CN115926870A - Lubricating oil pour point depressant and preparation method thereof - Google Patents
Lubricating oil pour point depressant and preparation method thereof Download PDFInfo
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- CN115926870A CN115926870A CN202211415315.3A CN202211415315A CN115926870A CN 115926870 A CN115926870 A CN 115926870A CN 202211415315 A CN202211415315 A CN 202211415315A CN 115926870 A CN115926870 A CN 115926870A
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- solution
- pour point
- point depressant
- lubricating oil
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- 239000010687 lubricating oil Substances 0.000 title claims abstract description 44
- 230000000994 depressogenic effect Effects 0.000 title claims abstract description 43
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims abstract description 42
- 238000010438 heat treatment Methods 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 claims abstract description 16
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000000194 fatty acid Substances 0.000 claims abstract description 11
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims abstract description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000001530 fumaric acid Substances 0.000 claims abstract description 8
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000003999 initiator Substances 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 239000004342 Benzoyl peroxide Substances 0.000 claims abstract description 6
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 claims abstract description 6
- 235000019400 benzoyl peroxide Nutrition 0.000 claims abstract description 6
- LBLYYCQCTBFVLH-UHFFFAOYSA-N 2-Methylbenzenesulfonic acid Chemical compound CC1=CC=CC=C1S(O)(=O)=O LBLYYCQCTBFVLH-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000003054 catalyst Substances 0.000 claims abstract description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 4
- 239000000243 solution Substances 0.000 claims description 68
- 239000007788 liquid Substances 0.000 claims description 16
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 238000003860 storage Methods 0.000 claims description 9
- 238000001802 infusion Methods 0.000 claims description 8
- 239000007789 gas Substances 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 238000001704 evaporation Methods 0.000 claims description 3
- 239000012065 filter cake Substances 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 238000000967 suction filtration Methods 0.000 claims description 3
- 238000001291 vacuum drying Methods 0.000 claims description 3
- 150000002148 esters Chemical class 0.000 claims description 2
- 230000007935 neutral effect Effects 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 3
- 239000000654 additive Substances 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 description 6
- 238000007789 sealing Methods 0.000 description 6
- 238000003756 stirring Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 239000011550 stock solution Substances 0.000 description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The invention belongs to the technical field of lubricating oil additives, and particularly relates to a lubricating oil pour point depressant and a preparation method thereof; the method comprises the following steps: the method comprises the following steps: adding pentaerythritol di-fatty acid ester, fumaric acid, a catalyst and toluene into a solution bottle, shaking the container in a constant-temperature water bath at 60 ℃ to dissolve the pentaerythritol di-fatty acid ester, and introducing nitrogen for 30-60 min; step two: heating the solution prepared in the first step to 80-85 ℃, dropwise adding acrylamide, and dropwise adding a toluene solution of an initiator benzoyl peroxide; the lubricating oil pour point depressant prepared by the preparation method of the lubricating oil pour point depressant comprises the following components: pentaerythritol di-fatty acid ester, fumaric acid, toluenesulfonic acid, toluene and acrylamide; the cavity structure through sliding keeps in and puts in a small amount of solution, the dropwise add of control solution to can be according to the reciprocal speed that slides of cavity structure, to the adjustment of solution dropwise add speed, increase the solution dropwise add stable effect in the lubricating oil pour point depressant production process.
Description
Technical Field
The invention belongs to the technical field of lubricating oil additives, and particularly relates to a lubricating oil pour point depressant and a preparation method thereof.
Background
In the using process of the lubricating oil, the wide working temperature is required to be adapted, so that the using performance of the lubricating oil is ensured, the pour point depressant is required to reduce the freezing point of the lubricating oil, the cold start of an engine is ensured to be smooth, and the trouble caused by driving and storage and transportation due to sudden temperature drop and regional driving is effectively solved;
in the preparation process of the pour point depressant for lubricating oil, raw materials such as an initiator and the like need to be added into an intermediate product such as methacrylic acid mixed ester in a dropwise manner for water bath heating treatment, so that the dropwise adding speed of the solution needs to be maintained, and the production of the pour point depressant is effectively controlled.
