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Biodegradable lubricating grease

A technology of biodegradation and lubricating grease, applied in the direction of lubricating compositions, etc., to achieve the effect of excellent conventional physical and chemical properties

Inactive Publication Date: 2004-06-16
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All this makes traditional industrial lubricants face extremely severe challenges

Method used

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  • Biodegradable lubricating grease

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] composition:

[0021] Castor Oil: 75Wt%

[0022] Complex calcium thickener: 25Wt%

[0023] In the thickener: organic acid: calcium hydroxide = 2:1;

[0024] 12-hydroxystearic acid: octanoic acid: glacial acetic acid = 1:0.5:5

[0025] preparation:

[0026] Add molten calcium hydroxide to 1 / 2 of the base oil, add glacial acetic acid at room temperature, add n-octanoic acid when heated to about 50°C, add 12-hydroxystearic acid at around 80°C, heat up to 210°C and add remaining 1 / 2 base oil, ground three times after cooling.

Embodiment 2

[0028] composition:

[0029] Castor oil: 79.5Wt%

[0030] Composite calcium thickener: 20Wt%

[0031] Alkylated diphenylamine (SIBA Refining, L-57): 0.5wt%

[0032] In the thickener: 12-hydroxystearic acid: n-octanoic acid: glacial acetic acid = 1:0.29:5;

[0033] Organic acid: calcium hydroxide = 2:1.

[0034] Preparation: same as Example 1, just add antioxidant when cooling.

Embodiment 3

[0036] composition

[0037] Castor Oil: 89Wt%

[0038] Anhydrous calcium thickener: 11Wt%

[0039] Thickener: 12-hydroxystearic acid: calcium hydroxide = 2:1, excess calcium hydroxide 5%

[0040] preparation:

[0041] Mix 12-hydroxystearic acid and base oil, heat up to 80-85°C, add calcium hydroxide alkali solution after acid dissolution, heat up to 135°C after saponification, cool and grind three times.

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Abstract

A biodegradable lubricating grease comprises (overall composition weight as benchmark) (1) 70-94% vegetable oil whose kinetic viscosity is 100-250 square mm per second, (2) 6-30% thickening agent, wherein the thickening agent is alta-mud, or single saponin or composite saponin produced through the reaction of C1-C20 organic acid with calcium hydroxide, calcium oxide, lithium hydroxide or lithium oxide, (3) 0-2% amine antioxidant or phenol and amine mixed anti-oxidant. The lubricating grease possesses both fine normal physical chemical properties and good bio-ecological characteristics.

Description

technical field [0001] The invention belongs to industrial lubricants, in particular to a lubricating grease composition. technical background [0002] Due to penetration, leakage, overflow and improper handling, industrial lubricants are likely to cause soil, water and air pollution, and damage the ecological environment and ecological balance, which has become a real problem that cannot be ignored. According to material reports, the impact of general mineral lubricants on groundwater can reach 100 years. A small amount of lubricant not only hinders the growth of plants, but also poisons aquatic organisms. About 0.1 μg / g mineral oil can reduce the life span of aquatic shellfish by 20%. Germany has listed lubricants containing additives as harmful to water, and lubricants without additives are also classified as quasi-hazardous substances. All these make traditional industrial lubricants face extremely severe challenges. [0003] Europe, the United States, Japan and other...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04
Inventor 姚智勤杨玮孙洪伟
Owner CHINA PETROLEUM & CHEM CORP
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