenated styrene-butadiene block polymer is 5.5 ten thousand~6.5 ten thousand, molecule
It is 1.05~1.1 to measure breadth coefficient, and the content of styrol structural unit is 30~40 weight %, and degree of hydrogenation is 98~100%.
Embodiment 2：The polymer is hydrogenated styrene isoprene block polymer, prepares hydrogenation of benzene second
The method of alkene-polyisoprene block polymers solution includes：By styrene monomer and isoprene monomer in solution polymerization
Under the conditions of carry out polymerisation, then by obtained styrene-isoprene block polymer solution carry out hydrogenation reaction, be made
Hydrogenated styrene isoprene block polymer solution.The catalyst of the polymerisation is preferably lithium series anionic catalyst,
The temperature of polymerisation is 50-90 DEG C, and the pressure of polymerisation is 0.15-0.7MPa, and material is total anti-in polymer reactor
It is 50-150min between seasonable.And the catalyst of the hydrogenation reaction is preferably nickel catalyst, the temperature of hydrogenation reaction is
50-70 DEG C, the pressure of hydrogenation reaction is 3.0-5.0MPa, and total reaction time of the material in hydrogenation reactor is 30-180min.
Preferably, the number-average molecular weight of the hydrogenated styrene isoprene block polymer is 200,000~250,000, molecule
It is 1.05~1.1 to measure breadth coefficient, and the content of styrol structural unit is 25~40 weight %, and degree of hydrogenation is 97~100%.
In method described in the first aspect of the present invention and second aspect, preferably the desolventizing processing the step of be：It is logical
Cross and take off light, dehydration, de- weight, the lubricating oil for making to be free of solvent but contain polymer is produced from lightness-removing column bottom of towe as heavy constituent, gathered
The solvent added during conjunction from lightness-removing column overhead extraction, the polymer solvent after extraction continue on through dehydration, it is de- operate again after from weight-removing column
Overhead extraction, obtained smart solvent can return to polymerization workshop section and recycle.
The process of the present invention can use andnon-continuous operation manner or take continuous operation mode to carry out.
Exemplified by synthesizing EP rubbers glue, wherein, synthesize EP rubbers used in catalyst, solvent, vinyl monomer and
Propylene monomer continuously enters the copolymerization that ethene and propylene are carried out in 2 polymer reactors connected in equal volume, after reaction
Obtained EP rubbers glue enters lubricating oil Mixer pot, is mixed with raw lube base oil.After well mixed, contain
The lubricating oil of EP rubbers and polymer solvent is isolated the polymer solvent contained in lubricating oil with solvent recovery workshop section is pumped into
Come, so as to obtain through the modified lubricating oil of pure EP rubbers, and the polymer solvent reclaimed can return to polymerization workshop section after refined
Re-use.
The method of the present invention also has the effect for saving energy consumption relative to prior art.
The present invention will be described in detail by way of examples below.
In case of no particular description, various raw materials used below are all from commercially available.
In the case of no conversely explanation, two kettle series polymerizations works are used in example 1 below -5,8 and comparative example 1
Skill is carried out, and the volume of two reactors is equal, is 100L, and prepares EPM glue by solvent of n-hexane
Liquid.
The major catalyst of vanadium system Ziegler-Natta catalyst used below is the hexane solution of vanadium oxytrichloride, helps and urges
Agent is the hexane solution of sesquialter aluminium, and the mol ratio of pure major catalyst and pure co-catalyst is 20：1；Lithium-based catalyst is
The hexane solution of n-BuLi；The major catalyst of nickel catalyst be nickel naphthenate hexane solution, co-catalyst three
The hexane solution of aluminium isobutyl, and the mol ratio of pure major catalyst and pure co-catalyst is 1：4.
Carried out in example 1 below -8 and comparative example 1 using continuous operation process.
Example 1 below -8 is identical with the lube base oil used in comparative example 1, is commercially available paraffin base oil
150SN, and property is as shown in table 1.
Table 1
Embodiment 1-8 is used for the method for illustrating the polymer modification lubricating oil of the present invention.
Embodiment 1
The polymeric reaction condition that the present embodiment uses for：The dosage weight ratio of vinyl monomer, propylene monomer and n-hexane is
1：4：16；Using vanadium system Ziegler-Natta catalyst, the temperature of the first polymer reactor is 35 DEG C, pressure 0.8MPa, average
Residence time is 15min；The temperature of second polymer reactor is 48 DEG C, pressure 1.0MPa, mean residence time 15min.
Finally giving the EPM glue that concentration is 7 weight %, (number-average molecular weight of the EPM is 10.5 ten thousand, is divided
Son amount breadth coefficient is 1.8, and the content of propylene construction unit is 49 weight %, Mooney viscosity 47), and pure EPM
Production capacity be 20kg/h, with pump with 285kg/h flow by obtained EPM glue introduce with stirring lubrication
In oily Mixer pot, while also the lube base oil that flow is 350kg/h is sent into lubricating oil Mixer pot.At 65 DEG C, two
First EP rubbers glue with lube base oil in Mixer pot stirs 40min, and (i.e. mixed solution being averaged in Mixer pot is stopped
It is 40min to stay the time)；Then the mixed solution of acquisition is introduced to three tower cascade connected distillation process, by de- light, dehydration, take off weight,
The hexane solvent brought into by EPM glue in lubricating oil is removed, is obtained through the modified modified profit of EPM
Lubricating oil product, and hexane solvent is subjected to refined rear recycling.
As a result, the property for the modification of lubricating oils product that the present embodiment obtains is as shown in table 2.
Table 2
Embodiment 2
The polymeric reaction condition that the present embodiment uses for：The dosage weight ratio of vinyl monomer, propylene monomer and n-hexane is
1：4：16；Using vanadium system Ziegler-Natta catalyst, the temperature of the first polymer reactor is 30 DEG C, pressure 0.8MPa, average
Residence time is 22min；The temperature of second polymer reactor is 45 DEG C, pressure 1.0MPa, mean residence time 22min.
Finally giving the EPM glue that concentration is 10 weight %, (number-average molecular weight of the EPM is 110,000, is divided
Son amount breadth coefficient is 1.9, and the content of propylene construction unit is 50 weight %, Mooney viscosity 50), and pure EPM
Production capacity be 20kg/h, with pump with 200kg/h flow by obtained EPM glue introduce with stirring lubrication
In oily Mixer pot, while also the lube base oil that flow is 400kg/h is sent into lubricating oil Mixer pot.At 56 DEG C, two
First EP rubbers glue stirs 45min with lube base oil in Mixer pot；Then the mixed solution of acquisition is used and reality
The identical distillation process of example 1 is applied to carry out desolventizing processing, is obtained through the modified modification of lubricating oils product of EPM,
And hexane solvent is subjected to refined rear recycling.
As a result, the property for the modification of lubricating oils product that the present embodiment obtains is as shown in table 3.
Table 3
Embodiment 3
The polymeric reaction condition that the present embodiment uses for：The dosage weight ratio of vinyl monomer, propylene monomer and n-hexane is
1：4：14；Using vanadium system Ziegler-Natta catalyst, the temperature of the first polymer reactor is 35 DEG C, pressure 0.8MPa, average
Residence time is 15min；The temperature of second polymer reactor is 45 DEG C, pressure 1.0MPa, mean residence time 15min.
Finally giving the EPM glue that concentration is 8 weight %, (number-average molecular weight of the EPM is 10.5 ten thousand, is divided
Son amount breadth coefficient is 1.8, and the content of propylene construction unit is 49 weight %, Mooney viscosity 47), and pure EPM
Production capacity be 20kg/h, with pump with 250kg/h flow by obtained EPM glue introduce with stirring lubrication
In oily Mixer pot, while also the lube base oil that flow is 370kg/h is sent into lubricating oil Mixer pot.At 62 DEG C, two
First EP rubbers glue stirs 41min with lube base oil in Mixer pot；Then the mixed solution of acquisition is used and reality
The identical distillation process of example 1 is applied to carry out desolventizing processing, is obtained through the modified modification of lubricating oils product of EPM,
And hexane solvent is subjected to refined rear recycling.
As a result, the property for the modification of lubricating oils product that the present embodiment obtains is as shown in table 4.
Table 4
Embodiment 4
The present embodiment is carried out using method similar to Example 1, except that：
Polymeric reaction condition in the present embodiment is：The dosage weight ratio of vinyl monomer, propylene monomer and n-hexane is 1：
4：10；Using vanadium system Ziegler-Natta catalyst, the temperature of the first polymer reactor is 30 DEG C, pressure 0.8MPa, is averagely stopped
It is 32min to stay the time；The temperature of second polymer reactor is 40 DEG C, pressure 1.0MPa, mean residence time 32min.Most
Obtaining the EPM glue that concentration is 15 weight % eventually, (number-average molecular weight of the EPM is 120,000, molecule
It is 2 to measure breadth coefficient, and the content of propylene construction unit is 52 weight %, Mooney viscosity 55).
