Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters
Reexamination Certificate
2006-01-31
2006-01-31
Zucker, Paul A. (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acid esters
Reexamination Certificate
active
06992208
ABSTRACT:
A process for the manufacture of iodopropynyl butylcarbamate (IPBC) is disclosed wherein the subject reaction is carried out in an aqueous solution of a suitable surfactant. The iodination reactant is metallic iodide salt which serves as a donor of I+ ions. The I+ ion is generated on an as needed basis, during the reaction sequence, hence the formation of undesirable isomers of IPBC are minimized. The process of this invention produces a highly purified IPBC having, preferably, a low moisture content (wet-cake). The IPBC produced by such a process is also disclosed herein.
REFERENCES:
patent: 3923870 (1975-12-01), Singer
patent: 4297258 (1981-10-01), Long, Jr.
patent: 5693849 (1997-12-01), Nowak
patent: 0014032 (1980-08-01), None
Heineke Martin S
Jones Kurt A.
Schneider Charles A.
Schneider David J.
Fay Sharpe Fagan Minnich & McKee LLP
H&S Chemical Company, Inc.
Zucker Paul A.
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