WO2019073934A1 - 含フッ素弾性共重合体組成物、塗料、および塗装物品 - Google Patents
含フッ素弾性共重合体組成物、塗料、および塗装物品 Download PDFInfo
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- WO2019073934A1 WO2019073934A1 PCT/JP2018/037457 JP2018037457W WO2019073934A1 WO 2019073934 A1 WO2019073934 A1 WO 2019073934A1 JP 2018037457 W JP2018037457 W JP 2018037457W WO 2019073934 A1 WO2019073934 A1 WO 2019073934A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F214/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen
- C08F214/18—Monomers containing fluorine
- C08F214/26—Tetrafluoroethene
- C08F214/265—Tetrafluoroethene with non-fluorinated comonomers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08L27/18—Homopolymers or copolymers or tetrafluoroethene
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/20—Diluents or solvents
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
- C08J3/09—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in organic liquids
- C08J3/091—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in organic liquids characterised by the chemical constitution of the organic liquid
- C08J3/093—Halogenated hydrocarbons
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
- C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
- C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C09D127/18—Homopolymers or copolymers of tetrafluoroethene
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J127/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Adhesives based on derivatives of such polymers
- C09J127/02—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
- C09J127/12—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Adhesives based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C09J127/18—Homopolymers or copolymers of tetrafluoroethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F214/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen
- C08F214/18—Monomers containing fluorine
- C08F214/26—Tetrafluoroethene
- C08F214/262—Tetrafluoroethene with fluorinated vinyl ethers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2800/00—Copolymer characterised by the proportions of the comonomers expressed
- C08F2800/10—Copolymer characterised by the proportions of the comonomers expressed as molar percentages
Definitions
- the present invention relates to a fluorine-containing elastic copolymer composition, a paint, and a coated article.
- a fluorine-containing elastic copolymer such as a tetrafluoroethylene-perfluoro (alkyl vinyl ether) copolymer is excellent in chemical resistance, solvent resistance, heat resistance and the like.
- a fluorine-containing elastic copolymer In order to apply a fluorine-containing elastic copolymer to the surface of a substrate, there is known a technique in which a fluorine-containing elastic copolymer having excellent solvent resistance is dissolved in a solvent to form a solution (patent documents 1 to 3). .
- adding various additives and making it into a copolymer composition is known (patent document 4).
- Patent documents 1 and 2 disclose a solution containing a curable perfluoropolymer, a curing agent, and a fluorinated solvent.
- Patent Document 3 discloses a fluorine-containing elastomer coating composition containing a fluorine-containing elastomer and a fluorine-based solvent.
- Patent Document 4 discloses a carbon fiber composite material in which carbon nanofibers are dispersed in perfluoroelastomer.
- Fluorinert (registered trademark) FC-43 exemplified as a fluorinated solvent in Patent Documents 1 and 2 has a high boiling point of about 174 ° C. Therefore, in the solutions described in Patent Documents 1 and 2, the fluorinated solvent is difficult to be removed by evaporation. Therefore, when the solution described in Patent Literatures 1 and 2 is applied to the surface of the substrate, drying takes time and the workability is reduced. Further, Fluorinert (registered trademark) FC-77 exemplified as a fluorine-based solvent in Patent Document 3 includes a compound having a perfluorohydrocarbon group having 8 carbon atoms.
- the present invention is excellent in the solubility of the fluorinated elastic copolymer in a solvent, is easy to remove the solvent, is easy to obtain a solvent, does not give an excessive shear force, does not give a long-time shear force, etc.
- An object of the present invention is to provide a fluorine-containing elastic copolymer composition in which additives and the like are dispersed.
- a fluorinated elastic copolymer having a unit based on tetrafluoroethylene and a unit based on a compound represented by the following formula 1 and a fluorinated solvent has at least one perfluorohydrocarbon group, and the perfluorocarbon group having the largest number of carbons has 3 to 7 carbon atoms, The boiling point of the fluorinated solvent is 50 to 160 ° C.,
- the fluorine-containing elastic copolymer composition characterized in that the fluorine atom content calculated by the following formula 2 of the fluorine-containing solvent is 69 to 80% by mass.
- CF 2 CFOR f1 equation 1
- R f1 is a C 1-10 perfluoroalkyl group.
- Fluorine atom content rate (mass%) (19 ⁇ number of fluorine atoms of fluorine-containing solvent / molecular weight of fluorine-containing solvent) ⁇ 100 Formula 2
- the content of the crosslinking agent is 0.3 to 10 parts by mass with respect to 100 parts by mass of the fluorinated elastic copolymer, When the crosslinking assistant is contained, the content of the crosslinking assistant is 0.1 to 10 parts by mass with respect to 100 parts by mass of the fluorinated elastic copolymer, as described in [3].
- Polymer composition. [5] The fluorine-containing copolymer composition according to any one of [1] to [4], further comprising at least one of a filler and a reinforcing material. [6] The fluorine-containing copolymer composition according to [5], wherein the total content of the filler and the reinforcing material is 0.01 to 100 parts by mass with respect to 100 parts of the fluorine-containing copolymer.
- a paint comprising the fluorinated elastic copolymer composition according to any one of [1] to [6].
- An adhesive comprising the fluorinated elastic copolymer composition according to any one of [1] to [6].
- a coated article having a coating film free of the fluorine-containing solvent, which is formed from the paint according to [7].
- the coating according to [9] wherein the coating is a coating containing a crosslinking agent or a crosslinking agent and a crosslinking aid, and the coating is a crosslinked fluorine-containing elastic copolymer. Painted articles.
