2341results about "Sulfonic acids salts preparation" patented technology

The invention relates to a method for cyclically producing taurine at a high yield. The method includes the following steps that S1, ethylene oxide reacts with a sodium hydrogen sulfite solution to generate sodium hydroxyethyl sulfonate; S2, sodium hydroxyethyl sulfonate obtained in S1 is subjected to an ammonolysis reaction in ammonium hydroxide, flashing is carried out after the reaction is completed, and ammonia gas is recycled; S3, taurine-containing feed liquid of reaction liquid obtained after flashing in S2 is collected through an acid cation exchange resin column, the resin column is regenerated with a sulfur dioxide or carbon dioxide water solution after being inactivated, and eluant obtained during regeneration can be directly reused or reused after being treated with sulfur dioxide; S4, the feed liquid collected in S3 is subjected to after-treatment, and taurine is obtained. The method has the advantages that the generation amount of waste liquid in the whole process is small, part of substances are effectively and cyclically utilized in the process, the cost is reduced, the yield of taurine can reach 90% or above, meanwhile, the production process is relatively simple, and large-scale production is easy.

The present invention discloses a cyclic process for the production of taurine from ethylene oxide in a high yield of greater than 95% by continuously converting the byproducts of the ammonolysis reaction, sodium ditaurinate and sodium tritaurinate, to sodium taurinate. The cyclic process is completed by using sulfur dioxide or sulfurous acid to neutralize sodium taurinates to recover taurine and to regenerate sodium bisulfite, which is then reacted with ethylene oxide.

The invention provides an amido-containing ionic liquid used for absorbing acidic gases and a preparation method and application thereof and in particular relates to a method for absorbing acidic gases of CO2, H2S, SO2 and the like by using an amido-containing ionic liquid. The amido-containing ionic liquid comprises one or more of primary amine, secondary amine and tertiary amine, wherein positive ions of the ionic liquid are derived from organic polyamines, negative ions of the ionic liquid are derived from inorganic acid or organic acid, and the ionic liquid is prepared by mixing the organic polyamines with the inorganic acid or organic acid and then carrying out neutralization reaction through acid and alkali. The ionic liquid has the advantages of low cost, simple preparation method,strong absorbing capability and short balance time, can be used for the enriching of acidic gases, the deacidification refining of acid-containing gases of natural gas, refinery gas, methane, coal gas, synthesis gas, coke-oven gas, pyrolysis gas, smoke, motor vehicle tail gas and the like and the purification of gases under a proper space and an operating environment; meanwhile, the ionic liquid absorbing the acidic gases can release the acidic gases through pressure reduction and temperature raise, thus the absorbing capability of the ionic liquid is restored and the multiple absorption property of the ionic liquid is better.

Hydrofluoroalkanesulfonates of the general formula R—O—CXH—CX2—SO3M, where R is selected from the group consisting of alkyl groups, functionalized alkyl groups, and alkenyl groups; X is selected from the group consisting of hydrogen and fluorine with the proviso that at least one X is fluorine; and M is a cation, are made by reacting fluorovinyl ether with aqueous sulfite solution. Organic onium hydrofluoroalkanesulfonates are useful as ionic liquids and photoacid generators.

The invention relates to a composition capable of greatly improving crude oil recovery efficiency and a preparation method thereof, which mainly solve the problems in the prior art that the oil-displacing agent containing a surface active agent has poor oil displacement efficiency and high application concentration and alkali in alkaline-surfactant-polymer flooding brings corrosion and dirt harm on stratum and oil wells. By adopting the technical scheme of the surface active agent composition comprising fatty alcohol polyoxyethylene ether benzene sulfonate, polymer and water, the problems canbe well solved, and the composition can be used in tertiary recovery of an oil field.

The invention relates to a betaine surfactant and a preparation method and application thereof. The betaine surfactant is shown as a formula I, wherein the m is 0 or a positive integer, the n is 0 or a positive integer, the m and the n cannot be 0 simultaneously, the R1 is hydrogen (H) or alkyl, the R2 is H or alkyl, the R3 is alkyl and the R4 is alkyl. The invention further provides a preparation method of the betaine surfactant and application of the betaine surfactant in tertiary oil recovery as a surfactant of a binary compound oil-displacing agent. The betaine surfactant has strong temperature resistance, mineralization resistance and dilution resistance and wide application prospect in the field of the tertiary oil recovery.

