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Preparation method and application method of pour point depressant for industrial oleic acid

An application method and technology of pour point depressant, applied in the preparation and application field of industrial oleic acid pour point depressant, to achieve the effect of operability and easy implementation

Inactive Publication Date: 2019-10-29
广州精至百特利化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a preparation and application method of an industrial oleic acid pour point depressant for the freezing problem of industrial oleic acid during storage, transportation and use in the southern region in winter

Method used

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  • Preparation method and application method of pour point depressant for industrial oleic acid
  • Preparation method and application method of pour point depressant for industrial oleic acid
  • Preparation method and application method of pour point depressant for industrial oleic acid

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0029] Preparation of industrial oleic acid pour point depressant A.

[0030] Add C to a four-neck round bottom flask 20 ~C 24 108 grams of α-olefins, 32 grams of maleic anhydride, equipped with a stirrer, thermometer, condenser, and a feeding funnel with a switch, heat and melt the materials in the flask with an electric heating mantle, start stirring, when the temperature of the materials rises to 150-160 ° C , start to drop 2.8 grams of di-tert-butyl peroxide, the time for adding di-tert-butyl peroxide is 3.5 hours, during the dropping process, the temperature of the material is controlled at 150-180°C, after the addition is completed, Continue to stir at 150-180°C for 0.5 hour, take a copolymer sample, then add 173 grams of industrial oleic acid to terminate the polymerization reaction and dilute the copolymer, stir well to obtain industrial oleic acid pour point depressant A.

[0031] The melting point of the copolymer sample was determined to be 90°C.

[0032] The aci...

example 2

[0035] Preparation of industrial oleic acid pour point depressant B.

[0036] Add C to a four-neck round bottom flask 20 ~C 28 110 grams of alpha olefin, 30.8 grams of maleic anhydride, equipped with a stirrer, thermometer, condenser, and a feeding funnel with a switch, heat and melt the contents of the flask with an electric heating mantle, start stirring, when the temperature of the contents rises to 155-170 ° C , start to drop 2.7 grams of di-tert-butyl peroxide. The time for adding di-tert-butyl peroxide is 4 hours. , continue stirring at 150-180° C. for 0.5 hour, take a copolymer sample, then add 170 grams of industrial oleic acid, stir well to obtain industrial oleic acid pour point depressant B.

[0037] The melting point of the copolymer sample was determined to be 85°C.

[0038] The acid values ​​of the industrial oleic acid sample and the pour point depressant B sample used in the test were measured respectively. The acid value of the industrial oleic acid was 196...

example 3

[0041] Add the pour point depressant A prepared in Example 1 to industrial oleic acid 1 and industrial oleic acid 2 at 15°C, mix well, measure the freezing point of industrial oleic acid, and freeze industrial oleic acid for 3 days at 6°C and 3°C. Observe its mobility, and the test results are listed in Table 1 and Table 2.

[0042] Table 1 Application test of pour point depressant A in industrial oleic acid I

[0043]

[0044] Note: The precipitated crystals are in the form of dispersed particles

[0045] Table 2 Application test of pour point depressant A in industrial oleic acid II

[0046]

[0047] Note: The precipitated crystals are in the form of dispersed particles

[0048] The results in Table 1 and Table 2 show that adding the pour point depressant A prepared in Example 1 to the industrial oleic acid whose temperature is 5°C and 7°C higher than its own freezing point can lower the freezing point of the industrial oleic acid. When the amount is appropriate, th...

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Abstract

The invention discloses a preparation method and application method of a pour point depressant for industrial oleic acid. The preparation method comprises the steps: using peroxide to initiate a polymerization reaction on equimolar alpha-olefin and maleic anhydride at 135-200 DEG C for 2-8 hours, and using industrial oleic acid to terminate the polymerization reaction, dilute an alpha-olefin maleic anhydride copolymer and the industrial oleic acid pour point depressant with an acid value of not less than 185 mg KOH / g. The pour point depressant is applied to the industrial oleic acid, the freezing point (the congealing point) of the industrial oleic acid can be reduced through the pour point depressant, and the low temperature fluidity of the industrial oleic acid can be improved.

Description

technical field [0001] The invention relates to the preparation and application method of an industrial oleic acid pour point depressant, in particular to the preparation of an alpha olefin maleic anhydride copolymer and its application method in industrial oleic acid. Background technique [0002] Industrial oleic acid is an octadecyl unsaturated fatty acid, including fatty acids with one unsaturated double bond and two unsaturated double bonds, as well as a small amount of saturated fatty acids and oils. Commodity industrial oleic acid is generally divided into high, medium and low freezing points according to its freezing point (freezing point), and its freezing point is not higher than 10°C, 8°C, and 4°C respectively. In winter in the southern region, the temperature sometimes drops to 0-10°C. In these areas, the storage and transportation of industrial oleic acid in winter will encounter the problem that oleic acid is difficult to flow due to crystallization or solidifi...

Claims

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Application Information

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IPC IPC(8): C08F210/14C08F222/06C08F4/34C11B5/00
CPCC08F210/14C11B5/0028C08F222/06C08F4/34
Inventor 周松茂
Owner 广州精至百特利化工科技有限公司
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