Patents by Inventor ALAN B. TRUE

ALAN B. TRUE 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).

  • Regeneration of clay catalysts for alkylation of aromatic rings
    Patent number: 9744531
    Abstract: Catalysts, in particular clay catalysts, use in alkylation reaction of aromatic compounds, e.g., aromatic amines, that have lost activity during use, are regenerated by contacting the used catalyst with a mixture of a minor amount of an acid, in a mixture with water and an organic solvent. The regeneration process is readily incorporated into an alkylation process for aromatic amines.
    Type: Grant
    Filed: January 14, 2016
    Date of Patent: August 29, 2017
    Assignee: LANXESS Solutions US Inc.
    Inventor: Alan B. True
  • Fixed bed process for clay catalyzed alkylation of aromatic amines
    Patent number: 9617201
    Abstract: Aromatic amines, for example, diarylamines such as diphenylamine, dinaphthylamine, N-phenyl-N-naphthyl amine etc., are alkylated by passing a mixture of the amine and an olefin, though a clay catalyst in a fixed bed reactor system. The process is conveniently run as a continued process, produces an alkylated aromatic amine in excellent purity and provides efficiencies in material and energy use.
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: April 11, 2017
    Assignee: CHEMTURA CORPORATION
    Inventors: Mitchel Cohn, Ronald Abbott, Alan B. True, Huiyuan Chen
  • REGENERATION OF CLAY CATALYSTS FOR ALKYLATION OF AROMATIC RINGS
    Publication number: 20160256864
    Abstract: Catalysts, in particular clay catalysts, use in alkylation reaction of aromatic compounds, e.g., aromatic amines, that have lost activity during use, are regenerated by contacting the used catalyst with a mixture of a minor amount of an acid, in a mixture with water and an organic solvent. The regeneration process is readily incorporated into an alkylation process for aromatic amines.
    Type: Application
    Filed: January 14, 2016
    Publication date: September 8, 2016
    Inventor: Alan B. True
  • FIXED BED PROCESS FOR CLAY CATALYZED ALKYLATION OF AROMATIC AMINES
    Publication number: 20150105588
    Abstract: Aromatic amines, for example, diarylamines such as diphenylamine, dinaphthylamine, N-phenyl-N-naphthyl amine etc., are alkylated by passing a mixture of the amine and an olefin, though a clay catalyst in a fixed bed reactor system. The process is conveniently run as a continued process, produces an alkylated aromatic amine in excellent purity and provides efficiencies in material and energy use.
    Type: Application
    Filed: October 8, 2014
    Publication date: April 16, 2015
    Applicant: CHEMTURA CORPORATION
    Inventors: MITCHEL COHN, RONALD ABBOTT, ALAN B. TRUE, HUIYUAN CHEN