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Calcium naphthenate-based hexapolyurea lubricating grease and preparation method thereof

A technology of calcium naphthenate-based hexapolyurea grease and calcium naphthenate, which is used in lubricating compositions, petroleum industry, thickeners, etc., can solve the high price of calcium sulfonate with high base value and has not been rapidly promoted , complex preparation process and other problems, to achieve the effects of excellent adhesion, good extreme pressure and wear resistance, 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 calcium sulfonate-based grease has excellent comprehensive properties, the high price of high-base value calcium sulfonate raw materials and its own complicated preparation At the same time, as people's requirements for environmental protection are getting higher and higher, the pollution of the environment by the sulfonation process that must be passed through the production process of high-alkaline calcium sulfonate is also increasingly concerned by people.

Method used

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  • Calcium naphthenate-based hexapolyurea lubricating grease and preparation method thereof
  • Calcium naphthenate-based hexapolyurea lubricating grease and preparation method thereof
  • Calcium naphthenate-based hexapolyurea lubricating grease and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Raw material components: super 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 (0.84kg); ethylenediamine (0.19kg); MDI (1.17kg); 500SN (18kg).

[0042] Step 1: in a volume be 160L and have heating, stirring, circulation, the atmospheric pressure reactor of cooling, add the ultra-high alkali value calcium naphthenate of 30kg total base number 400mgKOH / g and 30kg 100 ℃ of kinematic viscosity are 31mm 2 / s HVI150BS lubricating base oil, stir, heat up to 50°C, keep the temperature for 10 minutes; add 2.8kg naphthenic acid, control the temperature at about 50°C, stir for 10 minutes; add 0.56kg of acetic acid and 4 times the weight of acetic acid Add 2.32kg of boric acid and completely dissolve the boric acid solution with 6 times hot water, stir, keep the temperature at 95°C for 30 minutes, the material becom...

Embodiment 2

[0049] 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 (0.84kg); ethylenediamine (0.19kg); MDI (1.17kg); 500SN (18kg).

[0050] In a volume of 110L and with heating, stirring, circulation, cooling of the normal pressure reactor, add 30kg total alkali value of 420mgKOH / g calcium naphthenate and 30kg100 ° C kinematic viscosity is 31mm 2 / s HVI150BS lubricating base oil, stirring, heating up to 80°C, constant temperature for 10 minutes; adding 2.8kg of dodecylbenzenesulfonic acid, controlling the temperature at about 80°C, stirring for 10 minutes; adding 0.56kg of acetic acid and The aqueous solution of 4 times of acetic acid weight was stirred for 10 minutes; Added 2.32kg boric acid and the boric acid solution dissolved completely with 6 times of hot water, stirred, kept at 80°C for...

Embodiment 3

[0053] 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 (2.32kg ); Laurylamine (0.66kg); Ethylenediamine (0.21kg); MDI (1.33kg); 500SN (38kg).

[0054] Prepare ultra-high base value calcium naphthenate base hexaurea 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.

[0055] 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 hexaurea; and 55.9% of lubricating base oil.

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Abstract

The invention provides calcium naphthenate-based hexapolyurea lubricating grease and a preparation method thereof. On a basis of the lubricating grease weight, the lubricating grease comprises the following components: 1) 10-70% of non-newtonian calcium naphthenate; 2) 0.5-30% of hexapolyurea; 3) 10-80% of lubricating base oil. The calcium naphthenate-based hexapolyurea lubricating grease is obtained by converting newtonian calcium naphthenate, and reacting with diisocyanate, diamine, and monamine. The lubricating grease of the invention has excellent extreme-pressure abrasion resistance and long lubricating life, and also has excellent adhesiveness, water resistance, colloid stability, high dropping point, thermal stability, corrosion resistance, salt mist resistance, and the like.

Description

technical field [0001] The invention relates to a lubricant, specifically a calcium naphthenate-based hexaurea 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. [0003] ...

Claims

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Application Information

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IPC IPC(8): C10M123/02C10M169/06C10M177/00C10N30/06C10N50/10
Inventor 何懿峰孙洪伟段庆华李玲刘磊刘中其姜靓陈政
Owner CHINA PETROLEUM & CHEM CORP
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