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Animal and vegetable oil high-pressure hydrolysis epoxidation modification additive for metal working fluid

A technology of animal and vegetable oils and metalworking fluids, applied in the petroleum industry, lubricating compositions, etc., can solve the problems of limiting the service life of oil products, poor hydrolysis stability, loss of fluidity, etc., achieves low environmental pollution, improves oxidation Stability, the effect of not easy to decompose

Inactive Publication Date: 2020-06-09
上海丝凯检测技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the improvement of the introduction of animal and vegetable oil raw materials also faces a series of difficulties, including easy oxidation at high temperature, sludge and precipitation formation; gel / water formation at low temperature, making it lose fluidity; poor hydrolysis stability, Lead to increased acid value, limiting the service life of the oil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1: Taking rapeseed oil as an example to prepare modified animal and vegetable oils; first, the rapeseed oil is hydrolyzed under high pressure, so that the triglyceride in it is hydrolyzed to generate oleic acid; then the oleic acid is converted into epoxy Oleic acid, the epoxy part is hydrolyzed to generate hydroxyl groups; each hydroxyl group is esterified with the carboxyl group of the next oleic acid, and polycondenses each other to form polyester; finally, the acid value is controlled, and alcohol is added to react with free acid until the free acid The reaction is complete, and the acid value is less than 0.1mg KOH / g.

[0029] In the foregoing, the high-pressure hydrolysis reaction of rapeseed oil is carried out in a hydrolysis tower, and the added water is distilled water or demineralized water.

[0030] In the foregoing, the catalyst used in the epoxidation reaction is a strongly acidic cation exchange resin, the precursor of the transition oxidant is a p...

Embodiment 2

[0043] Embodiment 2: take rapeseed oil as an example to prepare modified animal and vegetable oil; the preparation method comprises the following steps:

[0044] (1) Put rapeseed oil into the bottom of the hydrolysis tower, add distilled water or demineralized water from the top of the tower, and then add high-pressure steam from the upper, middle and lower positions of the tower to maintain the temperature inside the tower at 250°C-255°C , the operating pressure is controlled at 5-5.5Mpa, and the water-oil ratio is controlled between 0.56-0.75; the fatty acid after hydrolysis is discharged from the top of the tower, and then dehydrated;

[0045] (2) Add 125g of rapeseed oil, 37.5mL of acetic acid and 7g of cation exchange resin into a 500mL five-neck flask, fix it in a device with a temperature control device, stir and heat, and set the temperature at 60°C. Put 62.5mL of hydrogen peroxide into the separatory funnel, slowly add it dropwise during the heating process, control t...

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Abstract

The invention discloses an animal and vegetable oil high-pressure hydrolysis epoxidation modification additive for a metal working fluid. Animal and vegetable oil is hydrolyzed into oleic acid in a high-pressure hydrolysis manner, a double bond in oleic acid is oxidized by peroxycarboxylic acid through an epoxidation reaction and is combined with another oxygen atom to be converted into an epoxy bond, then the epoxy bond is converted into two hydroxyl groups through hydrolysis, so that the hydroxyl groups and carboxyl groups carried by the other part of oleic acid are esterified and polycondensed into polyester, and the final acid value of the modified animal and vegetable oil is kept within 0.1 mg KOH / g. The high-pressure hydrolysis rate is high, no catalyst is contained, oleic acid can be obtained through simple treatment, the epoxidation reaction can improve the oxidation stability, and decomposition is not likely to happen at the high temperature. The viscosity-temperature propertyis good, the fluidity is good and the volatility is low at low temperature, and the flash point and the ignition point are high. Energy consumption is low, environmental pollution is small, and environmental protection and energy development and utilization are facilitated.

Description

technical field [0001] The invention relates to a modification technology for animal and vegetable oils used to prepare metalworking fluids, which belongs to IPC classification C10M lubricating composition technology, in particular to high-pressure hydrolysis and epoxidation modification additives of animal and vegetable oils for metalworking fluids. Background technique [0002] Metalworking fluids are mainly liquids for metal processing, mainly for lubrication and cooling, and also for rust prevention and cleaning. General metalworking fluids include cutting fluid, cutting oil, emulsion, stamping oil, quenching agent, high temperature oil, extreme pressure cutting fluid, grinding fluid, antirust oil, cleaning agent, blackening agent, deep drawing oil, thickening agent etc. Metal processing cutting fluid is a soluble lubricating oil with low foam and high lubricity. It can minimize maintenance costs even in environments with high requirements for processing fluids. It is b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M145/22C08G63/06C10N30/10C10N30/02C10N40/20
CPCC08G63/06C10M145/22C10M2209/102
Inventor 俞兴华许栋杰
Owner 上海丝凯检测技术有限公司
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