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Diesel pour point depressant and preparation method thereof

A technology of diesel pour point depressant and active agent, applied in the field of diesel pour point depressant and its preparation, can solve the problems of small limitation, reduce diesel cold filter point and freezing point, etc. Effect

Active Publication Date: 2012-07-11
山东星火知识产权服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to address the above problems, to provide a new diesel oil pour point depressant, to overcome the defects existing in the existing pour point depressant, can greatly reduce the cold filter point and freezing point of diesel oil, and is widely applicable to various diesel oil , limited

Method used

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  • Diesel pour point depressant and preparation method thereof
  • Diesel pour point depressant and preparation method thereof
  • Diesel pour point depressant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] 1. Preparation of ethylene-vinyl acetate

[0035] Put vinyl acetate and ethylene into the autoclave according to the molar ratio of 1:2, control the pressure at 10Mpa, temperature 180°C, use 1wt% initiator azobisisobutyronitrile, and polymerize for 3 hours to obtain ethylene- Vinyl acetate copolymer.

[0036] 2. Preparation of Styrene-Stearyl Maleate Copolymer

[0037] (1) Add styrene and maleic anhydride to the reactor at a molar ratio of 1:2, use dibenzamide peroxide as the initiator, and use toluene as the solvent, heat up to 110°C under constant stirring, and react for 4 hours. That is, a styrene-maleic anhydride copolymer was obtained.

[0038] (2) Add stearyl alcohol which is equimolar to maleic anhydride, and use p-toluenesulfonic acid as a catalyst to perform esterification at 150°C to obtain a styrene-stearyl maleate copolymer.

[0039] 3. Preparation of polymethacrylate

[0040] (1) Add methacrylic acid, pentanol, hexanol, heptanol, octanol, lauryl alcohol...

Embodiment 2

[0050] 1. Preparation of ethylene-vinyl acetate

[0051] Put vinyl acetate and ethylene into the autoclave according to the molar ratio of 1:2.2, the pressure is controlled at 12Mpa, the temperature is 190°C, and 1wt% initiator azobisisobutyronitrile is used for polymerization reaction for 3 hours to obtain ethylene- Vinyl acetate copolymer.

[0052] 2. Preparation of Styrene-Stearyl Maleate Copolymer

[0053] (1) Add styrene and maleic anhydride to the reactor at a molar ratio of 1:2, use dibenzamide peroxide as the initiator, and use toluene as the solvent, heat up to 120°C under constant stirring, and react for 4 hours. That is, a styrene-maleic anhydride copolymer was obtained.

[0054] (2) Add stearyl alcohol which is equimolar to maleic anhydride, and use p-toluenesulfonic acid as a catalyst to perform esterification at 150°C to obtain a styrene-stearyl maleate copolymer.

[0055] 3. Preparation of polymethacrylate

[0056] (1) Add methacrylic acid, pentanol, hexanol...

Embodiment 3

[0061] 1. Preparation of ethylene-vinyl acetate

[0062] Put vinyl acetate and ethylene into the autoclave at a molar ratio of 1:2.2, control the pressure at 12Mpa, temperature 190°C, use 1wt% initiator benzoyl peroxide, and polymerize for 3 hours to obtain ethylene-acetic acid vinyl ester copolymer.

[0063] 2. Preparation of Styrene-Stearyl Maleate Copolymer

[0064] (1) Add styrene and maleic anhydride to the reactor at a molar ratio of 1:2.2, use dibenzamide peroxide as the initiator, and use toluene as the solvent, heat up to 120°C under constant stirring, and react for 4 hours. That is, a styrene-maleic anhydride copolymer was obtained.

[0065] (2) Add stearyl alcohol which is equimolar to maleic anhydride, and use p-toluenesulfonic acid as a catalyst to perform esterification at 150°C to obtain a styrene-stearyl maleate copolymer.

[0066] 3. Preparation of polymethacrylate

[0067] (1) Add methacrylic acid, amyl alcohol, hexanol, heptanol, octanol, lauryl alcohol,...

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Abstract

The invention belongs to the field of diesel additive and particularly relates to a diesel pour point depressant and a method for preparing the diesel pour point depressant. The diesel pour point depressant overcomes the defects of the prior pour point depressant and can be used for greatly reducing the cold filter plugging point and the pour point of diesel. In addition the diesel pour point depressant can be widely applied to various diesels, thereby having low limitation.

Description

technical field [0001] The invention belongs to the technical field of diesel oil additives, in particular to a diesel pour point depressant and a preparation method thereof. Background technique [0002] Ordinary diesel oil contains more straight-chain alkanes, so it is easy to condense into paraffin and precipitate when the temperature is low, which will block the oil circuit of the diesel engine and affect the normal operation of the engine. Therefore, diesel vehicles in northern my country use low-grade diesel when the temperature is low. Correspondingly, oil refineries in northern my country begin to produce low-grade diesel oil in winter, and this process is realized by adding pour point depressants to ordinary diesel oil. Diesel pour point depressant, also known as diesel low-temperature fluidity improver, is widely used in petroleum refining, transportation, storage, and use. It is of great significance for increasing the ratio of diesel to gasoline, increasing die...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/192C10L1/196
Inventor 张成如
Owner 山东星火知识产权服务有限公司
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