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US 4,151,340 AGranted
Process for producing fluorocopolymer
AssigneeAsahi Glass Company, Limited
InventorsMasahiko Ichimura, Haruhisa Miyake, Shun-ichi Kodama, Michio Hisasue
Life of this patent
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Abstract
A fluorocopolymer is produced by copolymerizing a fluoroolefin and cyclohexyl vinyl ether in the presence of a polymerization initiator at -30.degree. to +150.degree. C. at a molar ratio of the fluoroolefin to cyclohexyl vinyl ether in charge of 95:5 to 5:95.
Claims4
A fluorocopolymer having high rigidity, and being solvent soluble which comprises
- 25 to 65 mole percent of a component of a fluoroolefin monomer selected from the group consisting of tetrafluoroethylene and chlorotrifluoroethylene;
- 75 to 35 mole percent of a component of a cyclohexylvinyl ether monomer;
- or a mixture of cyclohexylvinyl ether monomer and
- a comonomer selected from the group consisting of olefin, halo olefin, unsaturated carboxylic acid ester, vinyl carboxylate and alkyl vinyl ether monomers;
- wherein said component of said comonomer is present in an amount less than 30 mole percent of the total amount of said fluoroolefin and said cyclohexyl vinyl ether monomers.
2 more elements
Dependencies are inferred from the claim text.