Process to separate epsilon-caprolactam from...

C - Chemistry – Metallurgy – 07 – D

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C07D 201/16 (2006.01) C07D 201/08 (2006.01)

Patent

CA 2269292

Process to separate .epsilon.-caprolactam from 6-aminocaproamide and 6- aminocaproamide oligomers, wherein .epsilon.-caprolactam, 6-aminocaproamide and 6-aminocaproamide oligomers are present in a first aqueous starting mixture, which mixture is contacted with an alcohol extraction solvent, resulting in a first aqueous raffinate phase which is poor in .epsilon.- caprolactam and an alcohol phase which is rich in .epsilon.-caprolactam and which alcohol phase contains 6-aminocaproamide and/or 6-aminocaproamide oligomers, wherein the latter alcohol phase is subsequently contacted with water (backwash water) resulting in an alcohol extract phase poor in 6- aminocaproamide and/or 6-aminocaproamide oligomers and a second aqueous raffinate phase rich in 6-aminocaproamide and/or 6-aminocaproamide oligomers.

L'invention concerne un procédé pour séparer de l'epsilon-caprolactame contenu dans du 6-aminocaproamide et des oligomères de 6-aminocaproamide, selon lequel l'epsilon-caprolactame, le 6-aminocaproamide et les oligomères de 6-aminocaproamide sont présents dans un premier mélange de départ aqueux, ledit mélange étant mis en contact avec un solvant d'extraction d'alcool, ce qui permet d'obtenir une première phase aqueuse de produit raffiné à faible teneur en epsilon-caprolactame et une phase alcool riche en epsilon-caprolactame, cette phase alcool contenant du 6-aminocaproamide et/ou des oligomères de 6-aminocaproamide. Cette phase alcool est ensuite mise en contact avec de l'eau (eau de lavage à contre-courant), ce qui permet d'obtenir une phase d'extrait d'alcool à faible teneur en 6-aminocaproamide et/ou en oligomères de 6-aminocaproamide, ainsi qu'une seconde phase aqueuse de produit raffiné riche en 6-aminocaproamide et/ou en oligomères de 6-aminocaproamide.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Process to separate epsilon-caprolactam from... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process to separate epsilon-caprolactam from..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process to separate epsilon-caprolactam from... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1969675

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.