Edward A Lambers

RE44175, Apr 23, 2013

Apr 21, 2010

12/764213

Roger Keranen Rains - Richfield OH, US
Ralph Albert Genetti - Copley OH, US
Edward Albert Lambers - Copley OH, US
Antonius Johannes van Hengstum - Deventer, NL

C07C 209/00
C07C 209/36

564423, 564416, 564422

A process for preparing an optionally substituted 4-aminodiphenylamine comprising reacting an optionally substituted aniline and an optionally substituted nitrobenzene in the presence of water and a base while controlling the water content so as to ensure a molar ratio of water to the base charged of not less than about 4:1 at the start of the coupling reaction and not less than about 0. 6:1 at the end of the coupling reaction to produce 4-nitrodiphenylamine and/or 4-nitrosodiphenylamine and/or salts thereof. The coupling reaction is followed by a hydrogenation reaction where the coupling reaction product is hydrogenated in the presence of a hydrogenation catalyst and added water so as to ensure a molar ratio of total water to base of at least about 4:1 at the end of hydrogenation. Aqueous and organic phases are obtained and the optionally substituted 4-aminodiphenylamine recovered from the organic phase.

42582270, Mar 24, 1981

Dec 6, 1979

6/100837

John K. Allen - St. Charles IL
Agnes M. Palka - St. Charles IL
Edward A. Lambers - Somerset NJ

Standard Oil Company (Indiana) - Chicago IL

C07C 120

585469

Short, less than one second, residence time non-catalytic hydropyrolysis is conducted by rapid heating at more than 600. degree. C. per second of a solid mixture of aldehydo-, carboxy-, keto- and carboxy-, and aldehydo- and carboxy- substituted benzene and toluene and such solid also containing cobalt and/or manganese salts of organic acids and organic and/or inorganic bromides obtained from the manufacture of benzene di- and tricarboxylic acids up to a temperature of at least 700. degree. C. Such short residence hydropyrolysis produces attractive amounts of readily recoverable benzene and toluene as well as lower alkanes and alkenes and a solid carbonaceous char which can be burned to provide heat for the hydropyrolysis. The short residence hydropyrolysis is not subject to short activity and frequent periods of off-stream time as are the catalytic pyrolysis conducted at lower temperatures of from 300. degree. up to 500. degree. C.

61405388, Oct 31, 2000

Feb 3, 1999

9/243719

Roger Keranen Rains - Richfield OH
Ralph Albert Genetti - Copley OH
Edward Albert Lambers - Copley OH
Antonius Johannes van Hengstum - Deventer, NL

Flexsys America L.P. - Akron OH

C07C20900

564416

A process for preparing an optionally substituted 4-aminodiphenylamine comprising reacting an optionally substituted aniline and an optionally substituted nitrobenzene in the presence of water and a base while controlling the water content so as to ensure a molar ratio of water to the base charged of not less than about 4:1 at the start of the coupling reaction and not less than about 0. 6:1 at the end of the coupling reaction to produce 4-nitrodiphenylamine and/or 4-nitrosodiphenylamine and/or salts thereof. The coupling reaction is followed by a hydrogenation reaction where the coupling reaction product is hydrogenated in the presence of a hydrogenation catalyst and added water so as to ensure a molar ratio of total water to base of at least about 4:1 at the end of hydrogenation. Aqueous and organic phases are obtained and the optionally substituted 4-aminodiphenylamine recovered from the organic phase.