Abstract:
The invention relates to a method of preparing surface-active alcohols and surface-active alcoholic ethers which are well suited for use as surface-active agents or for the preparation of surface-active agents. To this end, olefin mixtures containing a predominant share of branched dodecenes are prepared from olefin mixtures containing less than 30 % by weight linear hexene isomers, using a catalyst containing nickel, and derivatized to form surface-active alcohols which are then possibly alkoxylated. The invention also relates to the use of said surface-active alcohols and surface-active alcoholic ethers for the preparation of surface-active agents by glycosidation or polyglycosidation, sulfation or phosphation.
Abstract:
The invention relates to a method for producing fatty acid polyglycol ester sulphates of formula (I) R COO(AO)nSO3M, wherein R CO represents a linear or branched, aliphatic, saturated and/or unsaturated acyl radical with 6 to 22 carbon atoms, AO represents CH2CH2O, CHCH3CH2O and/or CH2CHCH3O, n represents numbers from 0.5 to 5 and M represents a cation, by sulfation of fatty acid polyglycol esters followed by neutralisation. The inventive method is characterised in that the entire neutralisation process is carried out at a pH of 5 to 9.
Abstract:
Fluorinated (poly)sulfates, halosulfonates, halohydrins and epoxides, as well as processes for producing them are disclosed. These compounds have the formulas R2R3FCCHXCHR1(OSO2)nZ, wherein each R?2 and R3¿ is independently fluorine or perfluoroalkyl, R1 is H or -CFR2R3, X is selected from chlorine, bromine and iodine, Z is selected from the group consisting of chlorine, bromine and -OCHR?1CHXCFR2R3¿ and n is an integer from 1 to 6, R2R3CHXCH(OH)CFR2R3, wherein each R?2 and R3¿ is independently fluorine or perfluoroalkyl, and X is chlorine, bromine or iodine, formula (A), wherein each R2 and each R3 is independently fluorine or perfluoroalkyl.
Abstract:
To obtain highly sulphated fatty acids, hydroxy fatty acids or oxalkylated hydroxy fatty acids, the reaction mixture obtained from the sulphatation of unsaturated fatty acid esters and/or saturated hydroxy fatty acid esters and/or oxalkylated hydroxy fatty acid esters is neutralized, separated if necessary from the brine, diluted with water and hydrolysed at a temperature between 20°C and 160°C after addition of a quantity of lye whose molar content is not greater than that of the organically bound sulphuric acid. After separation of the phases containing the non-sulphated starting products and the highly sulphated fatty acids, the latter are isolated from the aqueous phase.
Abstract:
A process comprises continuously adding a first stream and a second stream to a sulfonation vessel, wherein the first stream comprises aminoethanol sulfate ester (AES) and the second stream comprises an aqueous solution of sodium sulfite (Na2SO3). The process comprises continuously mixing the AES and the aqueous solution of Na2SO3 in the sulfonation vessel, thus producing a mixture. The process comprises continuously subjecting the mixture to heat in the presence of an inert gas, thus converting the AES to the taurine via sulfonation. In an aspect, the AES has a residence time of no more than four hours in the sulfonation vessel. In an aspect the heating step is conducted at a temperature of at least 115° C and a pressure of at least 200 psi.
Abstract:
The present invention relates to a process for preparing high-concentration, flowable aqueous fatty alkyl sulfate solution, said process comprises (i) ethoxylation of fatty alcohol with very low of about 0.3 to about 0.8 moles of ethylene oxide, and (ii) sulfating the ethoxylated fatty alcohol with specific reaction conditions, and (iii) neutralizing the sulfation product with an aqueous base. The obtained fatty alkyl sulfate solution contains at least 65% by weight of mixture of fatty alkyl sulfates and fatty alkyl ether sulfates in a weight ratio in the range from about 80:20 to about 50:50 wherein the average number of moles of ethylene oxide (EO) of the mixture is between 0.3 to 0.8; less than 3 ppm of dioxane; and water, and wherein the solution does not contain any antimicrobial or preservatives and is homogeneous, flowable and pumpable at 25°C.
Abstract:
The subject matter of the present invention relates to highly-concentrated compositions of salts of alkyl polyalkoxy sulphates, whereby in total at least 2/3 of all alkoxy unit of the alkyl polyalkoxy sulphates are propoxy units, a method of their production as well as their use in oil and gas field applications.
Abstract:
A process for the preparation of acylated secondary alcohol alkoxylates, said process comprising : (i) reaction of one or more internal olefins with one or more carboxylic acids in the presence of a catalyst composition in order to form one or more carboxylic acid esters; (ii) reaction of one or more carboxylic acid esters from step (i) with one or more alkylene oxide reactants, in the presence of a catalytically effective amount of a catalyst composition comprising: (a) one or more alkaline earth metal salts of carboxylic and/or hydroxycarboxylic acids and/or hydrates of the former; (b) an oxy-acid selected from sulphuric acid and ortho-phosphoric acid; (c) an alcohol and/or an ester; and/or products of the reciprocal reactions of (a), (b) and/or (c) in order to form one or more acylated secondary alcohol alkoxylates; and optionally (iii) hydrolysis or transesterification of one or more acylated secondary alcohol alkoxylates from step (ii) in order to form one or more secondary alcohol alkoxylates; and a process for making secondary alcohol alkoxy sulphates comprising the steps of: preparing secondary alcohol alkoxylates by the afore-mentioned process; and sulphating the secondary alcohol alkoxylates.
Abstract:
Suggested is a process for preparing an adjuvant for agricultural applications, characterized in that a polyhydric alcohol, polyol, saccharide, or polysaccharide is reacted with sulphamic acid.