-
1.
公开(公告)号:US20200157250A1
公开(公告)日:2020-05-21
申请号:US16621833
申请日:2018-06-18
申请人: FINECELL SWEDEN AB
发明人: Dongfang LI , Jonatan HENSCHEN , Monica EK
摘要: The present invention relates to a method for manufacturing hydrophobized nanocellulose comprising the steps of: a) providing a cellulose-containing material wherein the cellulose-containing material contains less than 20 wt. % water, b) contacting the cellulose-containing material with oxalic acid dihydrate, and heating above the melting point of the oxalic acid dihydrate, to obtain cellulose oxalates, c) washing the mixture, d) preparing a suspension comprising the material from step c) and e) recovering hydrophobized nanocellulose from the suspension. The present invention relates also to a method of manufacturing hydrophobized nanocellulose intermediate which comprises the above described steps a)-c). The methods disclosed in the present invention are quick, inexpensive, simple, and direct. Pulp can be used as raw material.
-
2.
公开(公告)号:US11174324B2
公开(公告)日:2021-11-16
申请号:US16621833
申请日:2018-06-18
申请人: FINECELL SWEDEN AB
发明人: Dongfang Li , Jonatan Henschen , Monica Ek
摘要: The present invention relates to a method for manufacturing hydrophobized nanocellulose comprising the steps of: a) providing a cellulose-containing material wherein the cellulose-containing material contains less than 20 wt. % water, b) contacting the cellulose-containing material with oxalic acid dihydrate, and heating above the melting point of the oxalic acid dihydrate, to obtain cellulose oxalates, c) washing the mixture, d) preparing a suspension comprising the material from step c) and e) recovering hydrophobized nanocellulose from the suspension. The present invention relates also to a method of manufacturing hydrophobized nanocellulose intermediate which comprises the above described steps a)-c). The methods disclosed in the present invention are quick, inexpensive, simple, and direct. Pulp can be used as raw material.
-
公开(公告)号:US11084885B2
公开(公告)日:2021-08-10
申请号:US16003176
申请日:2018-06-08
申请人: FineCell Sweden AB
发明人: Dongfang Li , Jonatan Henschen , Monica Ek
IPC分类号: C08B3/24 , C08L1/10 , D21C9/00 , D21H11/18 , C08L1/12 , C08B3/06 , C08K5/11 , C08B3/00 , B29C48/00
摘要: The present invention relates to a method for manufacturing nanocellulose comprising the steps of: a) providing a cellulose-containing material wherein the cellulose-containing material contains less than 20 wt. % water, b) contacting the cellulose-containing material with oxalic acid dihydrate, and heating above the melting point of the oxalic acid dihydrate, to obtain cellulose oxalates, c) washing the mixture, d) preparing a suspension comprising the washed material from step c) and e) recovering nanocellulose from the suspension. The present invention relates also to a method of manufacturing nanocellulose intermediate which comprises the above described steps a)-c). The methods disclosed in the present invention are quick, simple, and direct. Pulp can be used as raw material. A considerable amount of free carboxyl groups are introduced. A high yield can be obtained. The methods are inexpensive.
-
公开(公告)号:US20210332153A1
公开(公告)日:2021-10-28
申请号:US17368920
申请日:2021-07-07
申请人: FineCell Sweden AB
发明人: Dongfang LI , Jonatan HENSCHEN , Monica EK
摘要: The present invention relates to a method for manufacturing nanocellulose comprising the steps of: a) providing a cellulose-containing material wherein the cellulose-containing material contains less than 20 wt. % water, b) contacting the cellulose-containing material with oxalic acid dihydrate, and heating above the melting point of the oxalic acid dihydrate, to obtain cellulose oxalates, c) washing the mixture, d) preparing a suspension comprising the washed material from step c) and e) recovering nanocellulose from the suspension. The present invention relates also to a method of manufacturing nanocellulose intermediate which comprises the above described steps a)-c). The methods disclosed in the present invention are quick, simple, and direct. Pulp can be used as raw material. A considerable amount of free carboxyl groups are introduced. A high yield can be obtained. The methods are inexpensive.
-
公开(公告)号:US20180291119A1
公开(公告)日:2018-10-11
申请号:US16003176
申请日:2018-06-08
申请人: FineCell Sweden AB
发明人: Dongfang LI , Jonatan HENSCHEN , Monica EK
摘要: The present invention relates to a method for manufacturing nanocellulose comprising the steps of: a) providing a cellulose-containing material wherein the cellulose-containing material contains less than 20 wt. % water, b) contacting the cellulose-containing material with oxalic acid dihydrate, and heating above the melting point of the oxalic acid dihydrate, to obtain cellulose oxalates, c) washing the mixture, d) preparing a suspension comprising the washed material from step c) and e) recovering nanocellulose from the suspension. The present invention relates also to a method of manufacturing nanocellulose intermediate which comprises the above described steps a)-c). The methods disclosed in the present invention are quick, simple, and direct. Pulp can be used as raw material. A considerable amount of free carboxyl groups are introduced. A high yield can be obtained. The methods are inexpensive.
-
-
-
-