Abstract: Disclosed are catalyst compositions having an internal electron donor which includes a 3,6-di-substituted-1,2-phenylene aromatic diester. Ziegler-Natta catalyst compositions containing the present catalyst compositions exhibit very high hydrogen response, high activity, high selectivity and produce propylene-based olefins with high melt flow rate.

Abstract: A method and a production system for recovering and treating taurine mother liquor, which is used for the process of ethylene oxide taurine production process. As for the treatment of the last mother liquor of taurine, add alkali firstly to the last mother liquor of taurine and then acid to form salt, or add salt directly; then concentrate and crystallize and filter, to remove lots of impurities in taurine mother liquor. This solves the problem of separating impurities, greatly shortening the time of removing impurities. The last mother liquor can also be decolorizes and additional impurities removes by activated carbon, and the removal of salt by mixing ammonia into the mother liquor to obtain the pure taurine mother liquor, thereby recovering the mother liquor and increasing the product yield.

Abstract: A process comprising: (a) distilling a melt comprising crude alkanesulfonic acid to completely or partly remove low boilers, wherein the low boilers are drawn off at the top of a distillation column or of a one-stage evaporation apparatus and a material stream comprising alkanesulfonic acid, high boilers and residual low boilers is withdrawn at the bottom of the distillation column or of the one-stage evaporation apparatus, (b) sending the stream comprising alkanesulfonic acid, high boilers and residual low boilers into a melt crystallization as the starting melt to obtain crystals formed from the alkanesulfonic acid, hydrates of the alkanesulfonic acid or a mixture of both suspended in mother liquor, (c) performing a solid-liquid separation to remove the crystals from the mother liquor, and (d) optionally washing the crystals to remove mother liquor adhering to the crystals.

Abstract: A process for preparing alkanesulfonic acids from sulfur trioxide and an alkane, wherein sulfur trioxide, the alkane and dialkylsulfonoyi peroxide (DASP) react as components, characterized in that the following steps are performed: a) sulfur trioxide is charged in a high-pressure reactor in a condensed phase; b) a temperature of at least 25° C. is set; c) the gaseous alkane is introduced to the high-pressure reactor until a pressure of at least 10 bar is reached; d) dialkylsulfonoyi peroxide (DASP) is added; and e) after a duration of at least 5 hours, the produced alkanesulfonic acid is withdrawn.

Abstract: The invention relates to a hydrocarbon recovery composition comprising an anionic surfactant, wherein said composition is in the solid state, and to a shaped article comprising said composition. Preferably, said composition is in the form of a powder. Further, the invention relates to a process for treating a hydrocarbon containing formation comprising the steps of a) transporting said composition or shaped article to the location of the hydrocarbon containing formation; b) dissolving said composition or shaped article in water thereby forming an aqueous fluid containing the hydrocarbon recovery composition; c) providing the aqueous fluid containing the hydrocarbon recovery composition to at least a portion of the hydrocarbon containing formation; and d) allowing the hydrocarbon recovery composition to interact with the hydrocarbons in the hydrocarbon containing formation.

Abstract: Disclosed are procatalyst compositions having an internal electron donor which include a substituted phenylene aromatic diester and optionally an electron donor component. Ziegler-Natta catalyst compositions containing the present procatalyst compositions exhibit high activity and produce propylene-based olefins with broad molecular weight distribution.

Abstract: A process for preparing solid alkaline earth metal salts of secondary paraffinsulphonic acids is claimed. This process comprises converting an aqueous solution of a secondary paraffinsulphonic acid and an alkaline earth metal hydroxide into solid form by spray drying.

Abstract: The subject invention provides: a method for producing vinyl sulfonic acid, comprising conducting demetallation of vinyl sulfonate salt, wherein the demetallation rate is not less than 95% according to the following formula: Demetallation rate(%)={(acid value after demetallation)/(acid value before demetallation)}×100; a method for producing vinyl sulfonic acid, comprising conducting demetallation of vinyl sulfonate salt, wherein demetallation is carried out using a strongly acidic ion exchange resin; and said method further comprising the step of purifying a product of the demetallation using a thin film evaporator.

Abstract: Disclosed are procatalyst compositions having an internal electron donor which include a substituted phenylene aromatic diester and optionally an electron donor component. Ziegler-Natta catalyst compositions containing the present procatalyst compositions exhibit high activity and produce propylene-based olefins with broad molecular weight distribution.