- a cross-linking agent or cross-linking agent, a cross-linking coagent, a fluorine-containing elastic copolymer having a unit based on tetrafluoroethylene and a unit based on a compound represented by the following formula 1, and the following fluorine-containing solvent are mixed A fluorine-containing elastic copolymer composition and then removing the fluorine-containing solvent, thereby producing a composition containing no fluorine-containing solvent,
- the fluorine-containing solvent has at least one perfluorohydrocarbon group, and the perfluorocarbon group having the largest number of carbons has 3 to 7 carbon atoms,
- the boiling point of the fluorinated solvent is 50 to 160 ° C.
- the method for producing a composition which does not contain the fluorine-containing solvent, wherein the fluorine atom content of the fluorine-containing solvent calculated by the following formula 2 is 69 to 80% by mass.
- CF 2 CFOR f1 equation 1
- R f1 is a C 1-10 perfluoroalkyl group.
- Fluorine atom content rate (mass%) (19 ⁇ number of fluorine atoms of fluorine-containing solvent / molecular weight of fluorine-containing solvent) ⁇ 100
- Formula 2 [12] The method for producing a composition containing no fluorine-containing solvent according to [11], wherein the fluorine-containing elastic copolymer composition further contains at least one of a filler and a reinforcing material.
- the fluoroelasticity is excellent in the solubility of the fluorinated elastic copolymer in the solvent, easy to remove the solvent, easy to obtain the solvent, and dispersed with additives etc. without giving excessive shearing force.
- a copolymer composition is obtained.
- a coated article can be obtained without reducing the workability.
- a composition having excellent dispersibility of the component can be obtained.
- the composition which does not contain the fluorine-containing solvent obtained by removing the fluorine-containing solvent from the fluorine-containing elastic copolymer composition contains a crosslinking agent, the dispersibility of the component can be obtained by crosslinking the composition. Cross-linked product is obtained.
- the meanings of the following terms in the present specification are as follows.
- the “unit” means an atomic group directly formed by polymerization of one monomer molecule in the copolymer, or an atomic group obtained by chemical conversion of a part of the atomic group.
- the “perfluorohydrocarbon group” refers to a group in which all hydrogen atoms of the hydrocarbon group are substituted by fluorine atoms.
- the perfluorohydrocarbon group in the perfluoroalkane is an atomic group obtained by removing one fluorine atom from the perfluoroalkane.
- Boiling point is a value measured at atmospheric pressure.
- etheric oxygen atom refers to an oxygen atom that forms an ether bond (-O-) between carbon atoms and carbon atoms.
- the fluorine-containing elastic copolymer composition of the present invention comprises a specific fluorine-containing elastic copolymer and a specific fluorine-containing solvent (hereinafter also referred to as a specific fluorine-containing solvent).
- the fluorine-containing elastic copolymer composition of the present invention may contain a crosslinking agent, a crosslinking aid, other additives, and the like as long as the effects of the present invention are not impaired. Further, the fluorine-containing elastic copolymer composition of the present invention may contain two or more of the above-mentioned specific fluorine-containing elastic copolymers, and may contain two or more of the specified fluorine-containing solvents.
- the fluorinated elastic copolymer in the present invention is referred to as a unit based on tetrafluoroethylene (hereinafter referred to as TFE) (hereinafter referred to as TFE unit) and a unit based on compound 1 described later (hereinafter referred to as PAVE unit). And.
- the fluorine-containing elastic copolymer is a unit (hereinafter referred to as a unit d and a unit based on a fluorine-containing monomer having a unit (hereinafter referred to as a unit c) based on a compound 3 described later and two or more polymerizable unsaturated bonds. Note) may be included.
- the fluorine-containing elastic copolymer may further have a unit based on another monomer (hereinafter referred to as unit e), as needed, as long as the effects of the present invention are not impaired.
- the PAVE unit is a unit based on a compound 1 represented by the following formula 1.
- CF 2 CFOR f1 equation 1
- R f1 is a C 1-10 perfluoroalkyl group.
- the perfluoroalkyl group may be linear or branched.
- the number of carbon atoms of R f1 is preferably 1 to 5, and more preferably 1 to 3, from the viewpoint of improving the productivity of the fluorinated elastic copolymer.
- compound 1 examples include the following compounds.
- CF 2 CFOCF 3 (PMVE)
- CF 2 CFOCF 2 CF 3 (PEVE)
- CF 2 CFOCF 2 CF 2 CF 3 (PPVE)
- CF 2 CFOCF 2 CF 2 CF 3
- PMVE, PEVE, and PPVE are preferable from the viewpoint of improving the productivity of the fluorinated elastic copolymer.
- the unit c is a unit based on a compound 3 represented by the following formula 3.
- the rubber physical properties at low temperatures hereinafter also referred to as low temperature characteristics
- CF 2 CF (OR f2 ) n- (OCF 2 ) m -OR f5 Equation 3
- R f2 is a C 2 to C 4 perfluoroalkyl group
- R f 5 is a C 1 to 4 perfluoroalkyl group
- n is an integer of 0 to 3
- m is an integer of 0 to 4
- n + m is an integer of 1 to 7.
- n and m in the equation 3 represent the numbers of (OR f2 ) and (OCF 2 ), respectively. Therefore, Formula 3 does not represent the order of arrangement of (OR f2 ) n and (OCF 2 ) m, and when each of n and m is 2 or more, (OR f 2 ) n , (OCF 2 ) m does not represent the block arrangement of (OR f2 ) or (OCF 2 ).
- the perfluoroalkylene group of R f2 and the perfluoroalkyl group of R f5 are preferably linear.
- the carbon number of R f2 is preferably 2 or 3.
- the carbon number of R f5 is preferably 1 to 3.