Remaining is in the same manner as in Example 1.
As a result, the property for the modification of lubricating oils product that the present embodiment obtains is as shown in table 5.
Table 5
Embodiment 5
The present embodiment is carried out using method similar to Example 2, except that：
Polymeric reaction condition in the present embodiment is：The dosage weight ratio of vinyl monomer, propylene monomer and n-hexane is 1：
4：16；Using vanadium system Ziegler-Natta catalyst, the temperature of the first polymer reactor is 40 DEG C, pressure 0.8MPa, is averagely stopped
It is 11min to stay the time；The temperature of second polymer reactor is 50 DEG C, pressure 1.0MPa, mean residence time 11min.Most
Obtaining the EP rubbers glue that concentration is 5 weight % eventually, (number-average molecular weight of the EPM is 100,000, molecular weight distribution
Coefficient is 1.7, and the content of propylene construction unit is 48 weight %, Mooney viscosity 45).
Remaining is in the same manner as in Example 2.
As a result, the property for the modification of lubricating oils product that the present embodiment obtains is as shown in table 6.
Table 6
Embodiment 6
The present embodiment is carried out using method similar to Example 1, except that, the polymer solution in the present embodiment
For hydrogenated styrene-butadiene block polymer solution, specific preparation method is：(1) styrene monomer, divinylic monomer and
The dosage weight ratio of n-hexane is 1：1.5：10；Using lithium-based catalyst, the temperature of polymerisation is 90 DEG C, and reaction pressure is
0.5MPa, total reaction time of the material in polymer reactor are 100min, and Styrene-Butadiene block polymer is made.(2)
Obtained styrene-butadiene solution in (1) is subjected to hydrogenation reaction, using nickel catalyst, the temperature of hydrogenation reaction
Spend for 60 DEG C, reaction pressure 4.0MPa, total reaction time of the material in hydrogenation reactor is 80min, degree of hydrogenation 99%.
Finally give the hydrogenated styrene-butadiene block polymer solution that concentration is 20 weight %, the wherein hydrogenation of benzene
The number-average molecular weight of ethylene-butadiene block polymer is 60,000, and molecular weight distribution index 1.1, styrol structural unit contains
Measure as 35 weight %.
Remaining is in the same manner as in Example 1.
As a result, the property for the modification of lubricating oils product that the present embodiment obtains is as shown in table 7.
Table 7
Embodiment 7
The present embodiment is carried out using method similar to Example 1, except that, the polymer solution in the present embodiment
For hydrogenated styrene isoprene block polymer solution, specific preparation method is：(1) styrene monomer, isoprene list
The dosage weight ratio of body and n-hexane is 1：6：31.5；Using lithium-based catalyst, the temperature of polymerisation is 70 DEG C, reaction pressure
For 0.4MPa, total reaction time of the material in polymer reactor is 60min, and styrene-isoprene block polymer is made；
(2) obtained styrene-isoprene polymer solution in (1) is subjected to hydrogenation reaction, using nickel catalyst, hydrogenation reaction
Temperature be 70 DEG C, reaction pressure 3.0MPa, total reaction time of the material in hydrogenation reactor is 100min, and degree of hydrogenation is
97.5%.
Finally give the hydrogenated styrene isoprene block polymer solution that concentration is 18 weight %, the wherein hydrogenation
The number-average molecular weight of styrene-isoprene block polymer is 220,000, molecular weight distribution index 1.1, styryl structures list
The content of member is 30 weight %.
Remaining is in the same manner as in Example 1.
As a result, the property for the modification of lubricating oils product that the present embodiment obtains is as shown in table 8.
Table 8
Embodiment 8
The present embodiment is carried out using method similar to Example 2, except that：
The mixed weight of lube base oil described in the present embodiment and polymer solution ratio is 3.5：1, specifically, lubrication
The flow of oil base oil is 997.5kg/h.
Remaining is in the same manner as in Example 2.
As a result, the property for the modification of lubricating oils product that the present embodiment obtains is as shown in table 9.
Table 9
Comparative example 1
Using with similar weight in embodiment 1 than the pure EPM (rubber of binary second third in quality and embodiment 1
Glue is identical) mixed with lube base oil, specifically, in lubricating oil Mixer pot add 87.5kg lube base oil and
5kg pure EPM, and at 65 DEG C, stir 40min.
As a result, the property for the modification of lubricating oils product that this comparative example obtains is as shown in table 10.