Abstract: Disclosed is a solution for an electrochemical process, the solution containing a sulfonic acid and having a low concentration of sulfur compounds, either low or high valence, that are susceptible to reduction and which is intended for use in electrodeposition, batteries, conductive polymers and descaling processes.

Abstract: (1) A vinyl sulfonic acid, having a double bond content of 95 wt. % or more, and (i) a sodium (Na) content of 1 ppm or less, and (ii) a content of at least one metal selected from the group consisting of alkali earth metal and first row transition metal of 1 ppm or less. Alternatively, (2) a vinyl sulfonic acid, having a double bond content of 95 wt. % or more, and (i) a sodium (Na) content of 100 ppb or less, and (ii) a content of at least one metal selected from the group consisting of alkali earth metal and first row transition metal of 100 ppb or less. Further, a homopolymer or copolymer thereof, a production method thereof, or a thin-film distillation apparatus suited for the production thereof.

Abstract: The invention provides a compound which is useful in production of a fluoropolymer and easy to be removed from the produced fluoropolymer, a method of producing the compound, and a method of producing a fluoropolymer using the compound. The invention provides a compound which is represented by Rf1—CH2O—CF2—CHF—Rf2—X, wherein Rf1 represents a fluoroalkyl group containing 1 to 5 carbon atoms, Rf2 represents a fluoroalkylene group containing 1 to 3 carbon atoms, X represents —COOM or —SO3M, and M represents one of H, K, Na, and NH4.

Abstract: The invention relates to a method for isolating concentrated paraffin sulfonic acids from reaction mixtures that are produced during the sulfoxidation of n-paraffins, from which a major part of the sulfuric acid and the paraffin was removed by phase separation and which contain, in addition to the free paraffin sulfonic acids, n-paraffins, water and optionally minor amounts of sulfuric acids. The method according to the invention is characterized by removing paraffin and optionally residual water by vacuum distillation. The paraffin sulfonic acids obtained by distillation have a content of more than 85% by weight of the active substance. The material is pale, odorless and low in sulfuric acid and paraffin.

Abstract: The subject invention provides: a method for producing vinyl sulfonic acid, comprising conducting demetallation of vinyl sulfonate salt, wherein the demetallation rate is not less than 95% according to the following formula: Demetallation rate(%)={(acid value after demetallation)/(acid value before demetallation)}×100; a method for producing vinyl sulfonic acid, comprising conducting demetallation of vinyl sulfonate salt, wherein demetallation is carried out using a strongly acidic ion exchange resin; and said method further comprising the step of purifying a product of the demetallation using a thin film evaporator.

Abstract: Methods of removing alkyl alkanesulfonate esters from aqueous or anhydrous compositions are provided. The invention provides methods for the conversion of alkyl alkanesulfonate esters of the formula RSO3R? to the corresponding acids of the formula RSO3H. The alkyl alkanesulfonate esters are present in an organic medium, which may contain significant amounts of water or which may be anhydrous or substantially anhydrous. In some embodiments, the invention provides methods for purifying aqueous or anhydrous alkanesulfonic acids by removing alkyl alkanesulfonate esters.

Abstract: The invention concerns a process for the continuous drying of a hydrocarbon stream and comprises contacting the hydrocarbon stream with an ionic, liquid drying agent of a salt of a fluorinated sulphonic acid.

Abstract: A process for preparing salts of methallylsulfonic acid in which the reaction mixture produced from the sulfonation is diluted with water and neutralized with a base.

Abstract: In order to reduce the content of sulphuric acid in an alkanesulphonic acid, an aqueous solution of the latter is brought into contact with a basic anion-exchange resin. The invention relates more particularly to the purification of 70% methanesulphonic acid.

Abstract: Disclosed is a process for the preparation of trifluoromethanesulfonic acid anhydride by the steps of (1) forming a mixed anhydride comprising a trifluoromethanesulfonyl acyl residue and a carboxyl residue by contacting trifluoromethanesulfonic acid or a derivative thereof with a carboxyl compound selected from ketene, dialkyl ketenes, carboxylic acids, and derivatives of carboxylic acids and (2) subjecting the mixed anhydride to reactive distillation wherein the mixed anhydride undergoes disproportionation to produce triflic anhydride and a higher boiling carboxylic acid anhydride.

