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US 9,809,655 B2Granted
Method of modifying nanofibrillar cellulose composition
AssigneeUpm-Kymmene Corporation
InventorsAntti Laukkanen, Markus Nuopponen, Martina Lille
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Abstract
The invention relates to a method for modifying nanofibrillar cellulose composition, comprising—preparing fibrous dispersion of ionically charged nanofibrillar cellulose (NFC), and—applying heat treatment at a temperature of at least 90° C. to the fibrous dispersion until the viscosity of NFC starts to decrease. The viscosity of the heat-treated NFC is reversible by applying shear forces to the NFC.
Claims21
A method for modifying nanofibrillar cellulose composition, comprising
- preparing fibrous dispersion of ionically charged nanofibrillar cellulose (NFC),
- applying heat treatment at a temperature of at least 90° C. to the fibrous dispersion until first sign of negative growth of the viscosity value of the nanofibrillar cellulose.
Dependencies are inferred from the claim text.