Invention Grant
- Patent Title: Method for production of ammonium paratungstate tetrahydrate and highly pure ammonium paratungstate tetrahydrate
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Application No.: US12524968Application Date: 2008-01-29
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Publication No.: US08168155B2Publication Date: 2012-05-01
- Inventor: Viktor Stoller , Michael Erb , Juliane Meese-Marktscheffel , Michael Lohse , Wolfgang Mathy
- Applicant: Viktor Stoller , Michael Erb , Juliane Meese-Marktscheffel , Michael Lohse , Wolfgang Mathy
- Applicant Address: DE
- Assignee: H.C. Starck GmbH
- Current Assignee: H.C. Starck GmbH
- Current Assignee Address: DE
- Agency: Connolly Bove Lodge & Hutz LLP
- Priority: DE102007005287 20070202
- International Application: PCT/EP2008/051000 WO 20080129
- International Announcement: WO2008/092838 WO 20080807
- Main IPC: C01G41/02
- IPC: C01G41/02
Abstract:
The invention is directed to a method for the production of ammonium paratungstate tetrahydrate by thermal treatment of ammonium paratungstate decahydrate in an aqueous suspension. The ammonium paratungstate tetrahydrate can be produced with high purity and high yield. The production method may furthermore be carried out in a simple and energy-efficient manner.
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