Abstract: A procedure for the generation of organosulfonic acids from solutions of corresponding metal organosulfonate compounds by electrowinning, electrolytically driven hydrolysis or chemically driven hydrolysis is described. Appropriate organosulfonate compounds include the water soluble salts of alkanesulfonic and aromatic sulfonic acids which incorporate metals from Group VIB, VIIB, VIIIB, IB, IIB or VA of the periodic table. The electrowinning and electrolytic techniques described can be applied in divided or undivided cells and can be operated in continuous fashion to provide the greatest efficiency. Hydrolysis based methods can employ either anodic oxidation or oxidation both of which function to oxidize the metal cation(s) present to hydrolytically unstable higher oxidation states.

Abstract: Process for the selective removal of metallic ion and/or ion ammonium impurities from water soluble acid compound comprising the steps of preparing an aqueous solution of the acid compound containing the impurities;contacting the aqueous solution with a cation exchange resin and removing selectively the metal-ion and/or ammonium ion impurities from the solution at condition being effective in the exchange of cations; andwithdrawing an aqueous solution of the acid compound being substantially free of the impurities.

Abstract: A method for hydrolysis of a sulphonic acid ester in a hydrocarbon substrate by aqueous extraction of the hydrocarbon substrate, comprising steps of contacting the hydrocarbon substrate with an aqueous phase containing an ammonia salt, thereby hydrolyzing the sulphonic acid ester to the corresponding sulphonic acid; and recovering the sulphonic acid by separating the aqueous phase from the hydrocarbon substrate.

Abstract: A is a process for removing water from an alkanesulfonic acid such as methanesulfonic acid or ethanesulfonic acid by mixing an azeotropic excess of a phenolic compound with water and the alkanesulfonic acid, then boiling off substantially all of the water, and leaving as a remnant substantially all the alkanesulfonic acid and some of the phenol. This process is particularly useful for recycling an alkanesulfonic acid for a reaction which requires the phenolic compound as one of the reagents. One such reaction is the alkanesulfonic acid catalyzed condensation reaction of a phenolic compound with an .alpha.haloketone to form a chlorinated intermediate of a dihydroxy-.alpha.-alkylstilbene such as 4,4'-dihydroxy-.alpha.-alkylstilbene (DHAMS).

Abstract: The invention relates to a process for removing amino acids and/or aminosulphonic acids from preferably aqueous solutions which contain these as impurities by adsorbing the amino acids on zeolites. Solutions to which the process according to the invention can be applied are produced, for example, from the industrial synthesis of oligopeptides in which the amino acids serving as starting materials are always present in solution, sometimes to a not inconsiderable residual concentration, together with the desired end product.

Abstract: A process of preparing purified alkanesulfonic acid from crude aqueous alkanesulfonic acid containing oxidizable impurities wherein the crude material is treated with a sufficient amount of chlorine to convert the oxidizable impurities to alkanesulfonyl chloride and then hydrolyzing said alkanesulfonyl chloride to alkanesulfonic acid by heating.

Abstract: Racemic Feist's acid is treated with (R)-(+) -.alpha.-methylbenzylamine to yield (1R-trans)-3-methylene -cyclopropane-1,2-dicarboxylic acid, (R)-.alpha.-methylbenzyl-amine (1:1) salt. This salt can then be converted to (1R-trans)-3-methylene-1,2-cyclopropanedicarboxylic acid, dimethyl ester which is an intermediate in the preparation of the antiviral agent [1R-(1.alpha.,2.beta.,3.alpha.)]-2-amino-9-[2,3-bis(hydroxymethyl)cyclobut yl]-1,9-dihydro-6H-purin-6-one. The improved process also enables the recovery of racemic Feist's acid from the resolution.

Abstract: A process for refining a crude fluoroalkylsulfonic acid represented by the general formula RfSO.sub.3 H wherein Rf is a fluoroalkyl group having 1 to 4 carbon atoms into a highly refined one substantially free of impurities, said process comprising the steps of: (a) providing said crude fluoroalkylsulfonic acid, (b) mixing said crude fluoroalkylsulfonic acid with water or said water and an active silica to obtain a mixture, (c) stirring said mixture while maintaining said mixture at a higher temperature than room temperature, and (d) subjecting the mixture treated in said step (c) to distillation.

