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Composite zirconium-based urea bipolymer grease and preparation method thereof

A technology of composite zirconium-based dipolyurea grease and grease, which is applied in lubricating compositions, petroleum industry, thickeners, etc., can solve the problems of insufficient extreme pressure and mechanical stability, poor susceptibility of additives, and difficulty in obtaining raw materials and other problems, to achieve the effect of excellent water resistance, stable product quality and long lubrication life

Active Publication Date: 2013-03-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There is US 4189387 patent for preparing zirconium-based lubricating grease with zirconium salt as thickener. Grease has good extreme pressure properties, but the dropping point is not high, and the thickener of the product with relatively good effect contains fluorine elements, and the raw materials are not easy to obtain
There are many existing patents for dipolyurea-based grease, but its extreme pressure and mechanical stability are insufficient. It needs to be improved by adding additives, but the sensitivity of additives is not good.

Method used

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  • Composite zirconium-based urea bipolymer grease and preparation method thereof
  • Composite zirconium-based urea bipolymer grease and preparation method thereof
  • Composite zirconium-based urea bipolymer grease and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Raw material component: ZrO(OH) 2 (3.4kg); 12-hydroxystearic acid (4.8kg); phthalic acid (2.6kg); octadecylamine (1.5kg); MDI (0.7kg); 500SN (40kg); p-diisooctane Diphenylamine (0.1kg).

[0034] Add 4.8kg of 12-hydroxystearic acid and 15kg of 100℃ kinematic viscosity to 11mm in a 110L atmospheric pressure reactor with heating, stirring, circulation and cooling. 2 / s HVI500SN lubricating base oil, stirring, heating to 80℃, constant temperature for 10 minutes; adding 3.4kg ZrO(OH) 2 , The temperature is controlled at about 90℃, stirring for 60 minutes; heating up to 110℃ under stirring, adding 2.6kg of phthalic acid to react for 30 minutes;

[0035] Add 5kg of 500SN base oil to another 5L atmospheric pressure reactor with heating, stirring, circulation and cooling, preheat to 90℃ and add 0.7kg MDI and stir quickly for 4 minutes, add 1.5kg octadecylamine under rapid stirring After stirring for 4 minutes, the molar ratio of the added MDI to octadecylamine is 1:2, and the tempera...

Embodiment 2

[0041] Raw material component: ZrO(OH) 2 (3.4kg); Stearic acid (4.55kg); Terephthalic acid (2.66kg); Stearylamine (1.5kg); MDI (0.7kg); PAO 10 (110kg); N-phenyl-α-naphthalene Amine (0.12kg).

[0042] Add 4.55kg stearic acid, 2.66kg terephthalic acid and 40kg 100℃ kinematic viscosity to a 150L atmospheric pressure reactor with heating, stirring, circulation and cooling. The viscosity is 10mm. 2 / s PAO 10 lubricating base oil, stirring, heating to 80℃, constant temperature for 10 minutes; adding 3.4kg ZrO(OH) 2 , The temperature is controlled at about 90 ℃, stirring for 90 minutes, heating up to catch the water; after the water is finished, add 0.7kg MDI and stir quickly for 4 minutes, add 1.5kg octadecylamine under rapid stirring, stir for 4 minutes, the added MDI and eighteen The molar ratio of amine is 1:2, the temperature is kept at 120°C for 20 minutes, and finally the temperature is raised to 200°C for 5 minutes. Then, it was cooled to 160°C, and 70kg of PAO 10 lubricating ba...

Embodiment 3

[0045] Raw material component: ZrO 2 (6kg); 12-hydroxystearic acid (4.8kg); isophthalic acid (8kg); dodecylamine (1.31kg); MDI (0.89kg); PAO 6 (50kg); p-diisooctyl Diphenylamine (0.2kg).

[0046] Prepare composite zirconium-based dipolyurea grease according to the method of Example 1, except that the monoamine used is dodecylamine, ZrO 2 The dosage of 12-hydroxystearic acid and isophthalic acid also changes. The performance data of the finished lubricating grease is shown in Table 1.

[0047] In the grease obtained in this example, based on the weight of the grease, the composition is: dipolyurea 3.1%; lubricating base oil 70.4%; 12-hydroxystearate zirconyl 7.9%; zirconyl terephthalate 18.3% ; P-Diisooctyl diphenylamine 0.3%. The molar ratio of isophthalic acid to 12-hydroxystearic acid is 3:1.

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Abstract

The invention provides composite zirconium-based urea bipolymer grease and a preparation method thereof. The composite zirconium-based urea bipolymer grease comprises: by weight, 1) 1 to 59% of composite zirconium which is produced by a reaction of at least one higher fatty acid, at least one aromatic acid, and an oxide and / or a hydroxide of zirconium, wherein a mole ratio of the at least one aromatic acid to the at least one higher fatty acid is (0.5 to 7): 1, 2) 1 to 59% of a urea bipolymer, and 3) 40 to 95% of lubrication base oil. The composite zirconium-based urea bipolymer grease contains the composite zirconium as a densifier and the urea bipolymer. The composite zirconium-based urea bipolymer grease has excellent extreme pressure wear resistance, a long lubrication life, good water resistance, colloid stability, a high dropping point and good heat stability.

Description

Technical field [0001] The invention relates to a lubricant, specifically a composite zirconium-based dipolyurea grease and a preparation method thereof. Background technique [0002] As a transition metal element, zirconium belongs to group IVB and is located in the fifth period. Zirconium-containing compounds have excellent lubricating effect and are often used as lubricating additives. For example, CN 101113382 and JP1973038444 use zirconium oxides as lubricant additives to improve wear resistance; WO2007143414 and US 20060063682 introduce zirconium tetrafluoride as a wear-reducing additive Become one of the components of lubricants; US 20060254823 found that lubricants containing 2-ethylhexanoate zirconium salt showed good resistance to heavy loads and wear resistance; US 20050043189 found that fluorozirconates such as aluminum fluorozirconate can be used as Oxidation inhibitors are used in lubricants; DE 102004021812 found that adding inorganic salts such as zirconium carbo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M123/02C10M169/06C10M177/00C10N30/06C10N50/10
Inventor 何懿峰孙洪伟段庆华刘中其姜靓
Owner CHINA PETROLEUM & CHEM CORP
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