Patents Assigned to Suzano S.A.
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Publication number: 20240110069Abstract: The present technology refers to the process for obtaining dye based on carbon nanotubes and cellulose microfibrils for making films and sensors with piezoresistive characteristics for application in strain, impact and stress sensing.Type: ApplicationFiled: September 3, 2021Publication date: April 4, 2024Applicants: UNIVERSIDADE FEDERAL DE MINAS GERAIS - UFMG, SUZANO S.A.Inventors: Thiago Henrique Rodrigues DA CUNHA, André Santarosa FERLAUTO, Rodrigo Gribel LACERDA, Luiz Orlando LADEIRA, Sérgio DE OLIVEIRA, Cláudio Laudares Passos SILVA, Vinicius Gomide DE CASTRO, Raissa Guerra RESENDE, Felipe Luiz Queiroz FERREIRA, Germano Andrade SIQUEIRA, Tarcizo da Cruz Costa DE SOUZA
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Publication number: 20240043353Abstract: The present invention relates to the field of controlled release systems of a substance in a medium, as well as embodiments by capsules using biodegradable polymers such as lignin and PVA.Type: ApplicationFiled: November 30, 2021Publication date: February 8, 2024Applicants: SUZANO, S.A., UNIVERSIDADE FEDERAL DE UBERLANDIA - UFUInventors: Miria Hespanhol Miranda REIS, Humberto Molinar HENRIQUE, Antonio Carlos Silva DOS SANTOS, Vicelma Luiz CARDOSO
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Patent number: 11879213Abstract: The present invention relates to a high-strength fibre composition comprising fibres up to 7 mm long with a viscosity of between 10 and 20 cP. The fibres present in said composition are distributed according to the length thereof, thereby guaranteeing high strength. The fibre composition according to the invention can also be redispersible. The use of the fibre composition according to the invention and an article comprising said composition are also disclosed.Type: GrantFiled: December 10, 2019Date of Patent: January 23, 2024Assignee: SUZANO S.A.Inventors: Elenice Pereira Maia, Fábio Carucci Figliolino
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Patent number: 11827860Abstract: The present invention aims to provide an integrated process for the pre-treatment of biomass and its use as a feedstock in a process for the production of biochemicals and biofuels, said integrated process preferably allowing the obtaining of quality bio-oil from a biomass such as wood, forest residues, and residues from the sugar-alcohol and energy cane industry.Type: GrantFiled: May 26, 2017Date of Patent: November 28, 2023Assignee: Suzano S.A.Inventors: Danilo Ribeiro De Lima, Matheus Antunes Guimaraes, Barry Freel, Geoffrey D. Hopkins
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Publication number: 20230340333Abstract: The present invention relates the use of a microfibrillated cellulose as a suspension stabilizer agent, a network structuring agent, or a network structuring additive in the manufacture of a liquid composition having a particulate system. Preferably, the microfibrillated cellulose is present from 0.5% to 5.0% in a stabilized liquid composition. The stabilized liquid composition also has a particulate system, having a plurality of particles, a plurality of capsules or mixtures thereof.Type: ApplicationFiled: May 11, 2021Publication date: October 26, 2023Applicant: SUZANO S.A.Inventors: Estevão Frigini MAI, Germano Andrade SIQUEIRA, Matheus Antunes GUIMARÃES, Richieli Teles VIEIRA
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Publication number: 20230312886Abstract: The present disclosure relates to a barrier composition comprising a modified or unmodified starch, a plasticizer, and an MFC, and to a method for producing the barrier composition and the use thereof, such as in a multi-layer structure comprising the barrier composition and a carrier layer. Methods for producing a multi-layer structure comprising a barrier composition are also disclosed, and can be applied in order to obtain an article that comprises the multi-layer structure.Type: ApplicationFiled: July 29, 2021Publication date: October 5, 2023Applicants: SUZANO S.A, FUNDAÇÃO UNIVERSIDADE FEDERAL DE SÃO CARLOS - UFSCARInventors: Germano Andrade SIQUEIRA, Richieli Teles VIEIRA, Vitor Hugo DE LIMA, Alessandra De Almeida LUCAS, Francys Kley Vieira MOREIRA, Gustavo Adolfo Duarte URUEÑA
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Publication number: 20230303437Abstract: The present disclosure relates to the field of building materials. In particular, the present disclosure relates to fiber cement production methods and processes that exhibit high solid retention capacity in the dewatering step, providing increased productivity and potentially other process gains related to the lower concentration of solids and additives in the process water.Type: ApplicationFiled: August 17, 2021Publication date: September 28, 2023Applicants: SUZANO, S.A., UNIVERSIDADE DE SÃO PAULO-USPInventors: Germano SIQUEIRA, Vanderley Moacyr JOHN, Beatriz Rodrigues DA SILVA, Fábio Alonso CARDOSO, Holmer Savastano JUNIOR
