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公开(公告)号：CA2540391A1
公开(公告)日：2006-09-25
申请号：CA2540391
申请日：2006-03-17
Applicant: XEROX CORP
Inventor： ZWARTZ EDWARD G , NOSELLA KIMBERLY D , SACRIPANTE GUERINO G , HAWKINS MICHAEL S , ZHOU KE , MIHAI NICOLETA , DRAPPEL STEPHAN V , FARRUGIA VALERIE M , GERROIR PAUL J
IPC: G03G9/087
Abstract: A toner having an amorphous resin, a crystalline resin, and a colorant, wherein the crystalline resin has a melting temperature of at least 70.degree.C and a recrystallization point of at least 47.degree.C exhibits improved document offset properties a nd improved heat cohesion. Annealing the toner further improves the heat cohesion and morphology of the toner.
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公开(公告)号：CA3158232A1
公开(公告)日：2022-11-20
申请号：CA3158232
申请日：2022-05-10
Applicant: XEROX CORP
Inventor： MORIMITSU KENTARO , FARRUGIA VALERIE M
Abstract: Methods include dissolving a polyoxymethylene (POM) homopolymer or copolymer in one or more solvents at an elevated temperature (e.g., up to a boiling point+10 C (Ta1)+1oc) of the one or more solvents) to form a polymer mixture, wherein a difference in total Hansen solubility parameters (Mt) for the POM homopolymer or copolymer and the one or more solvents is 6 or less; cooling the polymer mixture to form a POM particle composition; and isolating the POM particle composition. Said method may be performed at ambient pressures.
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公开(公告)号：CA3006255C
公开(公告)日：2021-05-04
申请号：CA3006255
申请日：2018-05-28
Applicant: XEROX CORP
Inventor： VEREGIN RICHARD P N , FARRUGIA VALERIE M , ZWATZ EDWARD G
IPC: G03G9/08
Abstract: A hybrid toner composition including a first wax; a second wax that is different from the first wax; wherein the first wax comprises a paraffin wax having a peak melting point of from about 60 to about 80 °C; wherein the second wax comprises an ester wax having a peak melting point of from about 60 to about 80 °C; a first resin comprising an amorphous polyester resin and at second resin comprising at least one of a styrene, an acrylate, or a combination thereof; and an optional colorant.
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公开(公告)号：CA3091837A1
公开(公告)日：2021-03-09
申请号：CA3091837
申请日：2020-09-01
Applicant: XEROX CORP
Inventor： FARRUGIA VALERIE M , RESETCO CRISTINA , HAWKINS MICHAEL S , SRISKANDHA SHIVANTHI EASWARI , CLARIDGE ROBERT , MOORLAG CAROLYN PATRICIA , MOFFAT KAREN A
Abstract: 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.
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公开(公告)号：CA3091835A1
公开(公告)日：2021-03-09
申请号：CA3091835
申请日：2020-09-01
Applicant: XEROX CORP
Inventor： FARRUGIA VALERIE M , RESETCO CRISTINA , HAWKINS MICHAEL S , SRISKANDHA SHIVANTHI EASWARI , CLARIDGE ROBERT , MOORLAG CAROLYN PATRICIA , MOFFAT KAREN A
Abstract: A nonlimiting example method for synthesizing a pigment-pendent polyamide (PP-polyamide) may comprise: functionalizing metal oxide particles bound to a pigment particle with a compound having an epoxy to produce a surface treated pigment having a pendent epoxy; and reacting the pendent epoxy with a polyamide to yield the PP-polyamide. Another nonlimiting example method for synthesizing a PP-polyamide may comprise: functionalizing metal oxide particles bound to a pigment particle with a silica particle having a carboxylic acid surface treatment to produce a surface treated pigment having a pendent carboxylic acid; converting the pendent carboxylic acid to a pendent acid chloride; and reacting the pendent acid chloride with a polyamide to yield the PP-polyamide. Said PP-polyamide may be useful in producing objects by methods that include melt extrusion, injection molding, compression molding, melt spinning, melt emulsification, spray drying, cryogenic milling, freeze drying polymer dispersions, and precipitation of polymer dispersions.
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Patent Agency Ranking
公开(公告)号：CA3091718A1
公开(公告)日：2021-03-09
申请号：CA3091718
申请日：2020-08-31
Applicant: XEROX CORP
Inventor： FARRUGIA VALERIE M , RESETCO CHRISTINA , HAWKINS MICHAEL S , SRISKANDHA SHIVANTHI EASWARI , CLARIDGE ROBERT , MOORLAG CAROLYN PATRICIA , BIRAU MILHAELA MARIA
Abstract: A method for producing highly spherical polymer particles comprising a polyamide haying an optical absorber pendent from a backbone of the polyamide (OAMB-polyamide) may comprise: mixing a mixture comprising the OAMB-polyamide, a carrier fluid that is immiscible with the OAMB- polyamide, and optionally an emulsion stabilizer at a temperature greater than a melting point or softening temperature of the OAMB-polyamide and at a shear rate sufficiently high to disperse the OAMB-polyamide in the carrier fluid; and cooling the mixture to below the melting point or softening temperature of the OAMB-polyamide to form particles comprising the OAMB-polyamide and the emulsion stabilizer, when present, associated with an outer surface of the particles.
