C - Chemistry – Metallurgy – 07 – F
Patent
C - Chemistry, Metallurgy
07
F
C07F 9/54 (2006.01)
Patent
CA 2622112
A method of preparing an aromatic phosphine monosulfonate in zwitterionic form, such as dicyclohexylphenylphosphine monosulfonate zwitterion, involving contacting an aromatic phosphine with a sulfonating agent to provide a reaction mixture containing aromatic phosphine monosulfonate in acid form and unconverted sulfonating agent; quenching or removing substantially all of the unconverted sulfonating agent; partially neutralizing the aromatic phosphine monosulfonate in acid form to phase separate aromatic phosphine monosulfonate in zwitterionic form as a solid or neat liquid layer; and collecting the zwitterion as a solid or neat liquid. The zwitterion may be neutralized to form the corresponding aromatic phosphine monosulfonate metal salt, which is useful in preparing catalysts for hydroformylation processes.
L'invention concerne un procédé de préparation d'un monosulfonate de phosphine aromatique sous forme zwitterionique, tel que le zwitterion monosulfonate de dicyclohexylphénylphosphine, qui comporte les étapes consistant à: mettre en contact une phosphine aromatique avec un agent sulfonant pour former un mélange réactionnel contenant un monosulfonate de phosphine aromatique sous forme d'acide et un agent sulfonant non transformé; refroidir rapidement ou éliminer pratiquement tout l'agent sulfonant non transformé; neutraliser partiellement le monosulfonate de phosphine aromatique sous forme d'acide pour séparer en phases le monosulfonate de phosphine aromatique sous forme zwitterionique, comme couche solide ou liquide non dilué; et recueillir le zwitterion sous forme solide ou de liquide non dilué. Le zwitterion est neutralisé afin de former le sel métallique de monosulfonate de phosphine aromatique correspondant, qui est utile dans la préparation de catalyseurs pour procédés d'hydroformylation.
Abatjoglou Anthony G.
Morrison Donald L.
Olson Kurt D.
Reed Walter C.
Dow Global Technologies Inc.
Dow Global Technologies Llc
Smart & Biggar
LandOfFree
Process for the monosulfonation of aromatic phosphines, and... 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 monosulfonation of aromatic phosphines, and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the monosulfonation of aromatic phosphines, and... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-2077741