Composite calcium naphthenate lubricating grease and preparation method thereof

A technology of calcium naphthenate base and calcium naphthenate, which is applied in lubricating compositions, petroleum industry and other directions, can solve the problems of high price of calcium sulfonate with high basic value, not being rapidly popularized, complicated preparation process, etc., and achieve excellent Adhesion, good and long lubricating life, the effect of simple preparation process

Active Publication Date: 2014-04-02
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 calcium sulfonate with high alkalinity as raw material has excellent high and low temperature performance, mechanical stability, colloidal stability, oxidation stability, water resistance, corrosion resistance and anti-rust and anti-wear properties. Since the market, it has aroused widespread attention in the grease industry at home and abroad. However, although the high-base value calcium sulfonate-based grease has excellent comprehensive performance, the high price of high-base value calcium sulfonate raw materials and its own complex The preparation process has led to its not being rapidly promoted. 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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  • Composite calcium naphthenate lubricating grease and preparation method thereof
  • Composite calcium naphthenate lubricating grease and preparation method thereof
  • Composite calcium naphthenate lubricating grease and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] 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); Ca(OH) 2 (1.8 kg); 12-hydroxystearic acid (2 kg); terephthalic acid (3.5 kg); 500SN (17 kg).

[0041] In a volume of 110L and with heating, stirring, circulation, cooling of the normal pressure reactor, add 30kg total alkali value of 400mgKOH / g calcium naphthenate and 30kg 100 ° C kinematic viscosity is 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 The aqueous solution of stirring 10 minutes; Be warming up to 60 ℃, constant temperature 90 minutes, material thickens; Add 1.8kgCa(OH) 2 And dilute the suspension with 4 times of water, stir for 10 minutes; add 2...

Embodiment 2

[0044] Raw material components: ultra-high base value calcium naphthenate (total base value 420mgKOH / g, 30kg); 150BS (30kg); naphthenic acid (2.8kg); acetic acid (0.56kg); Ca(OH) 2 (1.8kg); 12-Hydroxystearic acid (2kg); Phthalic acid (3.5kg); 500SN (18kg).

[0045] Prepare ultra-high base value calcium naphthenate-based grease by the method of example 1, the difference is that the total base value of the ultra-high base value calcium naphthenate used is 420mgKOH / g, and the performance data of the obtained grease finished product are shown in Table 1.

Embodiment 3

[0047] Raw material components: ultra-high base value calcium naphthenate (total base value 400mgKOH / g, 30kg); 150BS (20kg); butanol (2.8kg); acetic acid (0.56kg); Ca(OH) 2 (1.8kg); stearic acid (1.9kg); isophthalic acid (3.5kg); 500SN (28kg).

[0048] Prepare ultra-high base value complex calcium naphthenate base grease by the method of example 1, difference is to use butanol, stearic acid, isophthalic acid to replace naphthenic acid, 12-hydroxystearic acid, terephthalic acid , the amount of base oil also changed, and the performance data of the finished lubricating grease are shown in Table 1.

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Abstract

The invention provides composite calcium naphthenate lubricating grease and a preparation method thereof. The lubricating grease comprises the following components based on the weight of the lubricating grease: 1) 10-70% of non-Newtonian calcium naphthenate, 2) 1-10% of a calcium salt of a higher aliphatic acid, 3) 1-15% of a calcium salt of an aromatic acid, and 4) 10-80% of lube base oil. Calcium petroleum naphthenate or synthetic calcium naphthenate is adopted as a raw material of the lubricating grease. The lubricating grease also comprises a composite calcium densifier. The lubricating grease has excellent water-spraying resistance and water-spraying leaching resistance, and has excellent adhesivity, extreme pressure anti-wear property, colloid stability, high dropping point, heat stability, water resistance, corrosion resistance, salt fog resistance, and other performances.

Description

technical field [0001] The invention relates to a lubricant, specifically a high-basic value complex calcium naphthenate-based 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 s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/06C10M177/00C10N30/06C10N50/10
Inventor 何懿峰孙洪伟段庆华刘中其张建荣李玲刘磊姜靓陈政郑会
Owner CHINA PETROLEUM & CHEM CORP
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