发明名称 |
PAPERMAKING ADDITIVE AND PAPER CONTAINING THE SAME |
摘要 |
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.
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申请公布号 |
US2011008638(A1) |
申请公布日期 |
2011.01.13 |
申请号 |
US20090922546 |
申请日期 |
2009.03.25 |
申请人 |
MIYAWAKI SHOICHI;KATSUKAWA SHIHO;ABE HIROSHI;IIJIMA YUKO;ISOGAI AKIRA |
发明人 |
MIYAWAKI SHOICHI;KATSUKAWA SHIHO;ABE HIROSHI;IIJIMA YUKO;ISOGAI AKIRA |
分类号 |
B32B29/00;C08B1/00;D21H11/00 |
主分类号 |
B32B29/00 |
代理机构 |
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代理人 |
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地址 |
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