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A kind of copolymer for diesel oil low temperature fluidity improver and its synthesis method

A technology of low-temperature fluidity and copolymer, which is applied in the direction of additives, petroleum industry, lubricating compositions, etc., can solve the problems of ineffective cold filter point and poor adaptability of diesel oil, and achieve the effect of improving low-temperature fluidity of diesel oil

Active Publication Date: 2016-03-02
SHENZHEN GCD PETROLEUM ADDITIVE CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing additives mainly focus on lowering the freezing point, and have no obvious effect on lowering the cold filter point. With the change of diesel composition, diesel low-temperature flow improvers have poor adaptability to diesel and need to be compounded to be effective.

Method used

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  • A kind of copolymer for diesel oil low temperature fluidity improver and its synthesis method
  • A kind of copolymer for diesel oil low temperature fluidity improver and its synthesis method
  • A kind of copolymer for diesel oil low temperature fluidity improver and its synthesis method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Dodecylamine 37g, maleic anhydride 20g, toluene 25g, reaction temperature 60°C, react for 2 hours to obtain maleamic acid product I.

[0031] Put 500ml of toluene into a 1000ml autoclave, add 70ml of vinyl acetate, 4g of azobisisobutyronitrile, and 10g of reactant I respectively, then raise the temperature to 80°C, and inject ethylene to make the pressure reach 8Mpa. After the reaction starts, keep the temperature at 80°C. After 2 hours of reaction, raise the reaction temperature to 110°C. After 3 hours of reaction, discharge the material, distill at 60°C and mix with 50% aromatics to obtain finished product 1#.

Embodiment 2

[0033] Dodecylamine 37g, maleic anhydride 20g, toluene 25g, reaction temperature 60°C, react for 2 hours to obtain maleamic acid product I.

[0034] Put 500ml of toluene into a 1000ml autoclave, add 90ml of vinyl acetate, 5g of azobisisobutyronitrile, and 15g of reactant I, then raise the temperature to 80°C, and inject ethylene to make the pressure reach 15Mpa. After the reaction started, the temperature was kept at 80°C. After the reaction was carried out for 2 hours, the reaction temperature was raised to 120°C. After 2 hours of reaction, the material was unloaded, and after distillation at 120°C, it was mixed with 55% aromatics to obtain the finished product 2#.

Embodiment 3

[0036] Hexadecylamine 48g, maleic anhydride 20g, petroleum ether 40g, reaction temperature 100°C, react for 2.5 hours to obtain maleamic acid product II.

[0037] Add 600ml of petroleum ether into a 1000ml autoclave, add 70ml of vinyl acetate, 6g of azobisisobutyronitrile, and 20g of reactant II, then raise the temperature to 130°C, inject ethylene to make the pressure reach 10Mpa. After the reaction started, the temperature was kept at 130°C. After the reaction was carried out for 2 hours, the reaction temperature was raised to 150°C. After 2 hours of reaction, the material was unloaded, and after distillation at 80°C, it was mixed with 45% aromatics to obtain the finished product 3#.

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Abstract

The application for the invention provides a copolymer used as a diesel oil low temperature fluidity improver, which has the following structure: wherein, n is an integer of 2 to 30, m is an integer of 2 to 20, k is an integer of 1 to 10, and R is Alkanes with 8 to 20 carbons. The application of the present invention also provides a synthesis method of the copolymer, the method comprising the following steps: 1) Synthesis of maleic acid: dissolving fatty amine and maleic anhydride in a solvent in an equimolar ratio, Heating to 60-120°C and reflux for 2-3 hours to obtain a mixture of the reaction product maleic acid and some organic solvents; 2) Synthesis of terpolymer: the reaction product of step 1 is mixed with ethylene, vinyl acetate and The solvents are added into the polymerization kettle in proportion, and the copolymer is synthesized by reacting for 4-5 hours under the action of the initiator, wherein the molar ratio of the three raw materials of ethylene, vinyl acetate and maleic acid is 6-20:1-5 : 0.05-0.1; 3) Distilling off the polymerization solvent at 60-120° C., and mixing the reactant with an aromatic hydrocarbon solvent with a weight ratio of 45-60% to obtain the polymer. The copolymer can reduce the freezing point and cold filter point of diesel oil, has strong adaptability to diesel oil with high wax content, and has a good effect of lowering the freezing point and cold filter point without compounding.

Description

technical field [0001] The application of the present invention relates to a copolymer used as a low-temperature fluidity improver for diesel oil and its synthesis method, specifically, to an ethylene-vinyl acetate-maleamic acid three-copolymer used as a low-temperature fluidity improver for diesel oil. Metapolymers and their synthesis techniques. Background technique [0002] Diesel low temperature flow improver (DFI) is an important class of modified polymers in petroleum additives. Adding a small amount of DFI to diesel can effectively reduce the freezing point and cold filter point of diesel, improve the low-temperature fluidity of diesel, and has important practical significance for increasing diesel production, improving production flexibility and economic benefits. [0003] As the world's crude oil reserves and quality decline, the quality of diesel oil, especially its low-temperature fluidity, is greatly affected. Therefore, adding DFI to diesel is a commonly used ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F210/02C08F218/08C08F222/40C10L10/00C10M143/02
CPCC08F210/02C10M149/06C10M159/005C10L1/1641C10L1/2364C10L10/14C10M2205/024C10N2030/02C10L1/1963C10M2209/084C10M2217/024C10M2209/086C10N2060/09C08F218/08C08F222/402
Inventor 熊靓
Owner SHENZHEN GCD PETROLEUM ADDITIVE CO