Basf Se Corporation

Lonza Inc.

Constanze Franzke

Robert Baumann

Armin Stamm

Marta Reinoso Garcia

Markus Hartmann

Frank Jaekel

Stefan Ellinger

Axel Franzke

Carsten Sueling

Gaetano La Delfa

Thomas Greindl

Martina Furrer

Cornelia Zur Täschler

Magnus Abgottspon

Process for preparation of a mixture of methyl glycine diacetic acid (MGDA) or its respective mono-, di-, trialkali metal salt or its respective mono-, di- or tri-ammonium salt or mixtures thereof, and glutamic acid diacetic acid (GLDA) or its respective mono-, di-, tri-, or tetra-alkali metal or mono-, di-, tri- or tetra-ammonium salt or mixtures thereof, wherein said process com-prises the steps of: (a) dissolution in water of (a1) alanine in its L- or D-enantiomeric form or its respective monoalkali metal salt or mixtures thereof, and (a2) glutamic acid as L- or D-enantiomer or its respective mono-, or dialkali metal or mixtures thereof, wherein the molar ratio of alanine to glutamic acid is in the range of from 1:9 to 9:1, (b) converting the mixture obtained in step (a) with formaldehyde and hydrocyanic acid or alkali metal cyanide to the corresponding dinitriles, (c) saponification of the dinitriles resulting from step (b).

Process for making mixtures of enantiomers of MGDA and GLDA

Process for manufacturing a crystalline alkali metal salt of the general formula (I) [R&#x2014;CH(COO)&#x2014;N(CH&#x2014;COO)]M(I) wherein Mis selected from alkali metal cations, same or different, Ris selected from C-C-alkyl and CHCHCOOM, comprising the step of (b) crystallizing said alkali metal salt from an aqueous solution containing in the range of from 5 to 30% by weight of alkali metal hydroxide, referring to said aqueous solution.

Process for making a crystalline alkali metal salt of a complexing agent, and crystalline complexing agent

Container comprising a single unit dose of a detergent composition containing at least one complexing agent (A) dissolved in an aqueous medium, said complexing agent (A) being a mixture of the L- and D-enantiomers of glutamic acid diacetic acid (GLDA) or its respective mono-, di-, tri- or tetraalkali metal salts or its mono-, di-, tri- or tetraammonium salts, said mixture containing predominantly the respective L-isomer with an enantiomeric excess (ee) in the range of from 5 to 90%, wherein said container is made from a polymer.

Container comprising a detergent composition containing GLDA

Mixtures comprise (A) 90 to 99.9% by weight of a mixture of L- and D-enantiomers of methyl glycine diacetic acid (MGDA) or its respective mono-, di- or trialkali metal or mono-, di- or triammonium salts, said mixture containing predominantly the respective L-enantiomer with an enantiomeric excess (ee) in the range of from 10 to 99%, and (B) in total 0.1 to 10% by weight of the diacetic acid derivative of at least one amino acid selected from valine, leucine, isoleucine, and tyrosine, as free acids or respective mono-, di- or trialkali metal or mono-, di- or triammonium salts, percentages referring to the sum from (A) and (B).

Mixtures of chelating agents including an L-enantiomer-rich MGDA, and process for making such mixtures

Aqueous solution containing in the range of from 60.5 to 75% by weight of a mixture of trialkalimetal salts of the L-and D-enantiomers of methyl glycine diacetic acid (MGDA), said mixture containing predominantly the respective L-isomer with an enantiomeric excess (ee) in the range of from 3 to 97%, wherein said trialkali metal salts have the general formula (I) [CH&#x2014;CH(COO)&#x2014;N(CH&#x2014;COO)]KNa(I) wherein x is in the range of from zero to 2.9.

Solutions of trialkali metal salts of MGDA with an excess of L-enantiomer, their manufacture and use

Disclosed are halogenated diethyltoluenediamines of formula wherein either Ris an amino group and Ris chlorine or bromine, or Ris an amino group and Ris chlorine or bromine, and isomeric mixtures thereof. The halogenated diethyltoluenediamines of formula I are useful as chain extenders for polyurethanes and hardeners for epoxy resins having a relatively long gel time.

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Duesseldorf, Germany

Constanze Franzke