The invention relates to a composite surfactant and a preparation method thereof, and mainly solves the problems of bad interface activity, bad temperature and salt resistance, and oil-water interface tension force rise caused by concentration reduction in a stratum migration process of surfactants used as a main component of oil displacement agent systems in the prior art. The composite surfactant is an alkyl alcohol or alkyl phenol polyoxyethylene polyoxypropylene ether carboxylate or sulfonate and zwitterionic surfactant composite surfactant, can well solve the problems, and can be used in tertiary oil recovery production of oilfields.

Provided herein are salts of (S)-2-amino-3-methyl-butyric acid (2R,3R,11bR)-3-isobutyl-9,10-dimethoxy-1,3,4,6,7,11b-hexahydro-2H-pyrido[2,1-a]isoquinolin-2-yl ester in amorphous and crystalline forms, and processes of preparation, and pharmaceutical compositions thereof. Also provided are methods of their use for treating, preventing, or ameliorating one or more symptoms of neurological disorders and diseases including hyperkinetic movement disorders or diseases.

A photosensitization chemical-amplification type resist material according to the present invention is used for a two-stage exposure lithography process, and contains (1) a developable base component and (2) a component generating a photosensitizer and an acid through exposure. Among three components consisting of (a) an acid-photosensitizer generator, (b) a photosensitizer precursor, and (c) a photoacid generator, the above component contains only the component (a), any two components, or all of the components (a) to (c).

There is disclosed a process for producing taurine by the ammonolysis of alkali isethionate in the presence of alkali ditaurinate or alkali tritaurinate, or their mixture, to inhibit the formation of byproducts and to continuously convert the byproducts of the ammonolysis reaction to alkali taurinate. Alkali taurinate is neutralized with isethionic acid to obtain taurine and to regenerate alkali isethionate. The production yield is increased to from 90% to nearly quantitative. The ammonolysis reaction is catalyzed by alkali salts of hydroxide, sulfate, sulfite, phosphate, or carbonate.

The invention relates to a method for preparing calcium sulfonate with high base number. In the method, alkyl benzene sulfonic acid and / or petroleum sulfonic acid serve as raw materials, low molecular alcohol serves as accelerating agent, calcium oxide and / or calcium hydroxide serve as calcifying agent; firstly, neutralization reaction is carried out to generate calcium sulfonate; then carbonation reaction is carried out for twice, post-treating agent is added for reaction; finally, alcohol, water, solvent and solid residue are removed to obtain the calcium sulfonate with high base number. The product of the invention is especially suitable for preparing lubricating grease, can shorten conversion time of calcium sulfonate crystal form, improve high-temperature bproperty and anti-moisture performance of the lubricating grease and satisfy the demands of high-performance lubricating grease.

The invention relates to a device and a method for producing sodium methyl taurate, in particular to a device and a method for continuously producing sodium methyl taurate in a pipeline mode. The method comprises the following steps of: adding sodium hydroxyethyl sulfonate, water, methylamine and catalyst into a storage tank, pumping the materials into a continuous pipeline reactor through a boosting pipeline pump under the high pressure of 10 to 25MPa, heating to the temperature of between 150 and 300 DEG C through heat conducting oil, and reacting for 10 to 60 minutes in the pipeline reactor; and feeding the materials into an evaporator after reaction, performing multistage distillation, decolorizing, moisturizing, refining, and thus obtaining the qualified sodium methyl taurate. The device is simple and high in process safety, the reaction conditions are easy to control, continuous production is realized, the yield reaches over 90 percent, the sodium methyl taurate is stable in quality, and large-scale production can be realized with low investment in the industry.

By using an organic base when a carboxylic acid bromodifluoroethyl ester is sulfinated by using a sulfinating agent, there is obtained 2-(alkylcarbonyloxy)-1,1-difluoroethanesulfinic acid ammonium salt. By oxidizing the 2-(alkylcarbonyloxy)-1,1-difluoroethanesulfinic acid ammonium salt, there is obtained 2-(alkylcarbonyloxy)-1,1-difluoroethanesulfonic acid ammonium salt. By using the 2-(alkylcarbonyloxy)-1,1-difluoroethanesulfonic acid ammonium salt as a raw material and exchanging it into an onium salt directly or through saponification / esterification, there can be obtained a 2-alkylcarbonyloxy-1,1-difluoroethanesulfonic acid onium salt.

