Composite of food-grade compound calcium sulfonate-base lubricating grease and preparation method thereof

A compound calcium sulfonate-based lubricating grease and the technology of synthesizing calcium sulfonate, applied in the field of lubricating grease, can solve the problems of endangering human health and insufficient refining of base oil of ordinary lubricating grease, and achieve excellent water resistance and excellent mechanical stability The effect of high temperature resistance and excellent high temperature resistance

Inactive Publication Date: 2013-01-30
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The potential harm caused by non-food lubricants to food safety has aroused people's great attention. The base oil of ordinary lubricating grease is not refined enough, and contains more carcinogens-polycyclic aromatic hydrocarbons, which seriously endanger human health. Therefore, ordinary lubricating grease cannot be used in food production

Method used

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  • Composite of food-grade compound calcium sulfonate-base lubricating grease and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Food grade compound calcium sulfonate formula components and percentage content: high alkali value synthetic calcium sulfonate 50%, stearic acid 3.5%, calcium borate 2.5%, calcium hydroxide 2.5%, acetic acid 1.25%, base oil white Oil 39.4%, Antioxidant Dilauryl Thiodipropionate 0.85%.

[0031] Put 1500g of high alkali value synthetic calcium sulfonate with a base value of 400mgKOH / g, 150g of water and ethanol mixture (the mass ratio of water and ethanol is 1:1) into a normal pressure reactor, heat up to 60-80°C, and add acetic acid 37.5g for the conversion of calcite structure calcium carbonate, keep the temperature for 60 minutes and then raise the temperature, add 75g of calcium hydroxide and 105g of stearic acid to the system in sequence at 90-100°C, and continue to heat up after 120 minutes of constant temperature reaction, at 130-140°C After keeping the temperature for 1 hour, add 75g of calcium borate, raise the temperature to 200°C and keep the temperature for 5 ...

Embodiment 2

[0033] Food grade compound calcium sulfonate formula components and percentage content: high alkali value synthetic calcium sulfonate 60%, stearic acid 2%, calcium borate 1%, calcium hydroxide 1%, acetic acid 1%, base oil white Oil 34%, Antioxidant Dilauryl Thiodipropionate 1%.

[0034] Put 2400g of high base value synthetic calcium sulfonate with a base value of 320mgKOH / g, 240g of water and ethanol mixture (the mass ratio of water and ethanol is 1:1) into an atmospheric pressure reactor, heat up to 60-80°C, and add acetic acid 40g for the transformation of calcite structure calcium carbonate, keep the temperature for 60 minutes and then raise the temperature, add 40g of calcium hydroxide and 80g of stearic acid to the system in sequence at 90-100°C, continue to heat up after 120 minutes of constant temperature reaction, keep the temperature at 130-140°C After 1 hour, add 40g of calcium borate, raise the temperature to 200°C and keep the temperature for 5 minutes, then add 40...

Embodiment 3

[0036] Food grade compound calcium sulfonate formula components and percentage content: high alkali value synthetic calcium sulfonate 40%, stearic acid 3.3%, calcium borate 3%, calcium hydroxide 3%, acetic acid 0.5%, base oil white Oil 50%, antioxidant ditetradecyl thiodipropionate 0.2%.

[0037] Put 1400g of high alkali value synthetic calcium sulfonate with a base value of 360mgKOH / g, 140g of water and ethanol mixture (the mass ratio of water and ethanol is 1:1) into a normal pressure reactor, heat up to 60-80°C, and add acetic acid 17.5g for the conversion of calcite structure calcium carbonate, keep the temperature for 60 minutes and then raise the temperature, add 105g of calcium hydroxide and 115.5g of stearic acid to the system at a temperature of 90-100°C, and continue to heat up after 120 minutes of constant temperature reaction, at 130-140 After keeping the temperature at ℃ for 1 hour, add 105g of calcium borate, raise the temperature to 200℃ and keep the temperature...

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Abstract

The invention relates to a composite of food-grade compound calcium sulfonate-base lubricating grease and a preparation method of the composite. The preparation method comprises the following steps of: feeding mixture of 40-60% synthesized calcium sulfonate with high base number, water and ethanol into a reaction kettle, stirring and heating to 60-80DEG C, adding 0.5-2% of acetic acid to convert calcium carbonate with a calcite structure, adding 1-5% of calcium hydroxide and 2-5% of stearic acid under 90-100 DEG C after 1h of constant temperature, carrying out saponification reaction for 120min, rising temperature after saponification, adding 1-5% of calcium borate after 1h of 130-140 DEG C constant temperature, rising the temperature to 180-200DEG C keeping constant temperature for 5-10min, cooling the temperature to 100-110DEG C, adding 0.2-1.5% of antioxygen, homogenizing, adjusting thickness by adding base oil, degassing in a filtering way, and filling to form finished products. The dropping point of the composite provided by the invention is more than 300DEG C, the 0.1-milliom times shear difference value is within 20, and the PD (potential difference) value is not less than 400kg.

Description

technical field [0001] The invention belongs to the technical field of lubricating grease, in particular to a composition and a preparation method of a food-grade composite calcium sulfonate-based lubricating grease. Background technique [0002] With the development of the domestic economy and the gradual improvement of people's living standards, food safety is increasingly concerned in the country. Food safety has become a key factor affecting the survival and development of food companies. The potential harm caused by non-food lubricants to food safety has aroused people's great attention. The base oil of ordinary lubricating grease is not refined enough, and contains more carcinogens-polycyclic aromatic hydrocarbons, which seriously endanger human health. Therefore, ordinary lubricating grease cannot be used in food production. [0003] At present, economically developed countries such as Europe and the United States have a complete food-grade grease evaluation and cert...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/00C10M121/04C10N30/10
Inventor 李纪委赵伟杨涛涛
Owner CHINA PETROLEUM & CHEM CORP
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