Invention Grant
- Patent Title: Method for the decarboxylation of dicarboxylic acids
- Patent Title (中): 二羧酸脱羧的方法
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Application No.: US10538995Application Date: 2003-12-04
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Publication No.: US07671217B2Publication Date: 2010-03-02
- Inventor: Sigurd Buchholz , Alexander Klausener , Reinhard Langer , Leslaw Mleczko , Günter Rauchschwalbe
- Applicant: Sigurd Buchholz , Alexander Klausener , Reinhard Langer , Leslaw Mleczko , Günter Rauchschwalbe
- Applicant Address: DE Leverkusen
- Assignee: LANXESS Deutschland GmbH
- Current Assignee: LANXESS Deutschland GmbH
- Current Assignee Address: DE Leverkusen
- Agent Michael A. Miller
- Priority: DE10258588 20021216
- International Application: PCT/EP03/13679 WO 20031204
- International Announcement: WO2004/055023 WO 20040701
- Main IPC: C07D495/02
- IPC: C07D495/02
Abstract:
The invention relates to a method for the thermal decarboxylation of dicarboxylic acids, in particular to 3,4-ethylene dioxythiophene-2,5-dicarboxylic acid as an educt. According to said method the educt is used in solid form and/or the reaction is carried out in the presence of a plurality of fluidised bed bodies. No solvents are used in the reaction and the decarboxylation product that is formed during the reaction is carried away from the reaction zone in gaseous form.
Public/Granted literature
- US20060149083A1 Method for the decarboxylation of dicarboxylic acids Public/Granted day:2006-07-06
Information query
