Composite zirconium-based urea tetramer grease and preparation method thereof

A technology of zirconium-based tetrapolyurea lubricating grease and lubricating grease, which can be used in lubricating compositions, petroleum industry, thickeners, etc. It can solve the problems of insufficient dropping point and difficult availability of raw materials, and achieve excellent water resistance and product quality The effect of stability and simple preparation process

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. The thickener only contains a kind of zirconium salt, which is made by reacting hypophosphorous acid or monocarboxylic acid substituted by alkyl with zirconium hydroxide. The resulting product is very Good compressibility, but the drop point is not high enough, and the thickener of the product with relatively good effect contains fluorine element, and the raw material is not easy to obtain

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Raw material components: ZrO(OH) 2 (3.4kg); 12-hydroxystearic acid (4.8kg); phthalic acid (2.6kg); octadecylamine (1.08kg); ethylenediamine (0.12kg); MDI (1kg); 500SN (40kg) ; p-p-Diisooctyldiphenylamine (0.1 kg).

[0040] Add 4.8kg of 12-hydroxystearic acid and 15kg of 100°C kinematic viscosity to 11mm in a volume of 110L with heating, stirring, circulation, and cooling. 2 / s HVI500SN lubricating base oil, stir, heat up to 80°C, keep the temperature for 10 minutes; add 3.4kg ZrO(OH) 2 , the temperature was controlled at about 90°C, and stirred for 60 minutes; the temperature was raised to 110°C while stirring, and 2.6kg of phthalic acid was added to react for 30 minutes.

[0041] Add 5kg of 500SN base oil to another normal-pressure reactor with a volume of 5L and equipped with heating, stirring, circulation, and cooling, preheat to 90°C, add 1kg of MDI and stir rapidly for 4 minutes, then add 0.12kg of ethylenediamine under rapid stirring , stirred for 4 minutes, ad...

Embodiment 2

[0047] Raw material components: ZrO(OH) 2 (3.4kg); Stearic acid (4.55kg); Terephthalic acid (2.66kg); Octadecylamine (1.08kg); Ethylenediamine (0.12kg); MDI (1kg); PAO 10 (110kg); N -Phenyl-α-naphthylamine (0.12 kg).

[0048] Add 4.55kg of stearic acid and 40kg of stearic acid and 40kg of stearic acid in a normal pressure reactor with a volume of 150L and heating, stirring, circulation and cooling. 2 / s PAO 10 lubricating base oil, stir, heat up to 80°C, keep the temperature for 10 minutes; add 3.4kg ZrO(OH) 2 , the temperature is controlled at about 90°C, and stirred for 60 minutes; the temperature is raised to 130°C under stirring, and 2.66kg of terephthalic acid is added to react for 30 minutes; Ethylenediamine, stirred for 4 minutes, added 1.08kg of octadecylamine and stirred for 4 minutes, the molar ratio of the added MDI, ethylenediamine and octadecylamine was 2:1:2, kept at 120°C for 20 minutes, and finally heated up to 200 ℃ for 5 minutes. Then, cool to 160°C, add ...

Embodiment 3

[0051] Raw material composition: ZrO 2 (6kg); 12-hydroxystearic acid (4.8kg); isophthalic acid (8kg); dodecylamine (0.88kg); ethylenediamine (0.14kg); MDI (1.18kg); PAO 6 (50kg) ; p-p-Diisooctyldiphenylamine (0.2 kg).

[0052] Prepare composite zirconium-based tetrapolyurea grease by the method of example 1, the difference is that the monoamine used is dodecylamine, ZrO 2 , 12-hydroxystearic acid and isophthalic acid are also changed, and the performance data of the finished lubricating grease are shown in Table 1.

[0053] In the lubricating grease that present embodiment obtains, take the lubricating grease weight as a benchmark, consist of: tetrapolyurea 3.1%; lubricating base oil 70.4%; 12-hydroxyzirconyl stearate 7.9%; ; p-diisooctyldiphenylamine 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 tetramer grease and a preparation method thereof. The composite zirconium-based urea tetramer 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, 2) 1 to 59% of a urea tetramer, and 3) 40 to 95% of lubrication base oil. The composite zirconium-based urea tetramer grease contains the composite zirconium as a densifier and the urea tetramer. The composite zirconium-based urea tetramer 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, in particular to a composite zirconium-based tetrapolyurea lubricating 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 effects 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 describe that zirconium tetrafluoride can be used as a wear-reducing additive Become one of the components of lubricants; US 20060254823 found that lubricants containing zirconium 2-ethylhexanoate exhibited good heavy load and anti-wear properties; 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 ...

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 何懿峰孙洪伟刘磊段庆华刘中其姜靓
Owner CHINA PETROLEUM & CHEM CORP
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