-
公开(公告)号：CA3091718C
公开(公告)日：2023-09-26
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.
-
公开(公告)号：CA3077847A1
公开(公告)日：2020-10-10
申请号：CA3077847
申请日：2020-04-08
Applicant: XEROX CORP
Inventor： RESETCO CHRISTINA , ALI SYED , BROWN CARLA
IPC: C09D11/30
Abstract: An aqueous ink composition for inkjet printing on non-porous substrates and a method for forming the same are disclosed. For example, the method includes preparing a primary polymer latex with an aromatic functional group, a hydrogen-bonding group, a flexible side-chain, and an ionic functional group and mixing the primary polymer latex with a secondary latex binder and one or more co-solvents.
-
公开(公告)号：CA3091828C
公开(公告)日：2023-01-03
申请号：CA3091828
申请日：2020-09-01
Applicant: XEROX CORP
Inventor： FARRUGIA VALERIE M , RESETCO CHRISTINA , HAWKINS MICHAEL S , SRISKANDHA SHIVANTHI EASWARI , CLARIDGE ROBERT , MOORLAG CAROLYN PATRICIA , BIRAU MIHAELA MARIA
Abstract: Methods for synthesizing a polyamide having the optical absorber in the backbone of the polyamide may comprise: polymerizing polyamide monomers in the presence of an optical absorber selected from the group consisting of a polyamine optical absorber, a polyacid optical absorber, an amino acid optical absorber, and any combination thereof to yield the polyamide having the optical absorber in the backbone of the polyamide. Said polyamides having the optical absorber in the backbone of the 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.
-
公开(公告)号：CA3091659A1
公开(公告)日：2021-03-09
申请号：CA3091659
申请日：2020-08-31
Applicant: XEROX CORP
Inventor： CLARIDGE ROBERT , RESETCO CHRISTINA , SRISKANDHA SHIVANTHI EASWARI , FARRUGIA VALERIE , ZWARTZ EDWARD G
IPC: B29C64/153 , B33Y10/00 , B33Y70/10 , C08J7/06
Abstract: 20190368CA01 ABS TRACT Melt emulsification may be employed to form elastomeric particulates in a narrow size range when nanoparticics and a sulfonatc surfactant arc 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. 46 Date Recue/Date Received 2022-02-07
-
公开(公告)号：CA3091653A1
公开(公告)日：2021-03-09
申请号：CA3091653
申请日：2020-08-31
Applicant: XEROX CORP
Inventor： RESETCO CHRISTINA , SRISKANDHA SHIVANTHI E , ZWARTZ EDWARD G , HAWKINS MICHAEL S , FARRUGIA VALERIE M
Abstract: 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 foini, 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 [im to about 1,000 m.
-
Patent Agency Ranking
公开(公告)号：CA3091712C
公开(公告)日：2023-09-26
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.
-
公开(公告)号：CA3077847C
公开(公告)日：2022-07-26
申请号：CA3077847
申请日：2020-04-08
Applicant: XEROX CORP
Inventor： RESETCO CHRISTINA , ALI SYED , BROWN CARLA
IPC: C09D11/30
Abstract: An aqueous ink composition for inkjet printing on non-porous substrates and a method for forming the same are disclosed. For example, the method includes preparing a primary polymer latex with an aromatic functional group, a hydrogen-bonding group, a flexible side-chain, and an ionic functional group and mixing the primary polymer latex with a secondary latex binder and one or more co- solvents.
-
公开(公告)号：CA3091828A1
公开(公告)日：2021-03-09
申请号：CA3091828
申请日：2020-09-01
Applicant: XEROX CORP
Inventor： FARRUGIA VALERIE M , RESETCO CHRISTINA , HAWKINS MICHAEL S , SRISKANDHA SHIVANTHI EASWARI , CLARIDGE ROBERT , MOORLAG CAROLYN PATRICIA , BIRAU MIHAELA MARIA
Abstract: Methods for synthesizing a polyamide having the optical absorber in the backbone of the polyamide may comprise: polymerizing polyamide monomers in the presence of an optical absorber selected from the group consisting of a polyamine optical absorber, a polyacid optical absorber, an amino acid optical absorber, and any combination thereof to yield the polyamide having the optical absorber in the backbone of the polyamide. Said polyamides having the optical absorber in the backbone of the 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.
-
公开(公告)号：CA3091727A1
公开(公告)日：2021-03-09
申请号：CA3091727
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 , JAMALI HOJJAT SEYED
Abstract: A method of producing thermoplastic particles may comprise: mixing a melt emulsion comprising (a) a continuous phase that comprises a carrier fluid haying a polarity Hansen solubility parameter (dP) of about 7 MPa0.5 or less, (b) a dispersed phase that comprises a dispersing fluid haying a dP of about 8 MPa0.5 or more, and (c) an inner phase that comprises a thermoplastic polyester at a temperature greater than a melting point or softening temperature of the thermoplastic polyester and at a shear rate sufficiently high to disperse the thermoplastic polyester in the dispersed phase; and cooling the melt emulsion to below the melting point or softening temperature of the thermoplastic polyester to form solidified particles comprising the thermoplastic polyester.
-
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.
-
-
-
-
-
-
-
-
-
Search Results
16
records
(took 0.02 seconds)
