公开(公告)号：US20230407087A1

公开(公告)日：2023-12-21

申请号：US18462059

申请日：2023-09-06

Applicant: Xerox Corporation

Inventor： Mihaela Maria BIRAU ,  Valerie M. FARRUGIA

IPC: C08L77/02 ,  C08J3/14 ,  C08K3/04 ,  C08K3/22 ,  C08K5/00 ,  C08K5/08 ,  C08G69/48 ,  C08J3/12

CPC classification number: C08L77/02 ,  C08J3/14 ,  C08K3/04 ,  C08K3/22 ,  C08K5/005 ,  C08K5/08 ,  C08G69/48 ,  C08J3/12 ,  C08K2201/011 ,  B33Y80/00

Abstract: A method for producing highly spherical polymer particles comprising a polyamide having 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.

公开(公告)号：US20230374218A1

公开(公告)日：2023-11-23

申请号：US18359278

申请日：2023-07-26

Applicant: Xerox Corporation

Inventor： Mihaela Maria BIRAU ,  Valerie M. FARRUGIA

IPC: C08G69/48

CPC classification number: C08G69/48

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.

公开(公告)号：US20230373130A1

公开(公告)日：2023-11-23

申请号：US18366351

申请日：2023-08-07

Applicant: Xerox Corporation

Inventor： Valerie M. FARRUGIA ,  Mihaela Maria BIRAU

IPC: B29B9/12 ,  C08K5/00 ,  C08L77/00 ,  C08J3/14 ,  C08J3/215 ,  B29B9/16

CPC classification number: B29B9/12 ,  C08K5/0041 ,  C08K5/005 ,  C08L77/00 ,  C08J3/14 ,  C08J3/215 ,  B29B9/16 ,  B29B2009/125 ,  C08K2201/011 ,  C08J2377/02

Abstract: Optical absorber-containing thermoplastic polymer particles (OACTP particles) may be produced by methods that comprise: mixing a mixture comprising a thermoplastic polymer, a carrier fluid that is immiscible with the thermoplastic polymer, and optionally an 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 solidified particles comprising the thermoplastic polymer; separating the solidified particles from the carrier fluid; and exposing the solidified particles to an optical absorber to produce the OACTP particles.

公开(公告)号：US20250145827A1

公开(公告)日：2025-05-08

申请号：US18502772

申请日：2023-11-06

Applicant: Xerox Corporation

Inventor： Naveen CHOPRA ,  Mihaela Maria BIRAU ,  Aleksa DOVIJARSKI ,  Gregory MCGUIRE

IPC: C08L87/00 ,  B01J23/14 ,  C08J3/24 ,  C08J3/28

Abstract: Methods for preparing acrylated polyvinyl alcohol (PVA)-polyester graft copolymers may comprise: forming a PVA-polyester graft copolymer in a solvent; and without isolating the PVA-polyester graft copolymer or separating the PVA-polyester graft copolymer from the solvent, reacting the PVA-polyester graft copolymer with an acrylating agent, optionally in the presence of a base, to form an acrylated PVA-polyester graft copolymer.

公开(公告)号：US20180051183A1

公开(公告)日：2018-02-22

申请号：US15239502

申请日：2016-08-17

Applicant: XEROX CORPORATION

Inventor： C. Geoffrey ALLEN ,  Mihaela Maria BIRAU ,  Carolyn MOORLAG ,  Biby E. ABRAHAM ,  Marcel P. BRETON

IPC: C09D11/037 ,  C09D11/033 ,  C09D11/101 ,  C09D11/104 ,  C09D11/108 ,  B41F7/02

CPC classification number: C09D11/037 ,  B41F7/02 ,  B41M1/06 ,  B41M5/025 ,  B41M5/03 ,  C09D11/00 ,  C09D11/02 ,  C09D11/033 ,  C09D11/101 ,  C09D11/104 ,  C09D11/108

Abstract: An ink composition useful for digital offset printing applications includes a colorant and a high viscosity thickening agent. A process for variable data lithographic printing includes applying a dampening fluid to an imaging member surface; forming a latent image by evaporating the dampening fluid from selective locations on the imaging member surface to form hydrophobic non-image areas and hydrophilic image areas; developing the latent image by applying an ink composition comprising an ink component to the hydrophilic image areas, the ink composition comprising orange/violet/green (OVG) ink formulations resulting in a 7-color ink set meeting the extended color gamut requirements for digital advanced lithographic imaging printing.