64 results about "Sodium Isethionate" patented technology

The invention relates to a method for synthesizing taurine. The production technique comprises the steps: A. sodium bisulfite, epoxyethane and sodium hydroxide are placed in a reaction kettle to produce sodium isethionate through reaction; sodium isethionate reacts with liquid ammonia at temperature of 260 DEG C and 270 DEG C and a pressure of 18.5MPa to 19MPa to synthesize and produce sodium 2-amino ethyl sulfonate; B. a sodium 2-amino ethyl sulfonate solution is added with sulphuric acid and goes through centrifugal filtration, thus obtaining the rough crystals of taurine; and C. the rough crystals of taurine are refined and dried. The method has the advantage that by changing the temperature and pressure for reaction, the yield of sodium 2-amino ethyl sulfonate (the intermediate product for synthesizing and preparing taurine) is improved; the occurrence possibility of side reaction is lowered; and the content of impurities is obviously reduced.

The invention provides a safe and efficient taurine synthesis method. The taurine synthesis method comprises the following steps: adding sodium hydrogen sulfite and ethylene oxide to prepare sodium isethionate; carrying out ammonolysis on sodium hydroxyethyl sulfonate and liquid ammonia at a high temperature to obtain sodium taurate; acidifying sodium taurate, and carrying out crystallization to obtain a taurine pure product. Before addition reactions, impurities are filtered by a nano-filtration membrane, and the side reaction influence is eliminated. The method has the advantages of mild ammonolysis reaction conditions and shortened reaction retention time, and the industrial production is safe and efficient.

The present invention discloses a comprehensive utilization method of sodium hydrosulfite waste residue. The comprehensive utilization method comprises that: (1) a vacuum distillation method is adopted to remove water in sodium hydrosulfite waste residue and concurrently obtain ethylene glycol; (2) the remaining waste residue obtained from vacuum distillation is washed by using an organic solvent to obtain an organic phase I and a solid A; (3) according to different solubilities of the solid in the solvent, sodium isethionate and sodium formate can be obtained; and (4) the organic phase I is subjected to vacuum distillation to recover the solvent and concurrently obtain thiodiglycol. According to the invention, the waste residue produced in the sodium hydrosulfite production process is subjected to comprehensive utilization and is purified to obtain four organic products, such that enterprise waste emission is reduced while economic benefits and social benefits are brought to enterprises.

The invention discloses an acne-removing facial cleanser which comprises the following components in parts by weight: 20-30 parts of a mulberry extract, 10-15 parts of rice washing water, 3-8 parts of honeysuckle, 1-5 parts of lemon juice, 3-6 parts of honey, 5-10 parts of olive oil, 3-9 parts of hyaluronic acid, 3-5 parts of sodium cocoyl isethionate, 0.1-0.3 part of disodium EDTA (ethylene diamine tetraacetic acid), 0.1-0.3 part of essences and 20-30 parts of de-ionized water. According to the acne-removing facial cleanser, the essential substances of the mulberries are extracted, and the rice washing water, the honeysuckle and the lemon juice are added, so that the acne-removing facial cleanser has the effects of clearing heat and toxins, resisting bacteria, diminishing inflammation, lightening and removing freckles, thoroughly cleaning skin, and the like, and has a remarkable effect for acnes, spots and chloasma after being used for a long term.

The invention provides a method for preparing taurine from sodium isethionate. The method comprises the following steps: catalyzing the reaction between sodium isethionate and ammonia by using a heterogeneous catalyst to generate sodium taurate, then neutralizing, crystallizing, separating and the like to obtain the finished product taurine, wherein the heterogeneous catalyst is one or more of Zr2MoO4 (PO4) 2, ZrMo2O8 or MoO3. Compared with a traditional basic catalyst, the process has the advantages that the temperature and the pressure of the sodium hydroxyethyl sulfonate ammonolysis reaction can be remarkably reduced, the reaction time is shortened, and the adopted catalyst is easy to separate and recover and is suitable for industrial production.

The invention discloses a method for producing sodium isethionate by continuous reaction. The method comprises the following steps: carrying out addition reaction on a sodium hydrogen sulfite aqueoussolution and ethylene oxide serving as raw materials, mixing the sodium hydrogen sulfite aqueous solution with certain concentration with the ethylene oxide at certain flow rate, and staying for a period of time from a first reactor; mixing the first-stage reaction liquid with ethylene oxide at a certain flow rate at a certain flow rate, enabling the mixture to enter a second reactor, staying fora period of time, enabling the mixture to respectively enter a third reactor, a fourth reactor and a fourth reactor in this way, adding acidic substances to adjust the pH value to 7.0-8.0, and finallydischarging. According to the method, the addition reaction is carried out in at least four stages, and the process parameters of each stage are accurately regulated, so that the hydrolysis rate of ethylene oxide and the content of byproducts such as ethylene glycol and polyethylene glycol in the product are effectively reduced, the yield of sodium hydroxyethyl sulfonate is increased, a subsequent purification process is avoided and the production cost is reduced, and other uses are more convenient.

