Patents by Inventor Russell Edward Malz

Russell Edward Malz has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Preparation of substituted aromatic amines
    Patent number: 5858321
    Abstract: A method for producing aromatic amines such as N-phenyl-p-phenylenediamine is disclosed wherein an amine substituted aromatic such as aniline is oxidized with oxygen or hydrogen peroxide in the presence of trisodium pentacyano ferrate(II) complexes containing various water soluble ligands, such as ammonia, mono alkyl amine, dialkyl amines, and trialkyl amines. The complex is subsequently catalytically reduced by hydrogenation using certain heterogeneous metal catalysts to yield the desired aromatic amine.
    Type: Grant
    Filed: November 12, 1997
    Date of Patent: January 12, 1999
    Assignee: Uniroyal Chemical Company, Inc.
    Inventors: Edward Lockwood Wheeler, Russell Edward Malz, Jr.
  • Preparation of substituted aromatic amines
    Patent number: 5728882
    Abstract: A method for producing aromatic amines such as N-phenyl-p-phenylenediamine is disclosed wherein an amine substituted aromatic such as aniline is oxidized with oxygen or hydrogen peroxide in the presence of trisodium pentacyano ferrate(II) complexes containing various water soluble ligands, such as ammonia, mono alkyl amine, dialkyl amines, and trialkyl amines. The complex is subsequently catalytically reduced by hydrogenation using certain heterogeneous metal catalysts to yield the desired aromatic amine.
    Type: Grant
    Filed: April 4, 1996
    Date of Patent: March 17, 1998
    Assignee: Uniroyal Chemical Company, Inc.
    Inventors: Edward Lockwood Wheeler, Russell Edward Malz, Jr.
  • Process of preparing para substituted phenylamines
    Patent number: 5689007
    Abstract: Processes of preparing para substituted phenylamines, such as, p-phenylenediamines, and particularly, p-aminodiphenylamine. One process involves contacting phenylhydroxylamine with a nucleophilic reagent, such as aniline, in specified proportions and within a specified temperature range, in the absence of oxygen, and in the presence of a homogeneous acid catalyst, such as hydrochloric acid. A second process involves contacting phenylhydroxylamine with a nucleophilic reagent, such as aniline, in the presence of a solid acid catalyst, such as acidic zeolite Y, under reaction conditions.
    Type: Grant
    Filed: October 7, 1996
    Date of Patent: November 18, 1997
    Assignee: Uniroyal Chemical Company, Inc.
    Inventors: Russell Edward Malz, Gerard V. Smith, Mark Peter Ferrandino, Ruozhi Song, Chung-Yuan Lin, Franklin Herbert Barrows