- n is 2 or more, the plurality of R f2 may be the same or different.
- n is 0, m is preferably 3 or 4.
- n is 1, m is preferably 2 to 4.
- n is 2 or 3, m is preferably 0.
- n is preferably 1 to 3.
- the carbon number of R f2 and R f5 and n and m are within the above ranges, the low temperature characteristics when the fluorinated elastic copolymer is a crosslinked rubber article are further excellent, and the production of the fluorinated elastic copolymer Improves the quality.
- compound 3 include the following compounds.
- CF 2 CF-OCF 2 CF 2- (OCF 2 ) 4 -OCF 3 (C9PEVE)
- CF 2 CF-OCF 2 CF 2- (OCF 2 ) 2 -OCF 3 (C7PEVE)
- CF 2 CF- (OCF 2 CF 2 ) 2 -OCF 2 CF 3 (EEAVE)
- CF 2 CF- (OCF 2 CF 2 ) 3 -OCF 2 CF 3
- CF 2 CF-OCF 2 -OCF 3
- CF 2 CF-OCF 2 -OCF 2 CF 3
- CF 2 CF- (OCF 2 CF (CF 3 )) 2 -OCF 2 CF 2 CF 3
- CF 2 CF- (OCF 2 ) 2 -OCF 3
- Compound 3 C9PEVE, C7PEVE, EEAVE and EEEAVE are superior in that the low temperature characteristics when the fluorinated elastic copoly
- the unit d is a unit based on a fluorine-containing monomer having two or more polymerizable unsaturated bonds.
- the fluorine-containing elastic copolymer has the unit d, the low-temperature characteristics are further excellent while maintaining the rubber physical properties when the fluorine-containing elastic copolymer is a crosslinked rubber article.
- the number of polymerizable unsaturated bonds is preferably 2 to 6, more preferably 2 or 3, and particularly preferably 2.
- the fluorine-containing monomer having two or more polymerizable unsaturated bonds is preferably a perfluoro compound.
- R f3 is a perfluoroalkylene group having 1 to 25 carbon atoms, or a group having one or more etheric oxygen atoms between carbon atoms of the perfluoroalkylene group having 2 to 25 carbon atoms.
- the perfluoroalkylene group may be linear or branched.
- the carbon number of R f3 is preferably 3 or 4 from the viewpoint that the low-temperature properties are further excellent while maintaining the rubber physical properties when the fluorinated elastic copolymer is used as a crosslinked rubber article.
- the unit e is a unit based on another monomer.
- a monomer having a fluorine atom and a nitrile group, and a monomer having a fluorine atom and a halogen atom other than a fluorine atom are exemplified.
- CF 2 CFO (CF 2 CF (CF 3 ) O) p (CF 2 ) q CN formula 5
- p is an integer of 0 to 5
- q is an integer of 1 to 5.
- CF 2 CFO (CF 2 ) r OCF (CF 3 ) CN formula 6
- r is an integer of 2 to 4.
- CF 2 CFO (CF 2 ) 5
- CF 2 CFOCF 2 CF (CF 3 ) O (CF 2 ) 2
- Specific examples of compound 6 include the following compounds.
- CF 2 CFO (CF 2) 3 OCF (CF 3) CN
- Examples of the monomer having a fluorine atom and a halogen atom other than a fluorine atom include bromotrifluoroethylene, iodotrifluoroethylene and the like.
- the proportion of TFE units in the fluorine-containing copolymer of the present invention is preferably 35 to 75 mol%, more preferably 40 to 75 mol%, based on the total of all the units constituting the fluorine-containing elastic copolymer. 50 to 75 mol% is more preferable.
- the proportion of PAVE units is preferably 25 to 75 mol%, more preferably 25 to 60 mol%, and still more preferably 25 to 50 mol%, based on the total of all the units constituting the fluorinated elastic copolymer.
- the proportion of the unit c is preferably 57 mol% or less, more preferably 3 to 40 mol%, based on the total of all the units constituting the fluorine-containing elastic copolymer. Preferably, 5 to 30 mol% is more preferable.
- the proportion of the unit d is preferably 1 mol% or less, based on the total of all the units constituting the fluorine-containing elastic copolymer, and is 0.01 to 0.5.
- the mole% is more preferable, and 0.05 to 0.3 mole% is more preferable.
- the proportion of the unit e is preferably 5 mol% or less, more preferably 3 mol% or less, based on the total of all the units constituting the fluorine-containing elastic copolymer. And 2 mol% or less is more preferable.
- the proportions of TFE unit, PAVE unit, unit c, unit d and unit e are within the above range, the low temperature characteristics are further excellent while maintaining the rubber physical properties when the fluorinated elastic copolymer is a crosslinked rubber article.
- the fluorine-containing elastic copolymer in the present invention preferably further has an iodine atom, from the viewpoint of excellent crosslinkability of the fluorine-containing elastic copolymer.
- the iodine atom is preferably bonded to the end of the polymer chain of the fluorinated elastic copolymer.
- end of polymer chain is a concept including both ends of the main chain and ends of branched chains.
- the content of iodine atom is preferably 0.01 to 1.5% by mass, based on the total weight of the fluorine-containing elastic copolymer, and 0.01 to 1. 0 mass% is more preferable. If the content of iodine atoms is within the above range, the crosslinkability of the fluorinated elastic copolymer is further excellent.
- the fluorinated elastic copolymer in the present invention can be produced by polymerizing a monomer component containing TFE units and PAVE units.
- the monomer component may optionally contain a unit c, a unit d, and a unit e.
- a radical polymerization method As a polymerization method, a radical polymerization method is preferable.
