Aqueous lignin dispersions and methods of preparing the same

Niko Meri (Inventor), Kalle Lintinen (Inventor), Rahul Prasad Bangalore Ashok (Inventor), Timo Leskinen (Inventor), Yao Xiao (Inventor), Monika Österberg (Inventor), Mauri Kostiainen (Inventor), Pekka Oinas (Inventor), Lauri Rautkari (Inventor), Akio Yamamoto (Inventor), Saara Hautamäki (Inventor)

Research output: PatentPatent


Method of forming colloidal lignin particles, comprising the step of dissolving lignin in a mixture of organic solvents, feeding of the said solution into water, and forming a colloidal dispersion of lignin. The used solvents are recovered with methods such as distillation and reused in the process. Water is removed from the colloidal dispersion by ultrafiltration and reused in the process. The concentrated colloidal dispersion is dried by spray drying. The invention can be used in applications where the colloidal nature of lignin will afford an advantage over bulk lignin.
Original languageEnglish
Patent numberWO2019081819
IPCB01J 13/ 00 A I
Priority date26/10/17
Filing date26/10/18
Publication statusPublished - 2 May 2019
MoE publication typeNot Eligible


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