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公开(公告)号：WO2022136740A1
公开(公告)日：2022-06-30
申请号：PCT/FI2021/050905
申请日：2021-12-21
发明人： ZOU, Tao , ÖSTERBERG, Monika , SIPPONEN, Mika , HENN, Alexander
摘要： The invention describes a method of forming aqueous lignin-epoxy hybrid nanoparticles with switchable surface characteristics. The invention is applicable to production of technical adhesives and covalent surface modification of lignin nanoparticles under harsh reaction conditions. Further, in terms of the covalent functionalization of lignin nanoparticles (LNPs), this invention presents the covalent cationization of LNPs by means of attached quaternary ammonium groups.
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2.发明申请
公开(公告)号：WO2020109671A1
公开(公告)日：2020-06-04
申请号：PCT/FI2019/050858
申请日：2019-11-29
发明人： ÖSTERBERG, Monika , SIPPONEN, Mika , KOSTIAINEN, Mauri , ÄKRÄS, Laura , RIVIÈRE, Guillaume , ZHANG, Xue
摘要： Method of preparing a dispersion of colloidal lignin particles by providing a solution of lignin in a mixture of an organic solvent for lignin and a non-solvent for lignin having a ratio of non-solvent to solvent; and increasing the ratio of the non-solvent to the solvent to produce an aqueous dispersion of colloidal lignin particles. The dispersions are stable and the colloidal lignin particles are useful for many applications such as rheology modifiers in three-dimensional printing of hydrogels, or in purification systems such as filters, and packed columns, and as flocculants.
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