Patents by Inventor Rosa M. Duque
Rosa M. Duque has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 11579138Abstract: A method for assessing polymeric additive content A in a polymeric particle mixture may comprise determining a concentration B of a metal cation in a polymeric particle mixture comprising parent polymeric particles and polymeric additive particles, wherein the metal cation is selected from alkali earth metals and alkali metals, other than sodium (Na), and the metal cation is capable of forming a water-soluble base; determining a concentration C of the metal cation in the parent polymeric particles; determining a concentration D of the metal cation in the polymeric additive particles; and calculating a polymeric additive content A using formula A=(B?C)/D.Type: GrantFiled: December 3, 2019Date of Patent: February 14, 2023Assignee: Xerox CorporationInventors: Richard P. N. Veregin, Kimberly D. Nosella, Rosa M. Duque, Melanie Lynn Davis, David R. Kurceba, Cuong Vong
-
Publication number: 20210164960Abstract: A method for assessing polymeric additive content A in a polymeric particle mixture may comprise determining a concentration B of a metal cation in a polymeric particle mixture comprising parent polymeric particles and polymeric additive particles, wherein the metal cation is selected from alkali earth metals and alkali metals, other than sodium (Na), and the metal cation is capable of forming a water-soluble base; determining a concentration C of the metal cation in the parent polymeric particles; determining a concentration D of the metal cation in the polymeric additive particles; and calculating a polymeric additive content A using formula A=(B?C)/D.Type: ApplicationFiled: December 3, 2019Publication date: June 3, 2021Inventors: Richard P. N. Veregin, Kimberly D. Nosella, Rosa M. Duque, Melanie Lynn Davis, David R. Kurceba, Cuong Vong
-
Patent number: 9499720Abstract: The present disclosure provides a bio-based, branched polyester resin comprising the condensation product of a hydroxyl donor, including glycerol carbonate, and a cyclic polyhydroxyl acceptor, such as abietic acid, neoabietic acid, palustric acid, levopimaric acid, dihydroabietic acid, pimaric acid, and isopimaric acid, that may be used with a polyacid, including fumaric acid, maleic acid, succinic acid, itaconic acid, dodecylsuccinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, and dodecane diacid, to form a polyester useful in manufacturing toner for imaging devices.Type: GrantFiled: December 18, 2012Date of Patent: November 22, 2016Assignee: Xerox CorporationInventors: Valerie M Farrugia, Rosa M Duque
-
Patent number: 9328260Abstract: Disclosed are processes for the preparation of rosin diols accomplished by the reaction of a rosin acid with a glycerine carbonate in the presence of a catalyst, and subsequently where the rosin diol can be reacted with a diacid to generate an amorphous polyester resin.Type: GrantFiled: January 15, 2014Date of Patent: May 3, 2016Assignee: Xerox CorporationInventors: Guerino G. Sacripante, Ke Zhou, Rosa M. Duque, Sonja Hadzidedic, Biritawit Asfaw
-
Publication number: 20150361288Abstract: Disclosed herein are sacrificial coating compositions comprising at least one polymer chosen from polyvinyl alcohol and polyvinyl alcohol copolymers, a wax emulsion comprising at least one wax, at least one surfactant, at least one hygroscopic agent, and water. In certain embodiments, the at least one wax in the wax emulsion has a melting point approaching but just below the ink transfer temperature, such as, for example, a melting point ranging from about 50° C. to about 150° C. Also disclosed herein is a blanket material suitable for transfix printing comprising a sacrificial coating composition, as well as an indirect printing process comprising a step of applying a sacrificial coating composition to a blanket material.Type: ApplicationFiled: June 17, 2014Publication date: December 17, 2015Inventors: Guiqin Song, Gordon Sisler, Brynn Dooley, Rosa M. Duque, Marcel P. Breton, Suxia Yang, Frank Ping Hay Lee, Michael J. D'Amato, Aurelian Valeriu Magdalinis, Biby Esther Abraham
