The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 22, 2004
Filed:
Sep. 09, 2002
Thomas Fleischmann, Quirla, DE;
Heike Kastner, Weissenborn, DE;
TAMI Deutschland GmbH, Hermsdorf/Thuer., DE;
Abstract
The invention relates to a method for producing a monolithic, porous, ceramic shaped body and to the shaped bodies produced according to this method. Said shaped body is used predominantly as a support material for porous, inorganic and/or organic membranes for the flow filtration of liquids and gases. The aim of the invention is to provide a method for producing a shaped body consisting substantially of TiO with an open porosity >10%, an average pore size of between 1 and 50 &mgr;m and a mechanical stability >20 N/mm . To achieve this, a first TiO -powder fraction is pre-sintered at temperatures >1200° C. and subsequently ground to achieve a screening refuse of at least <5% for grain sizes of less than 100 &mgr;m, at least an additional TiO powder fraction, whose grain size is significantly smaller than that of the first powder fraction, is added to and mixed with the granulate and the mixture obtained is compressed into a shaped body which is subjected to an additional sintering process at temperatures that are >1100° C. but lower than the first sintering temperature.