Process for producing perfluorinated vinyl ether having ester group
AssigneeAsahi Glass Company, Limited
InventorsSeiji Munekata, Hiroshi Ukihashi, Masaaki Yamabe, Isamu Kaneko
Life of this patent
Estimating the term…
Abstract
A perfluorinated vinyl ether having an ester group which has the formula CF.sub.2 .dbd.CFOCF.sub.2 (A).sub.p (CF.sub.2).sub.q CO.sub.2 R wherein A represents a c.sub.1 -C.sub.10 divalent perfluorinated radical; p represents 0 or 1; q represents 0 or 1 to 3; and R represents an organic radical, is produced by pyrolyzing (thermally decomposing) an asymmetric diacyl halide having the formula ##STR1## wherein X represents --F, --Cl or --Br and then, reacting the resulting perfluorinated vinyl ether having a halocarbonyl group which has the formula CF.sub.2 .dbd.CFOCF.sub.2 (A).sub.p (CF.sub.2) COX with an alkohol having the formula ROH
Claims8
A process for producing a perfluorinated vinyl ether having an ester group which has the formula ##STR20## wherein R.sub.F represents a C.sub.1-4 divalent perfluorinated radical;
- n represents 0 or 1;
- m represents 0 or 1;
- q represents 0 or 1 to 3;
- and R represents an organic radical which comprises pyrolyzing an assymetric diacyl halide which has the formula ##STR21## wherein X represents a halogen atom selected from the group consisting of F, Cl and Br, in the vapor phase and with addition of water in an amount corresponding to not more than the saturated vapor pressure of water at room temperature to produce a perfluorinated vinyl ether having a halocarbonyl group which has the formula ##STR22## and then reacting the perfluorinated vinyl ether having a halocarbonyl group with an alcohol which has the formula ROH.
A process for producing a perfluorinated vinyl ether having an ester group which has the formula ##STR23## wherein R.sub.F represents a C.sub.1-4 divalent perfluorinated radical;
- n represents 0 or 1;
- m represents 0 or 1;
- q represents 0 or 1 to 3;
- and R represents an organic radical which comprises pyrolyzing an assymetric diacyl fluoride which has the formula ##STR24## in the vapor phase and with addition of water in an amount corresponding to not more than the saturated vapor pressure of water at room temperature to produce a perfluorinated vinyl ether having a fluorocarbonyl group which has the formula ##STR25## and then reacting the perfluorinated vinyl ether having a fluorocarbonyl group with an alcohol which has the formula ROH.
Dependencies are inferred from the claim text.