发明名称 |
METHOD FOR PRODUCING NANOFIBRILLAR CELLULOSE |
摘要 |
In a method for preparing nanofibrillar cellulose, fibrous dispersion of ionically charged cellulose is repeatedly passed through a mechanical process of disrupting fibers into fibrils until the viscosity starts to decrease. The number average diameter of the nanofibrillar cellulose after the mechanical process is in the range of 2-10 nm, and the zero-shear viscosity is below 10 Pa·s, preferably below 1 Pa·s, when measured in the concentration of 0.5 wt-%. The nanofibrillated cellulose is low aspect ratio nanofibrillated cellulose (NFC-L). |
申请公布号 |
EP2914772(B1) |
申请公布日期 |
2016.10.12 |
申请号 |
EP20130792721 |
申请日期 |
2013.11.01 |
申请人 |
UPM-KYMMENE CORPORATION |
发明人 |
LAUKKANEN, ANTTI;NUOPPONEN, MARKUS |
分类号 |
D21H11/16;C08B15/04;D21B1/02;D21D1/20;D21F11/00;D21H11/20 |
主分类号 |
D21H11/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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