Process for the preparation of highly purified, dialkyl...

C - Chemistry – Metallurgy – 07 – F

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C07F 9/30 (2006.01) C02F 1/54 (2006.01) C02F 1/62 (2006.01)

Patent

CA 2585291

In a process for the production of dialkylphosphinic acids, especially branched, dialkylphosphinic acids in high purity via the reaction of an alpha olefin with a hypophosphorous acid or a salt thereof, the improvement comprising conducting the reaction in the presence of a stoichiometric excess of the olefin and isolating and purifying the desired dialkylphosphinic acid product by neutralizing the monoalkylphosphinic acid by-product with an aqueous base; removing the aqueous phase in which the neutralized monoalkylphosphinic acid is preferentially solubilized; acidifying the dialkyl product in the organic phase; and isolating the purified product.

La présente invention concerne un procédé pour produire des acides dialkylphosphiniques, notamment des acides dialkylphosphiniques ramifiés présentant une grande pureté, au moyen de la réaction entre une alpha-oléfine et un acide hypophosphoreux ou un sel de celui-ci. L'amélioration consiste à mettre en oeuvre la réaction en présence d'un excès stoechiométrique d'oléfine, à isoler et purifier le produit d'acide dialkylphosphinique souhaité en neutralisant le sous-produit d'acide monoalkylphosphinique avec une base aqueuse, à retirer la phase aqueuse dans laquelle l'acide monoalkylphosphinique neutralisé est de préférence solubilisé, à acidifier le produit de dialkyle dans la phase organique, puis à isoler le produit purifié.

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 for the preparation of highly purified, dialkyl... 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 for the preparation of highly purified, dialkyl..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of highly purified, dialkyl... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1442529

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