Method for preparing formylphosphonic acid

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United States of America Patent

PATENT NO 6762317
APP PUB NO 20030114706A1
SERIAL NO

10236626

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An improved process for the manufacture of formylphosphonic acid derivatives is reported. An aminomethylphosphonic acid substrate is contacted with a reagent selected from the group consisting of water, an alcohol, a phenol compound, and mixtures thereof and an oxidizing gas in the presence of a catalyst to form a reaction product mixture containing a formylphosphonic acid derivative and the conditions under which said contacting is carried out are controlled so that no more than 50% of the formylphosphonic acid derivative formed in the reaction product mixture is consumed by reaction with the reagent.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
MONSANTO COMPANYST LOUIS, MO294

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Franczyk, II Thaddeus S St. Louis, MO 14 37

Cited Art Landscape

Patent Info (Count) # Cites Year
 
BAYER AKTIENGESELLSCHAFT (1)
4348332 Phosphonoformaldehyde, a process for its preparation and its use as an intermediate product for the preparation of medicaments 9 1981
 
MONSANTO COMPANY (1)
4568432 Process for preparing glyphosate and glyphosate derivatives 19 1984
 
Monsanto Technology LLC (2)
4624937 Process for removing surface oxides from activated carbon catalyst 83 1985
6232494 Process for the preparation of N-(phosphonomethyl)glycine by oxidizing N-substituted N-(phosphonomethyl)glycine 19 1999
 
The Procter & Gamble Company (1)
4439474 Disposable floor mat with improved wet soil absorptivity 38 1981
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
Monsanto Technology LLC (3)
* 7091376 Method for preparing formylphosphonic acid 1 2004
* 2004/0225,147 Method for preparing formylphosphonic acid 0 2004
* 7294733 Method for preparing formylphosphonic acid 0 2006
* Cited By Examiner