The invention relates to an alkylphenol polyoxyethylene ether hydroxyl sulfonate type betaine surfactant and a preparation method thereof. The invention mainly solves the problem of poor oil displacement effect of the surfactant serving as an oil displacement agent in the conventional production technology under the conditions of high temperature and high mineralization degree and the problems that great damage is brought to stratum and oil wells, equipment and conveying pipelines are corroded, environment is polluted and the like because alkali is contained. The invention adopts the technical scheme that: the molecular general formula of the alkylphenol polyoxyethylene ether hydroxyl sulfonate type betaine is shown as the specification, wherein M is any one of alkali metal and alkaline earth metal; R is C1 to C20 hydrocarbyl; and n is any integer of 1 to 30, so that the invention solves the problems better and can be applied to intensified oil production of the oil wells.

Disclosed is a process for producing 2-bromo-2,2-difluoroethanol, which comprises reducing a bromodifluoroacetic acid derivative represented by the formula [1] by using an ate hydride complex as a reducing agent. 2-Bromo-2,2-difluoroethanol thus produced can be used as the starting material to carry out the esterification step, the sulfination step and the oxidation step in this order, thereby producing a 2-alkylcarbonyloxy-1,1-difluoroethanesulfonic acid salt, wherein A represents a substituted or unsubstituted linear, branched or cyclic alkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted aryloxy group having 6 to 15 carbon atoms, a heteroaryloxy group having 4 to 15 carbon atoms, or a halogen atom.

The invention provides a surface active agent and an oil-soluble viscosity reducer for crude oil as well as a preparation method of the surface active agent. The surface active agent is fatty acid ester ethyl sulphobetaine; and the oil-soluble viscosity reducer for crude oil comprises the following components in percentage by mass: (1) 40%-70% of mixed aromatics solvent, (2) 20%-55% of mutual solvent and (3) 2%-10% of surface active agent. The oil-soluble viscosity reducer for crude oil has the advantages that the fatty acid ester ethyl sulphobetaine type surface active agent obtained by the reaction of propane sultone and long-chain fatty acid-2-(dimethylamino) ethyl ester is firstly adopted in the oil-soluble viscosity reducer for the crude oil, the viscosity reducing effect is obvious, the using amount of the oil-soluble viscosity reducer does not exceed 5%, and the viscosity reduction rate of the oil-soluble viscosity reducer is above 90%.

The invention relates to fatty alcohol-polyoxyethylene ether benzene sulfonate and a preparation method thereof. The problems that a foam agent is poor in heat stability, is precipitated when meeting divalent ions and cannot meet the requirement of high-temperature and high-salinity stratum foam flooding in the conventional foam flooding enhanced oil extraction technology are mainly solved. The alcohol-polyoxyethylene ether benzene sulfonate with a molecular general formula (I) is adopted, wherein M is alkali metals, alkaline-earth metals or ammonium groups, R is alkyl groups having 8 to 24 carbon atoms, and n is an integral number from 3 to 20. Through the technical scheme, the problems are better solved. The method can be used for foam flooding enhanced oil extraction.

The invention relates to the field of chemical synthesis, and in particular to a method for synthesizing N-acyl-N-methyl taurine salt through microwave. The method comprises the following steps: with C8-18 fatty acid and N-methyl taurine salt as raw materials, directly synthesizing the N-acyl-N-methyl taurine salt by conducting microwave heating under a solvent-free condition; cooling the N-acyl-N-methyl taurine salt; pulping the cooled N-acyl-N-methyl taurine salt with 90-100% ethanol; filtering obtained pulp; then washing the pulp with 90-100% ethanol; and conducting vacuum drying so as to obtain a pure product. The method is easily available in raw materials, mild in reaction conditions, green and environment-friendly, simple and efficient, and the method is applicable to industrial production.

The invention relates to a surface active agent composition for tertiary oil recovery, and a preparation method and application thereof, and mainly solves the problems of poor displacement efficiency, and harm to the stratum and the oil field, corrosion of equipment and pipeline and difficult demulsification due to oil inorganic alkali contained in displacement system. The composition includes a cationic surface active agent and an anionic-non-ionic surface active agent; the cationic surface active agent is at least one selected from the group consisting of quaternary ammonium salt and quaternary ammonium alkali; the anionic-non-ionic surface active agent has the following general formula; and R represents C1-C30 alkyl or acyl, a m1+m2=0-100, n1+n2=0-100, R1 and R2 are independently selected from the group consisting of C1-C10 alkylene and substituted alkylene, Y1 and Y2 are independently selected from the group consisting of -SO3 (M) r and -COO (N) s, M and N are independently selected from the group consisting of H, alkali metal, ammonium or alkali-earth metal. The technical scheme well solves the problem, and can be used in intensified oil production of oil field.