Disclosure of Invention
In order to achieve the purpose of increasing the solution dripping stabilizing effect in the production process of the pour point depressant for lubricating oil, the invention adopts the following technical scheme:
the invention aims to provide a scheme for temporarily storing and putting a small amount of solution through a sliding cavity structure, controlling the dropping of the solution, and adjusting the dropping speed of the solution according to the reciprocating sliding speed of the cavity structure.
In order to achieve the above object, the present invention provides a method for preparing a pour point depressant for lubricating oil, comprising the steps of:
the method comprises the following steps: adding pentaerythritol di-fatty acid ester, fumaric acid, a catalyst and toluene into a solution bottle, shaking the container in a constant-temperature water bath at 60 ℃ to dissolve the pentaerythritol di-fatty acid ester, and introducing nitrogen for 30-60 min;
step two: heating the solution prepared in the first step to 80-85 ℃, dropwise adding acrylamide, and dropwise adding a toluene solution of an initiator benzoyl peroxide;
step three: after reacting for 7 hours at constant temperature, evaporating the solvent at 50 ℃ under reduced pressure to obtain a solution a;
step four: and (3) removing the solution a, washing the solution a to the pH value of 8 by using a 5% NaOH aqueous solution, washing the solution a to neutrality by using deionized water, performing suction filtration, and performing vacuum drying on a filter cake for 24 hours at the temperature of 80 ℃ to obtain the lubricating oil pour point depressant.
The solution bottle is provided with a gas inlet pipe, a steam discharge pipe and a plurality of infusion pipes, and the infusion pipes are provided with drip droppers for controlling the dripping speed of the solution.
The lubricating oil pour point depressant prepared by the preparation method of the lubricating oil pour point depressant comprises the following components: pentaerythritol di-fatty acid ester, fumaric acid, toluenesulfonic acid, toluene and acrylamide.
The lubricant pour point depressant has good pour point depressant effect on various types of lubricant, wide working temperature range, stable performance and high industrial application value.
Drawings
The following drawings are only intended to illustrate and explain the invention schematically, wherein:
FIG. 1 is a process flow diagram of a method of preparing a pour point depressant for lubricating oils of the present invention;
FIG. 2 is a schematic diagram of the material composition of the pour point depressant for lubricating oils of the present invention;
FIG. 3 is a schematic view showing the structure of a solution bottle and a gas inlet pipe according to the present invention;
FIG. 4 is a schematic view of the construction of the tray, the positioning boss and the L-shaped clamp arm of the present invention;
FIG. 5 is a schematic view of the structure of the solution bottle, the annular sleeve and the stirring paddle of the present invention;
FIG. 6 is a schematic view of the rubber sleeve, infusion tube and collection trough of the present invention;
FIG. 7 is a schematic view of the construction of the tray, L-clamp arm and communication ring of the present invention;
fig. 8 is a schematic structural view of the infusion tube, the translator and the piston holder of the present invention;
FIG. 9 is a schematic structural view of the communicating ring, the liquid storage box, the base II and the positioning seat of the present invention;
FIG. 10 is a schematic view of the structure of the communicating ring, the liquid storage box and the communicating pipe of the present invention;
FIG. 11 is a schematic view of the structure of the base II, the second telescopic driver and the transfer device of the present invention;
FIG. 12 is a schematic view of the structure of the diverter, the extended seal end and the pin of the present invention;
FIG. 13 is a schematic view of the construction of the annular sleeve of the present invention;
fig. 14 is a schematic view of the structure of the heating container, the stopper bar and the driving groove arm according to the present invention.
In the figure: a solution bottle 1.1; 1.2 of a rubber sleeve; a gas inlet pipe 1.3; an infusion tube 1.4; a steam discharge pipe 1.5; collecting tank 1.6; a tray frame 2.1; a positioning bulge 2.2; an L-shaped clamping arm 2.3; heating the container 3; 3.1 of a limiting strip; a drive slot arm 3.2; a first telescopic drive 3.3; an annular sleeve 4.1; 4.2 of a stirring paddle; a base I5.1; a communication ring 5.2; a liquid storage box 5.3; the communicating pipe 5.4; a base II 6.1; a second telescopic drive 6.2; a diverter 7.1; the sealed end 7.2 is extended; 7.3 of a pin shaft; positioning seat 8.1; extending out of the control arc plate 8.2; and a piston frame 8.3.