- a radical polymerization start source a radical polymerization initiator, heating, ionizing radiation irradiation, etc. are illustrated. Among these, a radical polymerization initiator is preferable from the viewpoint of being excellent in the productivity of the fluorinated elastic copolymer.
- the radical polymerization initiator is not particularly limited.
- a radical polymerization initiator used for the emulsion polymerization mentioned later a water-soluble initiator is preferable.
- Water-soluble initiators include persulfates (ammonium persulfate, sodium persulfate, potassium persulfate etc.), hydrogen peroxide, peroxides (disuccinic acid peroxide, diglutaric acid peroxide, etc.), azo compounds (eg Redox initiators comprising a combination of azobisisobutylamidine dihydrochloride, etc., persulfuric acid or hydrogen peroxide and a reducing agent such as sodium bisulfite or sodium thiosulphate; Examples include inorganic initiators of a system in which a monoiron salt, silver sulfate and the like are further allowed to coexist.
- the amount of the radical polymerization initiator is preferably 0.0001 to 5 parts by mass, and more preferably 0.001 to 2 parts by mass
- R f4 I 2 ... Formula 7 R f4 IBr ⁇ Formula 8
- R f4 is a polyfluoroalkylene group having 1 to 16 carbon atoms.
- the polyfluoroalkylene group may be linear or branched.
- a perfluoroalkylene group is preferable.
- Examples of compound 7 include 1,4-diiodoperfluorobutane, 1,6-diiodoperfluorohexane, 1,8-diiodoperfluorooctane and the like.
- Examples of the compound 8 include 1-iodo 4-bromoperfluorobutane, 1-iodo-6-bromoperfluorohexane, 1-iodo-8-bromoperfluorooctane and the like.
- the amount of chain transfer agent is appropriately set based on the chain transfer constant of the chain transfer agent.
- the amount of the chain transfer agent is preferably 0.01 to 5 parts by mass, and more preferably 0.05 to 2 parts by mass with respect to 100 parts by mass of the monomer component. .
- the polymerization method may, for example, be an emulsion polymerization method, a solution polymerization method, a suspension polymerization method or a bulk polymerization method.
- the emulsion polymerization method is preferable in terms of adjustment of molecular weight and copolymerization composition and excellent productivity.
- monomer components are polymerized in an aqueous medium containing an emulsifier.
- the aqueous medium include water, and a mixture of water and a water-soluble organic solvent.
- the water-soluble organic solvent include tert-butanol, propylene glycol, dipropylene glycol, dipropylene glycol monomethyl ether, tripropylene glycol and the like, and from the viewpoint that the polymerization rate of the monomer is not reduced, tert-butanol, dipropylene Glycol monomethyl ether is preferred.
- the aqueous medium contains a water-soluble organic solvent
- the dispersibility of the monomer and the dispersibility of the fluorinated elastic copolymer are excellent, and the productivity of the fluorinated elastic copolymer is excellent.
- the content of the water-soluble organic solvent is preferably 1 to 40 parts by mass, and more preferably 3 to 30 parts by mass with respect to 100 parts by mass of water.
- an emulsifier As an emulsifier, an anionic emulsifier, a nonionic emulsifier, a cationic emulsifier etc. are illustrated. Among these, anionic emulsifiers are preferable in that the mechanical and chemical stability of the latex is further excellent.
- an emulsifier having a hydrocarbon group sodium lauryl sulfate, sodium dodecylbenzene sulfonate, etc.
- an emulsifier having a fluorine atom ammonium perfluorooctanoate, sodium perfluorooctanoate, ammonium perfluorohexanoate, the following formula 9
- etc., Represented is illustrated.
- X and Y are each a fluorine atom or a linear or branched perfluoroalkyl group having 1 to 3 carbon atoms
- A is a hydrogen atom, an alkali metal or NH 4
- t is 2 to 10
- u is an integer of 0 to 3.
- Examples of the compound 9 include the following compounds. C 2 F 5 OCF 2 CF 2 OCF 2 COONH 4 F (CF 2) 3 O ( CF (CF 3) CF 2 O) 2 CF (CF 3) COONH 4 F (CF 2 ) 3 OCF 2 CF 2 OCF 2 COONH 4 F (CF 2) 3 O ( CF 2 CF 2 O) 2 CF 2 COONH 4 F (CF 2) 4 OCF 2 CF 2 OCF 2 COONH 4, F (CF 2) 4 O ( CF 2 CF 2 O) 2 CF 2 COONH 4 F (CF 2) 3 OCF 2 CF 2 OCF 2 COONa, F (CF 2) 3 O ( CF 2 CF 2 O) 2 CF 2 COONa F (CF 2) 4 OCF 2 CF 2 OCF 2 COONa F (CF 2) 4 OCF 2 CF 2 OCF 2 COONa F (CF 2) 4 OCF 2 CF 2 OCF 2 COONa F (CF 2) 4 O ( CF 2 CF 2 O) 2 CF 2 COONa F
- ammonium perfluorooctanoate C 2 F 5 OCF 2 CF 2 OCF 2 COONH 4 , F (CF 2 ) 4 OCF 2 CF 2 OCF 2 COONH 4 , and F (CF 2 ) 3 OCF 2 CF 2 OCF 2 COONH 4 is preferred.
- the amount of the emulsifier is preferably 0.01 to 15 parts by mass, and more preferably 0.1 to 10 parts by mass with respect to 100 parts by mass of the aqueous medium.
- the emulsion polymerization method provides a latex containing a fluorinated elastic copolymer.
- the fluoroelastic copolymer can be separated from the latex by aggregation.
