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22 条记录 (耗时 0.015 秒)

    NANOPARTICLE-COATED ELASTOMERIC PARTICULATES AND SURFACTANT-PROMOTED METHODS FOR PRODUCTION AND USE THEREOF
    11.
    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.

    FUNCTIONALIZED SILICONE MATERIALS FOR THREE-DIMENSIONAL PRINTING
    12.
    发明公开
    FUNCTIONALIZED SILICONE MATERIALS FOR THREE-DIMENSIONAL PRINTING 审中-公开

    公开(公告)号：EP3715120A1

    公开(公告)日：2020-09-30

    申请号：EP20164048.9

    申请日：2020-03-18

    申请人： Xerox Corporation

    发明人： RESETCO, Cristina ,  FARRUGIA, Valerie M.

    IPC分类号： B33Y70/00 ,  C08L83/06 ,  C08L83/08

    摘要： A material for three-dimensional printing including at least one of a functionalized silicone polymer, a functionalized silica particle, or a combination thereof; wherein the functionalized silicone polymer is functionalized with a member of the group consisting of a carboxylic acid, an amine, and combinations thereof; and wherein the functionalized silica particle is functionalized with a member of the group consisting of a carboxylic acid, an amine, and combinations thereof. A process for preparing the three-dimensional printing material. A process for three-dimensional printing use of the material.

    PARTICLES COMPRISING POLYAMIDES WITH PENDENT PIGMENTS AND RELATED METHODS
    15.
    发明公开
    PARTICLES COMPRISING POLYAMIDES WITH PENDENT PIGMENTS AND RELATED METHODS 审中-公开

    公开(公告)号：EP3789435A2

    公开(公告)日：2021-03-10

    申请号：EP20194476.6

    申请日：2020-09-03

    申请人： Xerox Corporation

    发明人： FARRUGIA, Valerie M. ,  RESETCO, Cristina ,  HAWKINS, Michael S. ,  SRISKANDHA, Shivanthi Easwari ,  CLARIDGE, Robert ,  MOORLAG, Carolyn Patricia ,  MOFFAT, Karen A.

    IPC分类号： C08J3/12 ,  B29C64/153 ,  C08J3/20 ,  C08J3/215

    摘要： A nonlimiting example method of forming polyamide polymer particles having pigments therein may comprising: mixing a mixture comprising a polyamide having a pigment pendent from a backbone of the polyamide (PP-polyamide), a carrier fluid that is immiscible with the PP-polyamide, and optionally an emulsion stabilizer at a temperature greater than a melting point or softening temperature of the PP-polyamide and at a shear rate sufficiently high to disperse the PP-polyamide in the carrier fluid; and cooling the mixture to below the melting point or softening temperature of the PP-polyamide to form solidified particles comprising the PP-polyamide and, when present, the emulsion stabilizer associated with an outer surface of the solidified particles. Said solidified particles may be used in additive manufacturing to make a variety of objects like containers, toys, furniture parts and decorative home goods, plastic gears, automotive parts, medical items, and the like.

    COLOR CHANGING INK JET INK WITH TUNABLE TRANSITION STIMULI
    16.
    发明公开
    COLOR CHANGING INK JET INK WITH TUNABLE TRANSITION STIMULI 审中-公开

    公开(公告)号：EP3670616A1

    公开(公告)日：2020-06-24

    申请号：EP19217198.1

    申请日：2019-12-17

    申请人： Xerox Corporation

    发明人： RESETCO, Cristina

    IPC分类号： C09D11/101 ,  C09D11/106 ,  C09D11/38 ,  C09D11/50

    摘要： A composition including a molecule comprising (1) a diacetylene moiety or diacetylene precursor; and (2) an alkyl additive; water; an optional co-solvent; an optional surfactant; an optional stabilizer; wherein the composition has the characteristic of color change after application of a stimulus. A process for preparing the composition. A process for preparing a product by printing the composition.

    PARTICLES COMPRISING POLYAMIDES WITH PENDENT PIGMENTS AND RELATED METHODS
    17.
    发明公开
    PARTICLES COMPRISING POLYAMIDES WITH PENDENT PIGMENTS AND RELATED METHODS 审中-公开

    公开(公告)号：EP3789435A3

    公开(公告)日：2021-03-31

    申请号：EP20194476.6

    申请日：2020-09-03

    申请人： Xerox Corporation

    发明人： FARRUGIA, Valerie M. ,  RESETCO, Cristina ,  HAWKINS, Michael S. ,  SRISKANDHA, Shivanthi Easwari ,  CLARIDGE, Robert ,  MOORLAG, Carolyn Patricia ,  MOFFAT, Karen A.

    IPC分类号： C08J3/12 ,  B29C64/153 ,  C08J3/20 ,  C08J3/215

    摘要： A nonlimiting example method of forming polyamide polymer particles having pigments therein may comprising: mixing a mixture comprising a polyamide having a pigment pendent from a backbone of the polyamide (PP-polyamide), a carrier fluid that is immiscible with the PP-polyamide, and optionally an emulsion stabilizer at a temperature greater than a melting point or softening temperature of the PP-polyamide and at a shear rate sufficiently high to disperse the PP-polyamide in the carrier fluid; and cooling the mixture to below the melting point or softening temperature of the PP-polyamide to form solidified particles comprising the PP-polyamide and, when present, the emulsion stabilizer associated with an outer surface of the solidified particles. Said solidified particles may be used in additive manufacturing to make a variety of objects like containers, toys, furniture parts and decorative home goods, plastic gears, automotive parts, medical items, and the like.

    NANOPARTICLE-COATED ELASTOMERIC PARTICULATES AND METHODS FOR PRODUCTION AND USE THEREOF
    19.
    发明公开
    NANOPARTICLE-COATED ELASTOMERIC PARTICULATES AND METHODS FOR PRODUCTION AND USE THEREOF 审中-公开

    公开(公告)号：EP3789442A1

    公开(公告)日：2021-03-10

    申请号：EP20193752.1

    申请日：2020-08-31

    申请人： Xerox Corporation

    发明人： RESETCO, Cristina ,  SRISKANDHA, Shivanthi Easwari ,  ZWARTZ, Edward G. ,  HAWKINS, Michael S. ,  FARRUGIA, Valerie M.

    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 are included as an emulsion stabilizer. Such processes may comprise combining a polyurethane polymer and nanoparticles with a carrier fluid at a heating temperature at or above a melting point or a 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. In the elastomeric particulates, 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 D50 of about 1 µm to about 1,000 µm.