Patents Assigned to Wella Aktiengesellschaft Wella AG
  • Aqueous pearlescing concentrates
    Patent number: 6210659
    Abstract: A pearlescent concentrate containing: (a) from 30 to 80% by weight of an alkyl ether sulfatef; (b) from 5 to 20% by weight of a surfactant selected from the group consisting of a betaine, an alkyl and/or alkenyl oligoglycoside, and mixtures thereof; and (c) from 1 to 10% by weight of an (oligo)ethylene glycol mono- and/or difatty acid ester, all weights being based on the total weight of the composition, and wherein the concentrate is polyol-free.
    Type: Grant
    Filed: May 12, 1999
    Date of Patent: April 3, 2001
    Assignees: Henkel Kommanditgesellschaft auf Aktien, Wella Aktiengesellschaft Wella AG
    Inventors: Josef Wilhelm, Rudolf Bimczok, Werner Kohl, Achim Ansmann, Rolf Kawa