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