Terpolymers of tetrafluoroethylene, ethylene and fluorovinyl ether and process for producing the same
Patent 4166165 Issued on August 28, 1979. Estimated Expiration Date: 
May 17, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 17, 1998. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3528954 3546186 InventorsAssigneeApplicationNo. 05/906436 filed on 05/17/1978US Classes:522/181, Ether group428/422, Addition polymer is perhalogenated526/206, Material contains halogenated hydrocarbon wherein at least one halogen atom is other than chlorine, and mixtures of water and a halogenated hydrocarbon one ethylenic monomer526/227, Material contains peroxy group compound (-O-O-)526/245, Fluorine containing monomer is a mono-carboxylic acid ester526/247, Fluorine containing monomer is an ether526/87Adding monomerExaminersPrimary: Wong, Harry Jr.Attorney, Agent or FirmInternational ClassesC08F 210/02 (20060101)C08F 210/00 (20060101) C08F 214/00 (20060101) C08F 214/26 (20060101) Foreign Application Priority Data1977-05-20 JPAbstractTerpolymers of tetrafluoroethylene and ethylene essentially consist of components of from 40 to 60 mole % of tetrafluoroethylene, 40 to 60 mole % of ethylene and 0.1 to 10 mole % of fluorovinyl ether component having the formulawherein X is selected from the group consisting of F, OH, OR1 and NR2 R3 and R1 represents a C1 -C10 alkyl group and R2 and R3 respectively represent hydrogen atom or R1 and n represents an integer of 1 to 10.Said terpolymer has a volumetric flow rate of 10 to 500 mm3 /sec. defined in the specification.The terpolymers of tetrafluoroethylene and ethylene are produced by copolymerizing tetrafluoroethylene and ethylene with a molar ratio of C2 F4 /C2 H4 being kept essentially higher than 40/60 in the reactor in the presence of a small amount of a perfluoroalkyl vinyl monomer having the formulawherein X and n are defined above. | |
