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Composite calcium naphthenate-based lubricating grease and preparation method thereof

A calcium naphthenate-based, calcium naphthenate technology, applied in the field of lubricating grease, can solve the problems of high base value calcium sulfonate, high price, not being rapidly promoted, complicated preparation process, etc., and achieve low cost and excellent corrosion resistance Good performance and salt spray resistance, simple preparation process

Active Publication Date: 2015-01-21
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 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-basic value calcium sulfonate-based grease has excellent comprehensive properties, the high price of its raw material high-basic calcium sulfonate 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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  • Composite calcium naphthenate-based lubricating grease and preparation method thereof
  • Composite calcium naphthenate-based lubricating grease and preparation method thereof
  • Composite calcium naphthenate-based lubricating grease and preparation method thereof

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preparation example Construction

[0022] The present invention also provides a preparation method of the above lubricating grease.

[0023] On the one hand, the present invention provides a kind of composite calcium naphthenate base lubricating grease, take the lubricating grease weight as a basis, comprise following components: 20-70 weight % non-Newtonian body calcium naphthenate; 1-10 weight % Calcium salt of higher fatty acid; 25-70% by weight of base oil, wherein the infrared spectrum of non-Newtonian calcium naphthenate has the characteristic absorption peak of aragonite calcium carbonate.

[0024] Preferably, based on the weight of the grease, the grease further includes 1-15% by weight of calcium salts of small molecular inorganic acids and / or lower fatty acids, and / or 1-15% by weight of calcium salts of aromatic acids.

[0025] Preferably, based on the weight of the grease, the following components are included: 30-55% by weight of non-Newtonian calcium naphthenate; 2-6% by weight of calcium salts of ...

Embodiment 1

[0062] This example is used to illustrate the complex calcium naphthenate-based lubricating grease prepared by the present invention.

[0063] Add 30kg of calcium naphthenate with a total base value of 320mgKOH / g and 30kg of calcium naphthenate with a total base value of 320mgKOH / 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 1.8kg of n-butanol, control the temperature at about 80°C, stir for 10 minutes; add 1.56kg of n-butyric acid and 3.2kg of water, stir 10 minutes; 100 minutes at a constant temperature of 95°C, the material thickened; adding 10.8kg of calcium hydroxide suspension with a solid content of 20% by weight, stirred for 10 minutes, added 2.4kg of 12-hydroxystearic acid, stirred for 10 minutes, Add 4.2kg of terephthalic acid, stir for 10 minutes, raise the temperature to 160°C under stirring, keep it for 45 minutes, and dehydrate; raise the tem...

Embodiment 2

[0066] This example is used to illustrate the complex calcium naphthenate-based lubricating grease prepared by the present invention.

[0067] Add 33kg of calcium naphthenate with a total alkali value of 400mgKOH / g and 15kg of calcium naphthenate with a total alkali value of 400mgKOH / g and 15kg of calcium naphthenate with a kinematic viscosity of 31mm 2 / s HVI150BS lubricating base oil, stir, heat up to 60°C, keep the temperature for 10 minutes; add 0.56kg of ethanol, control the temperature at about 60°C, stir for 10 minutes; add 3.36kg of propionic acid and 3.36kg of water, stir for 10 minutes; At 100°C for 70 minutes at a constant temperature, the material becomes thicker; add 5.2kg of calcium hydroxide suspension with a solid content of 50% by weight, stir for 10 minutes, add 2kg of 12-hydroxystearic acid, stir for 10 minutes, add 2.6kg of calcium hydroxide suspension For boric acid, stir for 10 minutes, heat up to 150°C under stirring, keep for 60 minutes, dehydrate; heat...

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Abstract

The invention discloses composite calcium naphthenate-based lubricating grease which is characterized by including following components, on the basis of the weight of the lubricating grease, 20-70 wt% of non-Newtonian calcium naphthenate, 1-10 wt% of a calcium salt of a higher fatty acid and 25-70 wt% of a basic oil. An infrared spectrogram of the non-Newtonian calcium naphthenate has a characteristic absorption peak of aragonite-type calcium carbonate. The invention also discloses a preparation method of the composite calcium naphthenate-based lubricating grease and the composite calcium naphthenate-based lubricating grease prepared through the same. The composite calcium naphthenate-based lubricating grease has excellent anti-corrosion property and anti-salt fog property, and has performances comprising a high-temperature-resistant performance, a water-resistant performance, an adhesive performance, a colloid stability and the like, which are better than those of composite calcium sulfonate-based lubricating grease. The composite calcium naphthenate-based lubricating grease has a longer lubricating service life. The preparation method is simple, environmental-protective, low in cost and stable in product quality.

Description

technical field [0001] The invention relates to lubricating grease, in particular to a compound 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 are CN1465560 and so on. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/06C10M177/00C10N30/12C10N30/06C10N30/08C10N50/10
Inventor 孙洪伟董禄虎郑会何懿峰段庆华张建荣陈政刘中其姜靓
Owner CHINA PETROLEUM & CHEM CORP
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