Organic compounds -- part of the class 532-570 series – Organic compounds – Phosphorus acids or salts thereof
Reexamination Certificate
2006-08-15
2006-08-15
Richter, Johann (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Phosphorus acids or salts thereof
C562S008000, C562S017000, C558S137000, C558S144000
Reexamination Certificate
active
07091376
ABSTRACT:
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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CA:91:193420 abs of SU684038.
Monsanto Technology LLC
Nwaonicha Chukwuma
Richter Johann
Schaper Joseph A.
Senniger Powers
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