Patents by Inventor Enrique Saldivar Guerra

Enrique Saldivar Guerra 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: 10240093
    Abstract: A method having the following steps: subjecting plastic waste material to a thermal pre-treatment in order to produce a liquid plastic mass, wherein the thermal pre-treatment of the plastic material is carried out in an inert gas atmosphere at a temperature that varies between 110° C. and 310° C.; simultaneously feeding the liquid plastic mass to a reaction apparatus; bringing the plastic mass into contact with a bed of particles of inorganic porous material contained inside the reaction apparatus at a temperature of between 300° and 600° C.; inducing thermocatalytic decomposition reactions at a temperature of between 300 and 600° C. in order to generate a mixture of hydrocarbons in a vapor phase; and separating the hydrocarbons from the vapor phase current generated inside the reaction means in order to produce a liquid mixture of hydrocarbons.
    Type: Grant
    Filed: July 25, 2013
    Date of Patent: March 26, 2019
    Assignee: NEWPEK S.A. DE C.V.
    Inventors: Luis Noreña Franco, Julia Aguilar Pliego, Mirella Gutiérrez Arzaluz, Maricela Sánchez Sánchez, Luis Alberto Villareal Cárdenas, Andrés Rosas Camacho, Arturo Cisneros Farías, Enrique Saldivar Guerra, Ivan Alejandro De La Peña Mireles, José Ramiro Infante Martínez
  • Publication number: 20160160127
    Abstract: The invention relates to a method for producing hydrocarbons by catalytic decomposition of plastic waste products in a single step, said method comprising: subjecting the plastic waste material to a thermal pre-treatment in order to produce a liquid plastic mass, wherein the thermal pre-treatment of the plastic material is carried out in an inert gas atmosphere at a temperature that varies between 110° C. and 310° C.; simultaneously feeding the liquid plastic mass to a reaction apparatus; bringing the plastic mass into contact with a bed of particles of inorganic porous material contained inside the reaction apparatus at a temperature of between 300° and 600° C.; inducing thermocatalytic decomposition reactions at a temperature of between 300 and 600° C. in order to generate a mixture of hydrocarbons in a vapour phase; and separating the hydrocarbons from the vapour phase current generated inside the reaction means in order to produce a liquid mixture of hydrocarbons.
    Type: Application
    Filed: July 25, 2013
    Publication date: June 9, 2016
    Inventors: Luis NOREÑA FRANCO, Julia AGUILAR PLIEGO, Mirella GUTIÉRREZ ARZALUS, Maricela SÁNCHEZ SÁNCHEZ, Luis Alberto VILLAREAL CÁRDENAS, Andrés ROSAS CAMACHO, Arturo CISNEROS FARÍAS, Enrique SALDIVAR GUERRA, Ivan Alejandro DE LA PEÑA MIRELES, José Ramiro INFANTE MARTÍNEZ
  • Patent number: 8865840
    Abstract: A process for making a block copolymer compatibilizer, comprising reacting an acrylic monomer that has functional groups with one or more vinyl monomers in the presence of a free radical initiator and a stable free radical to form a reaction product that includes residual unreacted acrylic monomer, and reacting one or more vinyl monomers with the reaction product to form a second block that incorporates the residual unreacted acrylic monomer. A blend composition comprising a first thermoplastic polymer, which has functional groups, a reactive block copolymer that has functional groups in two or more blocks, and a second thermoplastic polymer that is compatible with one block of the block copolymer, where the functional groups in the first thermoplastic react with the functional groups in the block copolymer.
    Type: Grant
    Filed: January 13, 2013
    Date of Patent: October 21, 2014
    Assignee: Macro-M S.A. de C.V.
    Inventors: Alfonso González Montiel, Leticia Flores Santos, Enrique Saldívar Guerra
  • Patent number: 8357759
    Abstract: A process for making a block copolymer compatibilizer, comprising reacting an acrylic monomer that has functional groups with one or more vinyl monomers in the presence of a free radical initiator and a stable free radical to form a reaction product that includes residual unreacted acrylic monomer, and reacting one or more vinyl monomers with the reaction product to form a second block that incorporates the residual unreacted acrylic monomer. A blend composition comprising a first thermoplastic polymer, which has functional groups, a reactive block copolymer that has functional groups in two or more blocks, and a second thermoplastic polymer that is compatible with one block of the block copolymer, where the functional groups in the first thermoplastic react with the functional groups in the block copolymer.
    Type: Grant
    Filed: August 23, 2006
    Date of Patent: January 22, 2013
    Assignee: CID Centro de Investigación y Desarrollo Tecnológico S.A. de C.V.
