With Preservative Or Stabilizer Patents (Class 558/21)
  • Detergent production
    Patent number: 5466851
    Abstract: A method of preparing PAS acid is disclosed which involves sulphating an alcohol feedstock and incorporating in the reaction product, a stabilizing agent which comprises an (hydroxy) alkylene oxide residue.
    Type: Grant
    Filed: December 14, 1993
    Date of Patent: November 14, 1995
    Assignee: Lever Brothers Company, Division of Conopco, Inc.
    Inventors: Amanda J. Adams, Philip S. Jackson, Howard N. Moulden, David W. Roberts, Keith Watkin
  • Fluorinated carboxylic acid esters of phosphono- and phosphinocarboxylic acids containing acrylate and/or methacrylate groups
    Patent number: 5414102
    Abstract: The present invention relates to fluorinated carboxylic acid esters of phosphonocarboxylic acids containing acrylate and/or methacrylate groups, their use as waterproofing or oil-repellency agents, and a method for their preparation.
    Type: Grant
    Filed: December 27, 1993
    Date of Patent: May 9, 1995
    Assignee: Bayer Aktiengesellschaft
    Inventors: Klaus Pohmer, Rainer Weber, Hans-Dieter Block, Hans-Heinrich Moretto
  • Process for the production of alkyl sulfate pastes having improved flow properties
    Patent number: 5304669
    Abstract: The alkylsulphate pastes disclosed can be prepared by sulphonating mixtures containing a)50-90% by weight of at least one aliphatic primary alcohol with 6-22 carbon atoms and b)1-50% by weight of at least one unsaturated fatty acid glyceride ester derived from fatty acids having 16-22 carbon atoms and having one, two or three double bonds, with gaseous sulphur trioxide and subsequently neutralizing and hydrolysing the reaction products with aqueous bases in such a way that pastes with solids contents of 30-80% by weight are obtained.
    Type: Grant
    Filed: April 16, 1993
    Date of Patent: April 19, 1994
    Assignee: Henkel Kommanditgesellschaft auf Aktien
    Inventors: Frank Wangemann, Rainer Hofmann, Bernd Fabry, Fritz Lange