Manufacture of nanocellulose and intermediates thereof

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 12030960
APP PUB NO 20210332153A1
SERIAL NO

17368920

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Abstract

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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.

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Patent Owner(s)

Patent OwnerAddress
FINECELLOX ABNACKROSVAGEN 1 SOLNA 169 37

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ek, Monica Hägersten, SE 6 2
Henschen, Jonatan Stockholm, SE 3 1
Li, Dongfang Bromma, SE 24 84

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