发明名称 |
PREFLOCCULATION OF FILLERS USED IN PAPERMAKING |
摘要 |
A method of preparing a stable dispersion of flocculated filler particles for use in papermaking processes comprises use of microparticle prior to, simultaneous to, and/or after addition of a first flocculating agent to an aqueous dispersion of filler particles, followed by addition of a second flocculating agent to the dispersion and further optional 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 microparticle and/or the first flocculating agent is added.
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申请公布号 |
US2013059949(A1) |
申请公布日期 |
2013.03.07 |
申请号 |
US201213665963 |
申请日期 |
2012.11.01 |
申请人 |
CHENG WEIGUO;BROADUS KATHERINE M.;SMORON DOROTA;WILSON SHAWNEE M. |
发明人 |
CHENG WEIGUO;BROADUS KATHERINE M.;SMORON DOROTA;WILSON SHAWNEE M. |
分类号 |
C08L33/26;C08K3/26;C08L3/00 |
主分类号 |
C08L33/26 |
代理机构 |
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地址 |
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