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Biodegradable lubricating grease

A biodegradable and lubricating grease technology, applied in lubricating compositions and other directions, to achieve the effect of excellent conventional physical and chemical properties

Inactive Publication Date: 2005-06-15
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, based on the total weight of the composition, comprising: (A) 70-94% vegetable oil, with a dynamic viscosity of 100-250mm at 40°C 2 / sec. (B) 6-30% thickener, said thickener is bentonite, or C 1 -C 20 (C) 0-2% amine antioxidant or phenolic and amine mixed antioxidant. The lubricating grease not only has excellent conventional physical and chemical properties, but also has good ecological characteristics. Even if it leaks during use, it will naturally degrade into water and carbon dioxide as time goes by, which meets the requirements of environmental protection. The lubricating grease provided by the invention is suitable for lubricating parts suitable for ordinary lubricating grease.

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