公开(公告)号：US20210308752A1

公开(公告)日：2021-10-07

申请号：US17347813

申请日：2021-06-15

申请人： XEROX CORPORATION

发明人： Guiqin Song ,  Sarah J. Vella ,  Barkev Keoshkerian

IPC分类号： B22F1/00 ,  B22F9/24 ,  C09D11/52 ,  C09D11/38

摘要： Provided herein is a composition for eutectic metal alloy nanoparticles having an average particle size ranging from about 0.5 nanometers to less than about 5000 nanometers and at least one organoamine stabilizer. Also provided herein is a process for preparing eutectic metal alloy nanoparticles comprising mixing at least one organic polar solvent, at least one organoamine stabilizer, and a eutectic metal alloy to create a mixture; sonicating the mixture at a temperature above the melting point of the eutectic metal alloy; and collecting a composition comprising a plurality of eutectic metal alloy nanoparticles having an average particle size ranging from about 0.5 nanometers to less than about 5000 nanometers. Further disclosed herein are hybrid conductive ink compositions comprising a component comprising a plurality of metal nanoparticles and a component comprising a plurality of eutectic metal alloy nanoparticles.

公开(公告)号：US10814659B2

公开(公告)日：2020-10-27

申请号：US16021367

申请日：2018-06-28

申请人： Xerox Corporation

发明人： Barkev Keoshkerian ,  Adela Goredema ,  Sarah J. Vella ,  Biby Esther Abraham ,  Michelle N Chretien

IPC分类号： B33Y10/00 ,  B41M3/00 ,  B41M5/00 ,  B33Y30/00 ,  B33Y70/00 ,  B28B1/00

摘要： Methods for printing a conductive object are provided which may comprise dispensing one of a first ink composition and a second ink composition towards a substrate surface to form a deposition region on the substrate surface or on a previously printed object on the substrate surface, wherein the first ink composition comprises an aqueous solution of a metal compound and the second ink composition comprises an aqueous solution of a stable free radical; dispensing the other of the first and second ink compositions in the deposition region to mix the first and second ink compositions and induce chemical reduction of the metal compound by the stable free radical and precipitation of the metal of the metal compound; and removing solvent from the deposition region, thereby forming a conductive object comprising the precipitated metal.

公开(公告)号：US10717824B2

公开(公告)日：2020-07-21

申请号：US16232688

申请日：2018-12-26

申请人： PALO ALTO RESEARCH CENTER INCORPORATED ,  XEROX CORPORATION

发明人： Mahati Chintapalli ,  Barkev Keoshkerian ,  Gabriel Iftime ,  Quentin Van Overmeere

IPC分类号： C08J9/28 ,  C08G77/442 ,  C01B33/158 ,  C08F2/48 ,  C08L33/08 ,  C08J11/22 ,  C08J3/24 ,  C08K5/37 ,  C08L33/10 ,  C08F2/38 ,  C08J3/075 ,  C08F220/14 ,  C08F220/18 ,  C08F212/36 ,  C08F222/10

摘要： A method of producing a polymer aerogel can include dissolving gel precursors consisting of radical polymerizable monomers and crosslinkers, radical initiators, and a chain transfer agent (CTA) in a reaction solvent, wherein the monomers and cross-linkers produce stiff homopolymers; placing the gel precursors into a substrate; polymerizing the gel on the substrate; optionally removing the wet gel from the mold; optionally performing at least one solvent exchange on the gel; and removing the reaction solvent.

公开(公告)号：US10685763B2

公开(公告)日：2020-06-16

申请号：US15000588

申请日：2016-01-19

申请人： XEROX CORPORATION

发明人： Rachel Prestayko ,  Sarah J. Vella ,  Carolyn Moorlag ,  Barkev Keoshkerian

IPC分类号： H01B1/24 ,  B29C64/118 ,  C08K3/04 ,  B29C70/88 ,  B33Y10/00 ,  B33Y70/00 ,  B29K101/12 ,  B29K105/16 ,  B29K507/04

摘要： A conductive polymer composite is disclosed. The composite comprises a thermoplastic polymer; carbon nanotubes in an amount ranging from 2% to about 40% by weight, relative to the total weight of the conductive polymer composite; and a plurality of graphitic particles in an amount ranging from about 2% to about 50% by weight, relative to the total weight of the conductive polymer composite.

公开(公告)号：US10649355B2

公开(公告)日：2020-05-12

申请号：US15215226

申请日：2016-07-20

申请人： XEROX CORPORATION

发明人： Barkev Keoshkerian ,  Rachel Prestayko ,  Kimberly D. Nosella ,  Valerie M. Farrugia

IPC分类号： G03G9/08 ,  C08K3/04 ,  C08J3/16 ,  G03G9/09 ,  D01F1/10 ,  B29C70/58 ,  B33Y10/00 ,  B33Y70/00 ,  D01F1/09 ,  B29K7/00 ,  B29K507/04 ,  B29C70/88 ,  B29C64/106 ,  B29C64/118

摘要： A method of making a composite feed material for fused deposition modeling (FDM) is disclosed. The method comprises providing composite particles made by a process of emulsion aggregation, the composite particles comprising at least one thermoplastic polymer and at least one carbon particle material. A composite feed material is formed for fused deposition modeling from the composite particles. The composite feed material is in a form selected from a filament and a paste.

