Method for preparing powdered Alpha-alkenyl sulphonate

A technology of alkenyl sulfonate and alkenyl sulfonic acid, applied in sulfonate preparation, organic chemistry and other directions, can solve problems such as large energy consumption and powdery AOS, and achieve the effects of saving energy consumption, saving investment and simplifying the process

Inactive Publication Date: 2009-06-03
JIAXING ZANYU TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using this drying tower to produce AOS products, the drying efficiency has been improved to a certain extent, but the problem of large energy consumption is still a bottleneck in the production of powdered AOS

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Example 1: 50g alkenyl sulfonic acid was aged at 55°C for 15min in a 250ml ground-mouth bottle, and mixed with 10g powdered sodium hydroxide and 8g water into a small pressure reaction device, stirred under airtight conditions, and heated at a temperature of 150 ℃, pressure 0.5MPa, after neutralization and hydrolysis for 27min, through a crushing device, the powdery AOS with a content of 87.2% was finally obtained.

Embodiment 2

[0019] Example 2: 50g alkenyl sulfonic acid was aged at 55°C for 10min in a 250ml ground-mouth bottle, and mixed with 50g powdered sodium bicarbonate and 6g of water into a small pressure reaction device, stirred under airtight conditions, and heated at temperature 168°C, pressure 0.03MPa, after neutralization and hydrolysis for 56 minutes, through a crushing device, a powdery mixture of AOS and sodium bicarbonate with a content of 49.4% was obtained.

Embodiment 3

[0020] Example 3: 50g alkenyl sulfonic acid was aged at 50°C for 16 minutes in a 250ml ground-mouth bottle, mixed with 50g powdered sodium carbonate and 4g water into a small pressure reaction device, stirred under airtight conditions, and heated at a temperature of 150°C , pressure 0.35Pa, after neutralization and hydrolysis for 5 minutes, through a crushing device, a mixture of powdery AOS and sodium carbonate with a content of 49.6% was obtained.

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PUM

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Abstract

The invention relates to a method preparing powdered Alpha-alkenyl sulphonate, belonging to the technical field of organic compound synthesis. Alpha-olefin reacts with gaseous sulfur trioxide in a sulfonator so as to obtain alkenyl sulfoacid which undergoes aging and is then directly mixed with solid alkali and water, and neutralization and hydrolysis are carried out so as to obtain the powdered Alpha-alkenyl sulphonate. The range of the number of carbon atoms of the Alpha-olefin is C8-C24, mol ratio of the alkenyl sulfoacid and the solid alkali ranges from 1:1.1-5.0, and the solid alkali is any of the three components of sodium hydroxide, sodium carbonate or sodium bicarbonate or is a mixture consisting of more than one of the three components. The invention reasonably selects the solid alkali to replace liquid alkali for direct neutralization and hydrolysis, and reasonably determines technological parameters for the neutralization and hydrolysis of the alkenyl sulfoacid and the solid alkali by carrying out a great number of tests in terms of different formula ratios and different temperatures, pressures and water addition amount for aging, neutralization and hydrolysis, therefore, the investment on production apparatuses can be effectively reduced, and the energy consumption and production cost can be lowered.

Description

technical field [0001] The invention relates to a preparation method of powdery α-alkenyl sulfonate, which belongs to the technical field of organic compound synthesis. Background technique [0002] α-Alkenyl Sulfonate (AOS) is an anionic surfactant with high foaming and good hydrolytic stability. It has excellent resistance to hard water, low toxicity, mildness, low irritation and good biodegradability. Especially when used in phosphorus-free detergents, it can not only maintain good washing ability, but also has good compatibility with enzyme preparations, and powder (granule) products are not easy to stick and have good fluidity. It can be used in phosphorus-free washing powder, liquid detergent, soap, personal care products, etc., and can be used in textile, printing and dyeing, petroleum, building materials and other industrial fields. [0003] In industrial production, α-olefins are sulfonated and aged, and then neutralized and hydrolyzed with 32% liquid caustic soda ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C303/32C07C309/20C07C309/62
Inventor 杨春良王文德
Owner JIAXING ZANYU TECH DEV CO LTD
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