Poly-aromatic alcoholysis-type ternary polymer diesel pour point reducer and preparation method thereof

A ternary polymer, diesel pour point depressant technology, used in the petroleum industry, fuel additives, liquid carbon-containing fuels, etc., can solve the problem of pour point depressant without filtration, paraffin-based diesel without filtration effect or no filtration effect. Reverse rise, poor universality and other problems, to achieve the effect of reducing the freezing point, enhancing the dispersion effect, and easy to obtain raw materials

Active Publication Date: 2017-09-22
SHANGHAI INSTITUTE OF TECHNOLOGY
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are many types of pour point depressants at home and abroad, mainly including comb polymer type, polyacrylic acid higher carbon alcohol ester type, ethylenically unsaturated ester polymer type, etc. In addition, the common disadvantage of diesel oil pour point depressants in my country is that pour point depressant does not depress filter. Research on pour point depressants that can significantly reduce the cold filter point of oil products is the focus of future research.
In view of the shortcomings of some domestic diesel pour point depressants that have no filtration effect on paraffin-based diesel or that the filtration effect does not decrease but rises and has poor universality, we have developed a new type of diesel pour point depressant.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Poly-aromatic alcoholysis-type ternary polymer diesel pour point reducer and preparation method thereof
  • Poly-aromatic alcoholysis-type ternary polymer diesel pour point reducer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Add 10.8g (0.1mol) of benzyl alcohol, 24.0g (0.13mol) of ten Alkenoic acid, 0.42g p-toluenesulfonic acid, 0.31g hydroquinone, 50ml solvent toluene, heat up to 110°C, stir and reflux for 5h. After the reaction is over, pour the reaction mixture into a round-bottomed flask, and use a rotary evaporator for rotary evaporation to remove the solvent toluene, then wash with saturated sodium carbonate solution and saturated saline until the water layer is colorless, and then wash with distilled water Repeated washing several times until the water layer is neutral, after separation, wash with anhydrous MgSO 4 After drying and filtering, benzyl undecylenate was obtained as a brown-yellow oily liquid.

[0025] (2) Add 2.74g (0.01mol) benzyl undecylenate, 0.49g (0.01 mol) maleic anhydride, 2.08g (0.02mol) styrene, and 20ml toluene. At the same time, the three-necked flask was ventilated with nitrogen for 4 to 5 minutes, then vacuumed for about 1 to 2 minutes, and repeated 3 t...

Embodiment 2

[0027] The difference with Example 1 is that step (2): add 2.74g (0.01mol) decant successively to the reaction flask equipped with electric stirrer, temperature controller, constant pressure dropping funnel, reflux condenser and nitrogen inlet tube Benzyl monoenoate, 0.98g (0.02mol) maleic anhydride, 2.08g (0.02mol) styrene, 20ml toluene, and at the same time, pass nitrogen gas through the three-necked flask for 4-5 minutes, then vacuumize for about 1-2 minutes, repeat 3 times, to remove air from the reaction system. When the reaction temperature reaches 80°C, slowly dropwise add 0.07g of benzoyl peroxide dissolved in toluene solution (30-45min) and stir and reflux for 6h. After 6 hours of polymerization reaction, 8.58 g (0.04 mol) of tetradecyl alcohol, 0.29 g of catalyst p-toluenesulfonic acid, and 20 ml of toluene were added to the reaction system, and the reaction was carried out at a temperature of 115° C. for 7 hours. After the reaction solution was cooled to room tempe...

Embodiment 3

[0029]The difference with Example 1 is that step (2): add 2.74g (0.01mol) decant successively to the reaction flask equipped with electric stirrer, temperature controller, constant pressure dropping funnel, reflux condenser and nitrogen inlet tube Benzyl monoenoate, 1.47g (0.03mol) maleic anhydride, 2.08g (0.02mol) styrene, 20ml toluene, and at the same time, pass nitrogen gas through the three-necked flask for 4-5 minutes, then vacuumize for about 1-2 minutes, repeat 3 times, to remove air from the reaction system. When the reaction temperature reaches 80°C, slowly dropwise add 0.075g of benzoyl peroxide dissolved in toluene solution (30-45min to complete the addition), and stir to reflux for 6h. After 6 hours of polymerization reaction, 12.86 g (0.06 mol) of tetradecyl alcohol, 0.383 g of catalyst p-toluenesulfonic acid, and 30 ml of toluene were added to the reaction system, and the reaction was carried out at a temperature of 115° C. for 7 hours. After the reaction soluti...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention belongs to the technical field of pour point reducers, and particularly relates to a poly-aromatic alcoholysis-type ternary polymer diesel pour point reducer and a preparation method thereof. The pour point reducer is a ternary polymer obtained by polymerizing three monomers, i.e., undecylenic acid benzyl ester, maleic anhydride and styrene and performing the esterification with high alcohols. A condensation point and a cold filter plugging point of the diesel can be effectively improved. The pour point reducer disclosed by the invention has the advantages of simple synthetic method, cheap raw materials, less additive dosage, stable performance, good pour point reduction effect and the like.

Description

technical field [0001] The invention relates to a polyaryl alcoholysis type ternary polymer pour point depressant and a preparation method thereof, belonging to the technical field of pour point depressants. Background technique [0002] Diesel is generally made by blending two or more components. At present, the blending components of diesel in industrial production include: straight-run, catalytic diesel, coking diesel and hydrocracked diesel. The blended diesel is middle distillate oil. The general boiling range is between 170°C and 390°C, containing normal alkanes, olefins, aromatics and some other polar and non-polar compounds. Linear alkanes have the lowest solubility in fuel oil. When the temperature is lower than the cloud point of diesel oil, linear alkanes will form wax and be separated from fuel oil. The distribution of these n-waxes is generally at C 10 ~C 25 Within the range, when the carbon chain length of the normal wax molecule increases, its solubility in...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C08F212/08C08F220/16C08F220/08C08F8/14C08F6/10C08F6/12C10L10/16C10L1/198
Inventor 韩生许广文薛原蔺华林王爱民廉翔赵志成刘平周嘉伟
Owner SHANGHAI INSTITUTE OF TECHNOLOGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap