Patent application number | Description | Published |
20100065238 | SILICA-BASED SOLS AND THEIR PRODUCTION AND USE - A process for producing an aqueous silica-based sol is disclosed wherein a cationic ion exchange resin having part of its ion exchange capacity in hydrogen form is contacted with an aqueous alkali metal silicate to form a slurry having a pH from 5.0 to 11.5 and/or having particle aggregation or microgel formation corresponding to a S value up to 45%; adjusting the pH using a material comprising an aluminium compound; and separating the resin from the slurry. | 03-18-2010 |
20110065812 | SILICA-BASED SOLS AND THEIR PRODUCTION AND USE - A process for producing an aqueous silica-based sol is disclosed wherein a cationic ion exchange resin having part of its ion exchange capacity in hydrogen form is contacted with an aqueous alkali metal silicate to form a slurry having a pH from 5.0 to 11.5 and/or having particle aggregation or microgel formation corresponding to a S value up to 45%; adjusting the pH using a material comprising an aluminum compound; and separating the resin from the slurry. | 03-17-2011 |
20120186765 | PROCESS FOR THE PRODUCTION OF PAPER - The present invention relates to a drainage and retention aid composition which comprises:
| 07-26-2012 |
20120291671 | FILLER FOR PAPER MAKING PROCESS - The present invention relates to a filler comprising clay and cellulose derivative having a degree of substitution of net ionic groups up to about 0.65. | 11-22-2012 |
20140174683 | PROCESS FOR THE PRODUCTION OF PAPER - The present invention relates to a process for producing paper which comprises: (i) providing an aqueous suspension comprising cellulosic fibres, (ii) adding to the suspension after the last point of high shear subsequent a centri-screen: (a) a first anionic component which is a water-soluble anionic anionic polysaccharide; (b) a second anionic component which is a water-dispersible or branched acrylamide-based polymer; and (c) a third anionic component which is an anionic siliceous material comprising an anionic silica-based polymer comprising anionic silica-based particles having a specific surface area within the range of from 100 to 1700 m2/g (iii) dewatering the obtained suspension to form paper. | 06-26-2014 |
20140360692 | FILLER FOR PAPER MAKING PROCESS - The present invention relates to a filler comprising clay and cellulose derivative having a degree of substitution of net ionic groups up to about 0.65. | 12-11-2014 |