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Sodium lauryl polyoxyethylene (7) octyl sulfosuccinate and its preparing process

A technology of lauryl polyoxyethylene ether and octyl sulfosuccinic acid, which is applied in chemical instruments and methods, dissolution, chemical/physical processes, etc., can solve problems such as unsatisfactory product performance and complicated procedures, and reduce equipment costs. Requirements, compact process, and the effect of avoiding the influence of impurities

Inactive Publication Date: 2007-08-15
NANTONG UNIVERSITY
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The process is complicated and the product performance is not very ideal

Method used

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  • Sodium lauryl polyoxyethylene (7) octyl sulfosuccinate and its preparing process
  • Sodium lauryl polyoxyethylene (7) octyl sulfosuccinate and its preparing process
  • Sodium lauryl polyoxyethylene (7) octyl sulfosuccinate and its preparing process

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Experimental program
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Embodiment Construction

[0017] In a four-necked flask equipped with a stirrer, a thermometer and a reflux condenser, the water-treated lauryl polyoxyethylene ether (7) and maleic anhydride were added sequentially at a material mass ratio (molar ratio) of 1.00:1.10, and accounted for Alkylsulfonic acid catalyst with 1% maleic anhydride mass, feed nitrogen, stir in 10-30 minutes (Example 10, 20, 30 minutes) and heat up to 140°C temperature; keep this temperature and time, holding time 150min, in the same reaction Connect the water separator to the device, and add octanol according to the mass ratio (molar ratio) of octanol:maleic anhydride=4.0:1.0 to carry out the double esterification reaction, and heat it to 200°C according to the method of the above-mentioned monoesterification reaction Temperature and timing, heat preservation and dehydration, heat preservation time is 300min, cooling, neutralization, cooling to a temperature of 20-60°C (eg 20°C, 40°C, 60°C), neutralization to a pH value of 7±0.5; n...

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Abstract

The invention discloses a lauryl alcohol polyvinyl ether (7) octyl sulfo succinic mixed diester sodium and relative preparation, comprising that processing monoester reaction between maleic anhydride and lauryl alcohol polyvinyl ether (7), and processing diester reaction between the reaction product of monoester reaction and octanol, and processing conjugate addition reaction between the reaction product of diester reaction and sodium bisulfite to obtain final product. The invention has high-quality property and simple process.

Description

Technical field: [0001] The present invention relates to a surfactant. Background technique: [0002] The existing succinic acid diester sulfonate series surfactants are generally esterified with excess alcohol, and then the esterified product is neutralized and washed with water, dehydrated and deacidified, and then a sulfonated phase transfer catalyst is added. closed system. The process is complicated, and the product performance is not very satisfactory. Invention content: [0003] The object of the present invention is to provide a kind of sodium lauryl alcohol polyoxyethylene ether (7) octyl sulfosuccinic acid mixed diester with good performance and simple synthesis method and its preparation method. [0004] Technical solution of the present invention is: [0005] A kind of polyoxyethylene lauryl ether (7) octyl sulfosuccinic acid mixed diester sodium is characterized in that: structural formula is: [0006] [0007] A kind of preparation method of polyoxyeth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F17/00C09K23/00
Inventor 华平戴宝江李建华吴东辉鞠剑峰丁欣宇张跃军景晓辉
Owner NANTONG UNIVERSITY
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