- Examples of the aggregation method include methods by addition of metal salts, addition of inorganic acids (such as hydrochloric acid), mechanical shearing, freeze-thaw and the like.
- the polymerization conditions are appropriately selected depending on the monomer composition and the decomposition temperature of the radical polymerization initiator.
- the polymerization pressure is preferably 0.1 to 20 MPa [gauge], more preferably 0.3 to 10 MPa [gauge], and still more preferably 0.3 to 5 MPa [gauge].
- the polymerization temperature is preferably 0 to 100 ° C., more preferably 10 to 90 ° C., and still more preferably 20 to 80 ° C.
- the polymerization time is preferably 1 to 72 hours, more preferably 1 to 24 hours, and still more preferably 1 to 12 hours.
- the emulsion polymerization method provides a latex containing a fluorinated elastic copolymer.
- the fluoroelastic copolymer can be separated from the latex by aggregation.
- As the aggregation method methods by addition of metal salt, addition of acid, mechanical shearing, freeze-thaw and the like are exemplified.
- the acid include nitric acid, sulfuric acid, oxalic acid, and hydrofluoric acid. Among these, nitric acid or sulfuric acid is preferred in view of its lower corrosiveness to metals.
- the aggregation treatment with an acid is carried out by mixing a latex containing a fluorine-containing elastic copolymer with an aqueous solution containing an acid.
- the aggregated fluoro-containing elastic copolymer is recovered by filtration or the like and then washed with a liquid medium. It does not specifically limit as a liquid medium used for washing
- the washed fluorinated elastic copolymer may be dried under reduced pressure (vacuum drying) from the viewpoint of suppressing the deterioration of the fluorinated elastic copolymer due to heat.
- the drying temperature is not particularly limited, but preferably less than 100 ° C.
- the drying temperature is the temperature of the atmosphere in the dryer.
- the pressure at the time of drying is not particularly limited, but is preferably 50 kPa or less. By setting the pressure at the time of drying to 50 kPa or less, even if the drying temperature is lowered, the fluorinated elastic copolymer can be sufficiently dried.
- the specified fluorine-containing solvent in the present invention is a solvent which dissolves the fluorine-containing elastic copolymer.
- the specified fluorine-containing solvent has a perfluorohydrocarbon group.
- the perfluorohydrocarbon group may be a chain perfluorocarbon group or a cyclic perfluorohydrocarbon group.
- the chain perfluoro hydrocarbon group may be linear or branched. Examples of the chain perfluoro hydrocarbon group include a perfluoroalkyl group, a perfluoroalkylene group, a perfluorovinylalkyl group, a perfluorovinylalkylene group and the like.
- the carbon number of the most carbon-rich perfluorohydrocarbon group in the perfluorohydrocarbon group is 3 to 7.
- the solubility of the fluorinated elastic copolymer in the specified fluorinated solvent is excellent.
- the fluorine-containing solvent is easy to obtain that the said carbon number is seven or less.
- the carbon number is 6 or less, the boiling point of the specific fluorine-containing solvent tends to be low and it is easy to remove.
- the boiling point of the specified fluorinated solvent is 50 to 160.degree. It is easy to obtain a fluorine-containing solvent that the boiling point of a specific fluorine-containing solvent is 50 ° C. or higher. When the boiling point of the fluorinated solvent is 160 ° C. or less, the specified fluorinated solvent is easily removed by evaporation.
- the fluorine atom content calculated by the following formula 2 of the specific fluorine-containing solvent is 69 to 80% by mass.
- the fluorine atom content is 69% by mass or more, the solubility of the fluorinated elastic copolymer in the specified fluorinated solvent is excellent.
- the fluorine atom content is 80% by mass or less, it is easy to obtain a specific fluorine-containing solvent.
- Fluorine atom content rate (mass%) (19 ⁇ number of fluorine atoms of fluorine-containing solvent / molecular weight of fluorine-containing solvent) ⁇ 100 Formula 2
- the specific fluorine-containing solvent is preferably at least one selected from the group consisting of fluorine-containing compounds having a nitrogen atom, hydrofluorocarbons, and hydrofluoroethers.
- the specified fluorine-containing solvent is at least one selected from the group consisting of fluorine-containing compounds having nitrogen atoms, hydrofluorocarbons, and hydrofluoroethers, the solubility of the fluorine-containing elastic copolymer in the specified fluorine-containing solvent is excellent. There is a tendency.
- the compound 10 represented by following formula 10 is illustrated as a specific example of the specific fluorine-containing solvent which has a nitrogen atom.
- Florinert (registered trademark) FC-770 manufactured by 3M is exemplified.
- hydrofluorocarbons include 1,1,1,2,2,2,3,3,4,4-nonafluorohexane, 1,1,1,2,2,3,3,4,4,5, Examples are 5,6,6-tridecafluorohexane and 1,1,1,2,2,3,3,4,4,5,5,6,6-tridecafluorooctane.
- 1,1,1,2,2,3,3,4,4,5,5,6,6-tridecafluorohexane include C 6 F 13 H (Asahi Glass Co., Ltd., Asahi Klin (registered trademark) ) AC-2000), 1,1,1,2,2,2,3,3,4,4,5,5,6,6-tridecafluorooctane, which is a commercial product of C 6 F 13 C 2 H 5 ( Asahi Glass Co., Ltd., Asahi Klin (registered trademark) AC-6000) is exemplified.
- hydrofluoroether C 2 F 5 CF (OCH 3) CF (CF 3) 2 (3M Co., Novec (TM) 7300) are exemplified.
- the content of the fluorinated elastic copolymer in the fluorinated elastic copolymer composition is not particularly limited.
