Patents Represented by Attorney Stephans P. Williams
  • Patent number: 6074632
    Abstract: The present invention relates to methods of making enhanced efficacy antiperspirant salts and particularly stabilized aqueous polyhydric alcohol solutions of such salts. One such method involves stabilizing an aqueous solution of an enhanced efficacy antiperspirant salt by adding an effective amount of a polyhydric alcohol having from 3 to 6 carbon atoms and from 3 to 6 hydroxyl groups. A second disclosed method involves preparing an enhanced efficacy aluminum antiperspirant salt by heating an aqueous solution of an aluminum antiperspirant salt in the presence of a polyhydric alcohol having from 3 to 6 carbon atoms and from 3 to 6 hydroxyl groups at a temperature of at least 50.degree. C. for a time sufficient to convert the salt to an enhanced salt.
    Type: Grant
    Filed: August 6, 1999
    Date of Patent: June 13, 2000
    Assignee: The Gillette Company
    Inventor: Yan-Fei Shen