发明名称 |
INTERNALLY ADDING PAPER-STRENGTHENING AGENT FOR PRODUCING PRINTING PAPER COMPOSED OF SELF-FIXING STARCH AND METHOD FOR PRODUCING PRINTING PAPER |
摘要 |
PROBLEM TO BE SOLVED: To provide an internally adding self-fixing starch having high fixity to pulp fiber and having high surface strength-improving effect and vessel pick- suppressing effect for printing paper. SOLUTION: This internally adding paper strengthening agent for producing printing paper comprises a self-fixing starch obtained by absorbing a high molecular weight cationic polymer on the surface of a low viscous anionic starch powder at a rate of 400-7,000 ppm as the solid component based on the starch solid component, wherein the 0.2 wt.% aqueous solution of the cationic polymer has >=30 mPa.s Type B viscosity at 20 deg.C and 60 rpm and a 7-25 wt.% solid concentration solution of the low viscous anionic starch powder has 50 mPa.s Type B viscosity at 50 deg.C and 60 rpm. And the agent is used by being internally added to paper stock in paper making.
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申请公布号 |
JP2003049399(A) |
申请公布日期 |
2003.02.21 |
申请号 |
JP20010235631 |
申请日期 |
2001.08.02 |
申请人 |
NIPPON SHOKUHIN KAKO CO LTD |
发明人 |
NUKAZUKA YASUJI;KIMURA TORU;ASHIKAWA MASATAKA |
分类号 |
D21H21/18;D21H17/29;(IPC1-7):D21H21/18 |
主分类号 |
D21H21/18 |
代理机构 |
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地址 |
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