- the amount of the fluorinated elastic copolymer is preferably 5 to 40 parts by mass, more preferably 5 to 30 parts by mass, and still more preferably 8 to 25 parts by mass with respect to 100 parts by mass of the specified fluorinated solvent.
- the content of the fluorinated elastic copolymer is less than or equal to the above upper limit value, the fluorinated elastic copolymer is easily dissolved in the specified fluorinated solvent.
- the content of the fluorinated elastic copolymer is equal to or more than the lower limit value, the specific fluorinated solvent is easily removed from the fluorinated elastic copolymer composition.
- the fluorinated elastic copolymer composition of the present invention may contain a fluorinated solvent or non-fluorinated solvent other than the specified fluorinated solvent.
- a fluorinated solvent or non-fluorinated solvent other than the specified fluorinated solvent When the fluorine-containing solvent other than the specific fluorine-containing solvent or the non-fluorine-containing solvent is contained, the content thereof is an amount which does not greatly reduce the solubility of the fluorine-containing elastic copolymer by the specific fluorine-containing solvent.
- a solvent having a boiling point of 50 ° C. or less or a solvent which azeotropes with the specific fluorine-containing solvent is preferable.
- the volume ratio of the specified fluorinated solvent is determined by the specified fluorinated solvent, the specified fluorinated solvent other than the specified fluorinated solvent 90% or more is preferable with respect to the total volume of a fluorine solvent, 95% or more is more preferable, and 98% or more is still more preferable.
- the fluorinated elastic copolymer composition of the present invention contains a fluorinated solvent other than the specified fluorinated solvent or a non-fluorinated solvent
- removing the specified fluorinated solvent means other than the specified fluorinated solvent It means that fluorine-containing solvents and non-fluorinated solvents of are also removed.
- Crosslinking agent When the fluorinated elastic copolymer composition further contains a crosslinking agent, physical properties such as hardness and heat resistance of a coating film or the like formed from the fluorinated elastic copolymer composition tend to be excellent.
- the crosslinking agent include organic peroxides, polyols, amines and triazines. Among these, organic peroxides are preferable in terms of excellent productivity, heat resistance, and chemical resistance.
- dialkyl peroxides di-tert-butyl peroxide, tert-butyl cumyl peroxide, dicumyl peroxide, ⁇ , ⁇ -bis (tert-butylperoxy) -p-diisopropylbenzene, 2,5-dimethyl- 2,5-bis (tert-butylperoxy) hexane, 2,5-dimethyl-2,5-bis (tert-butylperoxy) hexine-3 and the like, 1,1-di (tert-butylperoxy) -3, 3,5-Trimethylcyclohexane, 2,5-dimethylhexane-2,5-dihydroperoxide, benzoyl peroxide, tert-butylperoxybenzene, 1,3-bis (tert-butylperoxyisopropyl) benzene, 2,5-dimethyl- 2,5-di (benzoylperoxy)
- the content of the crosslinking agent is preferably 0.3 to 10 parts by mass with respect to 100 parts by mass of the fluorinated elastic copolymer, and 0.3 to 10 parts by mass. 5 parts by mass is more preferable, and 0.5 to 3 parts by mass is more preferable.
- the content of the crosslinking agent is in the above range, the heat resistance, chemical resistance and the like of the fluorinated elastic copolymer composition tend to be excellent.
- Crosslinking assistant When the fluorine-containing elastic copolymer composition contains a crosslinking agent, it is preferable to further contain a crosslinking aid. When the fluorinated elastic copolymer composition further contains a crosslinking coagent, the crosslinking efficiency is higher.
- crosslinking assistant As a crosslinking assistant, triallyl cyanurate, triallyl isocyanurate, trimethallyl isocyanurate, 1,3,5-triacryloyl hexahydro-1,3,5-triazine, triallyl trimellitate, m-phenylenediamine Bismaleimide, p-quinonedioxime, p, p'-dibenzoylquinone dioxime, dipropargyl terephthalate, diallyl phthalate, N, N ', N'',N'''-tetraallyl terephthalamide, vinyl group-containing Examples thereof include bis-olefin compounds such as siloxane oligomers (polymethylvinylsiloxane, polymethylphenylvinylsiloxane and the like) and fluorine-containing aromatic compounds having two or more vinyl groups or allyl groups bonded to an aromatic ring.
- siloxane oligomers polymethyl
- triallyl cyanurate triallyl isocyanurate, trimethallyl isocyanurate, bis-olefin compounds, and at least one cross-linking coagent selected from the above-mentioned fluorine-containing aromatic compounds are preferable, and triallyl isocyanurate is particularly preferable. preferable.
- the fluorine-containing aromatic compound which is the crosslinking assistant is a compound having two or more groups represented by the following formula 11, and two or more of the groups represented by the following formula 11 are fluorine-containing aromatic rings And compounds bound thereto are exemplified.
- R ⁇ 1 >, R ⁇ 2 >, R ⁇ 3 > and R ⁇ 4 > are respectively independently a hydrogen atom or a fluorine atom.
- the fluorine-containing aromatic compound is preferably a fluorine-containing aromatic compound in which two or more of the hydrogen atoms of the aromatic ring are substituted with a group represented by the above formula 11.
- the aromatic ring include a benzene ring, a fused ring containing a benzene ring (a naphthalene ring, an anthracene ring, a phenanthrene ring, a pyrene ring and the like), and an aromatic ring containing a biphenyl.
- the fluorine atom in the fluorine-containing aromatic compound at least a part of the R 1 to R 4 is a fluorine atom, or a fluorine atom is bonded to the aromatic ring.
