Weylchem Wiesbaden Gmbh

Weylchem Performance Products, Gmbh

Said Kchirid

Roman Morschhäuser

Judith Preuschen

Bo Kuhse

Hans Jürgen Scholz

Disclosed are compounds of formula (I)(ROOC)&#x2014;R(OH)&#x2014;COO&#x2014;(CH&#x2014;O)&#x2014;OC&#x2014;R(OH)&#x2014;(COOR)&#x2003;&#x2003;(I)wherein Rand Rindependently of one another are hydrogen, a metal cation, an ammonium cation, C-C-alkyl, cycloalkyl with three to nine ring carbon atoms, aryl with five to ten ring carbon atoms, aryl that is substituted with one or two alkyl groups, aryl that is connected via an alkylene group with the carboxyl group, &#x2014;(CH&#x2014;O)&#x2014;H or &#x2014;O&#x2014;R(COOR1),Rand Rindependently of one another are aliphatic hydrocarbon residues with one to eight carbon atoms,a and b independently of one another are integers from 1 to 4,c is an integer from 0 to 4,d is an integer from 1 to 4,n is 2, 3 or 4, andm is 1, 2, 3 or 4, with the proviso thatRand Rmay be different within a molecule within the given definitions. These compounds are characterized by a very good complexation power for metal cations and can be used in detergents and cleaning agents, in oil extraction and for water softening.

Hydroxy carboxylic acid esters, manufacturing process thereof and use thereof

Disclosed is a continuous process for concentrating or separating of vitamin E, sterols and/or terpenes from oily or fatty mixtures of biological origin comprising the measures: The treatment of the oily or fatty mixtures proceeds under mild conditions so that the ingredients vitamin E, sterols and/or terpenes contained therein are damaged to an negligible amount and remain in the residue in high concentration.

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Heigenbrücken, Germany

Said Kchirid