Ugine-Kuhlmann

Voltalef Ugine Kuhlmann, Pierre-Benite, France molding powders and pellets... 

In the initial thiocyanate-complex Hquid—Hquid extraction process (42,43), the thiocyanate complexes of hafnium and zirconium were extracted with ether from a dilute sulfuric acid solution of zirconium and hafnium to obtain hafnium. This process was modified in 1949—1950 by an Oak Ridge team and is stiH used in the United States. A solution of thiocyanic acid in methyl isobutyl ketone (MIBK) is used to extract hafnium preferentially from a concentrated zirconium—hafnium oxide chloride solution which also contains thiocyanic acid. The separated metals are recovered by precipitation as basic zirconium sulfate and hydrous hafnium oxide, respectively, and calcined to the oxide (44,45). This process is used by Teledyne Wah Chang Albany Corporation and Western Zirconium Division of Westinghouse, and was used by Carbomndum Metals Company, Reactive Metals Inc., AMAX Specialty Metals, Toyo Zirconium in Japan, and Pechiney Ugine Kuhlmann in France. 

Produit Chimiques Ugine Kuhlmann 1262, 1299 Prolschuk, G., vgl. Seebach, D. 379, 380... 

Now chemists at the Central Research Laboratories of Produits Chimiques Ugine Kuhlmann (PCUK) at Lyons, France, developed beginning in 1970, under the direction of Dr F. Weiss, a novel continuous process for manufg hydrazine. The process is based on the discovery that ammonia, hydrogen peroxide, and a carbonyl compd, such as methyl ethyl ketone, react in presence of an amide and catalytic quantities of a phosphate to form an azine intermediate. This intermediate hydrolyzes quantitatively to hydrazine and to carbonyl compd which is recycled. The yield is claimed to be better than 75%... 

Polybrominated Biphenyls. Michigan Chemical Corporation, the major producer of PBBs from 1970 to 1976, marketed mixtures of PBBs under the trade name FireMaster (e.g., BP-6 and FF-1). Other producers of PBBs in the United States included White Chemical Corporation (Bayonne, New Jersey) and Hexcel Corporation (Sayreville, New Jersey), which both produced technical mixtures of octabromobiphenyl and decabromobiphenyl until 1979. The trade names of some commercial PBB mixtures formerly produced in other countries are Berk Coiporation, Great Britain (e.g., BerkFlam, Flammex), Chemische Fabrik Kalk, Germany (e.g., Bromkal), and Ugine Kuhlmann (now Atofinain France) (e.g., Adine). 

M. C. Demarcq—Produits Chimiqucs Ugine Kuhlmann, Centre de Recherches de Lyon,... 

Materials. Pluronic FI27 was a gift from Pechiney Ugine Kuhlmann and was used as received. Pluronic F127 is an ABA poly(oxyethylene)-poly(oxypropylene)-poly(oxyethylene) block copolymer containing approximately 70% oxyethylene with a nominal molecular weight of 1.15 x 10. ... 

Commercial production of hydrazine from its elements has not been successful. However three processes are available for the commercial production of hydrazine 1) The Raschig Process, 2) The Raschig/Olin Process, 3) The Hoffmann (urea) Process, 4) Bayer Ketazine Process, and 5) the Peroxide process from Produits Chimiques Ugine Kuhlmann (of France). 

Current address Produits Chimiques Ugine Kuhlmann, F-69310 Pierre-Benite, France. 

In the PCUK process (introduced by Produits Chimiques Ugine Kuhlmann), ammonia is oxidized with hydrogen peroxide in the presence of a ketone. A ketazine is formed as in the ketazine process, which is then processed similarly. Ketones with many different substituents, even aldehydes,... 

Extruded structural foams are produced with conventional extruders and a specially designed die with an inner, fixed torpedo located at the center of its opening. The extrudate from this die is hollow. The outer layer of the extrudate cools and solidifies to form solid skin the remaining extrudate expands toward the interior of the profile. The Celuka process, developed by Ugine-Kuhlmann [93], is widely used commercially. 

Products Chimique Ugine Kuhlmann, Chem. Eng. News., 1978. Dec. 11, 24. 

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