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AssigneesMolly S. Shoichet, R. D. Lousenberg
InventorsRobert D. Lousenberg, Molly S. Shoichet
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Linear copolymers of fluorocarbon and hydrocarbon monomers. The present invention provides linear copolymers and terpolymers of fluorocarbon and hydrocarbon monomers, and particularly the invention provides a linear copolymers, of fluoromonomers, such as tetrafluoroethylene, chlorotrifluoroethylene, or vinylidene fluoride, with hydrocarbon monomers, such as vinyl acetate, acrylic acid ethyl acetate or tertiary butyl acrylate. The copolymers were synthesized by polymerization by a free radical mechanism in supercritical carbon dioxide and they are linear because of synthesis in carbon dioxide. The copolymer composition was controlled by the monomer feed concentration to have between 7 and 71 mol % TFE. Additionally, new and predominantly linear co- and terpolymers were prepared by hydrolysis and trans-esterification of the latter copolymers. Furthermore, neither surfactants nor dispersing agents are required to produce the linear copolymers, but may be used.
A linear copolymer comprising a fluorocarbon repeat unit and a hydrocarbon repeat unit, said fluorocarbon repeat unit being selected from the group consisting of tetrafluoroethylene, trifluoroethylene, chlorotrifluoroethylene, vinylidene fluoride, and vinyl fluoride and said hydrocarbon repeat unit being selected from the group consisting of vinyl acetate, vinyl alcohol, acrylic acid, acrylates and methacrylates.
A linear terpolymer comprising tetrafluoroethylene, vinyl alcohol and vinyl acetate repeat units.
A linear terpolymer comprising chlorotrifluoroethylene, vinyl alcohol and vinyl acetate repeat units.
A linear terpolymer comprising vinylidine fluoride, vinyl alcohol and vinyl acetate repeat units.
A linear terpolymer comprising tetrafluoroethylene, isopropyl acrylate and acrylic acid repeat units.
A linear terpolymer comprising tetrafluoroethylene, isopropyl acrylate and ethyl acrylate repeat units.
A linear copolymer comprising fluorocarbon monomers and hydrocarbon monomers, said fluorocarbon monomers having a formula CF2═CR1 R2, wherein C is carbon, F is fluorine, R1 is one of hydrogen, halogen, alkyl, aryl, haloalkyl, alkoxy, haloalkoxy, haloaryl and wherein R2 is one of hydrogen and halogen, said hydrocarbon monomers having a formula CH2═CR3CO2R4, wherein R3 is one of hydrogen and an alkyl, and R4 is one of hydrogen, an alkyl group and a haloalkyl group.
A linear copolymer comprising fluorocarbon monomers and hydrocarbon monomers, fluorocarbon monomers having a formula, CF2═CR1 R2, wherein C is carbon, F is fluorine, R1 is selected from the group consisting of hydrogen, halogen, alkyl, aryl, haloalkyl, alkoxy, haloalkoxy, haloaryl and R2 is selected from the group consisting of hydrogen, halogen, said hydrocarbon monomers having a formula, CH2═CR3OC(O)R4 wherein R3 is one of hydrogen and alkyl, and R4 is an alkyl group.
A method of synthesizing a linear copolymer comprising fluorocarbon and hydrocarbon repeat units, the method comprising mixing a fluorocarbon monomer, an initiator, a hydrocarbon monomer and a polymerization medium comprising liquid or supercritical carbon dioxide and copolymerizing said fluorocarbon monomer and said hydrocarbon monomer.
A method of synthesizing linear terpolymers, comprising;
Dependencies are inferred from the claim text.