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Composite sulfonating agent and application thereof

A sulfonating agent and composite technology, applied in the preparation of sulfonic acid, organic chemistry, sulfonate, etc., can solve the problems of low conversion rate, poor appearance of finished products, difficult to remove solvents, etc., and achieve high conversion rate, color and luster Good, the effect of high product purity

Active Publication Date: 2013-12-18
南雄市汉科化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In the above process, the conversion rate of diisooctyl sulfosuccinate sodium salt is relatively low, and the conversion rate is high, but the appearance of the finished product is poor, and the residual solvent is also difficult to remove.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Add 166g of dioctyl succinate and 44g of sodium dioctyl sulfosuccinate to the reactor, stir and heat to above 80°C; add 41g of sodium bisulfite and 10g of sodium metabisulfite into 84g of water, stir to dissolve and add to the reaction device. After reacting for 5 hours, the reaction was stopped when the content of the intermediate control was >72%. Add alcohol to adjust the content to 70% live. Obtain a colorless to light yellow transparent liquid, and measure the content of the finished product by direct two-phase titration method according to the determination of anionic active substances in GB / T 5173-1985 detergent, and calculate it by the ratio of the theoretical yield of diisooctyl succinate added , The conversion rate of this process>98%.

Embodiment 2

[0015] Add 830g of diisooctyl succinate and 220g of sodium diisooctyl sulfosuccinate to the reactor, stir and heat to above 100°C; add 205g of sodium bisulfite and 50g of sodium metabisulfite into 420g of water, stir to dissolve and add to the reaction device. React for 4 hours, and stop the reaction when the content of the intermediate control is >72%. Add alcohol to adjust the content to 70% live. Obtain a colorless to light yellow transparent liquid, and measure the content of the finished product by direct two-phase titration method according to the determination of anionic active substances in GB / T 5173-1985 detergent, and calculate it by the ratio of the theoretical yield of diisooctyl succinate added , The conversion rate of this process>98%.

Embodiment 3

[0017] Add 830kg of diisooctyl succinate and 220kg of sodium dioctyl sulfosuccinate to the reactor, stir and heat to above 110°C; add 205kg of sodium bisulfite and 50kg of sodium metabisulfite into 420kg of water, stir to dissolve and add to the reaction device. React for 3 hours, and stop the reaction when the content of the intermediate control is >72%. Add alcohol to adjust the content to 70% live. Obtain a colorless to light yellow transparent liquid, and measure the content of the finished product by direct two-phase titration method according to the determination of anionic active substances in GB / T 5173-1985 detergent, and calculate it by the ratio of the theoretical yield of diisooctyl succinate added , The conversion rate of this process>98%.

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PUM

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Abstract

The invention discloses a composite sulfonating agent, which is a mixture of sodium hydrogensulfite and sodium pyrosulfite in a weight ratio of (4-5):1. The composite sulfonating agent is used for preparing sodium diisooctyl sulfosuccinate. A molar ratio of the composite sulfonating agent to a substance to be sulfonated is (1-1.1):1. When the composite sulfonating agent is used for preparing sodium 1,4-bis(1,3-dimethylbutyl)sulphonatosuccinate, the conversion rate is high, and the product has high purity and good color.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a composite sulfonating agent used for preparing sodium dimethyl isobutyl methyl sulfosuccinate. Background technique [0002] Diisooctyl sulfosuccinate sodium salt is an excellent surface tension modifier, excellent wetting agent, and also a very effective emulsifier, stabilizer and dispersant, whether it is static or dynamic . It migrates to the surface quickly. So far, its characteristics of greatly reducing the surface tension of substances, enhancing penetration and strong wetting ability are the perfect ones among anionic surfactants, and they are also very famous for wetting and penetrating. agent. its molecular formula C 20 h 37 o 7 S.Na, the molecular weight is 444.56. [0003] The conventional method of producing diisooctyl sulfosuccinate sodium salt is: [0004] 1. Feed diisooctyl succinate and sodium bisulfite at a ratio of 1:1.05, and add a certain amount of e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C303/20C07C303/32C07C309/17
Inventor 王汉锋张晓明
Owner 南雄市汉科化工科技有限公司