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1. (WO2019002553) PROCESS FOR SEPARATING LIGNIN FROM LIGNOCELLULOSIC MATERIALS
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Pub. No.: WO/2019/002553 International Application No.: PCT/EP2018/067587
Publication Date: 03.01.2019 International Filing Date: 29.06.2018
IPC:
D21C 11/00 (2006.01) ,C07G 1/00 (2011.01) ,C08H 1/00 (2006.01) ,D21C 3/20 (2006.01)
D TEXTILES; PAPER
21
PAPER-MAKING; PRODUCTION OF CELLULOSE
C
PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE- CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
11
Regeneration of pulp liquors
C CHEMISTRY; METALLURGY
07
ORGANIC CHEMISTRY
G
COMPOUNDS OF UNKNOWN CONSTITUTION
1
Low-molecular-weight derivatives of lignin
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
H
DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS
1
Macromolecular products derived from proteins
D TEXTILES; PAPER
21
PAPER-MAKING; PRODUCTION OF CELLULOSE
C
PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE- CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
3
Pulping cellulose-containing materials
20
with organic solvents
Applicants:
FUNDACION TECNALIA RESEARCH & INNOVATION [ES/ES]; Parque Tecnológico de Miramón Mikeletegi Pasealekua, 2 20009 Donostia - San Sebastián, ES
Inventors:
OCHOA GÓMEZ, José Ramón; ES
BLANCO PÉREZ, Noelia; ES
LORENZO IBARRETA, Leire; ES
Agent:
ZBM PATENTS - ZEA, BARLOCCI & MARKVARDSEN; Pl. Catalunya, 1 2nd floor 08002 Barcelona, ES
Priority Data:
17382423.630.06.2017EP
Title (EN) PROCESS FOR SEPARATING LIGNIN FROM LIGNOCELLULOSIC MATERIALS
(FR) PROCÉDÉ DE SÉPARATION DE LIGNINE DE MATIÈRES LIGNOCELLULOSIQUES
Abstract:
(EN) The present invention provides a process for separating lignin from a lignocellulosic material in order to obtain cellulose free or substantially free of lignin, the process comprising the steps of (a) preparing a CO2-triggered switchable solvent by mixing water, a water-insoluble amine which is a secondary amine, a tertiary amine, or a combination thereof, and CO2; (b) mixing the lignocellulosic material with the CO2-triggered switchable solvent obtained in step (a), thereby the lignin is dissolved in the solvent and the cellulose is not dissolved; and (c) separating the cellulose.
(FR) La présente invention concerne un procédé de séparation de lignine d'une matière lignocellulosique afin d'obtenir de la cellulose exempte ou sensiblement exempte de lignine, le procédé comprenant les étapes suivantes : (a) la préparation d'un solvant commutable activé par CO2 en mélangeant de l'eau, une amine insoluble dans l'eau qui est une amine secondaire, une amine tertiaire, ou une combinaison de ces derniers constituants, et du CO2; (b) le mélange de la matière lignocellulosique avec le solvant commutable activé par CO2 obtenu à l'étape (a), la lignine étant ainsi dissoute dans le solvant et la cellulose n'étant pas dissoute; et (c) la séparation de la cellulose.
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 Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (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: English (EN)
Filing Language: English (EN)