Merck Patent Gesellschaft MIT Beschrankter Haftung

Peter Muller

Willi Wintermeyer

Heinrich J Nikolaus

Roland Vogel

Winfried Trinkaus

Dieter Orth

Hans-Eckart Radunz

Werner Gunkel

Rolf Wittmann

Frank Joseph

Helmuth Krauss

Jurgen Butzke

Fritz Reiff

Gunther Sattler

Klaus Kreher

Bernd Simon

Hans-Jurgen Legeler

Hanns-Gerd Dammann

A sliding valve for withdrawing liquid or gaseous chemical products from a container has a cylindrical valve spool which slides axially in a bore through a valve housing. A first annular groove of the valve spool connects, in the open position of the valve, a product supply line to a product withdrawal line. On one side of this first annular groove there is a second annular groove which, in the open position, connects a gas supply line to a gas withdrawal line. An annular groove on the other side is connected to the second annular groove. By this arrangement, protective gas is admitted to the valve spaces on either side of the first annular groove, which handles the product, with the result that escape of the product to the outside, or penetration of impurities, are positively prevented.

Valves for chemical containers

Columns for high-pressure liquid chromatography utilize a tube which can be filled with a sorbent. The tube has an inlet device and an outlet device at the ends thereof and includes supporting elements therein to stabilize the sorbent packing.

Chromatography column and process for packing same

13-thiaprostaglandins of Formula I ##STR1## wherein B is --CH.sub.2 --CH.sub.2 -- or --CH.dbd.CH--,

13-thiaprostaglandins having cytoprotective activity

A process for preparing diacetone-ketogulonic acid comprises oxidizing diacetonesorbose to diacetone-ketogulonic acid to an extent of about 30-95% by electrochemical oxidation or O.sub.2 oxidation; electrodialysing the resultant reaction solution to separate the pure diacetoneketogulonic acid from the unoxidized diacetonesorbose; and recycling the unoxidized diacetone-sorbose to the oxidation step.

Preparation of diacetone-ketogulonic acid

A method of suppressing appetite which comprises ingesting an amount of 20-60 grams effective to suppress appetite of a granulated dietetic foodstuff having a low rate of decomposition in the digestive tract consists essentially of a dried mixture of fat-free or low fat milk curds and casein in a dry solids ratio of about 1:1 to about 1:5, and having a particle size between about 0.5 and 5 mm, which is prepared by a process which comprises the steps of incorporating 2-5 parts of casein into 6 parts of moist milk curds; allowing the mixture to stand for a period of time sufficient to bind the excess water in the curds by swelling of the casein; whereby formation of a granulated and dried product is facilitated compared to milk curds alone.

Dietetic foodstuff and its production

An improved granular dietetic protein concentrate is produced by incorporating 2 to 5 parts of casein into 6 parts of moist fat-free or low fat milk curds; allowing the mixture to swell; and granulating and drying the swollen mixture to a product containing curds and casein in a dry solids ratio of from 1:1 to 1:5.

Growing community of inventors

Darmstadt, Germany

Peter Muller