Alkyl perfluoro-w-fluoroformyl esters, their preparation and...

Details Alkyl perfluoro-w-fluoroformyl esters, their preparation and... Alkyl perfluoro-w-fluoroformyl esters, their preparation and...

C - Chemistry, Metallurgy

07

C

260/520, 260/560

C07C 59/60 (2006.01) C07C 69/63 (2006.01) C07C 69/708 (2006.01) C07C 69/734 (2006.01)

Patent

CA 1144566

ALKYL PERFLUORO-.omega.-FLUOROFORMYL ESTERS, THEIR PREPARATION AND MONOMERS THEREFROM ABSTRACT OF THE DISCLOSURE Alkyl perfluoro-.omega.-fluoroformyl esters are provided which have the formula: Image wherein R is alkyl of 1-6 carbon atoms, and n is 0-6 (preferably 0). Compounds where n is 0 are prepared by contacting SO3 with a compound of the formula ROOC-CF2-CF2-OR1. Compounds where n is 1-6 are prepared by contacting a compound where n is 0 with hexafluoropropylene oxide. Also provided are polymerizable monomers having the formula: Image wherein Y is -COOR, -COOH, -COOM or -CN, where M is an alkali metal, ammonium or quaternary ammonium and p is 1-5, prepared from alkyl perfluoro-.omega.-fluoroformyl esters of this invention.

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