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Publication number: 20230272581Abstract: The present invention is related to a method for: reducing metals content in a Kraft pulping process comprising adding magnesium to a black liquor that is returned to the pulping operation; reducing aluminum content in a pulping process by adding magnesium to the black liquor to provide a green liquor having a specific molar ratio of magnesium:aluminum; producing or treating a green liquor having a specific molar ratio of magnesium:aluminum by adding magnesium to the black, weak black, strong black liqueurs; and producing hydrotalcite by the addition of at least 0.04-5.0 mols of magnesium:aluminum present at the weak black, strong black liqueurs, or a combination thereof. It is also provided a pulp mill comprising a digester (1), a washer (2), an optionally pulp bleaching, a weak black liquor concentrator (4), among other parts.Type: ApplicationFiled: May 24, 2021Publication date: August 31, 2023Applicant: SUZANO S.A.Inventors: Heloisa Ogushi Romeiro RAMIRES, Thiago Silva Pinto DE FARIA
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Publication number: 20230265610Abstract: The present invention is related to a method to produce a treated condensate substantially free of organic matter by treating the condensate with at least one of physical, chemical, chemical-physical treatment or combinations thereof. Further, it is also provided a method to treat a condensate in a pulp processing fiber line utilizing multiple washing stages having at least a treated condensate circulating in a closed loop, prior to feeding the condensate into the fiber line, the method comprising the steps of: a) identifying the colloidal organic compounds in the condensate; b) subjecting the condensate to at least one chemical, physical, chemical-physical treatment or a combination thereof; and c) reducing contamination of the condensate, feeding it to the last washer stage, or to some other stage of the pulping.Type: ApplicationFiled: June 17, 2021Publication date: August 24, 2023Applicants: SUZANO S.A., NIKEDE COMERCIO E REPRESENTAÇÕES LTDA.Inventors: Dimas DE MORAIS, Otávio Mambrim FILHO
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Publication number: 20230175203Abstract: The present invention relates to a process to produce highly microfibrillated cellulose (MFC) and nanofibrillated cellulose (NFC). The invention also refers to a microfibrillated/nanofibrillated cellulose produced according to such process. The microfib-rillated/nanofibrillated cellulose is obtained by subjecting a cellulose fiber in a slurry of cellulose pulp to multiple mechanical impacts. The cycle may be repeated several times. Non-cutting bars disposed in a ring formation is the preferred configuration. At least two rings concentrically arranged facing each other in high rotation transmit the kinetic energy to the fibers to provide the highly defibrillated microfibrillated/nanofibrillated cellulose.Type: ApplicationFiled: May 11, 2021Publication date: June 8, 2023Applicant: SUZANO S.A.Inventors: Estevão Frigini MAI, Matheus Antunes GUIMARÄES, Bibiana Ribeiro RUBINI
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Patent number: 11598049Abstract: The present invention refers to the separation of cellulose pulp into distinct fractions with different draining and morphological characteristics, as well as the use of part of these fractions for the production of nanocellulose. The process in reference combines the unitary operations of fiber separation, thickening to a certain consistency, draining and drying of the cellulosic pulp with the high drainage ability and production of nanocellulose from high primary fines content pulp. The process may consider any cellulosic pulp fiber derived from short or long fiber woods such as Eucalyptus, Corymbia, Birch, Aspen, Pinus, recycled fibers, etc., their residues such as bark, sawdust, etc.Type: GrantFiled: November 23, 2017Date of Patent: March 7, 2023Assignee: SUZANO S.A.Inventors: Heloisa Ogushi Romeiro Ramires, Braz José Demuner
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Patent number: 11555103Abstract: An olefinic polymer composition comprising at least one polyolefin, as well as a broadleaf tree lignin with pH below 7. The invention further relates to objects obtained from such a composition, and the use of broadleaf tree lignin with pH below 7 in the preparation of an olefinic polymer composition.Type: GrantFiled: August 17, 2017Date of Patent: January 17, 2023Assignee: Suzano S.A.Inventors: Talyta Torrezan, Henrique Finocchio
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Publication number: 20220074080Abstract: Applied in the field of manufacturing textile products, the present invention provides compositions of synthetic polymeric fibers containing from 0.25% to 4.00% of lignin originated from the Kraft process, which are incorporated into the polymer through a subsequent extrusion process with the spinning process, by the use of a double-screw extruder coupled to a spinnerette. The obtained fibers are used in the production of textile products with anti-UV properties due to the presence of lignin, and with greater tenacity, resistance to bursting and antioxidant activity of the knit.Type: ApplicationFiled: December 27, 2019Publication date: March 10, 2022Applicant: SUZANO S.A.Inventors: Talyta TORREZAN, Rafael Bastos ROCHA, Nathan Riany Valerio ALBINO
