发明授权
- 专利标题: Use of polymers in the recycled fiber washing/deinking process
- 专利标题(中): 在再循环纤维洗涤/脱墨过程中使用聚合物
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申请号: US307969申请日: 1994-09-16
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公开(公告)号: US5626718A公开(公告)日: 1997-05-06
- 发明人: Irenee J. Philippe , Frank J. Sutman , Thomas E. Taggart , Mary B. K. Letscher , Michael A. Schuster , John C. Harrington, IV
- 申请人: Irenee J. Philippe , Frank J. Sutman , Thomas E. Taggart , Mary B. K. Letscher , Michael A. Schuster , John C. Harrington, IV
- 申请人地址: PA Trevose
- 专利权人: Betz Laboratories, Inc.
- 当前专利权人: Betz Laboratories, Inc.
- 当前专利权人地址: PA Trevose
- 主分类号: D21C5/02
- IPC分类号: D21C5/02 ; D21C9/00 ; D21C9/06 ; D21C9/02
摘要:
The present invention is directed to a method for increasing the retention on a washing/thickening device in an aqueous papermaking system. The method generally comprises adding to the furnish solids of the system an effective amount of a cationic polyacrylamide polymer.
公开/授权文献
- US4574868A Flow directing element for heat exchanger 公开/授权日:1986-03-11
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