Patents by Inventor William K. Langdon

William K. Langdon 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).

  • Multi-block polyacetal copolymer surfactants
    Patent number: 3931337
    Abstract: Novel polyacetal compounds which are useful as surfactants are prepared by a transacetalization reaction. Polyoxyalkylene polymers are acetal terminated by reaction with alkyl vinyl ether compounds. These blocks are then subjected to a transacetalization reaction resulting in polyacetal compounds.
    Type: Grant
    Filed: August 19, 1974
    Date of Patent: January 6, 1976
    Assignee: BASF Wyandotte Corporation
    Inventor: William K. Langdon
  • Hydroxyalkylamino glycosides and process of preparation
    Patent number: 3931148
    Abstract: Glycosides are prepared by reacting a monosaccharide or a compound hydrolyzable to a monosaccharide with 3-chloro-1,2-propanediol in the presence of an acid catalyst producing a 2-hydroxy-3-chloropropyl glycoside. The glycoside is then reacted with a base and an amine having at least one alkyl group that contains 8 to 30 carbon atoms to produce an alkali soluble surfactant.
    Type: Grant
    Filed: December 23, 1974
    Date of Patent: January 6, 1976
    Assignee: BASF Wyandotte Corporation
    Inventor: William K. Langdon