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A lubricating oil dispersant

A lubricating oil dispersant, succinimide technology, applied in lubricating compositions, additives, petroleum industry, etc., can solve the problems of low efficiency and inconspicuous dispersion effect, and achieve high dispersion efficiency, effective adsorption and control, The effect of reducing the influence of viscosity

Active Publication Date: 2021-02-05
宣城市聚源精细化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, many dispersants produced on the existing market have no obvious dispersion effect and low efficiency

Method used

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  • A lubricating oil dispersant

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Embodiment Construction

[0011] A lubricating oil dispersant, made of the following components in parts by weight, 15 parts of succinimide, 2 parts of 15% sodium hydroxide solution, 2 parts of white carbon black, 6 parts of sodium lignin sulfate, n-amyl alcohol 1 part, 3 parts of malonic acid, 2 parts of sodium citrate, 4 parts of sodium sulfite; it is made by the following production steps:

[0012] 1) Stir lignin sodium sulfate and sodium sulfite under nitrogen, heat to 100°C for 25-30 minutes, then lower the temperature to 60°C, add 15% sodium hydroxide solution, then gradually heat up to 150°C and heat for 4- 5 hours;

[0013] 2) React n-pentanol, malonic acid and white carbon black with nitrogen at 55-60°C and 15-18MPa pressure for 40-45 minutes;

[0014] 3) Mix the raw materials obtained in 1) and 2), and when heated to 60°C, add succinimide, then stir, and heat to 120°C, keep for 2 hours, add sodium citrate, and lower the temperature to 78°C , kept for 1 hour to prepare a dispersant.

[0015...

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Abstract

The invention discloses a lubricating oil dispersant. The lubricating oil dispersant is prepared from the following components: succimide, a sodium hydroxide solution with a concentration of 15%,white carbon black, sodium lignin sulfate, n-amyl alcohol, propane diacid, sodium citrate and sodium hydrosulphite. According to the invention, through modification of sodium lignin sulfate, dispersion and viscosity reduction properties of the dispersant are improved, stability is enhanced, and high dispersion efficiency is realized; the lubricating oil dispersant has good temperature resistance and exerts good peptization dispersion effect on common solid particles; and through adding of modified white carbon black, dispersion effect and a dispersion speed are improved, influence of viscosity of lubricating oil at low temperature is reduced, and effective adsorption and control of black greasy filth dispersion and a paint film are realized.

Description

technical field [0001] The invention relates to the field of chemicals, in particular to a lubricating oil dispersant. Background technique [0002] At present, people widely use the method of adding dispersant to lubricating oil, which can disperse the precursors of sludge, varnish and carbon deposits in the oil, prevent them from forming sludge, varnish and carbon deposits, prolong the oil change period, and thus prolong Service life of internal combustion engines. However, many dispersants produced in the existing market have insignificant dispersion effects and low efficiency. Contents of the invention [0003] The object of the present invention is to provide a lubricating oil dispersant. [0004] The present invention is realized through the following technical solutions: [0005] A lubricating oil dispersant, made of the following components in parts by weight, 15 parts of succinimide, 2 parts of 15% sodium hydroxide solution, 2 parts of white carbon black, 6 par...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M161/00C10N30/04
Inventor 程聚光
Owner 宣城市聚源精细化工有限公司
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