Synthesis process of novel lubricant pour point depressant

Abstract

The invention provides a synthesis process of a novel lubricant pour point depressant, specifically comprising the following steps: synthetizing high alcohols, polymerization inhibitor, crylic acid and catalyst to obtain white waxy solid acrylic high alcohols ester, and then synthetizing the acrylic high alcohols ester and biopolymer of cetene to obtain biopolymer of acrylic high alcohols ester and cetene. A synthetic ratio of synthetic technologies provided by the invention is high; biopolymer of acrylic high alcohols ester and cetene synthetized by the technology is used as lubricant and pour point depressant, is featured with high purity, and is capable of helping to reduce pour points under the condition that pour point depressants have bad use effects when saled pour point depressants are used singly, so that application prospect is better.

Description

technical field

[0001] The invention relates to the field of chemical synthesis, in particular to a synthesis process of a novel lubricant pour point depressant. Background technique

[0002] The distribution of n-alkanes in oil products is the main factor affecting the effect of pour point depressant, and there is a certain correspondence between the distribution of n-alkanes and the length of the ester chain of the pour point depressant. There is an optimal value for the carbon number of the ester side chain of a single type of pour point depressant, and at the same time, it has pour point depressant selectivity for different oil products, which limits the scope of application of a single pour point depressant. The pour point depressants with different chemical compositions are compounded to improve the pour point depressant effect through the coordination effect, which can expand the application range of the pour point depressants. Contents of the invention

[0003] Th...

Examples

Embodiment Construction

[0012] A synthetic process of a novel lubricant pour point depressant,

[0013] 1. Synthesis of Higher Alcohol Acrylate

[0014] Reagents and specifications: high carbon alcohol, anhydrous calcium chloride, analytical alcohol; acrylic acid, chemically pure; methanol, analytically pure.

[0015] Specific steps: In a three-neck flask equipped with a reflux condenser, a thermometer and an agitator, add measured amounts of higher alcohol and a polymerization inhibitor, heat to a certain temperature to completely melt the higher alcohol, and then add acrylic acid and catalyst in sequence. The mixture was first heated to reflux at 110-120°C for about 2.5 hours, and then gradually raised to 140°C for about 6 hours to obtain the product crude ester. Remove the unreacted unsaturated acid and residual water in the crude ester by distillation under reduced pressure, wash the acidic catalyst and polymerization inhibitor with a weak alkali solution with a mole fraction of 0.2% at a temper...

technical field

[0001] The invention relates to the field of chemical synthesis, in particular to a synthesis process of a novel lubricant pour point depressant. Background technique

[0002] The distribution of n-alkanes in oil products is the main factor affecting the effect of pour point depressant, and there is a certain correspondence between the distribution of n-alkanes and the length of the ester chain of the pour point depressant. There is an optimal value for the carbon number of the ester side chain of a single type of pour point depressant, and at the same time, it has pour point depressant selectivity for different oil products, which limits the scope of application of a single pour point depressant. The pour point depressants with different chemical compositions are compounded to improve the pour point depressant effect through the coordination effect, which can expand the application range of the pour point depressants. Contents of the invention

[0003] Th...

Examples

Embodiment Construction

[0012] A synthetic process of a novel lubricant pour point depressant,

[0013] 1. Synthesis of Higher Alcohol Acrylate

[0014] Reagents and specifications: high carbon alcohol, anhydrous calcium chloride, analytical alcohol; acrylic acid, chemically pure; methanol, analytically pure.

[0015] Specific steps: In a three-neck flask equipped with a reflux condenser, a thermometer and an agitator, add measured amounts of higher alcohol and a polymerization inhibitor, heat to a certain temperature to completely melt the higher alcohol, and then add acrylic acid and catalyst in sequence. The mixture was first heated to reflux at 110-120°C for about 2.5 hours, and then gradually raised to 140°C for about 6 hours to obtain the product crude ester. Remove the unreacted unsaturated acid and residual water in the crude ester by distillation under reduced pressure, wash the acidic catalyst and polymerization inhibitor with a weak alkali solution with a mole fraction of 0.2% at a temper...