Patents Assigned to Penick Corporation
  • Dehydration of 2,5-dimethyl-2,5-hexanediol
    Patent number: 4507518
    Abstract: This invention relates to an improved process for the dehydration of 2,5-dimethyl-2,5-hexanediol to give good yields of 2,5-dimethyl-2,4-hexadiene with a minimum of by-products. This is accomplished by heating 2,5-dimethyl-2,5-hexanediol with a montmorillonite clay catalyst, preferably in the presence of a lower aliphatic alcohol.
    Type: Grant
    Filed: December 14, 1983
    Date of Patent: March 26, 1985
    Assignee: Penick Corporation
    Inventors: David V. Petrocine, Ronald Harmetz
  • Borate reduction of nitrophenols
    Patent number: 4264526
    Abstract: A process for the direct production of aminophenol and N-acetyl-p-aminophenol from nitrophenols using a borate ion additive during hydrogenation to eliminate undesirable by-products and color formation.
    Type: Grant
    Filed: July 2, 1979
    Date of Patent: April 28, 1981
    Assignee: Penick Corporation
    Inventors: Donald C. Ruopp, Mark A. Thorn
  • Stepwise reduction of p-nitrophenol
    Patent number: 4264525
    Abstract: A stepwise reduction and acetylation process for the production of pure N-acetyl-p-aminophenol (APAP) from p-nitrophenol in an aqueous system that avoids the need for strong acids or excess acetic anhydride.
    Type: Grant
    Filed: July 2, 1979
    Date of Patent: April 28, 1981
    Assignee: Penick Corporation
    Inventor: John Huber, Jr.