Patent application number | Description | Published |
20090280309 | PYROGENIC TITANIUM DIOXIDE COMPRESSED TO SLUGS - Pyrogenic titanium dioxide is compressed to slugs by preliminarily deaerating it, compressing it to slugs, and crushing the slugs and optionally classifying them. The slugs are characterized by a tamped density (to DIN EN ISO 787-11) of 500 to 1200 g/l. | 11-12-2009 |
20090306224 | USE OF ROLL COMPACTED PYROGENICALLY PRODUCED SILICON DIOXIDE IN PHARMACEUTICAL COMPOSITIONS - The use of Schülpen based on pyrogenically produced silicon dioxide in pharmaceutical compositions is described. | 12-10-2009 |
20090312439 | USE OF ROLL COMPACTED PYROGENICALLY PRODUCED SILICON DIOXIDE IN PHARMACEUTICAL COMPOSITIONS - The use of Schülpen based on pyrogenically produced silicon dioxide in pharmaceutical compositions, the pharmaceutical compositions per se, as well as an adsorbate consisting of the Schülpen and at least one further substance selected from pharmaceutical active constituents and excipients, and the produce of such adsorbates, are described. | 12-17-2009 |
20100010116 | Process for Preparation of Rubber Mixtures Containing Silicon Dioxide - Rubber mixtures are prepared by using, alongside the other constituents, pyrogenically prepared silicon dioxide in the form of crusts whose tamped bulk density (to DIN EN ISO 787-11) is from 185 to 700 g/l. | 01-14-2010 |
20100179269 | PYROGENICALLY PREPARED SILICON DIOXIDE COMPACTED TO GIVE CRUSTS - Pyrogenically prepared silicon dioxide is compacted to give crusts, in that it is subject to preliminary de-aeration, and is compacted to give crusts, and the crusts are broken and, if appropriate, classified. The tamped bulk density (to DIN EN ISO 787-11) of the silicon dioxide compacted to give crusts is from 185 to 700 g/l. It can be used as filler in rubber mixtures. | 07-15-2010 |
20100261823 | FLAKES COMPRISING PYROGENICALLY PREPARED SILICON DIOXIDE - Flakes comprising pyrogenically prepared silicon dioxide were rendered water repellent after compacting. They can be used in natural rubber and synthetic rubber production. | 10-14-2010 |
20110217552 | PROCESS FOR PREPARING AN ALUMINIUM OXIDE POWDER HAVING A HIGH ALPHA-AL2O3 CONTENT - Process for preparing an aluminium oxide powder which is present in the form of aggregated primary particles and comprises at least 85% by weight of alpha-aluminium oxide, in which an aluminium oxide powder which a) is present in the form of aggregated primary particles, b) is selected from the group consisting of gamma-aluminium oxide, theta-aluminium oxide, delta-aluminium oxide and/or X-ray amorphous aluminium oxide, and c) has a tamped density of at least 250 g/l, is subject to a heat treatment at 13000C or more and subsequently milled. Aluminium oxide powder which can be obtained by this process. Aluminium oxide powder in the form of aggregated primary particles having a BET surface area of from 3 to 30 m2/g, in which the proportion of alpha-aluminium oxide is at least 85% by weight and the ratio dgo/dio of the weight distribution of the primary particles is at least 2.8. Use as constituent of fluorescent tubes. | 09-08-2011 |