CN107099359A - The preparation method and its pour-point depressant of a kind of diesel pour inhibitor - Google Patents
The preparation method and its pour-point depressant of a kind of diesel pour inhibitor Download PDFInfo
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- CN107099359A CN107099359A CN201710301274.8A CN201710301274A CN107099359A CN 107099359 A CN107099359 A CN 107099359A CN 201710301274 A CN201710301274 A CN 201710301274A CN 107099359 A CN107099359 A CN 107099359A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L10/00—Use of additives to fuels or fires for particular purposes
- C10L10/14—Use of additives to fuels or fires for particular purposes for improving low temperature properties
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
- C10L1/18—Organic compounds containing oxygen
- C10L1/192—Macromolecular compounds
- C10L1/195—Macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C10L1/196—Macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds derived from monomers containing a carbon-to-carbon unsaturated bond and a carboxyl group or salts, anhydrides or esters thereof homo- or copolymers of compounds having one or more unsaturated aliphatic radicals each having one carbon bond to carbon double bond, and at least one being terminated by a carboxyl radical or of salts, anhydrides or esters thereof
- C10L1/1963—Macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds derived from monomers containing a carbon-to-carbon unsaturated bond and a carboxyl group or salts, anhydrides or esters thereof homo- or copolymers of compounds having one or more unsaturated aliphatic radicals each having one carbon bond to carbon double bond, and at least one being terminated by a carboxyl radical or of salts, anhydrides or esters thereof mono-carboxylic
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/24—Mixing, stirring of fuel components
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2300/00—Mixture of two or more additives covered by the same group of C10L1/00 - C10L1/308
- C10L2300/20—Mixture of two components
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- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Liquid Carbonaceous Fuels (AREA)
- Lubricants (AREA)
Abstract
The invention discloses a kind of preparation method of diesel pour inhibitor and its pour-point depressant, wherein, methods described comprises the following steps：1) add a solvent in reactor, plastic of poly vinyl acetate and polymethacrylates are added in reactor again, under conditions of stirring, carry out heating and reach 60~120 DEG C, pressure control is in 0.01~0.02MPa, dissolving reaction 1~6 hour, after reaction terminates, treat that pressure is down to 0MPa, obtain product at initial stage；2) product at initial stage obtained, under heat-retaining condition, shear treatment repeatedly is carried out by shearing equipment, until product at initial stage is under the conditions of 100 DEG C, kinematic viscosity reaches 30~200mm2/ s, stops shearing, obtains finished product；Above-mentioned preparation method only needs simply dissolving and shearing step, makes simple, with low cost, and the pour-point depressant prepared by this method has the advantages that depression effeCt is good.
Description
Technical field
The present invention discloses the technical field for being related to petrochemical industry, more particularly to a kind of diesel pour inhibitor preparation method and its
Pour-point depressant.
Background technology
When oil plant carries out diesel oil refining, the height of measuring change of diesel oil solidifying point can influence the final trade mark of diesel oil, and different boards
Number diesel-fuel price differ greatly, in refining process, often occur that the freezing point of diesel oil is hovered between two trades mark, this
When, the freezing point of diesel oil will be adjusted by the way of pour-point depressant is added, to the requirement that touches the mark.
At present, the conventional diesel pour inhibitor of in the market has ten as many as several, but most pour-point depressant is required for using high temperature
The mode of high pressure is processed preparation, and the requirement to processing is more harsh, there are processing difficulties, the problems such as cost is high.
Therefore, a kind of preparation method of novel diesel pour-point depressant how is researched and developed, to solve the above problems, as people urgently
The problem of solution.
The content of the invention
In consideration of it, it is an object of the invention to provide a kind of preparation method of diesel pour inhibitor and its pour-point depressant, with least
The problems such as there are processing difficulties, high processing costs in the preparation method for solving existing diesel pour inhibitor.
