Patents Represented by Law Firm Neilds, Lemack & Dingman
  • Preparation of alkali metal acyl amino acids
    Patent number: 5710295
    Abstract: A process of preparing alkali metal N-acyl amino acids, especially sodium N-acyl sarcosinates. The process of the invention eliminates the use of phosphorus trichloride or thionyl chloride and carboxylic acid chlorides. The process involves reacting the alkali metal N-acyl amino acid directly with a fatty acid at elevated temperatures with constant removal of water generated in the reaction.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: January 20, 1998
    Assignee: Hampshire Chemical Corp.
    Inventors: Richard P. Woodbury, Roger R. Gaudette, F. David Wood