Ralph D Triplett

US Patent:

20040039181, Feb 26, 2004

Filed:

May 20, 2003

Appl. No.:

10/442012

Inventors:

Roger Rains - Richfield OH, US
Donald Fields - Copley OH, US
Ralph Triplett - Wadsworth OH, US

International Classification:

C09B062/006
C09B062/58

US Classification:

534/588000, 534/590000

Abstract:

A process for producing amino or amido substituted aromatic azo or hydrazo compounds, or aminoaromatic amines, or aminoaromatic amides, or mixtures thereof, comprises the steps of: (a) bringing into reactive contact in a suitable solvent system a nucleophilic compound selected from the group of aniline, substituted aniline derivatives, aliphatic amines, substituted aliphatic amine derivatives, amides and substituted amide derivatives with an azo containing compound; and (b) reacting the nucleophilic compound and the azo containing compound in a confined zone at a suitable time, pressure and temperature.

US Patent:

20040110986, Jun 10, 2004

Filed:

May 23, 2003

Appl. No.:

10/444524

Inventors:

Ralph Triplett - Wadsworth OH, US
Roger Rains - Richfield OH, US

International Classification:

C07C211/54

US Classification:

564/433000

Abstract:

The invention is directed to a method of producing one or more 4-aminodiphenylamine intermediates comprising the steps: a. bringing an aniline or aniline derivative and nitrobenzene into reactive contact; and b. reacting the aniline and nitrobenzene in a confined zone at a suitable time and temperature, in the presence of a mixture comprising a strong organic base, or equivalent thereof, and an oxidant comprising hydrogen peroxide in an amount of from about 0.01 to about 0.60 moles of hydrogen peroxide to moles of nitrobenzene.

US Patent:

20070191641, Aug 16, 2007

Filed:

Dec 15, 2006

Appl. No.:

11/639945

Inventors:

Ralph Triplett - Wadsworth OH, US
Roger Rains - Richfield OH, US

International Classification:

C07C 209/68

US Classification:

564435000

Abstract:

The invention is directed to a method of producing one or more 4-aminodiphenylamine intermediates comprising the steps: a. bringing an aniline or aniline derivative and nitrobenzene into reactive contact; and b. reacting the aniline and nitrobenzene in a confined zone at a suitable time and temperature, in the presence of a mixture comprising a strong organic base, or equivalent thereof, and an oxidant comprising hydrogen peroxide in an amount of from about 0.01 to about 0.60 moles of hydrogen peroxide to moles of nitrobenzene.

US Patent:

20030088127, May 8, 2003

Filed:

May 10, 2002

Appl. No.:

10/143478

Inventors:

Ralph Triplett - Wadsworth OH, US
Roger Rains - Richfield OH, US

International Classification:

C 07C 2 9/60

US Classification:

564/431000

Abstract:

The invention is directed to a method of producing one or more 4-aminodiphenylamine intermediates comprising the steps of bringing an aniline or aniline derivative and nitrobenzene into reactive contact and reacting the aniline and nitrobenzene in a confined zone at a suitable time and temperature, in the presence of a mixture comprising an inorganic salt or metal organic salt having a cation that would be a suitable cation of a strong inorganic base, an oxidant and an organic base, the mixture not including a reaction product of betaine and a strong inorganic base.