Unlock instant, AI-driven research and patent intelligence for your innovation.

Composite calcium naphthenate-based tetra-polyurea lubricating grease and preparation method thereof

A technology of calcium naphthenate-based tetrapolyurea grease and calcium naphthenate, applied in the field of grease, can solve problems such as the high price of calcium sulfonate with high base value, not being rapidly promoted, complicated preparation process, etc., and achieve cost Low, excellent corrosion resistance and salt spray resistance, the effect of simple preparation process

Active Publication Date: 2015-01-21
CHINA PETROLEUM & CHEM CORP +1
View PDF6 Cites 0 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Composite calcium naphthenate-based tetra-polyurea lubricating grease and preparation method thereof
  • Composite calcium naphthenate-based tetra-polyurea lubricating grease and preparation method thereof
  • Composite calcium naphthenate-based tetra-polyurea lubricating grease and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0023] The present invention also provides a preparation method of the above lubricating grease.

[0024] On the one hand, the present invention provides a kind of composite calcium naphthenate-based tetrapolyurea grease, based on grease weight, comprising the following components: 20-60% by weight of non-Newtonian calcium naphthenate; 1-10 % by weight of calcium salts of higher fatty acids; 0.5-25% by weight of polyurea compounds; 25-70% by weight of base oils, wherein the infrared spectrum of the non-Newtonian calcium naphthenate has that of aragonitic calcium carbonate Characteristic absorption peak, the polyurea compound is a tetrapolyurea compound.

[0025] 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.

[0026] Preferably, based on the weight of the grease, the following components are includ...

Embodiment 1

[0075] This example is used to illustrate the complex calcium naphthenate-based tetrapolyurea grease prepared in the present invention.

[0076] 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, heat up to 160°C under stirring, keep for 45 minutes, dehydrate, cool down to 120°C; add 10kg wit...

Embodiment 2

[0079] This example is used to illustrate the complex calcium naphthenate-based tetrapolyurea grease prepared in the present invention.

[0080] 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 Boric acid, stirred for 10 minutes, heated to 150°C under stirring, kept for 60 minutes, dehydrated, coo...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses composite calcium naphthenate-based tetra-polyurea lubricating grease which is characterized by including following components, on the basis of the weight of the lubricating grease, 20-60 wt% of non-Newtonian calcium naphthenate, 1-10 wt% of a calcium salt of a higher fatty acid, 0.5-25 wt% of a polyurea compound 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 polyurea compound is a tetra-polyurea compound. The invention also discloses a preparation method of the composite calcium naphthenate-based tetra-polyurea lubricating grease and the composite calcium naphthenate-based tetra-polyurea lubricating grease prepared through the same. The composite calcium naphthenate-based tetra-polyurea 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 a composite calcium sulfonate-based tetra-polyurea lubricating grease. The composite calcium naphthenate-based tetra-polyurea lubricating grease has a longer lubricating service life.

Description

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

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/06C10M177/00C10N30/06C10N30/12C10N50/10
Inventor 孙洪伟郑会董禄虎何懿峰段庆华张建荣陈政刘中其姜靓
Owner CHINA PETROLEUM & CHEM CORP