The technical scheme that the present invention is provided, specifically, a kind of preparation method of diesel pour inhibitor, comprises the following steps：
1) after adding a solvent in reactor, then plastic of poly vinyl acetate and polymethacrylates are regard as solute
It is added in reactor, under conditions of stirring, the material in reactor is heated up, until temperature reaches 60~120 DEG C,
By the pressure control of reactor in 0.01~0.02MPa, dissolving reaction is carried out, the dissolving reaction time is 1~6 hour, and dissolving is anti-
After should terminating, pressure is down to 0MPa in question response kettle, obtains product at initial stage；
2) by step 1) in obtained product at initial stage, under heat-retaining condition, product at initial stage is carried out by shearing equipment anti-
Multiple shear treatment, until the product at initial stage, under the conditions of 100 DEG C, kinematic viscosity reaches 30~200mm2/ s, stops shearing, obtains
Obtain pour-point depressant finished product.
It is preferred that, the solvent be toluene, dimethylbenzene, trimethylbenzene, durene, the isomer of toluene, dimethylbenzene it is same
One or more of mixing in the isomer of enantiomers, the isomer of trimethylbenzene and durene.
Further preferably, the solvent is that under the conditions of 40 DEG C, kinematic viscosity is 5~20mm2/ s cycloalkane.
Further preferably, the mass ratio of the solvent and solute is (0.5~1.5)：1.
Further preferably, the mass ratio of the plastic of poly vinyl acetate and the polymethacrylates is 1：(0.1~
1)。
Further preferably, the molecular weight of the plastic of poly vinyl acetate is 2000~15000g/mol, vinylacetate
Content is 10~50%.
Further preferably, the molecular weight of the polymethacrylates is 1000~11000g/mol.
Further preferably, the polymethacrylates is methyl esters, ethyl ester, butyl ester one kind therein of polymethylacrylic acid
Or several mixing.
Further preferably, the shearing equipment is gear pump or colloid mill.
Present invention also offers a kind of diesel pour inhibitor, the pour-point depressant is to be prepared using any one above-mentioned method.
The preparation method for the diesel pour inhibitor that the present invention is provided, due to plastic of poly vinyl acetate and polymethacrylates
All there is electric nuclear repulsion characteristic between molecule, can effectively prevent wax molecule from assembling, can reach the purpose of reduction measuring change of diesel oil solidifying point, because
This is solute from plastic of poly vinyl acetate and polymethacrylates, and above-mentioned solute and solvent are carried out after mixed dissolution,
Sheared by shearing equipment, plastic of poly vinyl acetate and polymethacrylates are cut into small-molecular-weight, Jin Ersheng
Into more nucleus, after being mixed as pour-point depressant with diesel oil, plastic of poly vinyl acetate and polymethacrylates are by cutting
The numerous nucleus generated after cutting can attract the wax dissociated in diesel oil, free wax is separated each other, prevent free wax from condensing upon
Net is formed together, and then avoids the solidification of diesel oil.
The preparation method for the diesel pour inhibitor that the present invention is provided, it is only necessary to simply dissolving and shearing step, makes letter
It is single, it is with low cost, and also the pour-point depressant prepared by this method has the advantages that depression effeCt is good.
Embodiment
Explanation is further explained to the present invention with specific embodiment below, but is not limited to this hair
Bright protection domain.
In order to solve the preparation method of conventional diesel pour inhibitor there are problems that processing difficulties, the present invention
There is provided a kind of preparation method of novel diesel pour-point depressant, the preparation method specifically includes following steps：
1) after adding a solvent in reactor, then plastic of poly vinyl acetate and polymethacrylates are regard as solute
It is added in reactor, under conditions of stirring, the material in reactor is heated up, until temperature reaches 60~120 DEG C,
By the pressure control of reactor in 0.01~0.02MPa, dissolving reaction is carried out, the dissolving reaction time is 1~6 hour, and dissolving is anti-
After should terminating, pressure is down to 0MPa in question response kettle, obtains product at initial stage；
2) by step 1) in obtained product at initial stage, under heat-retaining condition, product at initial stage is carried out by shearing equipment anti-
Multiple shear treatment, until the product at initial stage, under the conditions of 100 DEG C, kinematic viscosity reaches 30~200mm2/ s, stops shearing, obtains
Obtain pour-point depressant finished product.