- a linear or branched alkylene group which may be substituted by a fluorine atom, or a linear or branched alkylene group which may be substituted by a fluorine atom, one or more ether oxygens A group containing an atom, or a cycloalkylene group which may be substituted with a fluorine atom, or a group containing one or more ethereal oxygen atoms in the cycloalkylene group which may be substituted with a fluorine atom,
- bonded is mentioned.
- R 41 R 42 C CR 43 -... Formula 12
- R 41 , R 42 and R 43 independently represent a hydrogen atom or a linear or branched alkyl group.
- the content of the crosslinking aid is preferably 0.1 to 10 parts by mass with respect to 100 parts by mass of the fluorinated elastic copolymer. More preferred is 5 parts by mass.
- the content of the crosslinking aid is in the above range, physical properties such as hardness and heat resistance of a coating film formed from the fluorine-containing elastic copolymer composition are further excellent.
- the fluorine-containing elastic copolymer composition contains an additive other than the crosslinking agent and the crosslinking aid
- the content of the other additive is 0.01 to 100 parts by mass of the fluorine-containing elastic copolymer. 100 parts by mass is preferable, and 0.01 to 10 parts by mass is more preferable.
- the dispersibility of the other additive in a fluorine-containing elastic copolymer composition is good as content of another additive is in the said range.
- Other additives include metal oxides, pigments, fillers, reinforcing agents, processing aids and the like.
- a filler and a reinforcing material are preferable, and accordingly, the fluorinated elastic copolymer composition preferably contains at least one of a filler and a reinforcing material.
- the fluorinated elastic copolymer composition further contains a metal oxide
- metal oxides include oxides of divalent metals such as magnesium oxide, calcium oxide, zinc oxide and lead oxide.
- the content of the metal oxide is preferably 0.1 to 10 parts by mass with respect to 100 parts by mass of the fluorine-containing elastic copolymer. More preferred is 5 parts by mass. It is excellent in the hardness of the coating film etc. which are formed from a fluorine-containing elastic copolymer composition as content of a metal oxide is in the said range.
- Examples of the filler and the reinforcing material include carbon materials, polymers, silicon dioxide-containing materials and the like.
- Examples of the carbon material include multilayer carbon nanotubes, single-walled carbon nanotubes, carbon nanofibers, carbon nanobelts, carbon nanohorns, nanographite, fullerene, graphite, carbon fibers, carbon black and the like.
- As the polymer polytetrafluoroethylene, polyvinylidene fluoride, polyvinyl fluoride, polychlorotrifluoroethylene, TFE-ethylene copolymer, TFE-propylene copolymer, TFE-vinylidene fluoride copolymer, etc. Is illustrated.
- Examples of the silicon dioxide-containing material include celite, silica and the like. As silica, nano silica etc. are illustrated. Examples of other fillers or reinforcing materials include cellulose nanofibers, barium sulfate, calcium carbonate, titanium oxide, whiskers of titanate, metal nanoparticles, clay, talc and the like.
- the fluorine-containing elastic copolymer composition further contains at least one of a filler and a reinforcing material
- the total content of the filler and the reinforcing material is 0.01 relative to 100 parts by mass of the fluorine-containing elastic copolymer. The amount is preferably up to 100 parts by mass, more preferably 0.01 to 10 parts by mass. When the total content of the filler and the reinforcing material is within the above range, the dispersibility of the filler and the reinforcing material in the fluorinated elastic copolymer composition is good.
- the processing aid is not particularly limited.
- processing aids that exhibit the function as lubricants include fatty acid metal salts (sodium stearate, calcium stearate, etc.), synthetic waxes (polyethylene wax, etc.), fatty acid esters (glycerin monooleate, etc.), etc.
- the fluorine-containing elastic copolymer composition can be obtained by using a device such as a mixing roll, a kneader, or a closed mixer such as a Banbury mixer, and using a fluorine-containing elastic copolymer, a specific fluorine-containing solvent, and a crosslinking agent as required. It is obtained by mixing additives.
- the mixing time is preferably 3 to 60 minutes, more preferably 3 to 20 minutes. If the mixing time is 3 minutes or more, the additive in the fluorinated elastic copolymer composition is sufficiently dispersed in the specified fluorinated solvent. If the mixing time is 60 minutes or less, the additive is not destroyed.
- the carbon number of the perfluorocarbon group having the largest carbon number in the specific fluorine-containing solvent is 3 or more, and the fluorine atom-containing of the specific fluorine-containing solvent Since the rate is 69 mass% or more, the solubility of the fluorinated elastic copolymer in a solvent is excellent.
- the carbon number of the perfluorocarbon group having the largest number of carbon atoms in the specified fluorinated solvent is 7 or less, and the boiling point of the specified fluorinated solvent is 50 ° C.
- the fluorine atom content of the specified fluorine-containing solvent is 80% by mass or less, the solvent is easily available.
- the boiling point of the specified fluorinated solvent is 160 ° C. or less, the solvent can be easily removed.
- Examples of applications of the fluorinated elastic copolymer composition of the present invention include a paint, an adhesive, and a coated article having a coating film formed by the paint.
- the composition which removed the specific fluorine-containing solvent from the fluorine-containing elastic copolymer composition of this invention containing additives, such as a crosslinking agent, has a favorable dispersibility of a structural component.
- the paint and adhesive of the present invention comprise the above-mentioned fluorine-containing elastic copolymer composition of the present invention.
- the above-mentioned fluorine-containing elastic copolymer composition of the present invention may be used as it is as a paint and an adhesive of the present invention.
- the paint and the adhesive of the present invention may contain, in addition to the above-described additives, additives such as a silane coupling agent.
- the method for adhering the paint and adhesive of the present invention to a substrate is not particularly limited.