The invention provides a method for preparing taurine. An adopted heterogeneous catalyst system can greatly improve the technological conditions for preparing taurine from sodium isethionate, and in addition, byproducts including ethanolamine, ethylene glycol and dipolyethylene glycol are removed through a high-temperature spray dryer, and complete application of effective components of mother liquor is achieved. Compared with the traditional process, the process has the advantages that the reaction temperature and pressure conditions required by the ammonolysis reaction of the sodium isethionate are milder, and meanwhile, the reaction time is also shortened. The method realizes complete application of effective components in the mother liquor, significantly improves the total yield of taurine, is easy for industrial production, and reduces the production cost of the product.

The invention provides a method for preparing taurine from sodium isethionate, which uses molybdate homogeneous catalyst to catalyze the ammonolysis reaction of sodium isethionate, and then obtains the finished taurine through steps such as neutralization and crystallization separation. sulfonic acid. Compared with traditional basic catalysts, the process can significantly reduce the temperature and pressure of the ammonolysis reaction of sodium isethionate, shorten the reaction time, and is easy for industrial production.

The invention discloses a stable high-oil phase content composition for personal care.The composition contains 5 wt% or above of a grease ingredient and a surfactant prepared from sodium cocoyl isethionate and disodium C-[2-[2-[2-(dodecyloxy)ethoxy]ethoxy]ethyl] sulphonatosuccinate.The invention further discloses application of the composition in personal care products.

The invention provides a method for determining a content of taurine in a solution and a method for purifying the taurine. The method comprises the steps of determining the refractive index of a to-be-detected solution, wherein the to-be-detected solution contains taurine or salt thereof and impurities, and the impurities comprise at least one of ethylene glycol, sodium isethionate, sodium sulfate and polyethylene glycol; establishing a standard curve of the taurine concentration in the taurine solution based on the refractive index; and performing optical detection on the to-be-detected solution, and determining the content of the taurine or the salt thereof in the to-be-detected solution according to the position of the obtained optical detection value in the standard curve. Through the method, the content of taurine in various taurine solutions with complex components can be effectively detected.

The invention relates to high grade cobalt sulfonate slag produced by using ammonium sulfate instead of copper sulfate as an oxidant. The high grade cobalt sulfonate slag comprises 15 to 21 percent of cobalt. The method comprises the following steps: preparing an agent from sodium isethionate, ammonium persulfate and cobalt in a ratio of (9-12):(4-5):(0.5-2); preparing the sodium isethionate into a 10 percent solution, and preparing the ammonium persulfate into a solution for later use; introducing 40 to 45 m<3> of two-stage cadmium removing solution into a cobalt removing tank, controlling the pH of initial acid to be more than 5.0, adding sodium hydroxide to regulate the pH to the required range when the acidity is high, and controlling the temperature to be less than or equal to 45DEG C; and adding the ammonium persulfate, slowly and uniformly adding the sodium isethionate, controlling the dosing time to be 20-30 minutes, reacting for 0.5 to 1.5 hours, discharging a solution into a middle tank by opening a bottom current valve, pumping into a cobalt removing filter press by using a pump for filter pressing, unloading the cobalt slag into a cobalt slag primary rinsing bath, and conveying filtrate into a leaching workshop.

The invention relates to a method for efficiently synthesizing N-methyltaurine and sodium N-methyltaurate, which comprises the following steps of: preparing sodium isethionate in situ from ethylene oxide, sulfur dioxide and sodium hydroxide under the action of a boron phosphine ligand catalyst, adding methylamine into a reactor, and generating the sodium N-methyltaurate under the action of the same catalyst, and then generating N-methyltaurine and sodium sulfate through sulfating of sodium N-methyltaurate. The process has the advantages of high catalytic efficiency of the catalyst, convenience in post-treatment of the product and high reaction yield, and is a green and environment-friendly process.

