Preparation method and application of organic sulfonic acid

A technology of organic sulfonic acid and organic sulfonate, which is applied in the field of fine chemicals, can solve the problems of complex preparation technology of polyhydroxy alkanesulfonic acid, high risk factor of operation, high water content of products, etc., and achieve technical practical operation Strong performance, high reaction yield, simple and reliable reaction process

Active Publication Date: 2021-11-19
厦门威亮光学涂层技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] By providing a method for preparing organic sulfonic acid, the present invention solves the problems in the prior art that the preparation technology of polyhydroxyalkanesulfonic acid is complicated, the operation risk factor is high, and the water content of the product remains high, and an industrializable method is realized. Method for mass production of polyhydroxyalkanesulfonic acid with high purity, low water content and convenient process

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  • Preparation method and application of organic sulfonic acid
  • Preparation method and application of organic sulfonic acid
  • Preparation method and application of organic sulfonic acid

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Embodiment 1

[0064] This embodiment provides a method for preparing an organic sulfonic acid, the structural formula of the organic sulfonic acid is The concrete preparation steps of described organic sulfonic acid comprise:

[0065] S1. prepare organic sulfonate;

[0066] S2. reacting an organic sulfonic acid salt with a proton donor to obtain a crude organic sulfonic acid;

[0067] S3. purifying the crude organic sulfonic acid to obtain a finished product.

[0068] The preparation of organic sulfonate in the S1 step is specifically, adding sodium 1-chloro-2-hydroxy-3-propanesulfonate (CAS No. 126-83-0) and sodium carbonate into a three-necked flask, adding water, and Refluxing and stirring for 5 hours at 85° C. to obtain an organic sulfonate; the molar ratio of sodium 1-chloro-2-hydroxy-3-propanesulfonate, sodium carbonate and water is 2:1.2:36.

[0069] The proton donor is hydrogen chloride gas;

[0070] The step S2 specifically includes: introducing a proton donor into the organic...

Embodiment 2

[0076] This embodiment provides a method for preparing an organic sulfonic acid, the structural formula of the organic sulfonic acid is The concrete preparation steps of described organic sulfonic acid comprise:

[0077] S1. prepare organic sulfonate;

[0078] S2. reacting an organic sulfonic acid salt with a proton donor to obtain a crude organic sulfonic acid;

[0079] S3. purifying the crude organic sulfonic acid to obtain a finished product.

[0080] The preparation of the organic sulfonate in the S1 step is as follows: mixing sodium bisulfite and water, stirring to dissolve, adjusting the pH to 7 with aqueous sodium hydroxide solution, and then adding 1,4-butenediol, at 40°C The reaction was stirred for 3 hours. During the reaction, dilute hydrochloric acid was used to control the pH=7 to the end of the reaction to obtain an organic sulfonate; the molar ratio of sodium bisulfite, 1,4-butenediol, and water was 1.4:1: 12.4.

[0081] The proton donor is hydrogen chlorid...

Embodiment 3

[0088] This embodiment provides a method for preparing an organic sulfonic acid, the structural formula of the organic sulfonic acid is The concrete preparation steps of described organic sulfonic acid comprise:

[0089] S1. prepare organic sulfonate;

[0090] S2. reacting an organic sulfonic acid salt with a proton donor to obtain a crude organic sulfonic acid;

[0091] S3. purifying the crude organic sulfonic acid to obtain a finished product.

[0092] The preparation of organic sulfonate in the S1 step is specifically, adding sodium 4-chloro-1-hydroxy-butanesulfonate (CAS No. 54322-20-2) and sodium carbonate into a three-necked flask, adding water, and stirring at 85 Under the condition of reflux and stirring for 5 hours, an organic sulfonate was obtained; the molar ratio of sodium 4-chloro-1-hydroxy-butanesulfonate, sodium carbonate and water was 2:1.2:36.

[0093]The proton donor is hydrogen chloride gas.

[0094] The step S2 specifically includes: introducing a prot...

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Abstract

The invention relates to the technical field of fine chemicals, in particular to a preparation method and application of organic sulfonic acid. The preparation method of the organic sulfonic acid comprises the following specific steps: S1, preparing organic sulfonate; S2, reacting the organic sulfonate with a proton donor to obtain an organic sulfonic acid crude product; and S3, purifying the organic sulfonic acid crude product to obtain a finished product. The organic sulfonic acid obtained by the invention has the following advantages that (1) a gaseous proton provider is adopted, so that the production efficiency in the actual reaction process is improved while a polyhydroxy alkane sulfonic acid product with high reaction yield is obtained; (2) processing and purifying are performed by adopting enamel film evaporation and short-path molecular distillation equipment, and acidic byproducts and water in liquid components of reaction products are effectively separated to obtain a polyhydroxy alkane sulfonic acid finished product with the moisture content as low as 0.3%; and (3) recovery of hydrochloric acid can be realized while the polyhydroxy alkane sulfonic acid is obtained in the purification and separation process, and industrial mass production of the polyhydroxy alkane sulfonic acid is realized.

Description

technical field [0001] The invention relates to the technical field of fine chemicals, in particular to a preparation method and application of organic sulfonic acid. Background technique [0002] Waterborne polyurethane is a new type of polyurethane that replaces organic solvents with water as the dispersion medium. It has the advantages of safety, reliability, environmental friendliness, excellent performance, and easy processing. According to the properties of polyurethane hydrophilic groups, waterborne polyurethanes can be divided into anionic, cationic and nonionic waterborne polyurethanes, and anionic polyurethanes can be further divided into carboxylic acid waterborne polyurethanes and sulfonic acid waterborne polyurethanes according to different chain extenders. At present, the commonly used water-based polyurethane in the market is carboxylic acid-based water-based polyurethane, and sulfonic acid-based water-based polyurethane has not been popularized in China; comp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C303/22C07C309/08
CPCC07C303/22C07C303/32C07C309/08
Inventor 吴后胜汤嘉陵苏始朝张崇照
Owner 厦门威亮光学涂层技术有限公司
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