EP 3894445 A1 20211020 - XYLAN-CONTAINING COMPOSITION AND METHOD FOR PRODUCING A XYLAN-CONTAINING COMPOSITION
Title (en)
XYLAN-CONTAINING COMPOSITION AND METHOD FOR PRODUCING A XYLAN-CONTAINING COMPOSITION
Title (de)
XYLAN AUFWEISENDE ZUSAMMENSETZUNG UND VERFAHREN ZUR HERSTELLUNG EINER XYLAN AUFWEISENDEN ZUSAMMENSETZUNG
Title (fr)
COMPOSITION PRÉSENTANT UN XYLANE ET PROCÉDÉ DE PRÉPARATION D'UNE COMPOSITION PRÉSENTANT UN XYLANE
Publication
Application
Priority
- EP 18211478 A 20181211
- EP 2019077504 W 20191010
Abstract (en)
[origin: WO2020119979A1] The invention relates to a xylan-containing composition (1) and to a method (100) for producing a xylan-containing composition (1), wherein acid (4) is added to an aqueous alkaline solution (2) which has hemicelluloses (3), and a xylan-containing precipitate (6) is separated from the resulting precipitation suspension (5). The aim of the invention is to increase the yields of the aforementioned method. This is achieved in that acid (4) is continuously added to the aqueous alkaline solution (2) until a pH value of 4 in the precipitation suspension (5) is undershot and the temperature of the precipitation suspension (5) does not exceed a precipitation temperature during the separation process, the precipitation temperature equaling at least 40 °C. The invention additionally relates to a cellulose or viscose method (200) comprising such a method (100).
IPC 8 full level
C08B 37/00 (2006.01); C08B 37/14 (2006.01)
CPC (source: EP)
C08B 37/0057 (2013.01); C08L 5/00 (2013.01); C08L 5/14 (2013.01)
Citation (search report)
See references of WO 2020119979A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3666798 A1 20200617; CN 113166278 A 20210723; EP 3894445 A1 20211020; TW 202031689 A 20200901; WO 2020119979 A1 20200618
DOCDB simple family (application)
EP 18211478 A 20181211; CN 201980082572 A 20191010; EP 19783334 A 20191010; EP 2019077504 W 20191010; TW 108138825 A 20191028