Abstract: The invention relates to an improved process for vaporizing organic compounds and the further conversion thereof.

Abstract: The invention relates to an improved process for vaporizing organic compounds and the further conversion thereof.

Abstract: The present invention relates to a process for the continuous preparation of a 1,3-dioxolan-2-one wherein a discharge from the reaction zone is subjected to a fractionation by means of a semipermeable membrane in order to separate off polymeric by-products.

Abstract: A process for preparing hydroxyalkyl carboxylates comprises reacting a carboxylic acid with an alkylene oxide in the presence of a multimetal cyanide compound of the formula I

Abstract: A process for the continuous production of 1,3-dioxolan-2-ones such as ethylene carbonate or propylene carbonate by reacting a corresponding oxirane with carbon dioxide in the liquid phase in the presence of a catalyst comprises conducting the reaction in a two-part reactor in whose first part the reaction is taken with backmixing to a conversion of not less than 80% of the oxirane II and in whose second part the reaction is completed under nonbackmixing conditions, and passing the carbon dioxide in countercurrent to the oxirane II in the entire reactor.

Abstract: 2-Hydroxy-3-aminopropionic acid derivatives of the general formula I ##STR1## where X is hydrogen, an alkali metal or ammonium which may be substituted by C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -hydroxyalkyl, and Y.sup.1 and Y.sup.2 have the following meanings:A) .omega.-substituted alkyl of the general formula--(CH.sub.2).sub.m --R.sup.1where R.sup.1 is hydrogen, hydroxyl or --COOX, --NH--CH(COOX)--CH.sub.2 --COOX or --NY.sup.1 Y.sup.2 and m is from 1 to 20, although m is not 1 when Y.sup.1 and Y.sup.2 are identical and R.sup.1 is --COOX,B) a polyether group of the general formula--(CH.sub.2 CH.sub.2 O).sub.m --R.sup.2where R.sup.2 is hydrogen or C.sub.1 -C.sub.4 -alkyl,C) a .beta.-hydroxyl-substituted group of the general formula ##STR2## where R.sup.3 is --COOX, --CH.sub.2 OH or --CH.sub.2 --NY.sup.1 Y.sup.2 and n is from 1 to 5,D) an .alpha.-carboxyl-substituted group of the general formula ##STR3## where R.sup.4 is hydrogen, methyl or hydroxymethyl and R.sup.

Abstract: 2-Methyl- and 2-hydroxymethyl-serine-N,N-diacetic acid and derivatives thereof of the general formula I ##STR1## in which X denotes hydrogen, alkali metal or ammonium which may or may not be substituted by C.sub.1 -C.sub.4 -hydroxyalkyl groups and Z denotes hydrogen or hydroxyl.The compounds I serve as complexing agents for heavy metal ions or alkaline earth metal ions and as bleach stabilizers or builders in detergents and cleaning formulations.

Abstract: Glycerol aminocarboxylates of the formula ##STR1## where n is from 0 to 10 andR is ##STR2## where L is iminodiacetate, aspartate, glutamate, sarcosinate, glycinate, serinate, hydroxyaspartate, ethanolaminoacetate, diethanolamino, alanate or taurinate andX is hydrogen, an alkali metal, ammonium or substituted ammonium,are prepared by esterifying glycerol or polyglycerols which contain up to 10 glycerol units with maleic anhydride or itaconic anhydride and addition of compound L-H where L is as defined above to the double bonds of the esters, and are used as complexing agents.

Abstract: Serine-N,N-diacetic acid and derivatives thereof are prepared in various ways and used in particular as complexing agents, bleaching agent stabilizers and builders in detergents.

Abstract: A process for preparing an etherified polyoxyalkylene derivative of the formula ##STR1## wherein R.sup.1 and R.sup.4 are identical or different and are each independently C.sub.1 -C.sub.20 alkyl, C.sub.3 -C.sub.5 alkenyl, C.sub.6 -C.sub.20 aryl, C.sub.6 -C.sub.20 alkyl aryl, C.sub.6 -C.sub.20 cycloalkyl, and mixtures thereof, R.sup.2 and R.sup.3 are identical or different and independent of each other are H, CH.sub.3, CH.sub.3 CH.sub.2, and mixtures thereof, m, m' and n are identical or different and are each greater than or equal to zero, with the proviso that m+m'+n is from 3 to 300; by reacting a polyoxyalkylene compound of the formula.

Abstract: Polyethers I ##STR1## R.sup.1 and R.sup.2 are each C.sub.1 -C.sub.20 -alkyl, n and m are each from 1 to 30 and r is from 0 to 20, are used mainly as surfactants in detergent and cleaning agent formulations.

Abstract: Serine-N,N-diacetic acid and derivatives thereof are prepared in various ways and used in particular as complexing agents, bleaching agent stabilizers and builders in detergents.

Abstract: Etherified polyoxyalkylene derivatives of the formula ##STR1## where R.sup.1 is hydrogen, C.sub.1 -C.sub.20 -alkyl or C.sub.3 -C.sub.5 -alkenyl, R.sup.2 and R.sup.3 independently of one another are each hydrogen, methyl or ethyl, R.sup.4 is C.sub.1 -C.sub.4 -alkyl and m and n are identical or different and are each greater than or equal to 0, with the proviso that the sum of m and n is from 3 to 300, are prepared by reacting the corresponding hydroxyl-containing polyoxyalkylene derivative with a dialkyl sulfate in the presence of an alkali metal hydroxide by a process in which the reaction is carried out at from 20.degree. to 60.degree. C. in the presence of an aqueous solution of an alkali metal hydroxide, the concentration of alkali metal hydroxide during the entire duration of the reaction being not less than 35% by weight, based on the aqueous phase, and not less than 1 mole of dialkyl sulfate and not less than one mole of alkali metal hydroxide are used per mole equivalent of organic hydroxyl groups.

Abstract: 2-Hydroxy-3-aminopropionic-N,N-diacetic acid and derivatives thereof are used in particular as complexing agents, bleaching agent stabilizers and builders in detergents.