Abstract: Disclosed is a process for removing by-product phosphorus-containing (PO.sub.x) materials, alendronate and alendronate byproducts from crude mother liquors in an omega amino-1-hydroxy-C.sub.2 -C.sub.6 alkylidene-1,1-bisphosphonic acid synthesis process, e.g. alendronate sodium. Calcium chloride is added first to the crude mother liquors, then calcium oxide to precipitate the PO.sub.x materials, then neutralized to about pH 7 to complete precipitation. Substantially all of the alendronate sodium active ingredient is removed from the precipitate. Following filtration, the PO.sub.x filtercake can then be disposed of by incineration, landfilling or reclamation of usable phosphorus as fertilizer. The remaining filtrate can then be further treated in an environmentally acceptable manner by wastewater treatment or recycling to the process.

Abstract: Dehydrated compositions are obtained by: combining a hydrous composition, e.g., a hydrous electrolyte salt, with inert fluorochemical liquid; heating the resulting mixture in a vessel to volatilize water and inert fluorochemical liquid therein until the water content of the mixture is reduced to a desired level; optionally treating the resulting dehydrated mixture with another chemical material, e.g., a polar organic solvent; and optionally subjecting the dehydrated mixture or the treated dehydrated mixture to further treatment, e.g., separation of the mixture. Liquid electrolytes suitable for use in battery applications can be prepared by this method.

Abstract: The description is of a process for the production of light-colored lower alkane sulfonic acids, especially methane sulphonic acid, by reacting the corresponding alkyl halide with alkaline halides and obtaining the free alkane sulphonic acid. In the process of the invention, the reaction is performed as a liquid/liquid reaction at temperature not exceeding 120 degrees C., and at such high pressures that even the lower alkyl halide is in the liquid phase at the reaction temperature, the aqueous reaction mixture is reduced by water content of some 50% wt. at the most, the alkaline sulphonic acid is liberated from its alkaline salt by the addition of HCl, the solid salt phase still remaining in the reaction mixture is separated out and the free alkaline sulphonic acid is obtained from the liquid phase.

Abstract: When 2-naphthylamine-1,5-disulphonic acid is precipitated from the as-sulphonated reaction mixtures by dilution, a purer product is obtained, with a low level of adherent sulphuric acid, if the precipitation by dilution of the reaction mixture is carried out under precisely defined conditions.

Abstract: A process for separating and recovering paraffin sulphonic acids from mixtures with water and sulphuric acid is described, consisting of: bringing such a mixture into contact under extraction conditions with a saturated aliphatic or cycloaliphatic liquid hydrocarbon; separating an aqueous liquid phase containing sulphuric acid from an organic liquid phase consisting of the extraction solvent containing the paraffin sulphonic acids; and recovering the paraffin sulphonic acids from said organic liquid phase. The process is particularly applicable to products obtained from processes involving the sulphoxidation of paraffins with sulphur dioxide and oxygen, catalyzed by U.V. radiation.

Abstract: The invention is concerned with an improved process for preparing paraffin-sulfonic acids containing from 10 to 20 carbon atoms, as well as their salts. The process comprises the initial reaction of sulfo-oxidation of the concerned mixture of n-paraffins, the removal of unreacted n-paraffins from the reaction mixture, the removal of the excess of SO.sub.2 from said mixture, and the removal from the reaction mixture of the therein formed sulfuric acid, with the simultaneous recovery of the end product.After the removal of SO.sub.2, to the reaction mixture hydrogen peroxide is added and the so obtained solution is submitted to one treatment selected from among the following treatments:(a) addition of an alcohol with a number of carbon atoms comprised within the range of from 4 to 8;(b) heating up to a temperature comprised within the range of from 50.degree. to 150.degree. C. and vacuum distillation under a residual pressure comprised within the range of from 5 to 500 mm.sub.

Abstract: A process for dehydrating phenol sulfonate salts by azeotropic distillation of water wherein a surfactant such as sodium dodecylbenzene sulfonate is used to prevent the salts from agglomerating and plating out on the walls of the reaction vessel.

