Patents Represented by Attorney D. P. Neaveill
  • Patent number: 4994322
    Abstract: A repositionable pressure-sensitive adhesive comprising from about 70% to about 99% hollow, polymeric, acrylate, inherently tacky, infusible, solvent-insoluble, solvent-dispersible, elastomeric microspheres comprising at least one alkyl acrylate or alkyl methacrylate ester, a majority of the microspheres having one or more interior voids having a diameter of at least about 10% of the diameter of the microsphere, and correspondingly, from about 30% to about 1% of a binder copolymer comprising an elastomeric polymeric backbone having pendant therefrom high Tg polymeric moieties.
    Type: Grant
    Filed: September 18, 1989
    Date of Patent: February 19, 1991
    Assignee: Minnesota Mining and Manufacturing
    Inventors: Joaquin Delgado, Roger W. Leinen, Spencer F. Silver