| 发明名称 |
FILLER AGGREGATE COMPOSITION AND ITS PRODUCTION |
| 摘要 |
The present invention relates to a filler aggregate composition comprising filler particles of ground calcium carbonate (GCC); a pretreatment agent selected from polyvinylamine (PVAM) and cationic polyacrylamide (CPAM), or a mixture thereof; and a nanofibrillar cellulose (NFC); wherein said filler aggregate composition is in the form of a slurry, wherein said pretreatment agent has an average molecular weight below 6000000 g/mol and a has a charge density below 7 meq/g, determined at pH 7, and the nanofibrillar cellulose is present in an amount of about 0.1-40% of the dry weight of the filler particles. Further it also relates to its method of production, and its use in stocks, paper and paper board. |
| 申请公布号 |
US2016319485(A1) |
申请公布日期 |
2016.11.03 |
| 申请号 |
US201415108671 |
申请日期 |
2014.12.17 |
| 申请人 |
KEMIRA OYJ |
发明人 |
HIETANIEMI Matti;VIRTANEN Mikko |
| 分类号 |
D21H11/18;D21H17/67;D21H17/34;C08L33/26;D21H21/18;C08L39/02;C08L1/02;C09C1/02;D21H17/37 |
主分类号 |
D21H11/18 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A filler aggregate composition comprising
filler particles of ground calcium carbonate (GCC); a pretreatment agent selected from polyvinylamine (PVAM) and cationic polyacrylamide (CPAM), or a mixture thereof; and a nanofibrillar cellulose (NFC); wherein said filler aggregate composition is in the form of a slurry, wherein said pretreatment agent has an average molecular weight below 6 000 000 g/mol and a has a charge density below 7 meq/g, determined at pH 7, and the nanofibrillar cellulose is present in an amount of about 0.1-40% of the dry weight of the filler particles. |
| 地址 |
Helsinki FI |
