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A kind of high alkali value composite calcium-based polyurea grease and preparation method thereof

A technology of polyurea lubricating grease and composite calcium base, applied in the field of lubricating grease, can solve the problems of high base value calcium sulfonate, high price, not being rapidly promoted, complex preparation process, etc., and achieve excellent corrosion resistance and high temperature resistance , low cost and simple preparation process

Active Publication Date: 2017-07-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Using calcium sulfonate with high base value as raw material to produce lubricating grease, because of its excellent high and low temperature performance, mechanical stability, colloidal stability, oxidation stability, water resistance, corrosion resistance and anti-rust and anti-wear properties, it has been put into the market since then. 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 high alkali value composite calcium-based polyurea grease and preparation method thereof
  • A kind of high alkali value composite calcium-based polyurea grease and preparation method thereof
  • A kind of high alkali value composite calcium-based polyurea grease and preparation method thereof

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preparation example Construction

[0021] The present invention also provides a preparation method of the above lubricating grease.

[0022] On the one hand, the present invention provides a kind of high base value composite calcium-based polyurea grease, based on the grease weight, comprising the following components: 10-70% by weight of non-Newtonian calcium sulfonate-calcium naphthenate; 1-20% by weight of calcium salt of higher fatty acid; 1-15% by weight of calcium salt of small molecular inorganic acid and / or lower fatty acid; 0.5-30% by weight of polyurea compound; 10-80% by weight of base oil.

[0023] Preferably, based on the weight of the grease, the following components are included: 20-65% by weight of non-Newtonian calcium sulfonate-calcium naphthenate; 2-15% by weight of calcium salts of higher fatty acids; 2-10% by weight Calcium salts of small molecular inorganic acids and / or lower fatty acids; 1-20% by weight of polyurea compounds; 20-70% by weight of base oil.

[0024] The non-Newtonian calci...

Embodiment 1

[0090] This example is used to illustrate the high alkali value complex calcium-based polyurea grease prepared by the present invention.

[0091] Raw material components: ultra-high base value calcium sulfonate (total base value 400mgKOH / g, 24kg); ultra-high base value calcium naphthenate (total base value 400mgKOH / g, 6kg); HVI150BS lubricating base oil (100℃ Kinematic viscosity is 31mm 2 / s, 30kg); naphthenic acid (total acid value 180mgKOH / g, 2.8kg); acetic acid (0.56kg); calcium hydroxide (1.8kg); 12-hydroxystearic acid (2kg); boric acid (2.32kg ); octadecylamine (1.5kg); MDI (0.7kg); HVI500SN lubricating base oil (100°C kinematic viscosity is 11mm 2 / s, 18kg).

[0092] Add 24kg of super high alkali value calcium sulfonate with total base value of 400mgKOH / g and 6kg of super high alkali value calcium sulfonate with total base value of 400mgKOH / g Calcium naphthenate and 30kg of HVI150BS lubricating base oil, stir, heat up to 50°C, and keep the temperature for 10 minutes; ...

Embodiment 2

[0095] This example is used to illustrate the high alkali value complex calcium-based polyurea grease prepared by the present invention.

[0096] Raw material components: ultra-high base value calcium sulfonate (total base value 400mgKOH / g, 24kg); ultra-high base value calcium naphthenate (total base value 400mgKOH / g, 6kg); HVI150BS lubricating base oil (100℃ Kinematic viscosity is 31mm 2 / s, 30kg); naphthenic acid (total acid value 180mgKOH / g, 2.8kg); acetic acid (0.56kg); calcium hydroxide (1.8kg); 12-hydroxystearic acid (2kg); boric acid (2.32kg ); octadecylamine (1.5kg); MDI (0.7kg); HVI500SN lubricating base oil (100°C kinematic viscosity is 11mm 2 / s, 18kg).

[0097] Add 24kg of super high alkali value calcium sulfonate with total base value of 400mgKOH / g and 6kg of super high alkali value calcium sulfonate with total base value of 400mgKOH / g Calcium naphthenate and 30kg of HVI150BS lubricating base oil, stir, heat up to 50°C, and keep the temperature for 10 minutes; ...

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Abstract

The invention discloses a high base number composite calcium-based polyurea lubricating grease, which is characterized by comprising the following components with the weight of lubricating grease as the basis: 10-70wt% of a non-Newtonian calcium sulfonate-calcium naphthenate; 1-20wt% of a calcium salt of higher fatty acid; 1-15wt% of a calcium salt of small molecular inorganic acid and / or lower fatty acid; 0.5-30wt% of a polyurea compound; and 10-80wt% of base oil. The invention also discloses a preparation process of the high base number composite calcium-based polyurea lubricating grease and the prepared high base number composite calcium-based polyurea lubricating grease. The high base number composite calcium-based polyurea lubricating grease provided by the invention has excellent corrosion resistance and high temperature resistance, and also has water resistance and adhesion, salt fog resistance, colloidal stability, extreme pressure anti-wear properties and other properties superior to composite calcium sulfonate based polyurea lubricating grease, and has longer lubricating life. The preparation technology for the lubricating grease provided by the invention has the advantages of simplicity, environmental protection, low cost, and stable product quality.

Description

technical field [0001] The invention relates to lubricating grease, in particular to a high-basic value composite calcium-based polyurea lubricating grease and a preparation method thereof. Background technique [0002] Calcium sulfonate has been used as a detergent and antirust agent for lubricating oil for decades, and is widely used as an additive for internal combustion engine lubricating oil. Its technical development is mainly to make it highly alkaline, that is, to use calcium carbonate with a Active calcium alkylbenzene sulfonate or calcium alkyl carboxylate is dispersed in diluent oil to form a colloidal dispersion system. High base value calcium sulfonate can be divided into petroleum calcium sulfonate and synthetic calcium sulfonate according to different production methods. Calcium petroleum sulfonate is made with oleum or SO 3 Petroleum sulfonic acid, a by-product of the production of white oil from sulfonated mineral lubricating oil, is combined with Ca(OH) ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M141/08C10M169/06C10M177/00C10N50/10
Inventor 孙洪伟何懿峰段庆华张建荣刘中其姜靓陈政郑会
Owner CHINA PETROLEUM & CHEM CORP