Polyurea-based grease additive composition

A technology of polyurea-based grease and composition, applied in the field of grease, can solve the problems such as the lack of in-depth discussion on the extreme pressure and anti-wear performance of grease, and the lack of in-depth discussion, and achieve the effect of good high temperature performance and good water resistance

Inactive Publication Date: 2012-06-20
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN 1408825 focuses on the preparation method of a polyurea grease with transparent appearance; CN 1272530 and EP 0274756 focus on the preparation method of a high dropping point diurea grease, and does not discuss other properties in depth; WO 2009145825 Emphatically introduced the lubricating grease prepared by high-viscosity PAO oil and polyurea thickener to investigate its extreme pressure and anti-wear performance through SRV; Conventional physical and chemical indicators of grease, but no in-depth discussion of extreme pressure and anti-wear properties of grease

Method used

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  • Polyurea-based grease additive composition
  • Polyurea-based grease additive composition
  • Polyurea-based grease additive composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Composition (I) comprises:

[0032] The mass fraction is 0.2% sulfurized isobutylene; extreme pressure agent

[0033] The mass fraction is 0.2% dialkyl dithiophosphate; extreme pressure agent

[0034] The mass fraction is 0.1% dialkyl dithiocarbamate; extreme pressure agent

[0035] The mass fraction is 0.2% triphenyl thiophosphate; antiwear agent

[0036] The mass fraction is 0.3% borated fatty acid ester; antiwear agent

[0037] Parts by mass are 0.5% fatty acid amide; rust inhibitor

[0038] The mass fraction is 0.5% dinonyldiphenylamine. antioxidant

[0039] The mass fraction is 0.5% polymethyl methacrylate. Tackifier

[0040] 3.2% by mass of MDI is added to 46.3% by mass of autoclave oil, heated to 60°C, and simultaneously 1.6% by mass of octylamine and 1.2% by mass of aniline are added to the mass fraction of Heat 18.5% oil to 90°C, keep the temperature constant for 1 hour, continue heating to 120°C, hold the constant temperature for 1 hour, continue to r...

Embodiment 2

[0058] Composition (III) includes:

[0059] The mass fraction is 1.2% sulfurized isobutylene; extreme pressure agent

[0060] The mass fraction is 1.2% dialkyl dithiophosphate; extreme pressure agent

[0061] The mass fraction is 0.6% dialkyl dithiocarbamate; extreme pressure agent

[0062] Parts by mass are 3% succinimide; rust inhibitor

[0063] Parts by mass are 1.5% borated fatty acid ester; antiwear agent

[0064] The mass fraction is 3% dinonyldiphenylamine. antioxidant

[0065] The mass fraction is 3% polyisobutylene. Tackifier

[0066] 6.4% by mass of MDI is added to 40.5% by mass of autoclave oil, heated to 60°C, while 3.2% by mass of dodecylamine and 2.4% by mass of aniline are added to the mass fraction The parts are 18.7% in oil and heated to 90°C, constant temperature for 1 hour, continue to heat to 130°C, constant temperature for 1 hour, continue to heat up the material to 170°C, constant temperature for 10 minutes (the new type of grease composition is fur...

Embodiment 3

[0084] Composition (V) comprises:

[0085] The mass fraction is 0.6% sulfurized isobutylene; extreme pressure agent

[0086] The mass fraction is 0.6% dialkyl dithiophosphate; extreme pressure agent

[0087] The mass fraction is 0.3% dialkyl dithiocarbamate; extreme pressure agent

[0088] Parts by mass are 1.5% fatty acid amide; rust inhibitor

[0089] Parts by mass are 1.5% triphenyl thiophosphate; antiwear agent

[0090] The mass fraction is 1.5% dinonyl diphenylamine; Antioxidant

[0091] Parts by mass are 1.5% polymethyl methacrylate; tackifier

[0092] The mass fraction is 1.5% polyisobutylene. Tackifier

[0093] 3.2% by mass of MDI was added to 38.5% by mass of autoclave oil, heated to 70°C, while 1.6% by mass of dodecylamine and 1.2% by mass of aniline were added to the mass fraction Parts are 20.7% in oil heated to 90 ° C, constant temperature for 1 hour, continue to heat to 125 ° C, constant temperature for 2 hours, continue to heat up the material to 180 ° C...

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Abstract

The invention relates to a polyurea-based grease additive composition. Components and percentage content of the polyurea-based grease additive composition are that: base oil is mineral oil and synthetic oil or blending oil of the mineral oil and the synthetic oil, and the content of the base oil is from 71% to 91.5%; a thickening agent is composed of a common reactant of isocyanate, fatty amine and alicyclic amine, and the content of the thickening agent is from 6% to 12%; an antioxidant uses amine antioxidants, and the total content of the antioxidant is from 0.5% to 3%; an extreme-pressure agent uses a mixture of sulfurized isobutylene, dialkyl group dithiophosphate and dialkyl group dithiocarbamic acid, and the total content of the extreme-pressure agent is from 0.5% to 5%; the content of an antirusting agent is from 0.5% to 3%; an antiwear agent is triphenyl thiophosphate and thiophosphoric acid ester or a mixture of the triphenyl thiophosphate and the thiophosphoric acid ester, and the total content of the antiwear agent is from 0.5% to 3%; and tackifier is polyisobutene and polymethyl methacrylate or a mixture of the polyisobutene and the polymethyl methacrylate, and the total content of the tackifier is from 0.5% to 3%. Due to the fact that appropriate raw material proportion is selected and used, grease has good high-temperature performance, a dropping point is higher than 260 DEG C, and the polyurea-based grease additive composition has a good water-resisting property, high and low temperature resistance and extreme pressure anti-wear performance, and can be applied to lubrication of each key running part of a continuous casing machine.

Description

technical field [0001] The invention belongs to the technical field of lubricating grease, in particular to a polyurea-based lubricating grease additive composition. Background technique [0002] The invention relates to a polyurea lubricating grease additive composition, in particular to a polyurea-based lubricating grease additive composition which has good water resistance, high and low temperature properties, extreme pressure and anti-wear properties and can be pumped over a long distance. [0003] Polyurea greases are made by reacting amines with isocyanates. CN 1408825 focuses on the preparation method of a polyurea grease with transparent appearance; CN 1272530 and EP 0274756 focus on the preparation method of a high dropping point diurea grease, and does not discuss other properties in depth; WO 2009145825 Emphatically introduced the lubricating grease prepared by high-viscosity PAO oil and polyurea thickener to investigate its extreme pressure and anti-wear perform...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/06C10N50/10C10N30/06
Inventor 刘志颖刘庆廉吴宝杰李勇
Owner CHINA PETROLEUM & CHEM CORP
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