In the preparation method, because plastic of poly vinyl acetate and polymethacrylates all have electric core row between molecule
Denounce characteristic, can effectively prevent wax molecule from assembling, reach the purpose of reduction measuring change of diesel oil solidifying point, therefore select both as solute, its
In, it is 60~120 DEG C by temperature setting, is 0.01~0.02MPa by pressure control, main reason is that：If temperature is less than
60 DEG C, the dissolution velocity of solute is slow, causes manufacturing cycle to extend, and temperature is higher than 120 DEG C, and solvent volatilization can be caused more,
Pressure is larger in dissolving tank, there is potential safety hazard.Plastic of poly vinyl acetate and polymethacrylates are dissolved in after solvent,
Initial stage product；Under heat-retaining condition, shear treatment repeatedly is carried out to product at initial stage by shearing equipment, until at 100 DEG C
Under the conditions of, kinematic viscosity reaches 30~200mm2/ s, by the requirement to product viscosity after shearing, main purpose is that control is cut
The molecular weight of plastic of poly vinyl acetate and polymethacrylates after cutting so that there is substantial amounts of crystalline substance in the pour-point depressant of preparation
Core, after the pour-point depressant is mixed with diesel oil, numerous nucleus in pour-point depressant can attract in diesel oil dissociate wax, make free wax that
This separation, prevents free wax formation net agglomerated together, and then avoid the solidification of diesel oil.
Solvent in the embodiment above can select toluene, dimethylbenzene, trimethylbenzene, durene, the isomer of toluene,
One or more in the isomer of the isomer of dimethylbenzene, the isomer of trimethylbenzene and durene are mixed
Close, solvent is made from above-mentioned benzene class, main reason is that its solvability is strong, the intersolubility between solute can be improved.
In addition, the solvent in the embodiment above can also be selected under the conditions of 40 DEG C, kinematic viscosity is 5~20mm2/s
Cycloalkane, its intersolubility with solute is considered not only using cycloalkane, and because the flash-point of cycloalkane is higher than aromatic hydrocarbons, tool
Have the advantages that security is good.
In order to improve the performance using the pour-point depressant prepared in the embodiment above, the improvement of scheme is used as, it is preferable that
The mass ratio of above-mentioned solvent and solute is (0.5~1.5)：1；More preferably, plastic of poly vinyl acetate and polymethylacrylic acid
The mass ratio of ester is 1：(0.1~1).
Wherein, the plastic of poly vinyl acetate preferred molecular weight in solute is 2000~15000g/mol, vinylacetate
Content is 10~50%, test proves that the molecular weight ranges, and vinyl acetate content is in the polyethylene vinegar of this scope
Vinyl acetate, the depression effeCt for the pour-point depressant being made is best；And in solute polymethacrylates preferred molecular weight be 1000~
11000g/mol, if polymethacrylates of the molecular weight less than 1000g/mol is without depression effeCt, molecular weight is higher than
11000g/mol polymethacrylates is in solid state, also improper to be used to produce pour-point depressant.
Above-mentioned polymethacrylates can be methyl esters, ethyl ester, the butyl ester one or more therein of polymethylacrylic acid
Mixing.
The step 2 of above-mentioned preparation method) the middle equipment for carrying out plastic of poly vinyl acetate and polymethacrylates shearing
Gear pump or colloid mill can be selected, it is not limited to above two equipment.
The present invention is further illustrated with specific embodiment below.
Embodiment 1
Take after 4 parts by weight pseudocumenes are added in reactor, then by 4 weight account polyethylene vinylacetates and 4 weight
Part polymethacrylates is added in reactor as solute, and under conditions of stirring, the material in reactor is risen
Temperature, until temperature reaches 60~120 DEG C, by the pressure control of reactor in 0.01~0.02MPa, carries out dissolving reaction, dissolving
Reaction time is 1~6 hour, and after dissolving reaction terminates, pressure is down to 0MPa in question response kettle, obtains product at initial stage；It will obtain
Product at initial stage, under heat-retaining conditions, shear treatment 10 hours repeatedly are carried out to product at initial stage by gear pump, stop shearing,
Obtain pour-point depressant finished product.
Pour-point depressant finished product is under the conditions of temperature is 100 DEG C, and detection kinematic viscosity is 120.38mm2/s。
It is -9 DEG C to take freezing point, and cold filter plugging point is -3.5 DEG C of diesel oil, adds above-mentioned pour-point depressant 300ppm, measures addition pour point depression
The freezing point of diesel oil is -21 DEG C after agent, and cold filter plugging point is -12 DEG C.