    Inventors: Alfonso González Montiel, Leticia Flores Santos, Enrique Saldívar Guerra
  • Patent number: 8030409
    Abstract: The present invention provides a block copolymer of styrene and an unsaturated cyclic anhydride, such as maleic anhydride, a process for making a copolymer using controlled free radical polymerization in which certain parameters are adjusted to control the microstructure and molecular weight of the copolymer, and a method for using the block copolymer, including as a compatibilizer. Microstructure and molecular weight in the block copolymer can be controlled by adjusting the ratio of stable free radical to initiator. The copolymer can be made in a one step process and has a controlled microstructure that allows one block to be reactive toward several chemical moieties available in engineering polymers and the other block to be fully miscible with polystyrene or polymers miscible with polystyrene or polymers miscible with polystyrene such as polyphenylene ether.
    Type: Grant
    Filed: October 25, 2007
    Date of Patent: October 4, 2011
    Assignee: CID Centro de Investigación y Desarrollo Tecnológico, S.A. de C.V.
    Inventors: Enrique Saldivar Guerra, Alfonso González Montiel
  • Publication number: 20080108752
    Abstract: The present invention provides a block copolymer of styrene and an unsaturated cyclic anhydride, such as maleic anhydride, a process for making a copolymer using controlled free radical polymerization in which certain parameters are adjusted to control the microstructure and molecular weight of the copolymer, and a method for using the block copolymer, including as a compatibilizer. Microstructure and molecular weight in the block copolymer can be controlled by adjusting the ratio of stable free radical to initiator. The copolymer can be made in a one step process and has a controlled microstructure that allows one block to be reactive toward several chemical moieties available in engineering polymers and the other block to be fully miscible with polystyrene or polymers miscible with polystyrene or polymers miscible with polystyrene such as polyphenylene ether.
    Type: Application
    Filed: October 25, 2007
    Publication date: May 8, 2008
    Applicant: CID Centro de Investigacion y Desarrollo Tecnologico, S.A. De. C.V.
    Inventors: Enrique Saldivar Guerra, Alfonso Gonzalez Montiel
  • Patent number: 7323528
    Abstract: The present invention provides a block copolymer of styrene and an unsaturated cyclic anhydride, such as maleic anhydride, a process for making a copolymer using controlled free radical polymerization in which certain parameters are adjusted to control the microstructure and molecular weight of the copolymer, and a method for using the block copolymer, including as a compatibilizer. Microstructure and molecular weight in the block copolymer can be controlled by adjusting the ratio of stable free radical to initiator. The copolymer can be made in a one step process and has a controlled microstructure that allows one block to be reactive toward several chemical moieties available in engineering polymers and the other block to be fully miscible with polystyrene or polymers miscible with polystyrene or polymers miscible with polystyrene such as polyphenylene ether.
    Type: Grant
    Filed: July 16, 2003
    Date of Patent: January 29, 2008
    Assignee: CID Centro de Investigacion y Desarrollo Tecnologico, S.A. De C.V.
    Inventors: Enrique Saldivar Guerra, Alfonso González Montiel
  • Publication number: 20070049696
    Abstract: A process for making a block copolymer compatibilizer, comprising reacting an acrylic monomer that has functional groups with one or more vinyl monomers in the presence of a free radical initiator and a stable free radical to form a reaction product that includes residual unreacted acrylic monomer, and reacting one or more vinyl monomers with the reaction product to form a second block that incorporates the residual unreacted acrylic monomer. A blend composition comprising a first thermoplastic polymer, which has functional groups, a reactive block copolymer that has functional groups in two or more blocks, and a second thermoplastic polymer that is compatible with one block of the block copolymer, where the functional groups in the first thermoplastic react with the functional groups in the block copolymer.
    Type: Application
    Filed: August 23, 2006
    Publication date: March 1, 2007
    Applicant: CID Centro de Investigacion y Desarrollo Tecnologico SA de CV
    Inventors: Alfonso Gonzalez Montiel, Leticia Flores Santos, Enrique Saldivar Guerra
  • Publication number: 20040077788
    Abstract: The present invention provides a block copolymer of styrene and an unsaturated cyclic anhydride, such as maleic anhydride, a process for making a copolymer using controlled free radical polymerization in which certain parameters are adjusted to control the microstructure and molecular weight of the copolymer, and a method for using the block copolymer, including as a compatibilizer. Microstructure and molecular weight in the block copolymer can be controlled by adjusting the ratio of stable free radical to initiator. The copolymer can be made in a one step process and has a controlled microstructure that allows one block to be reactive toward several chemical moieties available in engineering polymers and the other block to be fully miscible with polystyrene or polymers miscible with polystyrene or polymers miscible with polystyrene such as polyphenylene ether.
    Type: Application
    Filed: July 16, 2003
    Publication date: April 22, 2004
    Applicant: CID Centro de Investigacion y Desarrollo Tecnologico, S.A. De. C.V.
    Inventors: Enrique Saldivar Guerra, Alfonso Gonzalez Montiel