C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 68/02 (2006.01) C07C 69/96 (2006.01)
Patent
CA 2319673
The invention concerns a method consisting in making a mixed (meth)acrylic anhydride of formula (I) by reacting an alkaline (meth)acrylate of formula (II) and a chloroformate of formula (III), carrying out said reaction in an aqueous medium and in the absence of amines, the mol ratio chloroformate (III)/alkaline (meth)acrylate (II) being at least equal to 1.15. R<1> represents H or CH3; R<2> represents an alkyl, alkenyl, aryl, alkaryl or aralkyl residue; and M is an alkaline metal.
Image On fabrique un anhydride (méth)acrylique mixte de formule (I) en faisant réagir un (méth)acrylate alcalin de formule (II) et un chloroformiate de formule (III) et, selon l'invention, on effectue ladite réaction en milieu aqueux et en l'absence d'amines, le rapport molaire chloroformiate (III)(méth)acrylate alcalin (II) étant au moins égal à 1,15. R1 représente H ou CH3; R2 représente un reste alkyle, alcényle, aryle, alkaryle ou aralkyle; et M est un métal alcalin.
Fabis Frederic
Paul Jean-Michel
Rault Sylvain
Riondel Alain
Atofina
Elf Atochem S.a.
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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