Process for the preparation of vinylphosphonic acid...

Details Process for the preparation of vinylphosphonic acid... Process for the preparation of vinylphosphonic acid...

C - Chemistry, Metallurgy

07

F

260/537.8

C07F 9/42 (2006.01) C07F 9/38 (2006.01) C07F 9/40 (2006.01)

Patent

CA 1175060

ABSTRACT OF THE DISCLOSURE Process for the preparation of vinylphosphonic acid dichloride and 2-chloroethanephosphonic acid dichloride, by heating a 2-acetoxyethanephosphonic acid dialkyl ester of the general formula Image wherein the R groups are the same or different and are selected from alkyl groups having 1 to 4 carbon atoms, in the presence of acid or basic catalysts at 150 - 270°C with elimination of an alkyl acetate, reacting the resulting reaction mixture with water at temperatures between 130 - 230°C while simultaneously distilling off the alcohol formed, and reacting the crude vinylphosphonic acid thus formed with phosgene in the presence of catalysts and also in the presence of phosphonic acid dichlorides.

398897

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1305109