Polymers of haloperfluoro and perfluoro ethers
AssigneeThe Dow Chemical Company
InventorsNobuyuki Ishibe, Charles W. Martin, Tien K. Tran
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Abstract
Homolymers prepared from diunsaturated mono- or poly- haloperfluoro or perfluoro ethers, and copolymers prepared from two or more of such ethers, or one or more of such ethers and one or more other ethylenically unsaturated monomers; and articles fabricated from such polymers.
Claims36
A linear homopolymer or copolymer having pendent unsaturated qroups, said homopolymer or copolymer comprising one or more of the ethers described by the formula CF.sub.2 .dbd..dbd.CF--CF.sub.2 --Q--O--CF.dbd..dbd.CF.sub.2, where Q is --G.sub.a --(--O--C.sub.2 J.sub.4 --).sub.b --(--O--Z--).sub.c --, in which G is a substantially fluorinated C.sub.3 -C.sub.7 alkyl radical;
- a is 0 or 1;
- each J is independently fluorine, chlorine, bromine, or a C.sub.1 -C.sub.4 substantially fluorinated alkyl radical on which not more than one substituent is chlorine, provided that not more than two J's are non-fluorine halogen atoms;
- b is 0-6 inclusive;
- Z is a substantially fluorinated C.sub.2 -C.sub.10 alkyl radical;
- and c is 0 or 1;
- provided that sum of a+b+c is greater than 0.
A linear copolymer having pendent unsaturated groups, said copolymer comprising
- (a) one or more ethers described by the formula CF.sub.2 .dbd..dbd.CF--CF.sub.2 --Q--O--CF.dbd..dbd.CF.sub.2, where Q is --G.sub.a --(--O--C.sub.2 J.sub.4 --).sub.b --(--O--Z--).sub.c --, in which G is a substantially fluorinated C.sub.3 -C.sub.7 alkyl radical;
- a is 0 or 1;
- each J is independently fluorine, chlorine, bromine, or a C.sub.1 -C.sub.4 substantially fluorinated alkyl radical on which not more than one substituent is chlorine, provided that not more than two J's are non-fluorine halogen atoms;
- b is 0-6 inclusive;
- Z is a substantially fluorinated C.sub.2 -C.sub.10 alkyl radical;
- and c is 0 or 1;
- provided that sum of a+b+c is greater than 0;
- and
- (b) one or more other ethylenically unsaturated monomers.
A substantially uncrosslinked copolymer comprising perfluoroallylvinyl ether, tetrafluoroethylene and an ethylenically unsaturated monomer carrying an ionic charge or a precursor group which can be converted to an ionically charged substituent.
Dependencies are inferred from the claim text.