| 发明名称 |
Filler for papermaking process |
| 摘要 |
The present invention relates to a filler comprising calcium salt and cellulose derivative having a degree of substitution of net ionic groups up to about 0.65, wherein the filler is substantially free from fibers or fibrils of cellulose or lignocellulose. The invention also relates to a filler comprising calcium salt and a cellulose derivative having a degree of substitution of net ionic groups up to about 0.65, wherein the cellulose derivative contains cationic groups. |
| 申请公布号 |
US9156990(B2) |
申请公布日期 |
2015.10.13 |
| 申请号 |
US200411018915 |
申请日期 |
2004.12.21 |
| 申请人 |
EKA CHEMICALS AB |
发明人 |
Van Der Horst Peter Marten;Sanne Erik;Andersson Kjell Rune;Garcia-Lindgren Cherryleen;Wallberg Marie-Louise;Wännström Sune |
| 分类号 |
C09C1/02;D21H17/69;D21H17/26;D21H17/67 |
主分类号 |
C09C1/02 |
| 代理机构 |
|
代理人 |
Su Alice C. |
| 主权项 |
1. A filler comprising calcium salt and water-soluble cellulose derivative having a degree of substitution of net anionic groups up to about 0.40, wherein the filler is substantially free from fibers or fibrils of cellulose or lignocellulose, wherein at least about 30% by weight of the cellulose derivative is absorbed on or attached to the calcium salt. |
| 地址 |
Bohus SE |