Abstract: The mixture from which sulphuric acid must be separated according to the present invention are those which derive from the sulphoxidation of (C.sub.12 -C.sub.8)-n-paraffins with SO.sub.2 and O.sub.2 in the presence of water and of U.V. light at a temperature comprised within the range of from 25 to 50.degree. C., after the removal of n-paraffins, which separate spontaneously, and of SO.sub.2 excess. In order to remove said sulphuric acid, the refined mixture, possibly diluted with water, is mixed with one or more halogenated solvents, the separation being obtained of water and sulphuric acid from the refined mixture, to the total mixture (with the two phases) a cosolvent is added, which is constituted by alcohols or ethers, with the separation being obtained of a phase constituted by H.sub.2 O and H.sub.2 SO.sub.4, which is removed. The residual organic phase, practically free from sulphuric acid, is submitted to the removal of solvents and cosolvents by means of conventional techniques.

Abstract: The purpose of the process of the present invention is to remove excess sulfuric acid from a mixture of paraffin-sulfonic acids free or substantially free, from paraffins.In order to remove said sulfuric acid, according to the process of the present invention, the paraffin-sulfonic acid mixture is mixed with one or more halogenated solvent(s), possibly in mixture with sulfuric acid to form a two phase mixture consisting of an organic phase containing paraffin-sulfonic acids dissolved therein and an aqueous phase substantially containing sulfuric acid. The organic phase is then treated with sulfuric acid and the organic phase and aqueous phase are then separated and the organic phase is submitted to evaporation, for the removal of the halogenated solvent(s), and with the concentrated paraffin-sulfonic acids being obtained.

Abstract: The invention relates to a process for the separation and recovery of naphthalenesulfonic acids from aqueous solutions. In this, the naphthalenesulfonic acids are adsorbed on basic ion exchangers and subsequently desorbed again, preferably with the aid of an alkaline liquor, from which the alkali metal sulfonates are then precipitated by cooling.

Abstract: A process for the removal of water from a lower alkanesulfonic acid-water mixture by causing the mixture to run down the internal walls of two vertical evaporator columns operated in series, is disclosed herein.

Abstract: A fluorocarbon carboxylic acid Rf(COOH).sub.m (Rf is C.sub.1 -C.sub.10 perfluoroalkyl group, m is 1 or 2) is prepared by the steps of hydrolyzing Rf(COF).sub.m with water to obtain an acidic solution, neutralizing the acidic solution with aqueous solution of KOH to form Rf(COOK).sub.m, precipitating and separating Rf(COOK).sub.m from the solution and converting Rf(COOK).sub.m into Rf(COOH).sub.m by acid decomposition. The content of free fluorine can extremely be reduced by treating Rf(COOK).sub.m with sulfuric acid and silica. The mother liquor is recycled after removing KF by treatment with a metal hydroxide and replenishing with KOH. In preparing a fluorocarbon sulfonic acid RfSO.sub.3 H (Rf is C.sub.1 -C.sub.3 perfluoroalkyl group) in substantially the same way, RfSO.sub.3 K is formed in aqueous solution of KOH by bringing gaseous RfSO.sub.2 F into contact with the KOH solution under normal pressure, while controlling the feed rate of RfSO.sub.

Abstract: In preparing a fluoroalkylsulfonate RfSO.sub.3 M, where Rf is a perfluoroalkyl gruop having not more than 6 carbon atoms and M is an alkali metal, by neutralization reaction between a fluoroalkylsulfonic acid RfSO.sub.3 H and an alkali metal carbonate or hydroxide, the reaction is carried out under acidic conditions such that at the end of the reaction pH of the reaction liquid is lower than 6, and preferably not higher than 3. By so maintaining the reaction liquid acidic, the obtained RfSO.sub.3 M becomes very low in the concentrations of anionic impurities such as free fluorine, free chlorine and carbonate radical and, besides becomes low in moisture absorbency.

Abstract: A method for decolorizing color contaminated alkanesulfonic or arenesulfonic acids represented by Formula I:RSO.sub.3 H Icomprises mixing the color contaminated acid with an effective amount of a dialkanesulfonyl or diarenesulfonyl peroxide represented by Formula II:R.sup.1 SO.sub.2 --O--O--O.sub.2 SR.sup.1 IIand allowing the mixture to stand at a temperature and for a period of time sufficient to allow the color of the acid to decrease to the desired level, wherein R in Formula I and R.sup.1 in Formula II may each represent an alkyl radical or an aryl radical, with the proviso that R in Formula I may be the same as or different from R.sup.1 in Formula II.

Abstract: The removal of oxidizable organic impurities which include alkylthiolsulfonate from alkanesulfonic acids by treatment with an ozone containing gas is disclosed. The treated products have improved color and odor and exhibit improved long-term color stability.