发明名称 |
A METHOD FOR PROVIDING A PRETREATED FILLER COMPOSITION AND ITS USE IN PAPER AND BOARD MANUFACTURING |
摘要 |
The present invention relates to a method for providing a pretreated filler composition for use in paper and board manufacturing including the steps of: a) providing a filler comprising precipitated calcium carbonate, said filler being in the form of a slurry comprising no additives; b) providing at least one polymer selected from polyvinylamine or polyacrylic amide, said polymer having a charge density of an absolute value of at most 4 meq/g determined at pH 7; c) combining said at least one polymer of step b) with the filler of step a); d) providing a slurry of nanofibrillar cellulose; e) combining said nanofibrillar cellulose slurry with the formed combination of step c) and forming a pretreated filler composition comprising aggregates. Further it also relates to a pretreated filler composition prepared therefrom, and its use in stocks, paper and paper board. |
申请公布号 |
EP3090099(A1) |
申请公布日期 |
2016.11.09 |
申请号 |
EP20140815687 |
申请日期 |
2014.12.17 |
申请人 |
KEMIRA OYJ;UPM-KYMMENE CORPORATION;STORA ENSO OYJ |
发明人 |
HIETANIEMI, MATTI;VIRTANEN, MIKKO;TORVINEN, KATARIINA;SAARI, TERHI;ERKKI, HELLÉN |
分类号 |
D21H11/18;D21H17/67;D21H17/69;D21H21/18 |
主分类号 |
D21H11/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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