Invention Grant
- Patent Title: Process for preparing phthalic anhydride
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Application No.: US14900663Application Date: 2014-06-16
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Publication No.: US09765046B2Publication Date: 2017-09-19
- Inventor: Nico F. Fischer , Michael Krämer , Jürgen Zühlke , Hans-Martin Allmann
- Applicant: BASF SE
- Applicant Address: DE Ludwigshafen
- Assignee: BASF SE
- Current Assignee: BASF SE
- Current Assignee Address: DE Ludwigshafen
- Agency: Drinker Biddle & Reath LLP
- Priority: EP13173693 20130626
- International Application: PCT/IB2014/062255 WO 20140616
- International Announcement: WO2014/207603 WO 20141231
- Main IPC: C07D307/89
- IPC: C07D307/89 ; C07C51/265 ; C07C51/31
Abstract:
The present invention relates to a process for preparing phthalic anhydride by gas phase oxidation of aromatic hydrocarbons, in which a gas stream comprising at least one aromatic hydrocarbon and molecular oxygen is passed continuously over a thermostatted catalyst and the supply of the at least one aromatic hydrocarbon to the catalyst is temporarily interrupted after putting the catalyst on stream.
Public/Granted literature
- US20160145226A1 PROCESS FOR PREPARING PHTHALIC ANHYDRIDE Public/Granted day:2016-05-26
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