Calcium naphthenate base octa-polyurea lubricating grease and preparation method thereof

A technology of calcium naphthenate-based octapolyurea grease and calcium naphthenate, applied in lubricating compositions, petroleum industry, etc., can solve the problem of high price of high-base calcium sulfonate, not being rapidly promoted, and complicated preparation process and other problems, to achieve the effects of excellent extreme pressure wear resistance, excellent adhesion and simple preparation process

Active Publication Date: 2014-02-12
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The lubricating grease produced by using high base value calcium sulfonate as raw material has been put into the market since it has excellent high and low temperature performance, mechanical stability, colloidal stability, oxidation stability, water resistance, corrosion resistance, rust resistance and wear resistance. Since then, it has attracted widespread attention in the grease industry at home and abroad. However, although the high-base value c

Method used

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  • Calcium naphthenate base octa-polyurea lubricating grease and preparation method thereof
  • Calcium naphthenate base octa-polyurea lubricating grease and preparation method thereof
  • Calcium naphthenate base octa-polyurea lubricating grease and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Raw material components: ultra-high base value calcium naphthenate (total base value 400mgKOH / g, 30kg); 150BS (30kg); naphthenic acid (total acid value 120mgKOH / g, acid content 70%, 2.8kg); Acetic acid (0.56kg); boric acid (2.32kg); octadecylamine (0.69kg); ethylenediamine (0.23kg); MDI (1.28kg); 500SN (18kg).

[0042] Step 1: Add 30kg of super high alkali value calcium naphthenate with a total base number of 400mgKOH / g and 30kg of calcium naphthenate with a kinematic viscosity of 31mm 2 / s HVI150BS lubricating base oil, stir, heat up to 50°C, keep the temperature for 10 minutes; add 2.8kg of naphthenic acid, control the temperature at about 50°C, stir for 10 minutes; add 0.56kg of acetic acid and an aqueous solution of 4 times the weight of acetic acid , stirred for 10 minutes; added 2.32kg of boric acid and a boric acid solution completely dissolved in 6 times hot water, stirred, kept at 80°C for 30 minutes, and the material became thicker; heated to 110°C while stirr...

Embodiment 2

[0050] Raw material components: ultra-high base value calcium naphthenate (total base value 420mgKOH / g, 30kg); 150BS (30kg); naphthenic acid (total acid value 120mgKOH / g, acid content 70%, 2.8kg); Acetic acid (0.56kg); boric acid (2.32kg); octadecylamine (0.69kg); ethylenediamine (0.23kg); MDI (1.28kg); 500SN (18kg).

[0051] Add 30kg of ultra-high alkalinity calcium naphthenate with a total base number of 420mgKOH / g and 30kg of calcium naphthenate with a kinematic viscosity of 31mm 2 / s HVI150BS lubricating base oil, stir, heat up to 80°C, keep the temperature for 10 minutes; add 2.8kg of naphthenic acid, control the temperature at about 85°C, stir for 10 minutes; add 0.56kg of acetic acid and an aqueous solution of 4 times the weight of acetic acid , stirred for 10 minutes; added 2.32kg of boric acid and a boric acid solution completely dissolved in 6 times hot water, stirred, kept at 95°C for 30 minutes, the material became thicker; heated to 110°C under stirring, kept for ...

Embodiment 3

[0054] Raw material components: ultra-high base number calcium naphthenate (total base number 400mgKOH / g, 30kg); 150BS (10kg); dodecylbenzenesulfonic acid (2.8kg); acetic acid (0.56kg); boric acid (2.32 kg); Laurylamine (0.52kg); Ethylenediamine (0.26kg); MDI (1.42kg); 500SN (38kg).

[0055] Prepare ultra-high base value naphthenate calcium-based octapolyurea grease by the method of example 1, difference is to use dodecylbenzenesulfonic acid, laurylamine to replace naphthenic acid and octadecylamine and the consumption of each component is somewhat The performance data of the obtained lubricating grease products are shown in Table 1.

[0056] In the lubricating grease obtained in this embodiment, based on the weight of the lubricating grease, the composition is: 41.5% of non-Newtonian calcium naphthenate; 2.6% of octapolyurea; and 55.9% of lubricating base oil.

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Abstract

The invention provides calcium naphthenate base octa-polyurea lubricating grease and a preparation method thereof. The grease comprises the following components in percentage by the weight of the lubricating grease: (1) 10 to 70% of non-Newtonian calcium naphthenate; (2) 0.5 to 30% of octa-polyurea; (3) 10 to 80% of lubricating base oil. The calcium naphthenate base octa-polyurea lubricating grease is prepared by the following steps: converting non-Newtonian calcium naphthenate and then subjecting the conversion product to carry out reactions with diisocyanate, diamine, and monoamine. The lubricating grease provided by the invention has an excellent extreme pressure anti-wear property and a long lubricating service life, and at the same time has the excellent properties of adhesiveness, waterproofness, colloid stability, high dropping point, thermal stability, corrosion resistance, and salt smog resistance.

Description

technical field [0001] The invention relates to a lubricant, specifically a calcium naphthenate-based octapolyurea lubricating grease and a preparation method thereof. Background technique [0002] High base value calcium naphthenate has good cleaning and dispersibility, good acid neutralization ability and excellent diffusivity. It can be used as a detergent for lubricating oil and widely used as an additive for internal combustion engine lubricating oil. Its technical development is mainly It is to make it highly alkaline, that is, to disperse calcium carbonate into diluent oil with surface active calcium cyclic acid to form a colloidal dispersion system. Calcium naphthenate with high base value is mostly an acidic component extracted from distillate oil obtained from crude oil distillation. After being combined with Ca(OH) 2 Reaction, carbonation and other high alkalinization technology, the relevant patents related to the preparation include CN 1465560 and so on. [00...

Claims

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Application Information

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IPC IPC(8): C10M169/04C10M177/00C10N50/10C10N30/06
Inventor 何懿峰孙洪伟刘中其段庆华李玲刘磊姜靓陈政
Owner CHINA PETROLEUM & CHEM CORP
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