发明申请
- 专利标题： Composition and Process for Increasing the Dry Strength of a Paper Product
- 专利标题（中）： 增加纸制品干强度的组成和方法
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申请号： US12946355申请日： 2010-11-15
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公开(公告)号： US20120118523A1公开(公告)日： 2012-05-17
- 发明人: Chen Lu , Vladimir Grigoriev , Scott Rosencrance
- 申请人： Chen Lu , Vladimir Grigoriev , Scott Rosencrance
- 申请人地址： FI Espoo
- 专利权人： KEMIRA OYJ
- 当前专利权人： KEMIRA OYJ
- 当前专利权人地址： FI Espoo
- 主分类号： D21H17/37
- IPC分类号： D21H17/37 ; C08L3/00
摘要：
A dry strength additive composition generally includes an anionic and/or amphoteric polyacrylamide having a molecular weight of less than 1,000,000 Daltons, wherein the amphoteric polyacrylamide has a net negative charge; a cationic and/or amphoteric starch; and a cationic non-starch polymer having a charge density greater than 1 milliequivalent per gram (meq/g) at a pH of 3. The components defining the composition can be added to a pulp suspension sequentially or as a pre-blended mixture.
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