Organic compounds -- part of the class 532-570 series – Organic compounds – Unsubstituted hydrocarbyl chain between the ring and the -c-...
Reexamination Certificate
2008-10-02
2010-10-05
Kifle, Bruck (Department: 1624)
Organic compounds -- part of the class 532-570 series
Organic compounds
Unsubstituted hydrocarbyl chain between the ring and the -c-...
Reexamination Certificate
active
07807826
ABSTRACT:
The present invention provides a method for purifying laurolactam from a crude lactam mixture. In the method of the present invention, laurolactam is selectively crystallized by melt crystallization with controlled cooling of the crude lactam mixture.
REFERENCES:
patent: 3839324 (1974-10-01), Schultze et al.
patent: 4248781 (1981-02-01), Horn et al.
patent: 6596862 (2003-07-01), Bottcher et al.
Günzel Bernd
Hengstermann Axel
Meier Ralf
Modrow Bernd-Holger
Roos Martin
Evonik Degussa GmbH
Kifle Bruck
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
LandOfFree
Purification of a crude lactam mixture by means of melt... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Purification of a crude lactam mixture by means of melt..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Purification of a crude lactam mixture by means of melt... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4205453