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1. (WO2019025651) METHOD FOR PRODUCING MAGNETIC CORK PARTICLES, PARTICLES THUS OBTAINED, AND USES THEREOF
Latest bibliographic data on file with the International BureauSubmit observation

Pub. No.: WO/2019/025651 International Application No.: PCT/ES2018/070519
Publication Date: 07.02.2019 International Filing Date: 23.07.2018
IPC:
B27K 3/00 (2006.01) ,B01J 2/00 (2006.01) ,B27K 3/26 (2006.01) ,B27K 7/00 (2006.01) ,B82Y 30/00 (2011.01)
B PERFORMING OPERATIONS; TRANSPORTING
27
WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
K
PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING OR BLEACHING OF WOOD, OR FOR TREATING OF WOOD WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
3
Impregnating wood, e.g. for protection 
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
J
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
2
Processes or devices for granulating materials, in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
B PERFORMING OPERATIONS; TRANSPORTING
27
WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
K
PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING OR BLEACHING OF WOOD, OR FOR TREATING OF WOOD WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
3
Impregnating wood, e.g. for protection 
16
Inorganic impregnating agents
26
Compounds of iron, aluminium, or chromium
B PERFORMING OPERATIONS; TRANSPORTING
27
WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
K
PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING OR BLEACHING OF WOOD, OR FOR TREATING OF WOOD WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
7
Chemical or physical treatment of cork
B PERFORMING OPERATIONS; TRANSPORTING
82
NANO-TECHNOLOGY
Y
SPECIFIC USES OR APPLICATIONS OF NANO-STRUCTURES; MEASUREMENT OR ANALYSIS OF NANO-STRUCTURES; MANUFACTURE  OR TREATMENT OF NANO-STRUCTURES
30
Nano-technology for materials or surface science, e.g. nano-composites
Applicants:
UNIVERSIDAD CARLOS III DE MADRID [ES/ES]; Av. Gregorio Peces Barba, 1 28919 LEGANES (Madrid), ES
INSTITUTO DE CIÊNCIA E INOVAÇAO EM ENGENHARIA MECÂNICA E ENGENHARIA INDUSTRIAL [PT/PT]; Rua Dr. Roberto Frias, 400 4200-465 PORTO, PT
UNIVERSIDADE DO PORTO [PT/PT]; Praça Gomes Teixeira, s/n 4099-002 PORTO, PT
UNIVERSIDAD PONTIFICIA COMILLAS [ES/ES]; C/ Alberto Aguilera 23 28015 MADRID, ES
Inventors:
ABENÓJAR BUENDÍA, Juana; ES
OLIVEIRA QUEIRÓS FERREIRA BARBOSA, Ana Sofía; PT
MARTÍNEZ CASANOVA, Miguel Angel; ES
CAMILO CARBAS, Ricardo Joâo; PT
VELASCO LÓPEZ, Francisco Javier; ES
MARTINS DA SILVA, Lucas Filipe; PT
DEL REAL ROMERO, Juan Carlos; ES
Agent:
CARPINTERO LOPEZ, Mario; ES
Priority Data:
P20173099331.07.2017ES
Title (EN) METHOD FOR PRODUCING MAGNETIC CORK PARTICLES, PARTICLES THUS OBTAINED, AND USES THEREOF
(ES) PROCEDIMIENTO PARA LA PRODUCCIÓN DE PARTÍCULAS DE CORCHO MAGNÉTICAS, PARTÍCULAS ASÍ OBTENIDAS Y USOS DE LAS MISMAS
(FR) PROCÉDÉ POUR LA PRODUCTION DE PARTICULES DE LIÈGE MAGNÉTIQUES, PARTICULES AINSI OBTENUES ET UTILISATIONS DE CELLES-CI
Abstract:
(EN) The invention relates to a method for producing magnetic cork particles, comprising the steps of: providing a composition comprising an alkaline solution and cork particles, with a size of between 1 nm and 2 mm, and stirring same; adding an acid solution containing Fe3+ and Fe2+ cations to the composition in order to magnetize the cork particles, and continuing to stir same; filtering the resulting solution in order to obtain a precipitate of magnetized cork particles; and washing the precipitate with water until the pH of the washed solution reaches a value of between 4 and 7, and leaving same to dry until stabilized magnetized cork particles are obtained. According to the invention, the cork particles are magnetized owing to the formation of a magnetite coating on the particles, the magnetite being adsorbed on the particle surface. The invention also relates to magnetized cork particles obtained using the above method and to the uses of said particles.
(ES) La presente invención se refiere a un procedimiento para producir partículas de corcho magnéticas que comprende las etapas de proporcionar una composición de una solución alcalina y partículas de corcho, con un tamaño comprendido entre 1nm y 2mm, y agitar; añadir una solución ácida que contenga cationes de Fe3+ y Fe2+ a la composición para provocar la magnetización de las partículas de corcho y mantener la agitación; filtrar la solución obtenida para obtener un precipitado de partículas de corcho magnetizadas y lavar el precipitado con agua hasta que la solución de lavado alcance un pH comprendido entre 4 y 7, y dejar secar hasta obtener partículas de corcho magnetizadas estabilizadas, en el que la magnetización de las partículas de corcho es debida a la formación de un revestimiento de magnetita sobre las partículas, adsorbiéndose la magnetita sobre la superficie de la partícula. También se refiere a partículas de corcho magnetizadas así obtenidas y sus usos.
(FR) La présente invention concerne un procédé de production de particules de liège magnétiques qui comprend les étapes suivantes: la formation d'une composition d'une solution alcaline et de particules de liège, d'une taille comprise entre 1 nm et 2mm, et l'agitation; l'ajout d'une solution acide qui contient des cations de Fe3+ et Fe2+ à la composition pour provoquer la magnétisation des particules de liège et le maintien de l'agitation; le filtrage de la solution obtenue pour obtenir un précipité de particules de liège magnétisées et le lavage à l'eau du précipité jusqu'à ce que la solution de lavage atteigne un pH compris entre 4 et 7, et le séchage jusqu'à l'obtention de particules de liège magnétisées stabilisées, la magnétisation des particules de liège étant due à la formation d'un revêtement de magnétite sur les particules, la magnétite étant adsorbée sur la surface de la particule. L'invention se rapporte également à des particules de liège magnétisées ainsi obtenues et à leur utilisation.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Spanish (ES)
Filing Language: Spanish (ES)