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US 4,366,103 AGranted
Deodorized organothiophosphorous and emulsifiable concentrates thereof
AssigneeRhone-Poulenc Agrochimie
InventorsDavid A. Pearce, John J. Mehok
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Abstract
Organothiophosphorous compounds, e.g., Merphos, which contain or develop malodorous mercaptan impurities during storage, are protected against such odor development by the addition of minor amounts (0.1 to 10%) of a ketone, especially in the presence of a catalyst such as cuprous chloride or p-toluene sulfonic acid in a concentration range of 0.01 to 0.1%. Formulated products are also claimed.
Claims8
A composition comprising an organothiophosphorus compound of the structure:
- P(SR).sub.3 wherein R is C.sub.1 -C.sub.8 alkyl and a minor stabilizing amount of a C.sub.3 -C.sub.10 aliphatic or cycloaliphatic ketone.
Dependencies are inferred from the claim text.