公开(公告)号：US20100170419A1

公开(公告)日：2010-07-08

申请号：US12663407

申请日：2008-06-04

申请人： Michael Persson ,  Freddie Hansson ,  Annika Viola Pal ,  Lars Lindahl ,  Joakim Carlën

发明人： Michael Persson ,  Freddie Hansson ,  Annika Viola Pal ,  Lars Lindahl ,  Joakim Carlën

IPC分类号： C04B14/04

CPC分类号： D21H17/74 ,  C01B33/1435 ,  C01B33/149 ,  D21H17/375 ,  D21H17/42 ,  D21H17/44 ,  D21H17/68 ,  D21H21/10 ,  D21H23/04

摘要： The invention relates to a sol containing silica-based particles having an axial ratio of at least about 10 and specific surface area of at least about 600 m2/g. The invention further relates to a sol containing silica-based particles having an axial ratio of at least about 10 and S-value up to about 25. The invention further relates to a sol containing silica-based particles having an axial ratio of at least about 10 and a specific surface area of at least about 400 m2/g, wherein the silica-based particles are surface-modified. The invention further relates to a sol containing silica-based particles having a viscosity of at least 50 cP and silica content of at least about 3% by weight, wherein the silica-based particles have a specific surface area of at least about 400 m2/g. The invention further relates to a process for producing the aqueous silica-based sol according to the invention, a sol containing silica-based particles obtainable by the process, use of the sol containing silica-based particles as a flocculating agent. The invention further relates to a process for producing paper in which the sol containing silica-based particles is used as a drainage and retention aid.

摘要翻译： 本发明涉及含有至少约10的轴比和至少约600m 2 / g的比表面积的二氧化硅基颗粒的溶胶。 本发明还涉及一种含有轴比为至少约10，S值至多约25的二氧化硅基颗粒的溶胶。本发明还涉及含有至少约 10，比表面积为至少约400m2 / g，其中二氧化硅基颗粒被表面改性。 本发明还涉及含有二氧化硅基颗粒的溶胶，所述颗粒具有至少50cP的粘度和至少约3重量％的二氧化硅含量，其中所述二氧化硅基颗粒的比表面积为至少约400m 2 / G。 本发明还涉及本发明的水性二氧化硅系溶胶的制造方法，含有二氧化硅系颗粒的溶胶，该方法可以使用含有二氧化硅系粒子的溶胶作为絮凝剂。 本发明还涉及一种生产纸的方法，其中含有二氧化硅基颗粒的溶胶用作排水和助留剂。