Detailed Description
In order to achieve the purpose of increasing the solution dripping effect in the production process of the lubricating oil pour point depressant, the invention provides a preparation method of the lubricating oil pour point depressant, which comprises the following steps:
the method comprises the following steps: adding pentaerythritol di-fatty acid ester, fumaric acid, a catalyst and toluene into a solution bottle 1.1, shaking the container in a constant-temperature water bath at 60 ℃ to dissolve the pentaerythritol di-fatty acid ester, and introducing nitrogen for 30-60 min;
step two: heating the solution prepared in the first step to 80-85 ℃, dropwise adding acrylamide, and dropwise adding a toluene solution of an initiator benzoyl peroxide;
step three: after reacting for 7 hours at constant temperature, evaporating the solvent at 50 ℃ under reduced pressure to obtain a solution a;
step four: and removing the solution a, washing the solution a to the pH value of 8 by using a 5% NaOH aqueous solution, washing the solution a to be neutral by using deionized water, performing suction filtration, and performing vacuum drying on a filter cake at the temperature of 80 ℃ for 24 hours to obtain the lubricating oil pour point depressant.
Wherein the dropping speed of the toluene solution of the initiator benzoyl peroxide is 0.5 drops per second.
The lubricating oil pour point depressant prepared by the preparation method of the lubricating oil pour point depressant comprises the following components: taking 3 parts of pentaerythritol di-fatty acid ester, 3.6-4.3 parts of fumaric acid, 0.6-1 part of toluenesulfonic acid, 0.3-1.5 parts of toluene and 6-10 parts of acrylamide according to parts by mass.
Specific examples of the present invention will be described below.
Referring to FIGS. 3 to 7 and 14, in the embodiment of the method for producing a pour point depressant for lubricating oil according to the present invention, a solution bottle 1.1 is set up on a heating vessel 3 and heated in a water bath:
the top of the solution bottle 1.1 is provided with a gas inlet pipe 1.3 through a sealing plug, the gas inlet pipe 1.3 penetrates through the middle part of the sealing plug and extends into the middle part of the solution bottle 1.1, and two ends of the side part at the upper end of the solution bottle 1.1 are respectively provided with a steam discharge pipe 1.5 and a plurality of infusion pipes 1.4 in an inserting way.
The solution bottle 1.1 is installed on the tray frame 2.1 through two L-shaped clamping arms 2.3, the two L-shaped clamping arms 2.3 are locked and fixed through fasteners, the dripper is installed on the upper side of the tray frame 2.1, the tray frame 2.1 is detachably embedded and installed on the annular sleeve 4.1, the annular sleeve 4.1 is rotatably installed on the upper side of the heating container 3, the solution bottle 1.1 is erected in a water bath medium in the heating container 3, and at least two groups of solution bottle 1.1 and tray frame 2.1 components can be erected on the upper side of the heating container 3 at the same time.
Wherein, the middle part outside solution bottle 1.1 is provided with rubber sleeve 1.2, makes the L type centre gripping arm 2.3 of both sides under to solution bottle 1.1 centre gripping state, can not cause the damage to solution bottle 1.1.
Two limiting strips 3.1 are installed on the heating container 3, the annular sleeve 4.1 is rotatably installed between the two limiting strips 3.1, the solution bottle 1.1 is installed at the eccentric position of the tray frame 2.1, and the solution bottle 1.1 is driven to rock by controlling the rotation of the annular sleeve 4.1, so that the solution raw materials in the solution bottle 1.1 are mixed and processed.
The tip of steam discharge pipe 1.5 is provided with collecting vat 1.6, and collecting vat 1.6 is installed in plate rail 2.1 upside through the fastener, and steam discharge pipe 1.5 is located the upper end position of collecting vat 1.6 lateral part in collecting vat 1.6's intercommunication position, still is provided with the blast pipe on the collecting vat 1.6, is provided with the valve on the blast pipe.