Embodiment 2
Take after 1.1 parts by weight of toluene and 2.2 parts by weight ortho-xylenes are added in reactor, then by 2 weight account polyethylenes
Vinylacetate and 0.2 parts by weight polymethacrylates are added in reactor as solute, under conditions of stirring, to anti-
Answer the material in kettle to be heated up, until temperature reaches 60~120 DEG C, the pressure of reactor controlled in 0.01~0.02MPa,
Dissolving reaction is carried out, the dissolving reaction time is 1~6 hour, and after dissolving reaction terminates, pressure is down to 0MPa in question response kettle, obtains
To product at initial stage；By obtained product at initial stage, under heat-retaining condition, shear treatment repeatedly is carried out to product at initial stage by colloid mill
16 hours, stop shearing, obtain pour-point depressant finished product.
Pour-point depressant finished product is under the conditions of temperature is 100 DEG C, and detection kinematic viscosity is 109.73mm2/s。
It is -9 DEG C to take freezing point, and cold filter plugging point is -3.5 DEG C of diesel oil, adds above-mentioned pour-point depressant 300ppm, measures addition pour point depression
The freezing point of diesel oil is -20 DEG C after agent.Cold filter plugging point is -10.5 DEG C.
Embodiment 3
6 parts by weight are taken under the conditions of 40 DEG C, kinematic viscosity is 5~20mm2After/s cycloalkane is added in reactor, then
4 weight account polyethylene vinylacetates and 2 parts by weight polymethacrylates are added in reactor as solute, in stirring
Under conditions of, the material in reactor is heated up, until temperature reaches 60~120 DEG C, the pressure control of reactor existed
0.01~0.02MPa, carries out dissolving reaction, and the dissolving reaction time is 1~6 hour, after dissolving reaction terminates, question response kettle internal pressure
0MPa is down to by force, product at initial stage is obtained；By obtained product at initial stage, under heat-retaining condition, product at initial stage is entered by gear pump
Row shear treatment 12 hours, stopping shearing repeatedly, obtains pour-point depressant finished product.
Pour-point depressant finished product is under the conditions of temperature is 100 DEG C, and detection kinematic viscosity is 163.96mm2/s。
It is -9 DEG C to take freezing point, and cold filter plugging point is -3.5 DEG C of diesel oil, adds above-mentioned pour-point depressant 300ppm, measures addition pour point depression
The freezing point of diesel oil is -25 DEG C after agent, and cold filter plugging point is -14 DEG C.
Embodiment 4
Two groups of effect experiments are carried out respectively, it is specific as follows：
First group：The pour-point depressant prepared in Example 3 be added separately to light diesel, heavy diesel, modification diesel oil with
And in mixed diesel, and measurement adds the forward and backward corresponding freezing point temperature of pour-point depressant respectively；
Second group：Take market available diesel oil pour-point depressant T1804 be added separately to light diesel, heavy diesel, modification diesel oil and
In mixed diesel, and measurement adds the forward and backward corresponding freezing point temperature of pour-point depressant respectively.
By the experimental data of above-mentioned two groups of experiments, 1 is shown in Table：
Table 1
From table 1 it was found from the pour point depression date comprision of two groups of experiments, the diesel pour inhibitor in embodiment 3, depression effeCt
It is good, and wide adaptability.
Those skilled in the art will readily occur to its of the present invention after considering specification and putting into practice invention disclosed herein
Its embodiment.The application be intended to the present invention any modification, purposes or adaptations, these modifications, purposes or
Person's adaptations follow the general principle of the present invention and including undocumented common knowledge in the art of the invention
Or conventional techniques.Description and embodiments are considered only as exemplary, and true scope and spirit of the invention are by following
Claim is pointed out.
It should be appreciated that the invention is not limited in the precision architecture being described above, and can not depart from
Its scope carries out various modifications and changes.The scope of the present invention is only limited by appended claim.
