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公开(公告)号：US20230331929A1
公开(公告)日：2023-10-19
申请号：US18020642
申请日：2021-08-16
Applicant: Aalto University Foundation sr
Inventor： Kalle Lintinen , Mauri Kostiainen , Alexander Fusi
CPC classification number: C08H6/00 , C08J3/07 , C08J3/24 , C08J7/08 , C08K5/07 , C09J197/005 , C08J2397/00
Abstract: Method of forming functionalized colloidal lignin particles, comprising the step of providing lignin in a dissolved form, aldehyde functionalizing lignin, forming a colloidal dispersion of lignin, partially removing organic solvents and heat-curing the dispersion. The concentrated colloidal dispersion is dried by spray drying. The invention can be used in applications where the functioned and colloidal nature of lignin will afford an advantage over bulk lignin.
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公开(公告)号：US20220010077A1
公开(公告)日：2022-01-13
申请号：US17298622
申请日：2019-11-29
Applicant: Aalto University Foundation sr
Inventor： Monika Österberg , Mika Sipponen , Mauri Kostiainen , Laura Äkräs , Guillaume Rivière , Xue Zhang
Abstract: 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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公开(公告)号：US11524974B2
公开(公告)日：2022-12-13
申请号：US16758869
申请日：2018-10-26
Applicant: Aalto University Foundation sr
Inventor： Kalle Lintinen , Rahul Prasad Bangalore Ashok , Timo Leskinen , Yao Xiao , Monika Österberg , Mauri Kostiainen , Pekka Oinas , Lauri Rautkari , Akio Yamamoto , Saara Hautamäki , Niko Meri
Abstract: 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 acolloidal 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.
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公开(公告)号：US20200255466A1
公开(公告)日：2020-08-13
申请号：US16758869
申请日：2018-10-26
Applicant: Aalto University Foundation sr
Inventor： Kalle Lintinen , Rahul Prasad Bangalore Ashok , Timo Leskinen , Yao Xiao , Monika Österberg , Mauri Kostiainen , Pekka Oinas , Lauri Rautkari , Akio Yamamoto , Saara Hautamäki , Niko Meri
Abstract: 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 acolloidal 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.
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