New mineral pigment containing calcium carbonate, an aqueous suspension containing it and uses thereof
Номер патента: MY136019A
Опубликовано: 31-07-2008
Автор(ы): Matthias Buri, Patrick Gane, Rene Vinzenz Blum
Принадлежит: OMYA DEVELOPMENT AG
Опубликовано: 31-07-2008
Автор(ы): Matthias Buri, Patrick Gane, Rene Vinzenz Blum
Принадлежит: OMYA DEVELOPMENT AG
Реферат: THE PRESENT INVENTION CONCERNS THE TECHNICAL SECTOR OF MINERAL PIGMENTS CONTAINING A PRODUCT FORMED IN SITU BY THE DOUBLE AND/OR MULTI REACTION BETWEEN A CALCIUM CARBONATE AND THE REACTION PRODUCT OR PRODUCTS OF THE SAID CARBONATE WITH ONE OR MORE MODERATELY STRONG TO STRONG H3O+ ION DONORS AND THE REACTION PRODUCT OR PRODUCTS OF THE SAID CARBONATE WITH GASEOUS CO2 FORMED IN SITU AND/OR COMING FROM AN EXTERNAL SUPPLY, AND AT LEAST ONE ALUMINIUM SILICATE AND/OR AT LEAST ONE SYNTHETIC SILICA AND/OR AT LEAST ONE CALCIUM SILICATE AND/OR AT LEAST ONE SILICATE OF A MONOVALENT SALT SUCH AS SODIUM SILICATE AND/OR POTASSIUM SILICATE AND/OR LITHIUM SILICATE, AND/OR AT LEAST ONE ALUMINIUM HYDROXIDE AND/OR AT LEAST ONE SODIUM AND/OR POTASSIUM ALUMINATE, CONTAINING LESS THAN 0.1 % BY WEIGHT SILICATE OF A MONOVALENT SALT SUCH AS SODIUM, POTASSIUM OR LITHIUM SILICATE OR MIXTURES THEREOF, WITH RESPECT TO THE DRY WEIGHT OF CALCIUM CARBONATE, HAVING A PH GREATER THAN 7.5 MEASURED AT 20°C, AND THEIR USES IN PAPERMAKING APPLICATIONS SUCH AS MASS FILLING AND/OR THE COATING OF PAPER AND MORE PARTICULARLY OF PRINTING PAPER, IN PARTICULAR FOR OFFSET PRINTING, OR DIGITAL PRINTING SUCH AS INKJET AND/OR LASER PRINTING.
Stabilized calcium carbonate composition using sodium silicate and one or more weak acids or alum and uses therefor
Номер патента: US6083317A. Автор: Jose M. Rodriguez,Kuan-Ting Wu,Kevin J. Snowden. Владелец: Imerys Pigments Inc. Дата публикации: 2000-07-04.