Robert S Landon, 61Livingston, TX

5302767, Apr 12, 1994

Mar 26, 1993

8/037935

Richard A. Galley - Belle Mead NJ
Robert S. Landon - Highland Park NJ
Kenneth C. Senior - S. Somerville NJ

Union Carbide Chemicals & Plastics Technology Corporation - Danbury CT

C07C 2124
C07C 272
C07C 2518

570184

Processes are disclosed for preparing [2. 2] paracyclophane and derivatives thereof by conducting the Hofmann elimination of p-methylbenzyltrimethylammonium hydroxide, or derivatives thereof, in the presence of an effective amount of oxygen to inhibit the formation of by-product polymers. The oxygen can be introduced, for example, by a purge gas stream containing molecular oxygen. Products produced by the processes are also disclosed.

2015016, Jun 18, 2015

Jan 21, 2013

14/371184

- Midland MI, US
John M. Kenney - Scott Depot WV, US
Robert S. Landon - Livingston TX, US
Jeffrey G. Hippler - South Charleston WV, US

DOW GLOBAL TECHNOLOGIES LLC - Midland MI

C08G 65/10

A process for polymerizing an epoxide monomer, preferably ethylene oxide, comprising carrying out the process in the presence of a catalytically active amount of a catalyst obtainable by a preparation process comprising admixing at least one alkaline earth metal, liquid ammonia, an alkylene oxide, which is optionally substituted by aromatic radicals, and an organic nitrile having at least one acidic hydrogen atom to prepare a slurry of modified alkaline earth hexammine in liquid ammonia; continuously transferring the slurry of modified alkaline earth hexammine in liquid ammonia into a stripper vessel and continuously evaporating ammonia, thereby accumulating the modified catalyst in the stripper vessel; and upon complete transfer of the slurry of modified alkaline earth hexammine into the stripper vessel, aging the modified catalyst to obtain the final polymerization catalyst; and a polymer obtainable by this process.