公开(公告)号：US20190135984A1

公开(公告)日：2019-05-09

申请号：US16232688

申请日：2018-12-26

申请人： PALO ALTO RESEARCH CENTER INCORPORATED ,  XEROX CORPORATION

发明人： Mahati Chintapalli ,  Barkev Keoshkerian ,  Gabriel Iftime ,  Quentin Van Overmeere

IPC分类号： C08G77/442 ,  C08L33/10 ,  C08K5/37 ,  C08J3/24 ,  C01B33/158 ,  C08J9/28 ,  C08L33/08 ,  C08F2/48 ,  C08J11/22

摘要： A method of producing a polymer aerogel can include dissolving gel precursors consisting of radical polymerizable monomers and crosslinkers, radical initiators, and a chain transfer agent (CTA) in a reaction solvent, wherein the monomers and cross-linkers produce stiff homopolymers; placing the gel precursors into a substrate; polymerizing the gel on the substrate; optionally removing the wet gel from the mold; optionally performing at least one solvent exchange on the gel; and removing the reaction solvent.

公开(公告)号：US20190062582A1

公开(公告)日：2019-02-28

申请号：US15692201

申请日：2017-08-31

申请人： Xerox Corporation

发明人： Barkev Keoshkerian ,  Michelle N. Chrétien ,  Adela Goredema ,  Chad Smithson ,  Sarah J. Vella

IPC分类号： C09D11/52 ,  C09D11/38 ,  C09D11/03 ,  C23C18/08 ,  C23C18/14 ,  C07F1/10 ,  C07F1/00 ,  H01B1/22 ,  H01L51/00

摘要： An ink composition including a metal salt amine complex; wherein the metal salt amine complex is formed from a metal salt and an amine; a compound selected from the group consisting of a stable free radical, a photoacid generator, and a thermal acid generator; and an optional solvent. A process including forming a metal salt amine complex; adding a compound selected from the group consisting of a stable free radical, a photoacid generator, and a thermal acid generator to the metal salt amine complex to form an ink. A process including providing an ink composition comprising a metal salt amine complex, wherein the metal salt amine complex is formed from a metal salt and an amine; a compound selected from the group consisting of a stable free radical, a photoacid generator, and a thermal acid generator; and an optional solvent; depositing the ink composition onto a substrate to form deposited features; and treating the deposited features on the substrate to form conductive features on the substrate.

公开(公告)号：US10186344B2

公开(公告)日：2019-01-22

申请号：US15000554

申请日：2016-01-19

申请人： XEROX CORPORATION

发明人： Rachel Prestayko ,  Sarah J. Vella ,  Carolyn Moorlag ,  Barkev Keoshkerian

IPC分类号： H01B1/02 ,  H01B1/24 ,  B29C64/106 ,  B29C64/40 ,  B33Y10/00 ,  B33Y70/00 ,  B29K67/00 ,  B29K105/16 ,  B29K507/04

摘要： A conductive polymer composite is disclosed. The composite comprises a thermoplastic polymer; carbon nanotubes; at least one electron donor molecule and at least one electron acceptor molecule. A method of three-dimensional printing using the conductive polymer composite and a conductive polymer composite filament are also disclosed.

公开(公告)号：US20180022042A1

公开(公告)日：2018-01-25

申请号：US15215226

申请日：2016-07-20

申请人： XEROX CORPORATION

发明人： Barkev Keoshkerian ,  Rachel Prestayko ,  Kimberly D. Nosella ,  Valerie M. Farrugia

IPC分类号： B29C67/00

CPC分类号： G03G9/0804 ,  B29C64/106 ,  B29C64/118 ,  B29C70/58 ,  B29C70/882 ,  B29K2007/00 ,  B29K2507/04 ,  B33Y10/00 ,  B33Y70/00 ,  C08J3/16 ,  C08K3/041 ,  D01F1/09 ,  D01F1/10 ,  G03G9/0904

摘要： A method of making a composite feed material for fused deposition modeling (FDM) is disclosed. The method comprises providing composite particles made by a process of emulsion aggregation, the composite particles comprising at least one thermoplastic polymer and at least one carbon particle material. A composite feed material is formed for fused deposition modeling from the composite particles. The composite feed material is in a form selected from a filament and a paste.

公开(公告)号：US20170298194A1

公开(公告)日：2017-10-19

申请号：US15098280

申请日：2016-04-13

申请人： XEROX CORPORATION

发明人： Valerie M. Farrugia ,  Barkev Keoshkerian ,  Michelle N. Chrétien

IPC分类号： C08J3/12 ,  A01N25/28 ,  A01N59/16 ,  C08G63/688 ,  B33Y80/00 ,  B33Y10/00 ,  B33Y70/00

CPC分类号： C08J3/126 ,  A01N25/28 ,  A01N59/16 ,  B29C64/153 ,  B33Y10/00 ,  B33Y70/00 ,  B33Y80/00 ,  C08G63/6886 ,  C08J3/16 ,  C08J3/215 ,  C08J2300/10 ,  C08J2367/02 ,  C08J2425/04 ,  C08J2425/06 ,  C08K3/08 ,  C08K2003/0806 ,  C08K2201/011 ,  C08L25/06 ,  C08L67/00

摘要： A composite powder includes a core particle comprising a sulfonated polyester matrix and a plurality of silver nanoparticles dispersed within the matrix, and a shell polymer disposed about the core particle, and methods of making thereof. Various articles can be manufactured from such composite powders.