Referring to FIGS. 5 and 7 to 10, examples of the method for producing a pour point depressant for lubricating oils according to the present invention, in which the dropping treatment of the solution raw material is controlled, are illustrated:
the steam discharge pipe 1.5 and a plurality of transfusion pipes 1.4, the transfusion pipe 1.4 is provided with a dropping device for controlling the dropping speed of the solution.
The main part of drip ware is the connectivity ring 5.2, and connectivity ring 5.2 installs on plate rail 2.1 through I5.1 on the base, and I5.1 on the plate rail 2.1 upside of base through flange structure, and there is stock solution box 5.3 in connectivity ring 5.2 inboard through the support mounting, and stock solution box 5.3 lower extreme is provided with communicating pipe 5.4, and connectivity ring 5.2 is inboard in arranging in to communicating pipe 5.4.
A sealing plug is arranged on the liquid storage box 5.3, the sealing plug is opened, and the liquid storage box 5.3 is filled with the solution raw materials; a plurality of communicating rings 5.2 are arranged on the base I5.1 so as to respectively drop a plurality of solution raw materials.
The downside of intercommunication ring 5.2 is provided with solution and puts in the mouth, and the rotation is installed in intercommunication ring 5.2 has translator 7.1, and slidable mounting has piston frame 8.3 on translator 7.1, and piston frame 8.3 and translator 7.1 constitute the cavity, and the department's exhaust solution is deposited temporarily to communicating pipe 5.4, later moves to solution through the cavity in translator 7.1 and puts in mouthful department and put in, accomplishes the dropwise add control of solution raw materials.
Wherein, the cylinder diameter of the lower end of the piston frame 8.3 is smaller than the inner diameter of the infusion tube 1.4, thereby increasing the stability of the solution drops.
Referring to fig. 9-10, an example of the method for preparing the pour point depressant for lubricating oil according to the present invention is illustrated, wherein the sliding state of the piston frame 8.3 in the transfer device 7.1 is controlled:
the communicating ring 5.2 is provided with a positioning seat 8.1 used for limiting the transfer device 7.1 through a fastening piece, and the positioning seat 8.1 is fixedly connected with an extending control arc plate 8.2 used for controlling the sliding state of the piston frame 8.3 in the transfer device 7.1 in a welding way.
Piston frame 8.3 sliding connection and card are on stretching out control arc board 8.2, at translator 7.1 at the intercommunication ring 5.2 in-process that slides, stretch out control arc board 8.2 and can drive piston frame 8.3 and carry out reciprocating sliding on translator 7.1, realize the suction and the operation of input to solution.
Wherein, the translator 7.1 is provided with an extension sealing end 7.2, and the piston frame 8.3 slides in the extension sealing end 7.2 to prevent the solution leakage.
Referring to fig. 9-12, an embodiment of the method for preparing the pour point depressant for lubricating oil according to the present invention is illustrated, wherein the position of the transfer device 7.1 on the communicating ring 5.2 is controlled:
base II 6.1 is installed to the upside in disk rack 2.1, installs the flexible driver 6.2 of second on base II 6.1, and the stiff end of the flexible driver 6.2 of second rotates with base II 6.1 to be connected, and the loose end of the flexible driver 6.2 of second rotates with round pin axle 7.3 on the translator 7.1 to be connected.
The flexible driver in this application can select to use electric telescopic link or pneumatic cylinder, starts the flexible driver 6.2 of second, controls the position of translator 7.1 on intercommunication ring 5.2, changes the dropping liquid frequency.
Referring to FIGS. 3-7 and FIGS. 13-14, examples of increasing the diffusion rate of the water bath medium during the warming operation according to the method for preparing a pour point depressant for lubricating oils of the present invention are illustrated:
the periphery of the upper side of the annular sleeve 4.1 is provided with a groove, the periphery of the lower side of the plate rack 2.1 is provided with a positioning bulge 2.2, and the groove is connected with the positioning bulge 2.2 in an embedded mode.
