US 11,718,689 B2
Method for isolating cellulose- or chitin-nanocrystals by means of periodate oxidation
Kai Zhang, Bovenden (DE); and Peiwen Liu, Goettingen (DE)
Assigned to GEORG-AUGUST-UNIVERSITAET GOETTINGEN STIFTUNG OEFFENTLICHEN RECHTS, Goettingen (DE)
Filed by Georg-August-Universitaet Goettingen Stiftung Oeffentlichen Rechts, Goettingen (DE)
Filed on Dec. 21, 2020, as Appl. No. 17/128,397.
Application 17/128,397 is a continuation in part of application No. PCT/EP2019/068787, filed on Jul. 12, 2019.
Claims priority of application No. 10 2018 117 741.0 (DE), filed on Jul. 23, 2018.
Prior Publication US 2021/0108003 A1, Apr. 15, 2021
Int. Cl. C08B 37/08 (2006.01); C08B 15/02 (2006.01); C08B 15/08 (2006.01)
CPC C08B 37/003 (2013.01) [C08B 15/02 (2013.01); C08B 15/08 (2013.01)] 20 Claims
 
1. A method of isolating nanocrystals from a lignocellulose- or chitin-containing starting material, the method comprising
providing periodate anions in an amount of at least 5 mol per kg of the starting material; and
exposing the starting material to an oxidative effect of the periodate anions for a period of at least one day in an aqueous suspension, a pH-value of the aqueous suspension being adjusted to higher than pH 7.0.