公开(公告)号：US20120111520A1

公开(公告)日：2012-05-10

申请号：US12941601

申请日：2010-11-08

申请人： Jing SHEN ,  Zhanqian SONG ,  Xueren QIAN ,  Yu ZHANG

发明人： Jing SHEN ,  Zhanqian SONG ,  Xueren QIAN ,  Yu ZHANG

IPC分类号： D21H17/63 ,  C09C1/02

CPC分类号： C09C1/022 ,  C01P2006/60 ,  D21H11/14 ,  D21H17/675 ,  D21H17/69

摘要： The present invention relates to a method for the modification of calcium carbonate fillers to improve their acid-tolerant property and to make their effective use in papermaking of high-lignin-content deinked pulp derived from recycled newspaper. It has been found that modification of calcium carbonate fillers using the combination of a calcium salt with a weak acid can improve the acid-tolerant property of the fillers, and the optical properties of the filled paper, such as brightness, can also be effectively improved.

摘要翻译： 本发明涉及一种改进碳酸钙填料以提高其耐酸性能并有效地用于来自再生报纸的高木质素含量脱墨纸浆造纸的方法。 已经发现，使用钙盐与弱酸的组合改性碳酸钙填料可以提高填料的耐酸性，并且也可以有效地改善填充纸的光学性能，例如亮度 。