Abstract: Disclosed is the method for producing an anionic surfactant powder, including removing impurities by introducing gas into a crude anionic surfactant containing water in a content of 0.01 to 5% by weight in a granulator or drier, having an agitating blade. Also disclosed is the method for producing an anionic surfactant powder, including introducing a gas along with the surface of an inner wall of a granulator or drier having an agitating blade at a reduced pressure to produce the anionic surfactant powder.

Abstract: The present invention relates to a method of removing SO2 contaminants from dimethyl sulfate (DMS) by treatment with an oxidizing agent, and to a process for the preparation of odor free fatty acid trialkanolamine esters quaternized with DMS which is substantially free of SO2 contaminants.

Abstract: The present invention relates to a method of removing SO2 contaminants from dimethyl sulfate (DMS) by treatment with an oxidizing agent, and to a process for the preparation of odour free fatty acid trialkanolamine esters quaternized with DMS which is substantially free of SO2 contaminants.

Abstract: The present invention relates to compounds of the Formula I wherein R1, R2, R3, m, and n are as defined. Compounds of the Formula I have activity inhibiting production of A?-peptide. The invention also relates to pharmaceutical compositions and methods for treating disorders and diseases, for example, neurodegenerative and/or neurological disorders, e.g., Alzheimer's disease, in a mammal comprising compounds of the Formula I.

Abstract: Fatty alcohol (ether) sulfates which are obtained by co-sulfating mixtures of (a) C.sub.8-22 fatty alcohols and (b) C.sub.8-22 fatty alcohol ethoxylates containing an average of 1.9 to 3.9 ethylene oxide units in a ratio by weight of 20:80 to 80:20, and then neutralizing the mixtures thus co-sulfated with aqueous bases. The substances have distinctly improved low-temperature behavior in relation to ether sulfates with comparable degrees of ethoxylation, and are useful as components of surface-active compositions.

Abstract: A process for making high active alkyl sulphate solutions comprising premixing alcohol and/or alkoxylated nonionic surfactant with an organic amine and adding sulfuric acid to the premix to produce a neutralized product having substantially no water is provided. The weight ratio of the sulfuric acid additive to the premix is from 0.5:1 to 9:1.

Abstract: A process for improving the yield of crystallization of L-phenylalanine monomethyl sulfate from an aqueous solution containing L-phenylalanine and monomethyl sulfate, by adding an effective crystallization improving amount of a salt of an inorganic or organic acid with an alkali metal, an alkaline earth metal or ammonium, to the aqueous solution.

Abstract: The present invention provides crystals of L-phenylalanine monomethyl sulfate which have low solubility compared to L-tyrosine and D-phenylalanine. The L-phenylalanine monomethylsulfate crystals are obtained by subjecting a solution containing monomethyl sulfuric acid and phenylalanine to crystallization.Further, the present invention also provides a process for recovering L-phenylalanine from a water layer by neutralizing the esterified reaction, extracting an ester of L-phenylalanine therefrom with an organic solvent, and recovering remaining L-phenylalanine in the water layer as L-phenylalanine monomethylsulfate. L-phenylalanine monomethyl sulfate is obtained by esterifying L-phenylalanine and methanol in the presence of sulfuric acid, neutralizing the esterified solution with a base in the presence of water, extracting the produced L-phenylalanine methyl ester from the neutralized solution with an organic solvent, and then crystallized the resultant water layer under acidic condition.

Abstract: A process for the preparation of alkyl sulfate powders, which entails spraying an aqueous solution or dispersion of alkyl sulfates into a head part of a spraying tower through single-component nozzles under pressure sufficient to form a spray mist, and drying the resulting spray mist in co-current manner using an inert gas at a temperature sufficient to afford a powder having a bulk density of at least 300 g/l.

Abstract: A process for producing lower alcohols is presented in which an olefinic feed and H.sub.2 SO.sub.4 react to form a mixture comprising alkyl sulfates, alkyl disulfates, fat acid, and nonpolar hydrocarbons. The mixture is separated into two phases, a nonpolar phase comprising nonpolar hydrocarbons and a polar phase comprising alkyl sulfates, alkyl disulfates, and fat acids. A rag-layer that forms between the nonpolar and polar phases comprising carbonaceous particulate material is removed by contact with an extraction reagent. This can be a slip stream comprising an etheric derivative of the olefinic feed and an oligomeric derivative of the feed which is withdrawn from a subsequent step the process. This forms a separate hydrocarbon phase which is then extracted. The sulfates are then hydrolyzed to form alcohol.

Abstract: This invention relates to solid secondary alkyl sulfate-containing surface active compositions which are formed by crystallization and which contain at least about 80 percent by weight of secondary alkyl sulfate. These compositions are substantially free of unreacted organic matter and water. The invention further relates to a process for preparing these solid secondary alkyl sulfate-containing compositions.

Abstract: This invention relates to a process for preparing solid and non-solid secondary alkyl sulfate-containing surface active compositions. The solid secondary alkyl sulfate-containing surface active compositions are formed by crystallization, and the non-solid secondary alkyl sulfate-containing surface active compositions are recovered in a glycol solvent. These compositions are substantially free of unreacted organic matter and water.

Abstract: This invention relates to a process for preparing secondary alkyl sulfate-containing surface active compositions substantially free of unreacted organic matter and water, which process comprises: a) sulfating a mixture of a detergent range olefin having from about 8 to about 22 carbon atoms and a detergent range alcohol having from about 8 to about 22 carbon atoms with a sulfating agent, b) neutralizing the product of step a) with a base dispersed in a nonionic surfactant having a boiling point higher than that of said detergent range olefin and its corresponding secondary alcohol, c) saponifying the product of step b), d) passing the product of step c) through a thin film evaporator to evaporate unreacted organic matter from said product and recovering said product.