Claims (10)
1. a kind of preparation method of diesel pour inhibitor, it is characterised in that comprise the following steps：
1) after adding a solvent in reactor, then plastic of poly vinyl acetate and polymethacrylates added as solute
Into reactor, under conditions of stirring, the material in reactor is heated up, until temperature reaches 60~120 DEG C, will be anti-
Answer the pressure of kettle to control in 0.01~0.02MPa, carry out dissolving reaction, the dissolving reaction time is 1~6 hour, dissolving reaction knot
Pressure is down to 0MPa in Shu Hou, question response kettle, obtains product at initial stage；
2) by step 1) in obtained product at initial stage, under heat-retaining condition, product at initial stage is cut repeatedly by shearing equipment
Processing is cut, until the product at initial stage, under the conditions of 100 DEG C, kinematic viscosity reaches 30~200mm2/ s, stops shearing, is dropped
Solidifying agent finished product.
2. the preparation method of diesel pour inhibitor according to claim 1, it is characterised in that the solvent be toluene, dimethylbenzene,
Trimethylbenzene, durene, the isomer of toluene, the isomer of dimethylbenzene, the isomer and tetramethyl of trimethylbenzene
One or more of mixing in the isomer of benzene.
3. the preparation method of diesel pour inhibitor according to claim 1, it is characterised in that the solvent is in 40 DEG C of conditions
Under, kinematic viscosity is 5~20mm2/ s cycloalkane.
4. the preparation method of diesel pour inhibitor according to claim 1, it is characterised in that the mass ratio of the solvent and solute
For (0.5~1.5)：1.
5. the preparation method of diesel pour inhibitor according to claim 1, it is characterised in that the plastic of poly vinyl acetate with
The mass ratio of the polymethacrylates is 1：(0.1~1).
6. the preparation method of diesel pour inhibitor according to claim 1, it is characterised in that the plastic of poly vinyl acetate
Molecular weight is 2000~15000g/mol, and vinyl acetate content is 10~50%.
7. the preparation method of diesel pour inhibitor according to claim 1, it is characterised in that point of the polymethacrylates
Son amount is 1000~11000g/mol.
8. the preparation method of diesel pour inhibitor according to claim 1, it is characterised in that the polymethacrylates is poly-
Methyl esters, ethyl ester, butyl ester one or more of mixing therein of methacrylic acid.
9. the preparation method of diesel pour inhibitor according to claim 1, it is characterised in that the shearing equipment be gear pump or
Colloid mill.
10. a kind of diesel pour inhibitor, it is characterised in that the pour-point depressant is using any one method system in claim 1~9
It is standby to obtain.
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| CN201710301274.8A CN107099359B (en) | 2017-05-02 | 2017-05-02 | A kind of preparation method and its pour-point depressant of diesel pour inhibitor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107964433A (en) * | 2017-12-12 | 2018-04-27 | 天津大远科技有限公司 | A kind of diesel pour inhibitor and preparation method thereof |
| CN113201372A (en) * | 2021-04-27 | 2021-08-03 | 上海应用技术大学 | Naphthalene-containing diesel pour point depressant composition and preparation and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1111655A (en) * | 1993-08-02 | 1995-11-15 | Dsm共聚物公司 | Solid sheared polymer blends and process for their preparation |
| US5554200A (en) * | 1992-06-30 | 1996-09-10 | Exxon Chemical Patents Inc | Oil additives and compositions |
| CN105969433A (en) * | 2016-05-23 | 2016-09-28 | 上海应用技术学院 | Nano compound pour point depressant and preparation method thereof |
-
2017
- 2017-05-02 CN CN201710301274.8A patent/CN107099359B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5554200A (en) * | 1992-06-30 | 1996-09-10 | Exxon Chemical Patents Inc | Oil additives and compositions |
| CN1111655A (en) * | 1993-08-02 | 1995-11-15 | Dsm共聚物公司 | Solid sheared polymer blends and process for their preparation |
| CN105969433A (en) * | 2016-05-23 | 2016-09-28 | 上海应用技术学院 | Nano compound pour point depressant and preparation method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107964433A (en) * | 2017-12-12 | 2018-04-27 | 天津大远科技有限公司 | A kind of diesel pour inhibitor and preparation method thereof |
| CN113201372A (en) * | 2021-04-27 | 2021-08-03 | 上海应用技术大学 | Naphthalene-containing diesel pour point depressant composition and preparation and application thereof |
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| Publication number | Publication date |
|---|---|
| CN107099359B (en) | 2018-10-12 |
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