-
Publication number: 20150197668Abstract: Disclosed are processes for the preparation of rosin diols accomplished by the reaction of a rosin acid with a glycerine carbonate in the presence of a catalyst, and subsequently where the rosin diol can be reacted with a diacid to generate an amorphous polyester resin.Type: ApplicationFiled: January 15, 2014Publication date: July 16, 2015Applicant: XEROX CORPORATIONInventors: Guerino G. Sacripants, Ke Zhou, Rosa M. Duque, Sonja Hadzidedic, Biritawit Asfaw
-
Publication number: 20140170545Abstract: The present disclosure provides a bio-based, branched polyester resin comprising the condensation product of a hydroxyl donor and a cyclic polyhydroxyl acceptor that may be used with a polyacid to form a polyester which may be used in manufacturing toner for imaging devices.Type: ApplicationFiled: December 18, 2012Publication date: June 19, 2014Applicant: XEROX CORPORATIONInventors: Valerie M. Farrugia, Rosa M. Duque
-
Patent number: 8574802Abstract: Environmentally friendly toner particles are provided which may include a bio-based amorphous polyester resin, optionally in combination with another amorphous resin and/or a crystalline resin. Methods for providing these toners are also provided. In embodiments, the bio-based amorphous polyester resin includes a biologically derived diol, such as 2,3-butanediol.Type: GrantFiled: February 24, 2011Date of Patent: November 5, 2013Assignee: Xerox CorporationInventors: Valerie M. Farrugia, Guerino G. Sacripante, Rosa M. Duque
-
Patent number: 8574803Abstract: Disclosed is a toner that includes a mixture of a bio-based amorphous polyester resin, a crystalline polyester resin, and a colorant.Type: GrantFiled: December 23, 2011Date of Patent: November 5, 2013Assignee: Xerox CorporationInventors: Guerino G Sacripante, Ke Zhou, Rosa M Duque, Sonja Hadzidedic, Biritawit Asfaw
-
Publication number: 20130164668Abstract: Disclosed is a toner that includes a mixture of a bio-based amorphous polyester resin, a crystalline polyester resin, and a colorant.Type: ApplicationFiled: December 23, 2011Publication date: June 27, 2013Applicant: XEROX CORPORATIONInventors: Guerino G. Sacripante, Ke Zhou, Rosa M. Duque, Sonja Hadzidedic, Biritawit Asfaw
-
Patent number: 8431306Abstract: Embodiments include a toner having a polyester resin derived from diacids and diesters, in combination with at least one diol, in embodiments a cycloaliphatic diol, an optional crystalline resin, an optional colorant, and an optional wax.Type: GrantFiled: March 9, 2010Date of Patent: April 30, 2013Assignee: Xerox CorporationInventors: Guerino G. Sacripante, Daryl W. Vanbesien, Biritawit Asfaw, Rosa M. Duque, Sonja Hadzidedic
-
Publication number: 20130046110Abstract: A process for forming arylamines by continuous Buchwald-Hartwig reaction using, in part, a plug flow reactor with a fluid flow path greater than about 1 mm in diameter and a single solvent under pressure to form a product with a space time yield of at least 100 g/L/hr.Type: ApplicationFiled: August 19, 2011Publication date: February 21, 2013Applicant: XEROX CORPORATIONInventors: Karina Lopez, Santiago Faucher, Marko Saban, Rosa M. Duque
-
Publication number: 20120219894Abstract: Environmentally friendly toner particles are provided which may include a bio-based amorphous polyester resin, optionally in combination with another amorphous resin and/or a crystalline resin. Methods for providing these toners are also provided. In embodiments, the bio-based amorphous polyester resin includes a biologically derived diol, such as 2,3-butanediol.Type: ApplicationFiled: February 24, 2011Publication date: August 30, 2012Applicant: XEROX CORPORATIONInventors: Valerie M. Farrugia, Guerino G. Sacripante, Rosa M. Duque