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公开(公告)号：CA3091712A1
公开(公告)日：2021-03-09
申请号：CA3091712
申请日：2020-08-31
Applicant: XEROX CORP
Inventor： FARRUGIA VALERIE M , RESETCO CHRISTINA , HAWKINS MICHAEL S , SRISKANDHA SHIVANTHI EASWARI , CLARIDGE ROBERT , MOORLAG CAROLYN PATRICIA , BIRAU MIHAELA
Abstract: Methods for producing a polyamide having an optical absorber pendent from the polyamide's backbone (OAMB-polyamide) may comprise: esterifying a hydroxyl-pendent optical absorber with a halogen-terminal aliphatic acid to yield a halogen-terminal alkyl- optical absorber; and N-alkylating a polyamide with the halogen-terminal alkyl-optical absorber to yield the OAMB- polyamide. Other methods for producing an OAMB-polyamide may comprise: esterifying a carboxyl-pendent optical absorber with a halogen-terminal aliphatic alcohol to yield a halogen- terminal alkyl-optical absorber; and N-alkylating a polyamide with the modified optical absorber to yield a polyamide having the OAMB-polyamide.
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公开(公告)号：CA3091606A1
公开(公告)日：2021-03-09
申请号：CA3091606
申请日：2020-08-28
Applicant: XEROX CORP
Inventor： FARRUGIA VALERIE M , RESETCO CHRISTINA , HAWKINS MICHAEL S , SRISKANDHA SHIVANTHI EASWARI , CLARIDGE ROBERT , MOORLAG CAROLYN PATRICIA
IPC: C08L101/12 , B33Y70/00 , C08J3/02 , C08J3/12 , C08K7/00
Abstract: Thermoplastic polymer particles can be produced that comprise a thermoplastic polymer and an emulsion stabilizer (e.g., nanoparticles and/or surfactant) associated with an outer surface of the particles. The nanoparticles may be embedded in the outer surface of the particles. Melt emulsification can be used to produce said particles. For example, a method may include: mixing a mixture comprising a thermoplastic polymer, an carrier fluid that is immiscible with the thermoplastic polymer, and the emulsion stabilizer at a temperature greater than a melting point or softening temperature of the thermoplastic polymer and at a shear rate sufficiently high to disperse the thermoplastic polymer in the carrier fluid; cooling the mixture to below the melting point or softening temperature of the thermoplastic polymer to form the thermoplastic polymer particles; and separating the thermoplastic polymer particles from the carrier fluid.
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公开(公告)号：DE102011002584B4
公开(公告)日：2020-09-24
申请号：DE102011002584
申请日：2011-01-12
Applicant: XEROX CORP
Inventor： VANBESIEN DARYL W , MOFFAT KAREN A , GONG YI XIN , DALAL EDUL N , WANG JING , WOSNICK JORDAN , VONG CUONG , FARRUGIA VALERIE M , VEREGIN RICHARD P N
IPC: G03G9/08
Abstract: Paar aus zusammenpassenden cyanfarbenen Tonern, umfassend einen hellcyanfarbenen Toner zusammen mit einem zweiten cyanfarbenen Toner, wobei die Farbe des zweiten cyanfarbenen Toners, der bei einer vorbestimmten Deckung des Halbtonbereichs auf ein Substrat gedruckt wurde, der Farbe des festen (100%) gedruckten Messfelds des hellcyanfarbenen Toners entspricht, wobei der hellcyanfarbene Toner umfasst:- mindestens ein Harz;- ein optionales Wachs; und- ein Farbmittel, umfassend mindestens ein cyanfarbenes Farbmittel in Kombination mit mindestens einem Farbton einstellenden Farbmittel, das Licht mit Wellenlängen von 500 bis 600 Nanometern absorbiert.
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公开(公告)号：CA2926276C
公开(公告)日：2018-06-26
申请号：CA2926276
申请日：2016-04-05
Applicant: XEROX CORP
Inventor： FARRUGIA VALERIE M , CHI WENDY , GARDNER SANDRA J
IPC: C08J5/02 , B82Y30/00 , C08J3/20 , C08J7/04 , C08K3/08 , C08L25/14 , C09D11/00 , C09D11/52 , G03G9/093
Abstract: Ionomer composite resins and core/shell nanoparticles are described. The ionomer resin contains a metal ion. The metal can be in the core, shell or both.
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