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:
Jul. 14, 2015
Filed:
Apr. 20, 2009
Philipp Albert, Lörrach, DE;
Eckhard Just, Rheinfelden, DE;
Philipp Albert, Lörrach, DE;
Eckhard Just, Rheinfelden, DE;
Evonik Degussa GmbH, Essen, DE;
Abstract
The invention relates to a method for treating an ammonium halogenide and/or residue containing organic aminhydrohalogenides, produced during the production of an amino-functional organosilane of general formula (I) RN[(CH)NH](Z)Si(R″)(OR')(Ia), wherein the production of the amino-functional organosilane according to formula (Ia) is based on the conversion of a halogen-functional organosilane of general formula (II) X—Z—Si(R″)(OR′)(II), with excess ammonia or an organic amine of general formula (III) RNH[(CH)NH]R (III) and subsequently separating and treating the raw product and the resulting residue containing salt. The treatment consists of adding an essentially non-polar organic solvent and an aqueous lye to the residue. The mixture is reacted, subsequently the aqueous phase is separated from the organic phase, the organic solvent contained in the organic phase is removed from said phase and the residual organic phase is recovered.