- 专利标题: Cellulosic, modified lignin and cationic polymer composition and process for making improved paper or paperboard
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申请号: US483645申请日: 1995-06-07
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公开(公告)号: US5501773A公开(公告)日: 1996-03-26
- 发明人: David L. Elliott , Ronald J. Falcione , Wood E. Hunter
- 申请人: David L. Elliott , Ronald J. Falcione , Wood E. Hunter
- 申请人地址: PA Pittsburgh
- 专利权人: Calgon Corporation
- 当前专利权人: Calgon Corporation
- 当前专利权人地址: PA Pittsburgh
- 主分类号: D21H17/23
- IPC分类号: D21H17/23 ; D21H17/37 ; D21H17/44 ; D21H17/45 ; D21H21/10
摘要:
A composition comprising an aqueous cellulosic furnish, a high molecular weight cationic polymer, and an anionic polymer comprising a modified lignin wherein the ratio of the cationic polymer to the anionic polymer is from about 10:1 to 1:10 on an active basis is disclosed. A process employing this composition for making paper or paperboard having improved drainage, retention and formation properties is also provided.
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