The side of the lower end of the annular sleeve 4.1 is welded and fixedly connected with a plurality of stirring paddles 4.2, and the reciprocating rotation of the annular sleeve 4.1 is utilized to drive the stirring paddles 4.2 to stir the water bath medium in the heating container 3, so that the solution bottle 1.1 can increase the diffusion speed of the water bath medium during the heating operation while shaking.
Referring to fig. 14, an example of the rotational driving of the ring-shaped sleeve 4.1 on the heating container 3 according to the method for preparing the pour point depressant for lubricating oil of the present invention is illustrated:
an electric heating rod is arranged in the heating container 3 to provide water bath heating temperature, and a liquid filling pipe is further arranged on the side part of the heating container 3 to supplement a water bath medium into the heating container 3.
Fixedly connected with round bar is welded on annular cover 4.1, and 3 upside slidable mounting of heating vessel has drive groove arm 3.2, and in round bar slidable connection's the spout on drive groove arm 3.2, install the first flexible driver 3.3 that is used for driving drive groove arm 3.2 and removes on the heating vessel 3.
The first telescopic driver 3.3 is started to be telescopic, so that the disc racks 2.1 on two sides are driven to rotate at the same time, and the diffusion speed of the water bath medium during the temperature rising operation is increased while the solution bottle 1.1 shakes.
In the process, the driving groove arm 3.2 limits the disc frame 2.1, so that the disc frame 2.1 is firmly buckled on the annular sleeve 4.1.
Claims (10)
1. A preparation method of a pour point depressant for lubricating oil is characterized by comprising the following steps:
the method comprises the following steps: adding pentaerythritol di-fatty acid ester, fumaric acid, a catalyst and toluene into a solution bottle (1.1), shaking the container in a constant-temperature water bath at 60 ℃ to dissolve the pentaerythritol di-fatty acid ester, and introducing nitrogen for 30-60 min;
step two: heating the solution prepared in the first step to 80-85 ℃, dropwise adding acrylamide, and dropwise adding a toluene solution of an initiator benzoyl peroxide;
step three: after reacting for 7 hours at constant temperature, evaporating the solvent at 50 ℃ under reduced pressure to obtain a solution a;
step four: and removing the solution a, washing the solution a to the pH value of 8 by using a 5% NaOH aqueous solution, washing the solution a to be neutral by using deionized water, performing suction filtration, and performing vacuum drying on a filter cake at the temperature of 80 ℃ for 24 hours to obtain the lubricating oil pour point depressant.
2. The method for preparing a pour point depressant for lubricating oils according to claim 1, wherein: the dropping speed of the toluene solution of the initiator benzoyl peroxide is 0.5 drops per second.
3. The method for producing a pour point depressant for lubricating oils according to claim 2 or 1, characterized in that: the liquid bottle (1.1) is provided with a gas inlet pipe (1.3), a steam discharge pipe (1.5) and a plurality of liquid conveying pipes (1.4), and the liquid conveying pipes (1.4) are provided with liquid droppers for controlling the dropping speed of the solution.
4. The method for preparing a pour point depressant for lubricating oils according to claim 3, wherein: the solution bottle (1.1) is arranged on the plate frame (2.1) through two L-shaped clamping arms (2.3), the liquid dropper is arranged on the upper side of the plate frame (2.1), the plate frame (2.1) is detachably connected to the annular sleeve (4.1), the annular sleeve (4.1) is rotatably arranged on the upper side of the heating container (3), and the solution bottle (1.1) is erected in a water bath medium in the heating container (3).
5. The method for preparing a pour point depressant for lubricating oils according to claim 4, wherein: two limiting strips (3.1) are arranged on the heating container (3), and the annular sleeve (4.1) is rotatably arranged between the two limiting strips (3.1).
6. The method for preparing a pour point depressant for lubricating oils according to claim 4, wherein: the solution bottle (1.1) is mounted at an eccentric position of the tray (2.1).