-
Patent number: 8247156Abstract: A process for making a latex emulsion suitable for use in a toner composition includes contacting at least one crystalline polyester resin with an organic solvent and a stabilizing agent to form a resin mixture, adding a neutralizing agent, and deionized water to the resin mixture, removing the solvent from the formed latex, and continuously recovering latex particles.Type: GrantFiled: September 9, 2010Date of Patent: August 21, 2012Assignee: Xerox CorporationInventors: Valerie M. Farrugia, Kimberly D. Nosella, Rosa M. Duque
-
Publication number: 20120064453Abstract: A process for making a latex emulsion suitable for use in a toner composition includes contacting at least one crystalline polyester resin with an organic solvent and a stabilizing agent to form a resin mixture, adding a neutralizing agent, and deionized water to the resin mixture, removing the solvent from the formed latex, and continuously recovering latex particles.Type: ApplicationFiled: September 9, 2010Publication date: March 15, 2012Applicant: XEROX CORPORATIONInventors: Valerie M. Farrugia, Kimberly D. Nosella, Rosa M. Duque
-
Publication number: 20120065359Abstract: An enzymatic polymerization method of covalently linking a colorant to a polyester to produce a colorant-polyester compound, the method including the steps of: (a) providing a reaction solution comprised of an ester monomer, a colorant having or functionalized to have a hydroxyl group, and an enzymatic catalyst; (b) reacting the ester monomer and the colorant using the enzymatic catalyst to produce a polymeric product, wherein the polymeric product includes a colorant-polyester compound; and (c) separating the polymeric product from the reaction solution. A colorant-polyester compound includes a colorant covalently linked to a polyester and the polyester is obtained by polymerizing a lactone.Type: ApplicationFiled: September 10, 2010Publication date: March 15, 2012Applicant: XEROX CORPORATIONInventors: Santiago FAUCHER, Kimberly D. Nosella, Rosa M. Duque
-
Publication number: 20110223525Abstract: Embodiments include a toner having a polyester resin derived from diacids and diesters, in combination with at least one diol, in embodiments a cycloaliphatic diol, an optional crystalline resin, an optional colorant, and an optional wax.Type: ApplicationFiled: March 9, 2010Publication date: September 15, 2011Applicant: XEROX CORPORATIONInventors: Guerino G. Sacripante, Daryl W. Vanbesien, Biritawit Asfaw, Rosa M. Duque, Sonja Hadzidedic
-
Patent number: 7736832Abstract: Toners made by the emulsion aggregation process comprising an amorphous resin and a nucleated crystalline resin. Such toners demonstrate improved charging performance in the A-zone and the C-zone, improved heat cohesion and improved resistivity.Type: GrantFiled: January 29, 2007Date of Patent: June 15, 2010Assignee: Xerox CorporationInventors: Valerie M. Farrugia, Michael S. Hawkins, Rosa M. Duque, Britawit Asfaw, Richard P. N. Veregin, Guerino G. Sacripante
-
Publication number: 20100122642Abstract: An ink having a polymer matrix including carbon nanotubes dispersed in a polymer; optionally one or more colorants; and optionally one or more waxes.Type: ApplicationFiled: November 17, 2008Publication date: May 20, 2010Applicant: XEROX CORPORATIONInventors: Valerie M. FARRUGIA, Yu QI, Paul J. GERROIR, Rosa M. DUQUE, Biritawit ASFAW
-
Publication number: 20100124713Abstract: A toner comprising: a polymer matrix comprising carbon nanotubes dispersed in a polymer; optionally one or more colorants; and optionally one or more waxes.Type: ApplicationFiled: November 17, 2008Publication date: May 20, 2010Applicant: XEROX CORPORATIONInventors: Valerie M. FARRUGIA, Yu QI, Paul J. GERROIR, Rosa M. DUQUE, Biritawit ASFAW, Michael S. HAWKINS