Patents by Inventor Sandra A. Keegan

Sandra A. Keegan 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).

  • Fabric conditioners containing alkyl substituted siloxane
    Patent number: 4933097
    Abstract: A composition comprising (a) a quaternary ammonium halide or an imidazolinium methosulphate (40-98 wt. %) and (b) a non-ionic siloxane of the formula: ##STR1## wherein R.sub.1 =(CH.sub.2).sub.t CH.sub.3R.sub.2 =--H, CH.sub.3 or --(CH.sub.2).sub.z (OCH.sub.2 CHR.sub.3).sub.x (OCH.sub.2 CHR.sub.4).sub.y --OR.sub.5in which each of R.sub.3 and R.sub.4 represent an H or a --CH.sub.3 group such that the resultant polyoxyalkylene derivative is a polymer of ethylene oxide, or, a random and/or block copolymer of ethylene oxide and propylene oxide,R.sub.5 =H, C.sub.1 -C.sub.4 alkyl or an acetoxy group,x=1-50y=0-40z=1-10t=5-21m=5-1000n=1-100q=1-50 andr=1-50.
    Type: Grant
    Filed: November 7, 1988
    Date of Patent: June 12, 1990
    Assignee: BP Chemicals Limited
    Inventor: Sandra A. Keegan