Basf Aktiengesellschaft

Basf Se Corporation

Basf Corporation

Stefan Birnbach

Alfred Oftring

Richard Baur

Rolf Fikentscher

Ekhard Winkler

Felix Richter

Peter Zehner

Charalampos Gousetis

Jochen Houben

Hermann Luyken

Toni Dockner

Wolfgang Trieselt

Johannes Perner

Alexander Kud

Ralf Boehling

Jay G Otten

Regina Benfer

Michael Kneip

Werner Bochnitschek

Werner Weinle

Ulrich Goeckel

Jarren Peters

Josef Mueller

Klaus Wulz

J&uuml;rgen Mohr

Achim Gritsch

Walter Bieg

Bernd Ruge

Peter Petersen

Ronald E Greenough

Michael Schipper

Alois Wellisch

Albert Steiner

Hans-Martin Mugrauer

Hartwig Voß

Ralf BÖHLING

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

Single chamber vaporizer and use thereof in chemical synthesis

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.

Method for the continuous production of 1,3-dioxolan-2-ones

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:

Use of 2-hydroxy-3-aminopropionic acid derivatives as complexing agents,

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.

2-methyl- and 2-hydroxymethyl-serine-N,N-diacetic acid and derivatives

Glycerol aminocarboxylates of the formula ##STR1## where n is from 0 to 10 and

Glycerol aminocarboxylates and preparation and use thereof

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.

Serine-N,N-diacetic acid and derivatives as complexing agents and

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.

Method for the preparation of methyl ethers of polyether polyols

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.

Polyethers

Preparation of serine-N,N-diacetic acid and derivatives as complexing

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.

Etherification of polyoxyalkylene derivatives

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.

2-Hydroxy-3-aminopropionic-n,n-diacetic acid and derivatives thereof,

Growing community of inventors

Ludwigshafen, Germany

Stefan Birnbach