Table 10
It can be seen that by the result of comparative example and comparative example and adopt the modification of lubricating oils being obtained by the present invention
Mobility in ultralow temperature, and tackifying in high temperature are significantly improved compared with prior art so that the present invention
Modification of lubricating oils there are excellent viscosity-temperature characteristics.
The preferred embodiment of the present invention described in detail above, still, the present invention are not limited in above-mentioned embodiment
Detail, in the range of the technology design of the present invention, a variety of simple variants can be carried out to technical scheme, this
A little simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should equally be considered as content disclosed in this invention.
Claims (11)
1. a kind of method of polymer modification lubricating oil, this method include：The polymer solution obtained after polymerisation is direct
Mixed with lube base oil, wherein, the polymer is selected from EP rubbers, hydrogenated styrene-butadiene block polymerization
At least one of thing and hydrogenated styrene isoprene block polymer.
2. according to the method for claim 1, wherein, the concentration of polymer is 5-25 weight % in the polymer solution；
Preferably,
The concentration of polymer is 7-20 weight % in the polymer solution.
3. method according to claim 1 or 2, wherein, the mixed weight of the lube base oil and polymer solution
Than for 0.3-5：1；Preferably 0.8-3.5：1.
4. according to the method described in any one in claim 1-3, wherein, the condition of the mixing includes：Temperature is 30-80
DEG C, time 20-60min.
5. according to the method described in any one in claim 1-4, wherein, the solvent in the polymerisation is C5-C10's
At least one of alkane or C5-C10 cycloalkane；Preferably,
Solvent in the polymerisation in pentane, isopentane, n-hexane, hexamethylene, normal heptane and normal octane extremely
Few one kind.
6. according to the method for claim 1, wherein, this method further comprises：By the polymer solution and the profit
The mixture that lubricant base oil obtains after being mixed is introduced into progress desolventizing processing in solvent recovery unit.
7. according to the method described in any one in claim 1-4, wherein, the EP rubbers is EPM, and
The number-average molecular weight of the EPM is 100,000~120,000, and molecular weight distribution index is 1.7~2.0, propylene structure list
The content of member is 48~52 weight %, and Mooney viscosity is 45~55；
The number-average molecular weight of the hydrogenated styrene-butadiene block polymer is 5.5 ten thousand~6.5 ten thousand, molecular weight distribution index
For 1.05~1.1, the content of styrol structural unit is 30~40 weight %, and degree of hydrogenation is 98~100%；
The number-average molecular weight of the hydrogenated styrene isoprene block polymer is 200,000~250,000, molecular weight distribution index
For 1.05~1.1, the content of styrol structural unit is 25~40 weight %, and degree of hydrogenation is 97~100%.
8. according to the method described in any one in claim 1-4 and 7, wherein, the polymer solution is the rubber of binary second third
Glue glue；The EPM glue is reacted by vinyl monomer and propylene monomer under the conditions of solution polymerization to be made.
9. according to the method for claim 8, wherein, the catalyst of the solution polymerization is vanadium system Z-N
Catalyst, the temperature of solution polymerization is 25-65 DEG C, and the pressure of solution polymerization is 0.15-1.5MPa, and material is reacting
Total residence time in device is 20-70min.
10. a kind of method of polymer modification lubricating oil, this method include：
(1) polymer solution is prepared：Under the polymerization conditions, the corresponding monomer for forming the polymer is polymerize, obtained
To polymer solution, the polymer be selected from EP rubbers, hydrogenated styrene-butadiene block polymer and hydrogenated styrene-
At least one of polyisoprene block polymers；
(2) polymer modification lubricating oil is prepared：The polymer solution that step (1) obtains directly is entered with lube base oil
Row mixing, obtains mixture；
(3) mixture that step (2) obtains is introduced into progress desolventizing processing in solvent recovery unit.
11. according to the method for claim 10, wherein, the polymer is EP rubbers；It is highly preferred that the polymer
For EPM.
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| CN109232913A (en) * | 2018-07-12 | 2019-01-18 | 廊坊市思丁生物科技发展有限公司 | EP rubbers-chitosan quaternary ammonium salt composite material preparation method and applications |
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| CN101434887A (en) * | 2007-11-17 | 2009-05-20 | 中国石油化工股份有限公司 | Lubricating oil viscosity index improver and preparation thereof |
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| CN101434887A (en) * | 2007-11-17 | 2009-05-20 | 中国石油化工股份有限公司 | Lubricating oil viscosity index improver and preparation thereof |
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