The invention provides a hyperbranched polymer, a hyperbranched polycarboxylic acid-series super plasticizer and a preparation method thereof. The preparation method comprises the following steps of: undergoing an addition reaction and an ammonolysis reaction on alkenyl amine, polymethylmethacrylate, ethylene diamine and 2-acrylamide-2-sodium methylacrylsulfonate serving as raw materials to obtain a hyperbranched polymer with a structure shown as a formula (I), (II), (III) or (IV); undergoing a polymerization reaction on the hyperbranched polymer, an esterification monomer and a crosslinking agent; and preparing a hyperbranched polycarboxylic acid-series super plasticizer with a two-step process. The preparation method provided by the invention has the advantages of simple process, easiness for controlling a preparing process and operating, readily-available raw materials, low production cost and suitability for industrial production. Due to the adoption of the hyperbranched polycarboxylic acid-series super plasticizer, the comprehensive performance of concrete is improved. As proved by an experiment result, the hyperbranched polycarboxylic acid super plasticizer provided by the invention has high slump loss resistance, high water-reducing rate and high compressive strength.

The invention relates to a method for preparing a gydroxysulfobetaine amphoteric surface active agent including a polyether chain segment, belonging to the technical field of preparation of surface active agents. The gydroxysulfobetaine amphoteric surface active agent including the polyether chain segment is prepared by taking fatty amine polyoxyethylene ether and 3-chlorine-2-hydroxyl propane sodium sulfonate as raw materials. The gydroxysulfobetaine amphoteric surface active agent including the polyether chain segment is shown as a chemical structural formula in the specification. According to the gydroxysulfobetaine amphoteric surface active agent including the polyether chain segment synthesized by using the method disclosed by the invention, three hydrophilic groups consisting of polyoxyethenyl, quaternary ammonium salt and sulfonyl and hydrophobic alkyl are included; the gydroxysulfobetaine amphoteric surface active agent including the polyether chain segment has the two good surface activities of the non-ionic and amphoteric surface active agent; in addition, besides the good performance of the traditional gydroxysulfobetaine amphoteric surface active agent, the performances, such as water solubility, detergency, emulsifiability, dispersibility, solubilising power and the like, are improved obviously.

There is provided a curable composition including a water-soluble acrylamide monomer represented by the following General Formula (1-1) or (1-2), a polymer functional cured product, a water-soluble acrylamide compound, and a method for manufacturing the same.In General Formulas (1-1) and (1-2), m represents an integer of 2 or greater, and L represents an m-valent group or a single bond. Here, in a case where L is a single bond, m is 2. L1 and L2 each represent a single bond or a divalent linking group. R1 to R5 each represent a hydrogen atom or a substituent, and may be bonded to each other to form a ring, and may be bonded to L, L1, or L2 to form a ring. Either one of RA and RB represents a group represented by General Formula (a), and the other represents a group represented by General Formula (b).

The invention relates to a production process and special device of the condensation process of N-long-chain acyl amino acid salt. By adopting the process and special device, the hydrolysis of acyl chloride can be inhibited and the content of the by-product fatty acid salt can be reduced in the condensation process of acyl amino acid type surfactant. Therefore, the weight of the surfactant can be increased, the content of fatty acid salt can be reduced by 50%-75% compared with the single-pot reaction, the conversion rate can be increased to more than 99%, the feeding ratio can be reduced, the condensation time can be shortened and the production efficiency can be increased.

The present disclosure provides a process for producing taurine, includes: adjusting a PH value of a sodium taurate solution by a S4+ compound; introducing ethylene oxide into the sodium taurate solution to produce sodium hydroxyethyl sulfonate; separating crude taurine before or after introducing the ethylene oxide to the solution; and adding ammonia to the sodium hydroxyethyl sulfonate reaction solution to be reacted with the reaction solution to reproduce sodium taurate. The process for producing taurine of the present disclosure makes use of the balances of the sodium bases in the system, recycles the mother liquor until the sodium taurate is reproduced out of the reactions in the mother liquor, and thus is capable of allowing taurine to be synthesized and extracted.