Preparation method of dioctyl sodium sulfosuccinate

A technology of diisooctyl sulfonate sodium succinate and diisooctyl butenedioate, which is applied in the fields of sulfonic acid preparation, sulfonate preparation, organic chemistry, etc., and can solve the problem of inability to obtain diisooctyl sulfonate succinate Sodium acid sodium products, limited use range of penetrant products, difficult to guarantee the residual amount of isooctyl alcohol, etc., to achieve the effect of enhancing the effect of reflux alcohol removal, reducing the total feeding amount, and reducing the residue of isooctyl alcohol

Active Publication Date: 2014-04-09
广州星业科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main problem that current industrial production process exists is: in order to obtain relatively high-quality dioctyl sodium succinate sulfonate product, isooctanol charging amount is still too large during esterification, needs to have high-vacuum de-isooctanol step, to equipment and production conditions are high; if

Method used

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  • Preparation method of dioctyl sodium sulfosuccinate
  • Preparation method of dioctyl sodium sulfosuccinate
  • Preparation method of dioctyl sodium sulfosuccinate

Examples

Experimental program
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Effect test

Example Embodiment

[0038] Example 1

[0039] Put 267Kg of isooctyl alcohol and 98Kg of maleic anhydride into the esterification reactor, pour in nitrogen, start stirring, heat up to 80°C for 1.5 hours, add 4Kg of dibutyltin oxide, 3Kg of sodium phosphite, and heat to 115 Incubate at ℃ for 1.5 hours, continue to increase the temperature, keep for 4 hours after reaching 200℃, cool the material to 60℃, filter with 1μ filter cloth to obtain diisooctyl butenedioate.

[0040] Put 340Kg of diisooctyl crotonate and 130Kg of water into the sulfonation reactor 1, start stirring, neutralize with sodium hydroxide to an acid value of 0~0.3mgKOH / g, add 108Kg of sodium bisulfite, and turn it on. The condensed water is heated to 110-115°C for reflux reaction. The sulfonation reaction device such as figure 1 As shown, the total amount of liquid condensed by the condenser 2 is observed by the level gauge of the reflux high tank 3, the lower reflux control valve 4 is controlled, and only the water in the lower layer o...

Example Embodiment

[0041] Example 2

[0042] Put 273Kg of isooctyl alcohol and 98Kg of maleic anhydride into the esterification reactor, pour nitrogen into it, start stirring, heat up to 90°C for 1 hour, add 3Kg boric acid, 1Kg phosphoric acid, 3Kg sodium hypophosphite, and heat up to 115°C Incubate for 2 hours, continue to increase the temperature, keep for 4.5 hours after reaching 200°C, cool the material to 60°C, filter with 1μ filter cloth to obtain diisooctyl butenedioate.

[0043] Put 340Kg of diisooctyl butenedioate and 120Kg of water into the sulfonation reactor 1, start stirring, neutralize with sodium hydroxide to an acid value of 0~0.3mgKOH / g, add 110Kg of sodium bisulfite, and turn it on. The condensed water is heated to 110-115°C for reflux reaction. Observe the total amount of liquid condensed by the condenser 2 through the level gauge of the reflux high tank 3, and control the lower reflux control valve 4 to return only the water in the lower layer of the reflux high tank 3, and the u...

Example Embodiment

[0044] Example 3

[0045] Put 260Kg of isooctyl alcohol and 98Kg of maleic anhydride into the esterification reactor, pour in nitrogen, start stirring, heat up to 60℃ and keep for 2 hours, add 0.1Kg p-toluenesulfonic acid, 0.1Kg load phosphotungstic acid, 2Kg Hypophosphorous acid, heat up to 115°C for 3 hours, continue to heat up, after reaching 185°C, keep for 5 hours, cool the material to 60°C, filter with 1μ filter cloth to obtain diisooctyl butenedioate.

[0046] Put 340Kg of diisooctyl butenedioate and 89Kg of water into the sulfonation reactor 1, start stirring, neutralize with sodium hydroxide to an acid value of 0~0.3mgKOH / g, add 104.1Kg of sodium bisulfite, open The condensed water is heated to 110-115°C for reflux reaction. Observe the total amount of liquid condensed by the condenser 2 through the level gauge of the reflux high tank 3, and control the lower reflux control valve 4 to return only the water in the lower layer of the reflux high tank 3, and the upper oil la...

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Abstract

The invention belongs to the technical field of fine chemical production, and discloses a preparation method of dioctyl sodium sulfosuccinate. The preparation method mainly comprises the steps of an esterification stage: implementing alcoholysis reaction to isooctanol and maleic anhydride, adding a catalyst and a color fixative, implementing primary dual-esterification reaction at 115 DEG C, increasing temperature to 185-205 DEG C and carrying out reaction to generate diisooctyl maleate; and a sulfonation stage: implementing reflux reaction to diisooctyl maleate, sodium hydrogen sulfite and water, and removing residual isooctanol in a refluxing process to obtain dioctyl sodium sulfosuccinate. The preparation method disclosed by the invention is low in isooctanol addition, thus reducing raw material cost, and is free from vacuum reaction and isooctanol removal under high vacuum, so as to greatly reduce requirement on equipment; the isooctanol is removed in the sulfonation reaction, thus effectively reducing residue. The prepared dioctyl sodium sulfosuccinate is light in color, small in smell, good in wettability and low in isooctanol content.

Description

technical field [0001] The invention belongs to the technical field of fine chemicals production, and in particular relates to a preparation method of diisooctyl sodium sulfosuccinate. Background technique [0002] Diisooctyl sodium sulfosuccinate was first developed by the United States, and it appeared in the surfactant market in the form of a commodity after World War II. It is known for its high wetting power, low surface tension, good surface activity, and is an excellent penetrating agent, wetting agent and dispersing agent. Diisooctyl sodium sulfosuccinate has a polar head and two hydrocarbon groups, and it can form a microemulsion without co-surfactants, and can also emulsify, solubilize, foam, defoam, moisturize and lubricate, A series of functions such as washing, antistatic and anti-corrosion make it widely used in plastics, cosmetics, mining coatings, papermaking, rubber, synthetic detergents, metallurgy, pesticides, petroleum, asbestos, construction, medicine a...

Claims

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Application Information

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IPC IPC(8): C07C309/17C07C303/32C07C303/20
Inventor 陈砚楷孟巨光
Owner 广州星业科技股份有限公司
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