Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof
Reexamination Certificate
2006-10-10
2006-10-10
Zucker, Paul A. (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acids and salts thereof
Reexamination Certificate
active
07119228
ABSTRACT:
The present invention is directed to an improved process for producing methionine in which the by-product methionyl-methionine is quickly converted to the product methionine by a hydrolysis reaction. The process is performed at high temperatures (200° C. to 280° C.) and short residence times (20 s to 200 s) and results in an improved yield of end product methionine.
REFERENCES:
patent: 4069251 (1978-01-01), Mannsfeld et al.
patent: 4303621 (1981-12-01), Lussling et al.
patent: 0 839 804 (2002-01-01), None
patent: 1 312 611 (2003-05-01), None
Buss Dieter
Goedecke Ralf
Hasselbach Hans-Joachim
Hornung Gundolf
Körfer Martin
Degussa - AG
Fitch Even Tabin & Flannery
Sanzo Michael A.
Zucker Paul A.
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