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A kind of composite calcium naphthenate-based tetrapolyurea grease and preparation method thereof

A technology of calcium naphthenate-based tetrapolyurea grease and calcium naphthenate, which can be used in lubricating compositions, petroleum industry, etc., and can solve the problem of high alkali value calcium sulfonate, high price, lack of rapid promotion, and complicated preparation process and other problems, to achieve the effect of excellent extreme pressure and anti-wear properties, excellent adhesion, and simple preparation process

Active Publication Date: 2015-08-26
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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  • A kind of composite calcium naphthenate-based tetrapolyurea grease and preparation method thereof
  • A kind of composite calcium naphthenate-based tetrapolyurea grease and preparation method thereof
  • A kind of composite calcium naphthenate-based tetrapolyurea grease and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Raw material components: ultra-high base value calcium naphthenate (total base value 400mgKOH / g, 30kg); 150BS (30kg); naphthenic acid (pure acid value 120mgKOH / g, acid content 70%, 2.8kg); acetic acid (0.56kg); Ca(OH) 2 (1.8kg); 12-hydroxystearic acid (2kg); boric acid (2.32kg); octadecylamine (1.08kg); ethylenediamine (0.12kg); MDI (1kg); 500SN (18kg).

[0051] In a volume of 160L 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 80°C, keep the temperature for 10 minutes; add 2.8kg of naphthenic acid, control the temperature at about 80°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 85 ℃, constant temperature 30 minutes, material thickens; Add 1.8kgCa(OH) 2 And dilute the suspen...

Embodiment 2

[0054] Raw material components: ultra-high base value calcium naphthenate (total base value 420mgKOH / g, 30kg); 150BS (30kg); naphthenic acid (pure acid value 100mgKOH / g, acid content 60%, 2.8kg); acetic acid (0.56kg); Ca(OH) 2 (1.8kg); 12-hydroxystearic acid (2kg); boric acid (2.32kg); octadecylamine (1.08kg); ethylenediamine (0.12kg); MDI (1kg); 500SN (18kg).

[0055] In a volume of 160L and with heating, stirring, circulation, cooling of the normal pressure reactor, add 30kg total alkali value of 420mgKOH / 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 95 ℃, constant temperature 90 minutes, material thickens; Add 1.8kgCa(OH) 2 And the suspension dilut...

Embodiment 3

[0063] Raw material components: ultra-high base number calcium naphthenate (total base number 400mgKOH / g, 30kg); 150BS (20kg); n-butanol (2.8kg); acetic acid (0.56kg); Ca(OH) 2 (1.8kg); stearic acid (1.9kg); boric acid (2.32kg); laurylamine (0.88kg); ethylenediamine (0.14kg); MDI (1.18kg); 500SN (28kg).

[0064] Prepare ultra-high base value complex calcium naphthenate-based tetrapolyurea grease by the method of example 1, the difference is to use n-butanol, stearic acid, laurylamine instead of naphthenic acid, 12-hydroxystearic acid, stearyl The amine and the quantity of each component also change accordingly, and the performance data of the finished lubricating grease are shown in Table 1.

[0065] In the lubricating grease that the present embodiment obtains, take the lubricating grease weight as a benchmark, consist of: 37.9% of non-Newtonian calcium naphthenate; 2.5% of tetrapolyurea; 54.6% of lubricating base oil; 2.3% of calcium stearate; calcium borate 2.7%.

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Abstract

The invention provides a composite calcium naphthenate-based tetrapolyurea lubricating grease and a preparation method therefor. With the weight of the lubricating grease as a reference, the lubricating grease comprises the following ingredients: 10%-70% of non-Newtonian calcium naphthenate, 1%-10% of calcium salts of high fatty acids, 1%-15% of calcium salts of micromolecule inorganic acids and / or aliphatic acids, 0.5%-30% of tetrapolyurea and 10%-80% of lubrication base oil. The lubricating grease employs petroleum calcium naphthenate or synthesized calcium naphthenate as a raw material, and contains composite calcium densifiers and tetrapolyurea compounds. The lubricating grease has a good extreme pressure antiwear property and an ultralong lubrication service life, and has good performances of adhesion, water resistance, colloid stability, high dropping point, heat stability, anti-corrosion and the like.

Description

technical field [0001] The invention relates to a lubricant, in particular to a composite calcium naphthenate-based tetrapolyurea 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. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M169/06C10M177/00C10N30/06C10N50/10
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