Production method of acrylamido tertiary butyl sulfonic acid

A technology of tert-butylacrylamide sulfonic acid and production method, which is applied in the production field of organic compounds, can solve problems such as wide residence time distribution, and achieve the effects of improving production efficiency, yield and product stability

Active Publication Date: 2014-12-31
CHINA PETROLEUM & CHEM CORP +1
View PDF8 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a continuous process for the synthesis of tert-butylacrylamide sul

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] This embodiment is used to illustrate the production method of ATBS provided by the present invention.

[0044] (1) Add 496g of acrylonitrile containing 0.25% by mass of water into the mixer, lower the temperature to -5°C, and then add 73.6g of SO 3 The mass content is 3% oleum, after stirring evenly, enter steady-state operation. The specific method is: add acrylonitrile with 0.25% water content to the above-mentioned mixer through a flow meter at a flow rate of 248.0g / h by a metering pump, and add oleum at the same time, wherein free SO 3 The mass content is 3%, and the metering pump is added through a meter at a flow rate of 36.8g / h to obtain a mixed solution.

[0045](2) The mixed liquid flows continuously into the horizontal reactor through the overflow port in the middle of the mixer. The horizontal reactor has three isobutene inlet pipelines. After the isobutene is vaporized, it is continuously fed into the horizontal reactor at a total flow rate of 11.5g / h Dur...

Embodiment 2

[0048] Synthesize ATBS according to the method of Example 1, the difference is that SO in oleum 3 The content is 5%. After the obtained ATBS crude product is detected by liquid chromatography, the product purity is 98.2% (mass), and the product synthesis yield is 96.7% (mass).

[0049] The crude ATBS product was recrystallized with 10% acetic acid aqueous solution to obtain high-purity ATBS with a purity of 99.5% (by mass).

Embodiment 3

[0051] Synthesize ATBS according to the method of Example 1, the difference is that the reaction temperature is 30-32°C. After detection by liquid chromatography of the obtained ATBS crude product, the product purity is 97.6% (by mass), and the product synthesis yield is 96.0% (by mass).

[0052] The crude ATBS product was recrystallized with 10% acetic acid aqueous solution to obtain high-purity ATBS with a purity of 99.4% (by mass).

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a production method of acrylamido tertiary butyl sulfonic acid. The production method comprises the following steps of 1, mixing acrylonitrile and a sulfonating agent to obtain a sulfonating agent-containing acrylonitrile solution, 2, providing a horizontal stirring reactor, and continuously feeding the mixed solution obtained by the step into the horizontal stirring reactor so that the mixed solution contacts with isobutene and product slurry is formed, 3, continuously discharging the product slurry from the horizontal stirring reactor, and filtering the product slurry to obtain acrylamido tertiary butyl sulfonic acid-containing filter cake, and 4, drying the filter cake obtained by the step 3 to obtain an acrylamido tertiary butyl sulfonic acid crude product having mass content more than 96.0%.

Description

technical field [0001] The invention relates to a production method of an organic compound, in particular to a production method of tert-butylacrylamide sulfonic acid. Background technique [0002] Tertiary butylacrylamide sulfonic acid (Acrylamido Tertiary Butyl Sulfonic Acid, hereinafter referred to as ATBS) is a multifunctional water-soluble anionic monomer, which is easy to polymerize due to its molecular structure having carbon-carbon double bonds and salt-insensitive sulfonic acid groups. Moreover, its homopolymer and copolymer have many special properties and have broad application prospects. They can be widely used in oilfield chemistry, water treatment agents, chemical fibers, plastics, printing and dyeing, coatings, surfactants, antistatic agents, ceramics, photography, Detergent additives, ion exchange resins, gas separation membranes, electronics industry and other fields. [0003] At present, the most typical production process of ATBS is to prepare ATBS by rea...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C07C309/15C07C303/06
Inventor 李斗星齐兰芝黄凤兴穆晓蕾贾春革
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap