Process for the manufacture of difluoromethane

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Oct 28, 2003
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Jan 18, 2001
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Jun 29, 1995

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Abstract

The invention relates to the synthesis of difluoromethane by gas-phase catalytic fluorination of methylene chloride. To lengthen the lifetime of the catalyst the operation is carried out in the presence of chlorine.

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Patent Owner	Address
ATOFINA	FRANCE SENNA PITOT PUTEAUX HAUTS-DE-SEINE

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C07C:ACYCLIC OR CARBOCYCLIC COMPOUNDS

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Inventor Name	Address	# of filed Patents	Total Citations
Cheminal, Bernard	Saucieu-en-Jarrest, FR	24	131
Lacroix, Eric	Amberieux d'Azergues, FR	35	171
Lantz, Andre	Vernaison, FR	36	246
Perdrieux, Sylvain	Vernaison, FR	13	78
Requieme, Benoit	Charly, FR	7	54

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Process for the manufacture of difluoromethane

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United States of America Patent

09761845

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US Family Size	Non-US Coverage
Patent Longevity	Forward Citations

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
October 28, 2003	US,6639115,B2 US6639115B2	GRANTED PATENT AS SECOND PUBLICATION
June 14, 2001	US,20010003786,A1 US20010003786A1	FIRST PUBLISHED PATENT APPLICATION

PATENT NO	6639115
SERIAL NO	09761845
DOCKET NO

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09761845

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