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1. (WO2017168051) METHOD OF PRODUCING HEMICELLULOSE EXTRACTS
Latest bibliographic data on file with the International Bureau    Submit observation

Pub. No.: WO/2017/168051 International Application No.: PCT/FI2017/050222
Publication Date: 05.10.2017 International Filing Date: 29.03.2017
IPC:
C08L 5/14 (2006.01)
Applicants: CH-BIOFORCE OY[FI/FI]; Ahventie 4 A 21-22 02170 Espoo, FI
Inventors: VÄHÄSALO, Lari; FI
LAX, Nicholas; FI
VON SCHOULTZ, Sebastian; FI
Agent: SEPPO LAINE OY; Itämerenkatu 3 A 00180 Helsinki, FI
Priority Data:
2016526429.03.2016FI
Title (EN) METHOD OF PRODUCING HEMICELLULOSE EXTRACTS
(FR) PROCÉDÉ DE PRODUCTION D'EXTRAITS D'HÉMICELLULOSE
Abstract: front page image
(EN) This invention describes a method for the purification of a hemicellulose extract produced for example through hot water extraction. Such extracts often contain large amounts of colloidal material which primarily consists of lignin and other phenolic compounds. These colloidal particles clog equipment such as ultrafiltration membranes, which deem the use of such equipment almost impossible. The unwanted material is very tacky at temperatures between 70 and 120°C which makes it possible to adsorb it onto a variety of materials. Further, by using an adsorbing material that is wholly or partly contaminated with chemically alike material the purification process is greatly enhanced.
(FR) La présente invention décrit un procédé de purification d'un extrait d'hémicellulose produit par exemple par extraction à l'eau chaude. De tels extraits contiennent souvent de grandes quantités de matériaux colloïdaux qui sont principalement constitués de lignine et d'autres composés phénoliques. Ces particules colloïdales bouchent l'équipement tel que les membranes d'ultrafiltration, qui rend l'utilisation d'un tel équipement pratiquement impossible. Le matériau indésirable est très collant aux températures comprises entre 70 et 120 °C, ce qui permet son adsorption sur une variété de matériaux. En outre, en utilisant un matériau adsorbant qui est entièrement ou partiellement contaminé par un matériau chimiquement semblable, le procédé de purification est amélioré considérablement.
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, 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)