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    NANOPARTICLE-COATED ELASTOMERIC PARTICULATES AND SURFACTANT-PROMOTED METHODS FOR PRODUCTION AND USE THEREOF
    1.
    发明公开
    NANOPARTICLE-COATED ELASTOMERIC PARTICULATES AND SURFACTANT-PROMOTED METHODS FOR PRODUCTION AND USE THEREOF 审中-公开

    公开(公告)号：EP3789443A1

    公开(公告)日：2021-03-10

    申请号：EP20193755.4

    申请日：2020-08-31

    申请人： Xerox Corporation

    发明人： CLARIDGE, Robert ,  RESETCO, Cristina ,  SRISKANDHA, Shivanthi Easwari ,  FARRUGIA, Valerie M. ,  ZWARTZ, Edward G.

    IPC分类号： C08J7/06 ,  C08J3/12 ,  C08J3/21 ,  B33Y70/00 ,  C08K3/36

    摘要： Melt emulsification may be employed to form elastomeric particulates in a narrow size range when nanoparticles and a sulfonate surfactant are included as emulsion stabilizers. Such processes may comprise combining a polyurethane polymer, a sulfonate surfactant, and nanoparticles with a carrier fluid at a heating temperature at or above a melting point or softening temperature of the polyurethane polymer, applying sufficient shear to disperse the polyurethane polymer as liquefied droplets in the presence of the nanoparticles in the carrier fluid at the heating temperature, cooling the carrier fluid at least until elastomeric particulates in a solidified state form, and separating the elastomeric particulates from the carrier fluid. The polyurethane polymer defines a core and an outer surface of the elastomeric particulates, and the nanoparticles are associated with the outer surface. The elastomeric particulates may have a span of about 0.9 or less.