Invention Grant
- Patent Title: Process for preparing tetramethyl glycolide
- Patent Title (中): 制备四甲基乙交酯的方法
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Application No.: US12443784Application Date: 2007-08-30
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Publication No.: US07928251B2Publication Date: 2011-04-19
- Inventor: Bernd Vogel , Alexander May , Hermann Siegert
- Applicant: Bernd Vogel , Alexander May , Hermann Siegert
- Applicant Address: DE Darmstadt
- Assignee: Evonik Roehm GmbH
- Current Assignee: Evonik Roehm GmbH
- Current Assignee Address: DE Darmstadt
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: DE102006055427 20061122
- International Application: PCT/EP2007/059038 WO 20070830
- International Announcement: WO2008/061821 WO 20080529
- Main IPC: C07D319/12
- IPC: C07D319/12
Abstract:
The present invention relates to a process for preparing tetramethylglycolide by heating a composition which comprises at least 50% by weight of 2-hydroxy-isobutyric acid and/or tetramethylglycolide to a temperature of at least 100° C.
Public/Granted literature
- US20100010276A1 PROCESS FOR PREPARING TETRAMETHYL GLYCOLIDE Public/Granted day:2010-01-14
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