Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Composite calcium-base lubricating grease and its prepn

A technology of composite calcium base and lubricating grease, which is applied in the direction of lubricating compositions, petroleum industry, additives, etc., can solve the problems of complex production raw materials and processes, and achieve the effects of small change in surface hardening value, good oxidation stability, and easy operation

Active Publication Date: 2007-01-03
CHINA PETROLEUM & CHEM CORP +1
View PDF4 Cites 34 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of product needs to be mixed with calcium complex and polyurea, and the production materials and processes are relatively complicated.

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-base lubricating grease and its prepn
  • Composite calcium-base lubricating grease and its prepn
  • Composite calcium-base lubricating grease and its prepn

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] In this example, the first method is used to prepare complex calcium-based grease.

[0052] At room temperature, take 630g of 500SN with a viscosity of 15cSt at 100°C, 1000ml of absolute ethanol and 120g of tetrabutyl titanate into the fat-making kettle, stir for 2 hours, add 62g of 12-hydroxystearic acid, and stir at 50°C for 4 hours. Thereafter, add 8.1 g of glacial acetic acid and 1.94 g of n-octanoic acid, stir evenly, then add 40.8 g of calcium hydroxide suspension with a concentration of 16.6% by weight, stir, continue to heat up to 220° C., and add 320 g of quenching oil. When the temperature drops below 70°C, take out the kettle. Grind twice with a three-wheel mill. The composition and properties of the product are shown in Table 1. The content of each component in the lubricating grease is 89.9% of base oil, 7.5% of thickener and 2.6% of titanium dioxide.

Embodiment 2

[0054] In this example, the second method is used to prepare complex calcium-based grease.

[0055] Add 47g of titanium tetrachloride to a beaker containing 100g of benzene under uniform stirring, slowly add 427g of isopropanol, and add 5mol / L ammonia water until the pH value is 6.5. After the reaction stopped, the reaction product was left to stand for 10 hours and then filtered, the ammonium chloride precipitate was separated from the titanium isopropoxide, and the filtrate titanium alkoxide was hydrolyzed with boiling water, and vigorously stirred to form a gel. Put it in a grease kettle.

[0056] Add 600g of ester oil with a viscosity of 20cSt at 100°C to this kettle, add 728g of calcium hydroxide suspension with a concentration of 12.5% ​​by weight, and after rapid stirring, add 118.28g of benzoic acid and 28.29g of boric acid, and add at 88°C 12-Hydroxystearic acid 98.18g, thereafter the temperature was gradually raised to 240°C, and 250g of quenching oil was added. Wh...

Embodiment 3

[0058] In this example, the first method is used to prepare complex calcium-based grease.

[0059] At room temperature, take 500g of 500SN with a viscosity of 15cSt at 100°C, 800ml of acetone, and 118g of tetrabutyl titanate into the fat-making kettle. After stirring for 3 hours, add 66g of 12-hydroxystearic acid. After stirring at 60°C for 6 hours, add ice Acetic acid 66g, adding concentration is 326g of calcium hydroxide solution of 15% by weight, gradually heating up to 220 ℃, adding 270g of quenching oil. When the temperature drops below 70°C, take out the kettle. Grind twice with a three-wheel mill. The content of each component in the lubricating grease is 18.4% of thickener, 78.6% of base oil and 3.0% of titanium dioxide. The composition and properties of the product are shown in Table 1.

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 present invention relates to one kind of composite calcium-base lubricating grease, which consists of base oil in 68-95 wt%, composite calcium-base thickener 4-30 wt% and titania 0.1-8 wt%, and the titania in the lubricant grease is preferably nanometer level particles. The present invention also provides three kinds of preparation process of the lubricant grease. The composite calcium-base lubricating grease of the present invention has the features of high oxidation stability, small surface hardening value change, high dropping point and high extreme pressure wear resistance, and may be used for lubricating at relatively high temperature and humidity condition and heavy load.

Description

technical field [0001] The invention relates to lubricating grease and a preparation method thereof, in particular to complex calcium-based lubricating grease and a preparation method thereof. Background technique [0002] Calcium complex lubricating grease is a high-quality lubricating grease with high temperature resistance, pressure resistance and wide application. It has good mechanical stability and colloidal stability. [0003] At present, the production process of complex calcium-based grease can be divided into three stages: saponification, compounding, and thickening into grease. For example, in US 4,787,992, C10-C20 synthetic fatty acids, middle molecular acids and glacial acetic acid are reacted with calcium hydroxide. [0004] In recent years, in order to improve the performance of complex calcium-based grease, polyurea grease has been introduced into it. This is because calcium-based grease has the defect of surface hardening, which brings inconvenience in use ...

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
IPC IPC(8): C10M125/10
Inventor 孙洪伟刘大军姚智勤杨玮王平王金凤
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com