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1. WO2022011316 - MODIFIED WOOD AND TRANSPARENT WOOD COMPOSITES, AND SYSTEMS AND METHODS FOR FORMING AND USE THEREOF

Publication Number WO/2022/011316
Publication Date 13.01.2022
International Application No. PCT/US2021/041181
International Filing Date 09.07.2021
IPC
B27K 3/02 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
KPROCESSES, 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
3Impregnating wood, e.g. for protection 
02Processes; Apparatus
B27K 3/15 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
27WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
KPROCESSES, 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
3Impregnating wood, e.g. for protection 
02Processes; Apparatus
15Impregnating involving polymerisation
C08J 9/26 2006.1
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H142
9Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
26by elimination of a solid phase from a macromolecular composition or article, e.g. leaching out
Applicants
  • UNIVERSITY OF MARYLAND, COLLEGE PARK [US]/[US] (AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BE, BF, BG, BH, BJ, BN, BR, BW, BY, BZ, CA, CF, CG, CH, CI, CL, CM, CN, CO, CR, CU, CY, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, FR, GA, GB, GD, GE, GH, GM, GN, GQ, GR, GT, GW, HN, HR, HU, ID, IE, IL, IN, IR, IS, IT, JO, JP, KE, KG, KH, KM, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MC, MD, ME, MG, MK, ML, MN, MR, MT, MW, MX, MY, MZ, NA, NE, NG, NI, NL, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SI, SK, SL, SM, SN, ST, SV, SY, SZ, TD, TG, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, UZ, VC, VN, WS, ZA, ZM, ZW)
  • HU, Liangbing [CN]/[US] (US)
  • MI, Ruiyu [CN]/[CN] (US)
  • XIA, Qinqin [CN]/[CN] (US)
  • CHEN, Chaoji [CN]/[CN] (US)
  • LI, Tian [CN]/[US] (US)
Inventors
  • HU, Liangbing
  • MI, Ruiyu
  • XIA, Qinqin
  • CHEN, Chaoji
  • LI, Tian
Agents
  • ROSENBERGER, Frederick
  • FINCHAM, Carson
  • FINCHAM, Magdalena
Priority Data
63/050,48410.07.2020US
63/134,93607.01.2021US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) MODIFIED WOOD AND TRANSPARENT WOOD COMPOSITES, AND SYSTEMS AND METHODS FOR FORMING AND USE THEREOF
(FR) BOIS MODIFIÉ ET COMPOSITES DE BOIS TRANSPARENTS, ET SYSTÈMES ET PROCÉDÉS DE FORMATION ET D'UTILISATION DE CEUX-CI
Abstract
(EN) In some embodiments, a material comprises a contiguous block of chemically-modified wood infiltrated with an index-matching polymer. The contiguous block has a first section that is substantially transparent to light and a second section that is translucent or opaque. The first section can have a lower lignin content than the second section. Alternatively, the first section can have a chromophore state altered from that of the wood in its natural state, and the lignin in the second section can retain a chromophore state of the wood in its natural state. In some embodiments, a material comprises a section of wood chemically-modified such that chromophores of lignin within the wood in its natural state are altered or removed, and the section retains at least 70% of the lignin of the wood in its natural state. Methods for forming such materials are also disclosed.
(FR) Dans certains modes de réalisation, un matériau comprend un bloc contigu de bois modifié chimiquement infiltré avec un polymère d'adaptation d'indice. Le bloc contigu a une première section qui est sensiblement transparente à la lumière et une seconde section qui est translucide ou opaque. La première section peut présenter une teneur en lignine inférieure à celle de la seconde section. En variante, la première section peut avoir un état chromophore modifié par rapport à celui du bois dans son état naturel, et la lignine dans la seconde section peut conserver un état chromophore du bois dans son état naturel. Dans certains modes de réalisation, un matériau comprend une section de bois modifiée chimiquement de sorte que des chromophores de lignine à l'intérieur du bois dans son état naturel soient modifiés ou éliminés, et la section conserve au moins 70 % de la lignine du bois à l'état naturel. La présente invention divulgue également des procédés de formation desdits matériaux.
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