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A kind of preparation method of dioctyl sodium sulfosuccinate

A technology of diisooctyl succinate sodium sulfonate and isooctanol, which is applied in the preparation of sulfonic acid, sulfonate salt, organic chemistry, etc. The use range of penetrant products, the difficulty of guaranteeing the residual amount of isooctanol, etc., can achieve the effect of enhancing the effect of refluxing alcohol removal, reducing the total feeding amount, and reducing the residual amount of isooctanol

Active Publication Date: 2015-09-30
广州星业科技股份有限公司
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  • Summary
  • 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 there is no de-isooctanol process, it is difficult to ensure the residual amount of isooctyl alcohol in the product, resulting in a strong pungent smell, which cannot be applied to low-odor formulas, and high-quality di-octyl succinate cannot be obtained Sodium sulfonate products, which limit the scope of use of penetrant products

Method used

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  • A kind of preparation method of dioctyl sodium sulfosuccinate
  • A kind of preparation method of dioctyl sodium sulfosuccinate
  • A kind of preparation method of dioctyl sodium sulfosuccinate

Examples

Experimental program
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Effect test

Embodiment 1

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

[0040] Put 340Kg of diisooctyl butenedioate and 130Kg of water into the sulfonation reactor 1, start stirring, neutralize with sodium hydroxide until the acid value is 0-0.3mgKOH / g, add 108Kg of sodium bisulfite, open Condensate water and heat up to 110-115°C for reflux reaction. Sulfonation reaction equipment such as figure 1 As shown, observe the total amount of liquid condensed by the condenser 2 through the liquid level gauge of the reflux header tank 3, control the lower reflux control valve 4, and only return the water in the lo...

Embodiment 2

[0042] Put 273Kg of isooctyl alcohol and 98Kg of maleic anhydride into the esterification reaction kettle, feed nitrogen, start stirring, heat up to 90°C and keep it warm for 1 hour, add 3Kg of boric acid, 1Kg of phosphoric acid, 3Kg of sodium hypophosphite, and heat up to 115°C Keep warm for 2 hours, continue to heat up, and keep warm for 4.5 hours after reaching 200°C, cool the material to 60°C, and 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 until the acid value is 0-0.3mgKOH / g, add 110Kg of sodium bisulfite, open Condensate water and heat up to 110-115°C for reflux reaction. Through the liquid level gauge of the reflux header tank 3, observe the total amount of liquid condensed by the condenser 2, control the lower reflux control valve 4, and only return the water in the lower layer of the reflux header tank 3, ...

Embodiment 3

[0045] Put 260Kg of isooctyl alcohol and 98Kg of maleic anhydride into the esterification reaction kettle, blow in nitrogen, start stirring, raise the temperature to 60°C and keep it for 2 hours, add 0.1Kg of p-toluenesulfonic acid, 0.1Kg of loaded phosphotungstic acid, 2Kg Hypophosphorous acid, heat up to 115°C and keep warm for 3 hours, continue to heat up, and keep warm for 5 hours after reaching 185°C, cool the material to 60°C, filter with 1 μ 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 until the acid value is 0-0.3mgKOH / g, add 104.1Kg of sodium bisulfite, and start Large condensed water, heated to 110 ~ 115 ° C for reflux reaction. Through the liquid level gauge of the reflux header tank 3, observe the total amount of liquid condensed by the condenser 2, control the lower reflux control valve 4, and only return the water in ...

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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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Patent Type & Authority Patents(China)
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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