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Composite calcium-zirconium-based lubricating grease and preparation method thereof

A technology of zirconium-based lubricating grease and lubricating grease, which is applied in the field of lubricating grease, can solve the problems that other properties of lubricating grease need to be further improved, and achieve the effects of low cost, improved colloidal stability, and stable product quality

Active Publication Date: 2015-04-15
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The patent for preparing zirconium-based grease with zirconium salt as a thickener is US4189387. The thickener is made by reacting organic hypophosphorous acid or monocarboxylic acid with zirconium hydroxide. The prepared grease has good extreme pressure resistance. abrasiveness, but other properties of grease still need to be further improved

Method used

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  • Composite calcium-zirconium-based lubricating grease and preparation method thereof

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preparation example Construction

[0030] In a second aspect, the present invention provides a method for preparing a composite calcium-zirconium-based grease, the method comprising:

[0031] (1) Mix Component A, Component B and Component C in the base oil, and saponify by heating and draining water, wherein Component A is a mixture of higher fatty acids and aromatic acids, and Component B is calcium oxide and / or Hydroxide, component C is at least one of zirconium oxide, zirconium hydroxide and alkoxy zirconium;

[0032] (2) Heat up the temperature of the reaction mixture obtained in step (1) to 180-230°C for constant temperature refining, add the remaining base oil, cool, and add necessary additives to obtain the finished product.

[0033] According to the present invention, although the composite calcium-zirconium-based grease is prepared according to the above method, the purpose of the present invention can be achieved, that is, the prepared composite calcium-zirconium-based grease has good high temperature...

Embodiment 1

[0046] This example is used to illustrate the composite calcium-zirconium-based lubricating grease prepared by the present invention.

[0047] Put 150g of HVI500SN lubricating base oil (100℃ kinematic viscosity is 10mm 2 / s, the same below), 48g of 12-hydroxystearic acid and 26.6g of phthalic acid were added to the normal pressure fat kettle, stirred, heated to 75°C, 31.5g of zirconium n-propoxide, 3.6g of Ca(OH) 2 and 15.3g Zr(OH) 4 Add it successively to react, the molar ratio of calcium and zirconium is 1:4, calculated by zirconium, Zr(OH) 4 The molar ratio with zirconium n-propoxide is 1:1, heat up to 105°C, drain and saponify, then heat up to 200°C for 10 minutes, add 200g of HVI500SN lubricating base oil, stir and cool down, wait until the temperature cools down to 110°C, circulate filter and homogenize , Degassing to get the finished product. The test results are shown in Table 1.

[0048] In the lubricating grease obtained in this embodiment, based on the weight of...

Embodiment 2

[0050] This example is used to illustrate the composite calcium-zirconium-based lubricating grease prepared by the present invention.

[0051] Put 400g of HVI150BS lubricating base oil (100℃ kinematic viscosity is 30mm 2 / s, the same below), 48g of 12-hydroxystearic acid and 80g of isophthalic acid were added to the normal pressure fat kettle, stirred, heated to 90 ° C, and 17g of Ca(OH) 2 , 8.9g Zr(OH) 4 and 76g of zirconium ethylate were successively added to react, the molar ratio of calcium to zirconium was 1:1.5, calculated as zirconium, Zr(OH) 4 The molar ratio with zirconium ethylate is 1:5, heat up to 120°C, drain and saponify, then heat up to 230°C and keep the temperature for 5 minutes, add 600g of HVI150BS lubricating base oil, stir and cool down, wait until the temperature is cooled to 120°C, circulate filtration, homogenize, Degassing to get the finished product. The test results are shown in Table 1.

[0052] In the lubricating grease obtained in this embodim...

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Abstract

The invention discloses composite calcium-zirconium-based lubricating grease which comprises following components, on the basis of the weight of the lubricating grease, by weight, 5-50% of a composite calcium-zirconium-based thickening agent and 50-95% of basic oil, wherein the composite calcium-zirconium-based thickening agent is a calcium-zirconium soap generated through a reaction among a component A, a component B and a component C. The component A is a mixture composed of a higher fatty acid and an aromatic acid. The component B is an oxide and / or a hydroxide of calcium. The component C is at least one of an oxide of zirconium, a hydroxide of zirconium and alkoxyl zirconium. The invention also discloses a preparation method of the composite calcium-zirconium-based lubricating grease. Compared with zirconium-based lubricating grease, the composite calcium-zirconium-based lubricating grease is better in high-temperature resistance, mechanical stability, water resistance, adhesivity, salt fog resistance, colloid stability and extreme-pressure wear resistance. The lubricating grease is simple in the preparation method, is low in cost and is stable in quality.

Description

technical field [0001] The invention relates to lubricating grease, in particular to a composite calcium-zirconium-based 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, CN101113382 and JP1973038444 use zirconium oxides as lubricant additives to improve wear resistance; WO2007143414 and US20060063682 describe that zirconium tetrafluoride can be used as a wear-reducing additive to become a lubricating One of the components of lubricants; US20060254823 found that lubricants containing zirconium 2-ethylhexanoate exhibited good heavy load and anti-wear properties; US20050043189 found that fluorozirconates such as aluminum fluorozirconate can be used as oxidation inhibitors In lubricants; DE102004021812 found that adding inorga...

Claims

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Application Information

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IPC IPC(8): C10M121/04C10M169/06C10M177/00C10N30/06C10N30/08
Inventor 何懿峰孙洪伟刘中其段庆华张建荣姜靓陈政郑会
Owner CHINA PETROLEUM & CHEM CORP
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