TRANSFER PROCESS FOR ADHESIVE MICROSPHERES
    90.
    发明授权
    TRANSFER PROCESS FOR ADHESIVE MICROSPHERES 失效
    过户手续及胶微球。

    公开(公告)号:EP0413809B1

    公开(公告)日:1995-08-16

    申请号:EP90904983.5

    申请日:1990-03-05

    IPC分类号: B01D21/26

    CPC分类号: C08F2/08 C08F2/20 C09J7/385

    摘要: Inherently tacky infusible pressure-sensitive adhesive microspheres prepared by polymerizing at least one monomer which when polymerized will form a pressure-sensitive adhesive having a glass transition temperature less than about -20 DEG C. in a medium in which the monomer is substantially insoluble and in the presence of a surfactant and a suspension stabilizer which are soluble in the organic medium and substantially insoluble in the monomer under conditions of shear sufficient to form suspended particles of a size less than 200 microns. The formed microspheres are transferred to a volatile organic medium and separated from the medium in which they were formed by a centrifugal separator at a force of at least 2,000 times the force of gravity.