发明名称 |
CONTROLLABLE FILLER PREFLOCULATION USING A DUAL POLYMER SYSTEM |
摘要 |
<p>A method of preparing a stable dispersion of flocculated filler particles for use in papermaking processes comprises sequential addition of a first flocculating agent to an aqueous dispersion of filler particles followed by shearing of the dispersion, followed by addition of a second flocculating agent to the dispersion and further shearing of the resultant filler flocs to the desired particle size resulting in shear resistant filler flocs with a defined and controllable size distribution. In addition, a neutralizing coagulant can be added to the dispersion to partially or completely neutralize the charge of the filler before the first flocculating agent is added.</p> |
申请公布号 |
WO2013158811(A1) |
申请公布日期 |
2013.10.24 |
申请号 |
WO2013US37048 |
申请日期 |
2013.04.18 |
申请人 |
NALCO COMPANY |
发明人 |
CHENG, WEIGUO;GRAY, ROSS T. |
分类号 |
D21H21/00;D21H17/63;D21H17/67 |
主分类号 |
D21H21/00 |
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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