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

Method for preparing low-noise urea-base grease

A urea-based grease, low-noise technology, applied in lubricating compositions, base materials, additives, etc., can solve the problems of uneconomical, high cost of ester oil, rising working temperature, etc., and achieve the effect of reducing costs and reducing dosage

Active Publication Date: 2008-10-15
CHINA PETROLEUM & CHEM CORP +1
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the performance improvement and popularization of modern office equipment, household appliances and various instruments and machinery, miniaturization, light weight, long life, less maintenance, low noise and high efficiency have become their development direction. While being compact, light and thin, it is also required to improve efficiency, and the miniaturized design increases the density of parts and increases the operating temperature, all of which put forward strict requirements for lubrication. Although lithium-based grease can meet the needs of low noise, but In the face of higher and higher operating temperatures, which cannot meet the requirements of low noise, it is generally believed that urea-based grease is more suitable for high-temperature lubrication.
[0003] It has been found that ester oil has the effect of reducing noise, but the cost of ester oil is relatively high, and it is uneconomical to use ester oil as a base oil entirely

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
  • Method for preparing low-noise urea-base grease

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Add octadecylamine (61.27g) and p-toluidine (10.44g) to 450g 40°C viscosity 110mm 2 / s paraffin-based mineral oil (MIN), heated until the organic amine was completely dissolved, then added 29.29g 2,4-toluene-diisocyanate (TDI) to 450g of the same MIN, heated to dissolve, and then added TDI- Add the oil to the organic amine-stir well in the oil to make the organic amine and TDI completely react. At this time, the temperature of the material rises to 100-120°C. Stir at this temperature and keep the temperature for 30min. After cooling to 30°C, add 65.1g of sebacic acid di Isooctyl ester (DOS, viscosity 14.67mm at 40°C 2 / s) As a shock absorber, grind evenly on a three-roller mill.

Embodiment 2

[0019] Add dodecylamine (20.35g) and aniline (15.33g) to 420g 40°C viscosity 65.2mm 2 / s PAO, heat until the organic amine is completely dissolved, then add 34.32g 4,4'-diphenylmethane diisocyanate (MDI) into the same (420g) PAO, heat until the MDI dissolves, then add MDI- Add the oil into the organic amine-oil and stir fully to make the organic amine and MDI react completely. At this time, the temperature of the material rises to 100-120°C, stir at this temperature and keep the temperature for 30min, and add 68.5g of dipentaerythritol ester after cooling to 40°C ( PE 1 , Viscosity 20mm at 40°C 2 / s) As a shock absorber, grind evenly on a three-roller mill.

Embodiment 3

[0021] Add octadecylamine (26.61g) and p-toluidine (24.7g) to 440g 40°C viscosity 46.7mm 2 / s PAO, heat until the organic amine is completely dissolved, then add 28.67g 2,4-toluene-diisocyanate (TDI) into 460g of the same MIN, heat until it dissolves, then add TDI-oil to organic amine-oil Stir fully in the medium to make the organic amine and TDI react completely. At this time, the temperature of the material rises to 100-120°C, stir at this temperature and keep the temperature for 30min, and finally add 99g of trimethylolpropane ester (TMP 1 , Viscosity 16.8mm at 40°C 2 / s) As a shock absorber, grind evenly on a three-roller mill.

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

PropertyMeasurementUnit
Viscosityaaaaaaaaaa
Login to View More

Abstract

The invention provides a kind of preparation method of low noise ureido grease lubricant, including: melting organic amine and diisocyanate in basis oil respectively, and then mix them and react, adding ester oil after the temperature has lowered to 10-50 degree C, the said organic amine is the compound of C12-C18 alkylamine and C6-C8 aromatic amine, the weight ratio of them is 10 : 1-1: 1.6, The thickening agent that diisocyanate and organic amine react and generate accounts for 3-20% of general weight of grease weight, the add amount of ester oil is 5-15% of grease lubricant weight. The preparation method that provided in this invention adds ester oil in later reaction stage, has decreased the dosage of the ester oily in grease lubricant, reduced the product cost, moreover the noise of the ureido grease lubricant approaches the effect that using entire ester oil to make the ureido grease lubricant .

Description

technical field [0001] The present invention relates to the preparation method of lubricating grease Background technique [0002] With the performance improvement and popularization of modern office equipment, household appliances and various instruments and machinery, miniaturization, light weight, long life, less maintenance, low noise and high efficiency have become their development direction. While being compact, light and thin, it is also required to improve efficiency, and the miniaturized design increases the density of parts and increases the operating temperature, all of which put forward strict requirements for lubrication. Although lithium-based grease can meet the needs of low noise, but Faced with the increasingly high operating temperature and the inability to meet the requirements of low noise, it is generally believed that urea-based grease is more suitable for high-temperature lubrication. [0003] It has been found that ester oil has the effect of reduci...

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): C10M133/22C10M101/02C10M107/02
Inventor 姚立丹杨海宁郭丽阳
Owner CHINA PETROLEUM & CHEM CORP