Invention Grant
- Patent Title: Process for the preparation of onium salts having a low chloride content
- Patent Title (中): 制备氯化物含量低的鎓盐的方法
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Application No.: US11632313Application Date: 2005-06-17
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Publication No.: US07692007B2Publication Date: 2010-04-06
- Inventor: Nikolai (Mykola) Ignatyev , Urs Welz-Biermann , Peter Barthen , Helge Willner
- Applicant: Nikolai (Mykola) Ignatyev , Urs Welz-Biermann , Peter Barthen , Helge Willner
- Applicant Address: DE Darmstadt
- Assignee: Merck Patent Gesellschaft mit beschrankter Haftung
- Current Assignee: Merck Patent Gesellschaft mit beschrankter Haftung
- Current Assignee Address: DE Darmstadt
- Agency: Millen, White, Zelano, Branigan, P.C.
- Priority: DE102004034543 20040716
- International Application: PCT/EP2005/006550 WO 20050617
- International Announcement: WO2006/007912 WO 20060126
- Main IPC: C07D239/00
- IPC: C07D239/00 ; C07D233/00 ; C07D211/92 ; C07F5/02
Abstract:
The invention relates to a process for the preparation of onium salts having a low chloride content by reaction of an onium chloride with an acid, where the hydrochloric acid forming is removed by azeotropic distillation by coordination to an organic solvent which forms an azeotropic mixture with water.
Public/Granted literature
- US20080027230A1 Process for the Preparation of Onium Salts Having a Low Chloride Content Public/Granted day:2008-01-31
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