Patents Assigned to CID Centro de Investigacion y Desarrollo Tecnologico, S.A. De C.V.
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Publication number: 20130144009Abstract: 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: ApplicationFiled: January 13, 2013Publication date: June 6, 2013Applicant: CID Centro de Investigacion y Desarrollo Tecnológico S.A. de C.V.Inventor: CID Centro de Investigacion y Desarrollo Tecnologico S.A. de C.V.
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Patent number: 8357759Abstract: 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: GrantFiled: August 23, 2006Date of Patent: January 22, 2013Assignee: CID Centro de Investigación y Desarrollo Tecnológico S.A. de C.V.Inventors: Alfonso González Montiel, Leticia Flores Santos, Enrique Saldívar Guerra
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Patent number: 8030409Abstract: 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: GrantFiled: October 25, 2007Date of Patent: October 4, 2011Assignee: CID Centro de Investigación y Desarrollo Tecnológico, S.A. de C.V.Inventors: Enrique Saldivar Guerra, Alfonso González Montiel
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Publication number: 20080108752Abstract: 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: ApplicationFiled: October 25, 2007Publication date: May 8, 2008Applicant: CID Centro de Investigacion y Desarrollo Tecnologico, S.A. De. C.V.Inventors: Enrique Saldivar Guerra, Alfonso Gonzalez Montiel
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Patent number: 7323528Abstract: 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: GrantFiled: July 16, 2003Date of Patent: January 29, 2008Assignee: CID Centro de Investigacion y Desarrollo Tecnologico, S.A. De C.V.Inventors: Enrique Saldivar Guerra, Alfonso González Montiel
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Publication number: 20060261665Abstract: A decorated wheel is depicted having a permanent stylized cover comprising: a base wheel; an intermediate coat made from a low-density polymer attached on the outer face of the base wheel; and a stylized cover permanently attached on the intermediate layer; the stylized cover has a shape, color, and brightness according to a previously established design, is made from a thermoformable polymer such as bisphenol A polycarbonate o the copolymers thereof, or is made from stainless steel; if the stylized cover is made from bisphenol A polycarbonate or the copolymers thereof, it has a class “A” finish on its surface; also, a process to manufacture the decorated wheel with a stylized permanent cover is depicted and, in the process, the stylized cover and the base wheel form a closed chamber where the intermediate layer made from the low-density polymer is encapsulated.Type: ApplicationFiled: May 3, 2006Publication date: November 23, 2006Applicant: CID, CENTRO DE INVESTIGACION Y DESARROLLO TECNOLOGICO, S.A. DE C.V.Inventors: Ivan Gomora-Camargo, Isidro Gomez-Tellez, Jose Cendejas-Maciel, Luis Mille-Loera, Edgar Espinoza-Rodriguez, Alfonso Gonzalez-Montiel
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Publication number: 20040077788Abstract: 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: ApplicationFiled: July 16, 2003Publication date: April 22, 2004Applicant: CID Centro de Investigacion y Desarrollo Tecnologico, S.A. De. C.V.Inventors: Enrique Saldivar Guerra, Alfonso Gonzalez Montiel
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Patent number: 6646028Abstract: A process is provided for making a carbon-filled rubber having a uniform dispersion of nanometric-sized carbon black particles. Fluffy carbon black is received as a slurry in water and added to latex rubber before or during coagulation in an emulsion styrene butadiene rubber plant, or fluffy carbon black is similarly incorporated in rubber using a different type of rubber-manufacturing process. A uniform dispersion of smaller-than-usual carbon black particles in rubber is formed, which provides a black masterbatch rubber with superior mechanical and rheological properties. Ash and grit is removed from the fluffy carbon black slurry, which further improves the properties of the carbon-filled rubber by reducing defects in the rubber caused by the ash or grit.Type: GrantFiled: December 5, 2001Date of Patent: November 11, 2003Assignee: CID Centro de Investigacion y Desarrollo Tecnologico, S.A. de C.V.Inventors: Francisco Lopez-Serrano Ramos, Luis Enrique Mille Loera, Angel Garcia Garza
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Publication number: 20020111413Abstract: A process is provided for making a carbon-filled rubber having a uniform dispersion of nanometric-sized carbon black particles. Fluffy carbon black is received as a slurry in water and added to latex rubber before or during coagulation in an emulsion styrene butadiene rubber plant, or fluffy carbon black is similarly incorporated in rubber using a different type of rubber-manufacturing process. A uniform dispersion of smaller-than-usual carbon black particles in rubber is formed, which provides a black masterbatch rubber with superior mechanical and rheological properties. Ash and grit is removed from the fluffy carbon black slurry, which further improves the properties of the carbon-filled rubber by reducing defects in the rubber caused by the ash or grit.Type: ApplicationFiled: December 5, 2001Publication date: August 15, 2002Applicant: CID Centro de Investigacion y Desarrollo Tecnologico, S.A. de C.V.Inventors: Francisco Lopez-Serrano Ramos, Luis Enrique Mille Loera, Angel Garcia Garza