发明名称 |
ADDITIVE FOR PAPERMAKING AND PAPER CONTAINING THE SAME |
摘要 |
<p>A papermaking additive comprising cellulose nanofibers whose aqueous solution at a concentration of 2% (w/v) has a B-type viscosity (60 rpm, 20°C) of 500 to 7000 mPa·s, preferably 500 to 2000 mPa·s is used to prepare a paper having improved air resistance and smoothness. This additive is prepared by oxidizing a cellulosic material with an oxidizing agent in the presence of (1) N-oxyl compound(s) and (2) bromide, iodide or a mixture thereof to prepare oxidized cellulose, and finely grinding the oxidized cellulose in a wet condition to convert the oxidized cellulose into nanofibers.</p> |
申请公布号 |
EP2267222(A1) |
申请公布日期 |
2010.12.29 |
申请号 |
EP20090728902 |
申请日期 |
2009.03.25 |
申请人 |
NIPPON PAPER INDUSTRIES CO., LTD. |
发明人 |
MIYAWAKI, SHOICHI;KATSUKAWA, SHIHO;ABE, HIROSHI;IIJIMA, YUKO;ISOGAI, AKIRA |
分类号 |
D21H11/18;C08B15/02;D01F2/00;D21H17/25;D21H19/10 |
主分类号 |
D21H11/18 |
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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