The invention provides an intelligent reaction system and method for preparing Nmethyl sodium taurate, and the system comprises an amination reaction kettle, an amination reaction product from the amination reaction kettle enters a first gas-liquid separation tank after reaction through a tubular reactor, and the side wall of the amination reaction kettle is provided with a raw material inlet, Theraw material inlet is provided with a microinterface generator used for dispersing crushed materials into microbubbles, the side wall of the microinterface generator is provided with a methylamine inlet, and the methylamine inlet is connected with a vaporizer so as to vaporize methylamine. According to the intelligent reaction system for preparing the N-methyl sodium taurate, the microinterface reactor is arranged at the raw material inlet of the amination reaction kettle, so that the problem of low reaction efficiency of the system due to the fact that methylamine and sodium isethionate cannot be fully mixed in the reaction kettle in the prior art is solved.

The invention relates to the technical field of textiles, and discloses a dyeing process of a crystal linen fabric. The dyeing process is characterized by comprising the following steps of S1, carrying out pretreatment; S2, carrying out pre-shrinking; S3, carrying out primary washing; S4, carrying out dyeing, namely dyeing the grey cloth after being treated in the S3, wherein a dye used for dyeingcomprises the following raw materials in parts by weight of 25-45 parts of disperse dye, 20-30 parts of dispersant MF, 15-25 parts of ammonium sulfate, 25-45 parts of fatty acid methyl ester polyoxyethylene ether sulfonate and 5-10 parts of sodium cocoyl isethionate, and adjusting the pH of a dyeing solution to be 5-6 by adopting acetic acid; S5, performing water washing again; S6, carrying out color fixing treatment, and S7, performing shaping to obtain the crystal linen fabric with high color fastness through the step S7. Ammonium sulfate serves as a corrosion inhibitor, so that the dyeingspeed of the disperse dye and spandex can be slowed down, the dyeing speed of the disperse dye and the polyester and the spandex is equivalent; and the sodium cocoyl isethionate can increase the acting force of the disperse dye and the spandex, so that the connection fastness between the disperse dye and the spandex is enhanced.

The invention relates to a production method of high-quality 4-(2-hydroxyethyl)piperazine-1-ethanesulfonic acid. The method comprises the following steps: (1) feeding sodium hydroxyethyl sulfonate, hydroxyethylpiperazine and a catalyst according to a certain ratio, and reacting in a channelized continuous production mode; (2) exchanging the reaction liquid after the reaction with hydrogen type cation exchange resin; and (3) carrying out concentration treatment on the exchanged exchange liquid, adding ethanol, carrying out cooling crystallization, centrifuging to obtain a hydroxyethyl piperazine ethanesulfonic acid crude product, and carrying out fine treatment on the crude product to obtain the high-quality 4-(2-hydroxyethyl)piperazine-1-ethanesulfonic acid. According to the invention, thecondensation reaction of sodium hydroxyethyl sulfonate and hydroxyethyl piperazine is carried out in a channelized reaction mode without a polar solvent with a low boiling point, and exchange treatment and regeneration treatment are carried out by adopting the hydrogen type cation exchange resin, so that the defect that more impurities are brought in when strong acid is used as an acidifying agent is avoided; and the regenerated liquid can be used as a sodium isethionate reaction raw material, and the raw material utilization rate is high.

The invention relates to a method for preparing N-sodium methyl taurate. According to the method, N-sodium methyl taurate is synthesized from methylamine and sodium isethionate as raw materials in water as a solvent under the action of a catalyst V2O5-WO3/TiO2. The method for preparing N-sodium methyl taurate provided by the invention is high in atom utilization rate, high in selectivity, mild in reaction condition, easy to operate and good in controllability, and is a green and environment-friendly preparation method.

The invention discloses efficient and nutritional plant liquid shampoo which is characterized by comprising the following raw materials in percentage by weight: 3-5 percent of an aloe extracting agent, 2-3 percent of natural tea tree extracting solution, 0.5-0.8 percent of olive fruit oil, 0.5-0.8 percent of PEG-7 olive oil, 0.3-0.5 percent of polyoxyethylene lauryl ether sodium sulfate, 0.2-0.4 percent of polymeric quaternary ammonium salt-10, 0.3-0.5 percent of stearic acid glycol ester, 0.5-0.8 percent of octadecanol, 0.8-1 percent of cocamidopropyl betaine, 2-5 percent of a pH adjusting agent, 1-2 percent of silicone emulsion, 0.5-0.8 percent of a mixture of hydroxyl zinc pyrithione and hexamidine sodium isethionate with the ratio of 1: 5, 0.3-0.5 percent of macromolecular polymer, 1-2 percent of a non-ionic surfactant, 0.3-0.5 percent of a preservative, 0.2-0.3 percent of essence and the rest of deionized water. The liquid shampoo can effectively improve scalp itching and promote scalp health, has the functions of nursing and sterilizing the scalp and relieving itching on the scalp, is natural, mild and nearly non-irritant, can be used for a long time, and can be either used for nursing dry and harmed hair or realizing daily nursing.