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:
Feb. 12, 2013
Filed:
Apr. 08, 2011
Ulrich Mueller, Neustadt, DE;
Roger Ruetz, Mannheim, DE;
Hermann Gies, Sprockhoevel, DE;
BASF SE, Ludwigshafen, DE;
Rubitec GmbH, Bochum, DE;
Abstract
The present invention relates to a process for the preparation of a silicate comprising at least silicon and oxygen, comprising (1) mixing of silicon dioxide and/or of a silicon dioxide precursor with an aqueous solution comprising at least one tetraalkylammonium compound comprising RRRRNand at least one base, wherein Rand Rare methyl and both Rand Rare n-propyl; (2) heating of the colloidal solution obtained according to (1) to a temperature in the range of from greater than the boiling point of the colloidal solution under the chosen pressure to 180° C. at atmospheric pressure to give a suspension comprising at least one silicate, wherein the silicate comprising at least silicon and oxygen is added as a crystallization auxiliary in (1).