34730-59-1Relevant academic research and scientific papers
Preparation method of sodium ethylenediamine ethanesulfonate
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Paragraph 0029; 0033-0036; 0040-0042, (2020/05/14)
The invention relates to a preparation method of sodium ethylenediamine ethanesulfonate, which comprises the following steps: synthesizing ethylenediamine ethanesulfonic acid by using ethylenediamineand ethyl sultone as raw materials through a synthesis reaction, and reacting ethylenediamine ethanesulfonic acid with alkaline sodium to synthesize the final product sodium ethylenediamine ethanesulfonate. The preparation method disclosed by the invention has the beneficial effects that the preparation process route is simple, the process control is simple, the product yield is high, no wastewater is generated in the process, and the preparation method is a green and environment-friendly synthesis method, is convenient for industrial production in workshops and has a wide application prospect.
Method for preparing 2-((2-aminoethyl) amino)-ethanesulfonic acid monosodium salt
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Paragraph 0040-0042; 0045-0047; 0050-0052, (2018/06/15)
The invention discloses a method for preparing 2-((2-aminoethyl) amino)-ethanesulfonic acid monosodium salt. The method comprises the following steps: ensuring that taurine, nitromethane and formaldehyde are subjected to Mannich reaction, so as to produce N-(2- nitryl ethyl) taurine, and then the N-(2- nitryl ethyl) taurine is subjected to alkali neutralization and hydrogenation reaction, so as toform the 2-((2-aminoethyl) amino)-ethanesulfonic acid monosodium salt. The product selectivity is greater than 99 percent, and the product yield is greater than 97 percent. The process route is richin raw material resources, green and environmentally friendly, high in product selectivity and product yield, and suitable for industrial production.
High-purity sodium ethylenediamine ethyl sulfonate synthesis method
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Paragraph 0023-0027, (2018/10/19)
The invention discloses a high-purity sodium ethylenediamine ethyl sulfonate synthesis method which includes the steps: 1 slowly dropwise adding sodium vinyl sulfonate solution into ethylenediamine under the condition of room temperature and stirring, increasing temperature to perform reflux for 3.5-4.5 hours under the condition of stirring after dropwise adding, and cooling the solution to obtainmixed solution containing sodium ethylenediamine ethyl sulfonate; 2 enabling the mixed solution to pass a strong acid type cation exchange resin adsorption column for adsorbing unreacted ethylenediamine and sodium ethylenediamine ethyl sulfonate, and performing elution with deionized water to remove impurities; 3 performing elution with alkali solution, swapping out the adsorbed ethylenediamine and sodium ethylenediamine ethyl sulfonate and collecting liquid flowing out of the strong acid type cation exchange resin adsorption column to obtain collected liquid; 4 performing decompression concentration on the collected liquid and removing diethylamine to obtain high-purity sodium ethylenediamine ethyl sulfonate. The method is simple, safe and convenient to operate, and the synthesized sodium ethylenediamine ethyl sulfonate is high in purity.
Method for preparing ethylenediamine esilate
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Paragraph 0066; 0067; 0068; 0075; 0076; 0081; 0083; 0084, (2017/02/17)
The invention relates to a method for preparing ethylenediamine esilate. The method comprises the steps that glycolonitrile and taurine salt serve as raw materials, or glycolonitrile, taurine and alkali metal hydroxide serve as raw materials, and cyanoethyl taurine salt is obtained through a dehydration condensation reaction; then, under the action of a hydrogenation catalyst, an ethylenediamine esilate hydrogenation solution is obtained through hydrogenation; a solvent is removed, and then the product ethylenediamine esilate is obtained. According to the catalyst, aluminum oxide and/or silicon oxide serve/serves as a carrier, and NiO, CoO, MoO3, MnO2 and Tc2O7 serve as active components. According to the method, ethylenediamine esilate can be obtained with a high conversion rate and high selectivity as long as light components such as the solvent in the hydrogenation solution are removed, the method is environmentally friendly in process, economical, safe and high in product yield, and has the industrialization amplification prospects, and purification is easy.
Glycol amino ethyl sulfonate preparation method
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Paragraph 0028; 0029, (2016/10/07)
The invention relates to a method for preparing ethylenediamino ethyl sulfonate by using beta-hydroxyethylenediamine as raw material. The method comprises the steps of converting beta-hydroxyethylenediamine into ethylenediamino ethyl ester through esterification, carrying out sulfonation by using sulfite as a sulfonating agent, separating and purifying to obtain the final product. The method provided by the invention provides a manufacturing technique of ethylenediamino ethyl sulfonate with the characteristics of simple operation, economic security, and cheap and available raw materials.
SULFONIC ACID GROUP-CONTAINING COMPOUND AND METHOD FOR PRODUCING SAME
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Paragraph 0115, (2017/07/19)
PROBLEM TO BE SOLVED: To provide a sulfonic acid group-containing compound containing little metal, and a production method for efficiently obtaining the compound. SOLUTION: Provided is a sulfonic acid group-containing compound which is an aminoethanesulfonic acid having a metal content of 0 to 5.0 ppm, obtained by heating and reacting vinyl sulfonic acids, having a vinyl group and a sulfonic acid group, and an amino group-containing compound, having at least two reactive functional groups with one of which reactive functional groups being an amino group, in an aqueous solvent, and thereafter removing the solvent and the like. The functional group is a functional group which reacts with a group selected from: a hydroxyl group; a carboxyl group; an ester group; an amino group; a thiol group; an isocyanate group; an isothiocyanate group; a halogen atom; an acid anhydride group; and a conjugated group on a surface of fullerene, carbon nano-tube, graphene, or derivatives of these carbon compounds. COPYRIGHT: (C)2015,JPOandINPIT
