Continuous isothermal process for preparing mononitrotoluenes in the presence of phosphoric acid

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Jul 27, 2004
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Oct 10, 2002
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Apr 2, 2002
filing date
Apr 6, 2001

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Expired

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Abstract

The present invention relates to a continuous isothermal process for preparing mononitrotoluenes in the presence of a mixed acid component comprising mixtures of sulfuric acid and phosphoric acid with concentration of the resultant waste acid and recycling of the concentrated waste acid to the process.

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LANXESS DEUTSCHLAND GMBH	50569 KÖLN

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C07C:ACYCLIC OR CARBOCYCLIC COMPOUNDS

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Inventor Name	Address	# of filed Patents	Total Citations
Demuth, Ralf	Hilden, DE	7	15
Gotta, Matthias	Koln, DE	11	24
Ronge, Georg	Dusseldorf, DE	29	161
Weber, Hans-Martin	Leverkusen, DE	5	5
Zirngiebl, Eberhard	Koln, DE	29	183

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Continuous isothermal process for preparing mononitrotoluenes in the presence of phosphoric acid

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United States of America Patent

10114288

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PATENT NO	6768032
APP PUB NO	20020147372A1
SERIAL NO	10114288
DOCKET NO

US Family Size	Non-US Coverage
Patent Longevity Expired	Forward Citations

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
July 27, 2004	US,6768032,B2 US6768032B2	GRANTED PATENT AS SECOND PUBLICATION
October 10, 2002	US,20020147372,A1 US20020147372A1	FIRST PUBLISHED PATENT APPLICATION

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10114288

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