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:
Nov. 18, 2014
Filed:
Oct. 09, 2009
Nicole Brausch, Essen, DE;
Goetz Baumgarten, Haltern am See, DE;
Guido Stochniol, Haltern am See, DE;
Yuecel Oenal, Erlenbach, DE;
Martin Trocha, Essen, DE;
Nicole Brausch, Essen, DE;
Goetz Baumgarten, Haltern am See, DE;
Guido Stochniol, Haltern am See, DE;
Yuecel Oenal, Erlenbach, DE;
Martin Trocha, Essen, DE;
Evonik Degussa GmbH, Essen, DE;
Abstract
The present invention relates to a process for purifying low molecular weight hydridosilane solutions, in which a solution to be purified comprising a) at least one low molecular weight hydridosilane, b) at least one solvent and c) at least one impurity selected from the group of the compounds having at least 20 silicon atoms and/or the group of the homogeneous catalyst systems is subjected to a crossflow membrane process with at least one membrane separation step using a permeation membrane.