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1. (WO2015103197) SULFITE-BASED PROCESSES FOR PRODUCING NANOCELLULOSE, AND COMPOSITIONS AND PRODUCTS PRODUCED THEREFROM
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2015/103197 International Application No.: PCT/US2014/072661
Publication Date: 09.07.2015 International Filing Date: 30.12.2014
IPC:
C08B 15/00 (2006.01) ,C08B 15/08 (2006.01) ,C08B 1/00 (2006.01) ,C08H 8/00 (2010.01) ,B82B 3/00 (2006.01)
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
B
POLYSACCHARIDES; DERIVATIVES THEREOF
15
Preparation of other cellulose derivatives or modified cellulose
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
B
POLYSACCHARIDES; DERIVATIVES THEREOF
15
Preparation of other cellulose derivatives or modified cellulose
08
Fractionation of cellulose, e.g. separation of cellulose crystallites
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
B
POLYSACCHARIDES; DERIVATIVES THEREOF
1
Preparatory treatment of cellulose for making derivatives thereof
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
H
DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS
8
Macromolecular compounds derived from lignocellulosic materials
B PERFORMING OPERATIONS; TRANSPORTING
82
NANO-TECHNOLOGY
B
NANO-STRUCTURES FORMED BY MANIPULATION OF INDIVIDUAL ATOMS, MOLECULES, OR LIMITED COLLECTIONS OF ATOMS OR MOLECULES AS DISCRETE UNITS; MANUFACTURE OR TREATMENT THEREOF
3
Manufacture or treatment of nano-structures by manipulation of individual atoms or molecules, or limited collections of atoms or molecules as discrete units
Applicants:
API INTELLECTUAL PROPERTY HOLDINGS, LLC [US/US]; Attn: Ryan O'Connor, CIPO 750 Piedmont Ave. NE Atlanta, Georgia 30308, US
Inventors:
NELSON, Kimberly; US
RETSINA, Theodora; US
PYLKKANEN, Vesa; US
O'CONNOR, Ryan; US
Agent:
O'CONNOR, Ryan; US
Priority Data:
14/584,59329.12.2014US
61/921,53530.12.2013US
Title (EN) SULFITE-BASED PROCESSES FOR PRODUCING NANOCELLULOSE, AND COMPOSITIONS AND PRODUCTS PRODUCED THEREFROM
(FR) PROCESSUS À BASE DE SULFITES POUR PRODUIRE DE LA NANOCELLULOSE, ET COMPOSITIONS ET PRODUITS AINSI OBTENUS
Abstract:
(EN) Processes disclosed are capable of converting biomass into high-crystallinity nanocellulose with low mechanical energy input. In some variations, the process includes fractionating biomass with sulfur dioxide or a sulfite compound and water, to generate cellulose-rich solids and a liquid containing hemicellulose and lignin; and mechanically treating the cellulose-rich solids to form nanofibrils and/or nanocrystals. The total mechanical energy may be less than 500 kilowatt-hours per ton. The crystallinity of the nanocellulose material may be 80% or higher, translating into good reinforcing properties for composites. The nanocellulose material may include nanofibrillated cellulose, nanocrystalline cellulose, or both. In some embodiments, the nanocellulose material is hydrophobic via deposition of some lignin onto the cellulose surface. Optionally, sugars derived from amorphous cellulose and hemicellulose may be separately fermented, such as to monomers for various polymers. These polymers may be combined with the nanocellulose to form completely renewable composites.
(FR) Les processus selon l'invention permettent de convertir la biomasse en une nanocellulose à cristallinité élevée avec un faible apport d'énergie mécanique. Dans certaines variantes, le processus consiste à fractionner la biomasse avec du dioxyde de soufre ou un composé de sulfite et de l'eau pour générer des solides riches en cellulose et un liquide contenant de l'hémicellulose et de la lignine; et à traiter mécaniquement les solides riches en cellulose pour former des nanofibrilles et/ou des nanocristaux. L'énergie mécanique totale peut être inférieure à 500 kilowatts-heure par tonne. La cristallinité de la matière nanocellulosique peut être de 80 % ou plus, ce qui s'exprime par de bonnes propriétés de renforcement pour composites. La matière nanocellulosique peut comprendre de la cellulose nanofibrillée, de la cellulose nanocristalline, ou les deux. Dans certains modes de réalisation, la matière nanocellulosique est hydrophobe par dépôt d'une partie de la lignine sur la surface de la cellulose. Facultativement, des sucres dérivés de la cellulose amorphe et de l'hémicellulose peuvent être fermentés séparément, notamment, les monomères destinés à divers polymères. Ces polymères peuvent être combinés à la nanocellulose pour former des composites entièrement renouvelables.
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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, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, 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: English (EN)
Filing Language: English (EN)
Also published as:
EP3089998CA2972810