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Patent number: 11248344Abstract: The present invention relates to an enhanced process for the production of cellulose pulps with increased quality and applicability of said pulps, especially their physical resistance properties and degree of resistance to drainage, through an enzymatic treatment step comprised in the production process of said cellulose pulp, concomitantly with the polymer dosage based on carbohydrates.Type: GrantFiled: December 27, 2016Date of Patent: February 15, 2022Assignee: Suzano S.A.Inventors: Otávio Mambrim Filho, Leonardo Alves De Melo
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Publication number: 20210395949Abstract: The present invention relates to a process for producing a nanocellulosic material based on the use of fractioning of cellulosic pulp stream from pre-treatment or mechanical defibrillation (partially refined/defibrillated pulp) in combination with stages of mechanical defibrillation, in which both the accept fraction and the reject fraction can be conveyed to stages of consistency adjustments so as to precede another distinct defibrillation stage. For example, if the accept is conveyed to a consistency adjustment preceding a second defibrillation stage while the reject is conveyed to the other independent stage of consistency adjustment to return to the first stage of mechanical defibrillation.Type: ApplicationFiled: July 17, 2019Publication date: December 23, 2021Applicant: Suzano S.A.Inventors: Marcos Henrique Luciano SILVEIRA, Germano Andrade SIQUEIRA, Bibiana Ribeiro RUBINI, Heloisa Ogushi Romeiro RAMIRES
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Publication number: 20210348332Abstract: The present invention relates a process to produce microfibrillated cellulose and a microfibrillated cellulose produced according to such process. The fibrillated microfibrillated cellulose is obtained subjecting a cellulose fiber in a slurry of cellulose pulp to multiple mechanical impacts. The cycle may be repeated several times. Non-cutting bars disposed in a ring formation is the preferred method. Two rings concentrically arranged facing each other in high rotation transmit the kinetic energy to the fibers to provide the highly defibrillated microfibrillated cellulose.Type: ApplicationFiled: August 7, 2020Publication date: November 11, 2021Applicant: Suzano S.A.Inventors: Estevão Frigini Mai, Matheus Antunes Guimarães, Bibiana Ribeiro Rubini
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Patent number: 11047092Abstract: The present invention relates to an improved process for producing chemical cellulose pulp wherein biopolymers are added immediately before, during or after a bleaching step, depending on pulp characteristics and on process conditions used. The biopolymers according to the present invention are starches chemically modified by an etherification reaction. This treatment results in a differentiated pulp having improved physical, chemical and mechanical properties when compared with cellulose pulps obtained by traditional processes. The use of said biopolymer alters the relations between important pulp properties rendering their application in papermaking process advantageous. This differentiation increases the possibilities of use and also of new applications, including for the substitution of pulps produced from other cellulose sources.Type: GrantFiled: February 4, 2020Date of Patent: June 29, 2021Assignee: Suzano S.A.Inventors: Romolo Ranocchia, Ademilson Massoquete, Danilo Oyakawa
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Patent number: 10590608Abstract: The present invention relates to an improved process for producing chemical cellulose pulp wherein biopolymers are added immediately before, during or after a bleaching step, depending on pulp characteristics and on process conditions used. The biopolymers according to the present invention are starches chemically modified by an etherification reaction. This treatment results in a differentiated pulp having improved physical, chemical and mechanical properties when compared with cellulose pulps obtained by traditional processes. The use of said biopolymer alters the relations between important pulp properties rendering their application in papermaking process advantageous. This differentiation increases the possibilities of use and also of new applications, including for the substitution of pulps produced from other cellulose sources.Type: GrantFiled: November 16, 2017Date of Patent: March 17, 2020Assignee: Suzano S.A.Inventors: Romolo Ranocchia, Ademilson Massoquete, Danilo Oyakawa
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Patent number: 10519597Abstract: The present invention refers to a process for producing cellulose of market eucalyptus fibers having distinct features through the use of at least one enzymatic treatment with hydrolytic enzymes, such as for example, xylanases, cellulases or mixtures thereof, in association to at least one acidic treatment step. These treatments may be applied into different steps of the fibers process producing, wherein all of them happen before drying.Type: GrantFiled: October 16, 2009Date of Patent: December 31, 2019Assignee: Suzano S.A.Inventors: Braz Jose Demuner, Otavio Mambrim Filho