7. The method for preparing a pour point depressant for lubricating oils according to claim 4, wherein: the liquid dropper comprises a communicating ring (5.2) and a liquid storage box (5.3), the communicating ring (5.2) is installed on a tray frame (2.1) through a base I (5.1), a solution feeding port is formed in the lower side of the communicating ring (5.2), a shifter (7.1) is installed in the communicating ring (5.2) in a rotating mode, a piston frame (8.3) is installed on the shifter (7.1) in a sliding mode, the piston frame (8.3) and the shifter (7.1) form a cavity, the liquid storage box (5.3) is installed on the inner side of the communicating ring (5.2), a communicating pipe (5.4) is arranged at the lower end of the liquid storage box (5.3), the communicating pipe (5.4) is arranged on the inner side of the communicating ring (5.2), and a solution at the communicating pipe (5.4) is moved to the solution feeding port through the cavity in the shifter (7.1) to be fed in.
8. The method for preparing a pour point depressant for lubricating oils according to claim 7, wherein: the diameter of a cylinder at the lower end of the piston frame (8.3) is smaller than the inner diameter of the infusion tube (1.4).
9. The method for preparing a pour point depressant for lubricating oils according to claim 7, wherein: the connecting ring (5.2) is provided with a positioning seat (8.1) for limiting the transfer device (7.1), and the positioning seat (8.1) is provided with a stretching control arc plate (8.2) for controlling the sliding state of the piston frame (8.3) in the transfer device (7.1).
10. The pour point depressant for lubricating oil prepared by the method for preparing the pour point depressant for lubricating oil of claim 2, wherein the pour point depressant for lubricating oil comprises the following components: taking 3 parts of pentaerythritol difatty acid ester, 3.6-4.3 parts of fumaric acid, 0.6-1 part of toluenesulfonic acid, 0.3-1.5 parts of toluene and 6-10 parts of acrylamide according to parts by mass.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004039471A1 (en) * | 2002-10-31 | 2004-05-13 | Genevac Ltd | Improvements relating to the use of flasks in centrifugal evaporators |
| CN101705138A (en) * | 2009-11-18 | 2010-05-12 | 济南开发区星火科学技术研究院 | Pour point depressant of lubricating oil and preparation method thereof |
| US20140147922A1 (en) * | 2012-05-30 | 2014-05-29 | Eppendorf Ag | Device for Positioning Vessels and Utilization of a Device for Positioning Vessels |
| KR102051263B1 (en) * | 2019-07-15 | 2019-12-02 | 김정대 | Cosmetic liquid injection device for maskpac |
| CN111505301A (en) * | 2020-05-04 | 2020-08-07 | 莒县人民医院 | Urine sugar detection device is used in division of endocrinology's nursing |
| CN213611453U (en) * | 2020-09-30 | 2021-07-06 | 绍兴百唯康生物科技有限公司 | Special water-bath heating device of molecular probe |
| CN113731388A (en) * | 2021-09-18 | 2021-12-03 | 哈尔滨锡金节能环保科技有限公司 | Production process of photocatalyst hydrosol |
-
2022
- 2022-11-11 CN CN202211415315.3A patent/CN115926870A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004039471A1 (en) * | 2002-10-31 | 2004-05-13 | Genevac Ltd | Improvements relating to the use of flasks in centrifugal evaporators |
| CN101705138A (en) * | 2009-11-18 | 2010-05-12 | 济南开发区星火科学技术研究院 | Pour point depressant of lubricating oil and preparation method thereof |
| US20140147922A1 (en) * | 2012-05-30 | 2014-05-29 | Eppendorf Ag | Device for Positioning Vessels and Utilization of a Device for Positioning Vessels |
| KR102051263B1 (en) * | 2019-07-15 | 2019-12-02 | 김정대 | Cosmetic liquid injection device for maskpac |
| CN111505301A (en) * | 2020-05-04 | 2020-08-07 | 莒县人民医院 | Urine sugar detection device is used in division of endocrinology's nursing |
| CN213611453U (en) * | 2020-09-30 | 2021-07-06 | 绍兴百唯康生物科技有限公司 | Special water-bath heating device of molecular probe |
| CN113731388A (en) * | 2021-09-18 | 2021-12-03 | 哈尔滨锡金节能环保科技有限公司 | Production process of photocatalyst hydrosol |
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