Hewlett-packard Company

Hoechst Aktiengesellschaft

Heinz Engelhardt

Stefan Mullner

Peter Haas

Konstantin Shoiket

Thomas Schmitt

A capillary made of plastics material that is suited for use in capillary electrophoresis. The capillary has its inner surface chemically modified for the generation of properties different from those of the original plastic capillary material. In the process of producing such capillaries, a premanufactured capillary is treated with a chemical reagent which generates functional groups directly on the capillary surface or generates attachment sites, on the capillary surface to which functional groups are later bonded.

Capillary made of polymer material having a modified inside surface and

A process for obtaining pharmacologically active compounds from complex mixtures of substances Free organic acids, hydroxy acids, fatty alcohols, sugars and hydroxy-substituted steroids are obtained from complex mixtures of substances by mixing the material to be extracted with a polar solvent, drying the resulting mixture, subsequently silylating, esterifying or acylating, and extracting the resulting material with a supercritical fluid under a pressure of more than 200 bar.

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Saarbrucken, Germany

Heinz Engelhardt