| 发明名称 | Method for increasing paper strength | ||
| 摘要 | The present invention provides a method for increasing paper strength in papermaking process comprising adding to a pulp a composition comprising an anionic polyacrylamide (APAM) and a high charge cationic glyoxylated polyacrylamide (GPAM). The present invention also provides paper obtained with said method. | ||
| 申请公布号 | US9347181(B2) | 申请公布日期 | 2016.05.24 |
| 申请号 | US201314087038 | 申请日期 | 2013.11.22 |
| 申请人 | KEMIRA OYJ | 发明人 | Lu Chen;Rosencrance Scott;Nguyen Danny |
| 分类号 | D21H11/00;D21H17/43;D21H17/37;D21H17/41;D21H21/10;D21H21/18;D21H21/20;D21H23/04;D21H23/22 | 主分类号 | D21H11/00 |
| 代理机构 | Thomas Horstemeyer, LLP | 代理人 | Thomas Horstemeyer, LLP |
| 主权项 | 1. A mixed composition comprising an anionic polyacrylamide (APAM), and a high charge cationic glyoxylated polyacrylamide (GPAM), wherein the high charge cationic glyoxylated polyacrylamide has a cationic charge density of over 0.6 meq/g, said mixed composition having being prepared on site for being added to a fibrous slurry or to a fibrous web in a papermaking process. | ||
| 地址 | Helsinki FI | ||