Degussa company

Researchers at BASF have shown that microreactors can be utilized that give access to operating conditions that cannot be realized by means of macroscopic equipment. They succeeded in improving yield and selectivity in a highly exothermal two-phase reaction in connection with the synthesis of a vitamin precursor. At Degussa company, a microreactor test facility for proprietary reactions is under construction. The major focus in this context is the implementation of microreaction devices as powerful tools for process development and, in particular, for the evaluation of new reaction pathways. 

A Degussa Company, Paul-Baumannstrasse 1,45772 Marl, Germany (Tel 49 2365 49 5181 FAX 49 2365 49 6740 E-mail g.heinze oxeno.de Internet www.oxeno.de)... 

Most of the commercial synthesis of 1,3-PD is from acrolein by Degussa (now owned by DuPont) and from ethylene oxide by Shell [13]. The Degussa Company starts from acrolein and the process consists of the following three steps (Scheme 4.1). The first step is the oxidation of propylene to acrolein, the second is the addition of water to produce 3-hydroxypropionaldehyde, and the third is the catalytic hydrogenation of 3-hydroxypropionaldehyde to 1,3-PD. The selectivity of water addition to acrolein is only around 70-80% when zeolites or ion exchange resins are used. Recently, Tsunoda and Nomura [14] reported that a siUcoaluminophosphate-based molecular sieve afforded a selectivity of 96% when the reaction was conducted in aqueous solution at 60 C. 

At the time that this plant was operating, the extreme toxicity of beryllium compounds was not fuUy appreciated. Eight deaths were caused at the Degussa Company which could be directly attributed to beryllium compounds, two of them at the sulphate extraction stage. s... 

Figure 2.39 Scanning electron micrograph of flame-synthesized Si02. (Courtesy of Degussa Company.)...

The world s largest producers are Perstorp AB (Sweden, United States, Italy), Hoechst Celanese Corporation (United States, Canada), Degussa (Germany), and Hercules (United States) with estimated 1989 plant capacities of 65,000, 59,000, 30,000, and 22,000 t/yr, respectively. Worldwide capacity for pentaerythritol production was 316,000 t in 1989, about half of which was from the big four companies. Most of the remainder was produced in Asia (Japan, China, India, Korea, and Taiwan), Europe (Italy, Spain), or South America (Brazil, Chile). The estimated rate of production for 1989 was about 253,000 t or about 80% of nameplate capacity. 

The shrinkage in demand has resulted in a restmcturing of the carbon black-industry. Several of the principal multinational oil companies have left the business including Ashland, Cities Service Co., Phillips, and Conoco. Some plants have changed ownership. In the United States this has increased the production capacities of Degussa, Sid Richardson, and Huber. Today s U.S. industry consists of six principal producers. Rated capacities of the six U.S. manufacturers is shown in Table 13. Cabot Corp. and Columbian Chemicals are the leading producers, followed by Degussa, Sid Richardson, J. M. Huber Corp., and Witco. A survey of the future markets and present stmcture of the carbon black industry has been presented (1). 

The first commercially available acetal resin was marketed by Du Pont in 1959 under the trade name Delrin after the equivalent of ten million pounds had been spent in research or polymers of formaldehyde. The Du Pont monopoly was unusually short lived as Celcon, as acetal copolymer produced by the Celanese Corporation, became available in small quantities in 1960. This material became commercially available in 1962 and later in the same year Farbwerke Hoechst combined with Celanese to produce similar products in Germany (Hostaform). In 1963 Celanese also combined with the Dainippon Celluloid Company of Osaka, Japan and Imperial Chemical Industries to produce acetal copolymers in Japan and Britain respectively under the trade names Duracon and Alkon (later changed to Kematal). In the early 1970s Ultraform GmbH (a joint venture of BASF and Degussa) introduced a copolymer under the name Ultraform and the Japanese company Asahi Chemical a homopolymer under the name Tenal. 

Cyanides and Chemicals Company (India) Degussa-Huls (Geiinany)... 

Parent Company Degussa Group (Germany), Performance Chemicals Division... 

Degussa AG (2003) Vestenamer - the rubber with unique properties. Company publication, available viahttp //www.degussa-hpp.de/e/index.html... 

The support we received from our sponsors was much appreciated and greatly contributed to the success of the 22nd conference. On behalf of ORCS, 1 specifically thank these organizations Avantium, BASF Catalysts LLC, Eli Lilly and Company, Evonik Degussa Corporation, W.R. Grace (Davison Catalysts), Parr Instrument, Air Products, Amgen, Eastman, Umicore, Bristol-Myers Squibb, DuPont, Headwaters, HEt Lummus Technology, OMG, Seton Hall University (c/c Dr. John Sowa) and Slid Chemie. 

Degussa Also called BMA. The process by which this large German company is best known is its version of the Andrussov process for making hydrogen cyanide. Methane and ammonia are reacted in the absence of air, at approximately 1,400°C, over a platinium metal catalyst ... 

Large, older companies reacted quickly. As late as the middle of 2008, one could read on Degussa (now Evonik) web pages dedicated to its Dynasylan coatings launched in 2007 that ... 

Seshu Dharmavaram of E. I. du Pont de Nemours and Company, Inc. Dennis Waibel of Degussa Corporation Jan Windhorst of NOVA Chemicals Gary York of Rhodia Inc. 

Facilities producing sodium cyanide and their annual capacity (in millions of pounds) include Cyanco Co., Winnemucca, Nevada (28) Degussa Corporation, Theodore, Alabama (60) Du Pont Chemical Company, Memphis, Tennessee (250) and Texas City, Texas (100) and FMC Corporation, Green River, Wyoming (60) (SRI 1995). 

L- or D-Serine are available from chemical suppliers such as Aldrich Chemical Company, Inc., Fisher Scientific Company, Fluka Chemical Corp., Acros Organics. In Europe, they may be obtained in bulk quantities from Degussa (Germany) and Rexim (France). 

S)-Proline was used as commercially available. The submitters obtained (S)-proline from Degussa AG (D-Hanau), while the checkers used material from Aldrich Chemical Company, Inc. 

The authors thank the companies BASF, BAYER, DEGUSSA, WACKER and the former HOECHST AG who made available to us revised and new examples from industrial laboratories. We also thank the Chemistry Editorial and Production Department of Springer-Verlag for an excellent cooperation. 

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