Preparation method of diesel oil pour point depressant
A diesel pour point depressant and solvent technology, used in the petroleum industry, fuel additives, liquid carbon-containing fuels, etc., can solve problems such as poor universality, achieve good pour point depressant effect, reduce condensation point, and increase shear performance Effect
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preparation example Construction
[0023] The invention provides a kind of diesel oil point depressant preparation method, comprises the following steps: 1) the synthesis of high-carbon ester of methacrylate: take a certain amount of high-carbon alcohol, catalyst, polymerization inhibitor and solvent and add in the reactor successively, Raise the temperature to 60°C and keep stirring to dissolve the solid completely, then add a certain amount of methacrylic acid to it, raise it to the reaction temperature, and react for a certain period of time. 2) Synthesis of the aminated compound of high carbon methacrylate-maleic anhydride binary copolymer: take a certain amount of high carbon ester methacrylate, maleic anhydride, initiator, solvent and mix uniformly , start the reaction under nitrogen protection and a certain reaction temperature, add a certain amount of aromatic amine to the reaction solution after a certain period of reaction, change the reaction temperature and then react for a certain period of time, af...
Embodiment 1
[0033] The preparation method of diesel oil pour point depressant provided by the present invention comprises the following steps:
[0034] 1) Add 21.4g of tetradecyl alcohol, 0.31g of inhibitor hydroquinone, and 50ml of solvent toluene into a three-neck flask equipped with a condenser, a water separator, and a magnetic stirring device, and heat up to 60°C to dissolve all higher alcohols in quickly add 12.9g of methacrylic acid and 0.48g of catalyst p-toluenesulfonic acid into the three-necked flask and raise it to 125°C. The water generated by the esterification reaction will form with toluene as the reaction temperature rises. The copolymer is distilled out and enters the water separator after being condensed. React at this temperature for 5 hours, and when the amount of water released is observed to be equivalent to the theoretical value, the system is in a yellowish-brown transparent liquid state, and the reaction is terminated.
[0035] After the reaction is completed, t...
Embodiment 2
[0039] The difference between this embodiment and Example 1 is that the higher aliphatic alcohol in step 1) is replaced with cetyl alcohol.
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