- An example is a method of forming a coating film by adhering to the surface of a substrate by a coating method such as application, impregnation, immersion, spraying, brushing, padding, size press, or roller to remove a specific fluorine-containing solvent. .
- the paint and the adhesive of the present invention described above contain the fluorinated elastic copolymer composition of the present invention, so the solubility of the fluorinated elastic copolymer in the solvent is excellent, and the solvent is removed by evaporation. Easy to get, and easy to get solvent.
- the coated article of the present invention has on the surface of a substrate a coating which does not contain a specific fluorine-containing solvent, which is formed from the above-mentioned paint of the present invention.
- the substrate is not particularly limited. Fibers, textile fabrics, textile fabrics, nonwoven fabrics, glass, paper, wood, leather, artificial leather, stone, concrete, ceramic products, plastics such as rubber and resin, porous resins, porous fibers are exemplified.
- the material of the porous resin include polypropylene and polytetrafluoroethylene (PTFE).
- the coated article of the present invention is obtained by treating a substrate with the paint of the present invention.
- the coated article of the present invention can be produced by attaching the coating material of the present invention described above to a substrate and removing the specified fluorinated solvent.
- a method of adhering to the surface of a substrate by a coating method such as application, impregnation, immersion, spraying, brushing, padding, size press, roller and the like and then removing a specific fluorine-containing solvent is exemplified.
- the removal of the specific fluorine-containing solvent may be performed at normal temperature or may be performed by heating, but heating is preferable.
- a fluorine-containing elastic copolymer composition contains a crosslinking agent, after removing a specific fluorine-containing solvent, it is preferable to heat and crosslink at 120 degreeC or more as needed.
- the crosslinking may be performed in the presence of an inert gas such as nitrogen gas.
- the crosslinking temperature is preferably 100 to 200 ° C., and more preferably 100 to 150 ° C.
- the application of the coated article of the present invention includes transportation equipment (cars, trains, ships, aircraft, etc.), civil engineering members (bridge members, towers, etc.), industrial equipment (waterproof sheets, tanks, pipes, etc.), communication equipment, Electrical equipment, electronic equipment, surface sheets for solar cell modules, back sheets for solar cell modules, etc. may be mentioned.
- the fluorine-containing elastic copolymer composition of the present invention containing an additive such as a crosslinking agent can disperse in the composition an additive which is difficult to disperse even when shear force is applied.
- a composition containing no specific fluorine-containing solvent excellent in the dispersibility of the constituent components can be obtained.
- the removal of the specific fluorinated solvent may be carried out at normal temperature or may be carried out by heating, but it is preferable to carry out heating. When heating, heating to about 80 to 120 ° C. is preferable. Moreover, it is preferable to heat at 120 degreeC or more and to bridge
- the crosslinking may be performed in the presence of an inert gas such as nitrogen gas.
- the crosslinking temperature is preferably 100 to 200 ° C., and more preferably 100 to 150 ° C. (Use)
- a use of the crosslinked material obtained by crosslinking the composition which does not contain a specific fluorine-containing solvent obtained from the fluorine-containing elastic copolymer composition containing a crosslinking agent, a valve, a hose, a sheet, a sponge, a rubber roll, a seal Materials, covering materials, members for oil drilling, and the like.
- a gasket, an oil seal, a diaphragm, a wire coating material, a rubber glove, a button switch, a conductive member, a conductive seal, a conductive hose and the like can be mentioned.
- Examples 3 to 5, 7, 8, and 20 to 23 are examples, and examples 1, 2, 6, 9 to 19, and 24 are comparative examples.
- fluorine atom content rate of the fluorine-containing solvent was calculated from the following Formula 2.
- Fluorine atom content rate (mass%) (19 ⁇ number of fluorine atoms of fluorine-containing solvent / molecular weight of fluorine-containing solvent) ⁇ 100 Formula 2
- FFKM Fluorinated elastic copolymer
- a ratio of TFE units is 69 mol% and a ratio of PAVE units is 31 mol% with respect to the total of all units constituting the TFE-PAVE copolymer FFKM.
- the iodine atom is contained at 0.15% by mass with respect to the total mass of FFKM.
- Fluorinated solvent 1 C 14 F 24 (Perfluoroperhydrophenanthrene, manufactured by F2 Chemical Co., product name: Flutec (registered trademark) PP-11).
- Fluorinated solvent 2 CF 3 (CF 2 ) 7 CH 2 CH 3 .
- Fluorine-containing solvent 3 CF 3 (CF 2 ) 5 CH 2 CH 3 (manufactured by AGC, product name: Asahi Clean® (registered trademark) AC-6000).
- Fluorine-containing solvent 4 CF 3 (CF 2 ) 4 CF 2 H (manufactured by AGC, product name: Asahiklin (registered trademark) AC-2000).
- Fluorine-containing solvent 5 CF 3 CF 2 CF (OCH 3 ) CF (CF 3 ) 2 (manufactured by 3M, product name: NOBEC (registered trademark) 7300).
- Fluorine-containing solvent 6 (CF 3 (CF 2 ) 3 ) 3 N (manufactured by 3M, product name: Florinert (registered trademark) FC-43).
- Fluorine-containing solvent 7 CF 3 (CF 2 ) 3 CH 2 CH 3 .
- Fluorinated solvent 8 C 7 OF 15 N, compound 10 (manufactured by 3M, product name: Florinert (registered trademark) FC-770).
- Fluorine-containing solvent 9 CF 3 (CF 2 ) 3 OCH 3 (manufactured by 3M, product name: Nobec (registered trademark) 7100).
- Fluorine-containing solvent 10 CF 3 (CF 2 ) 3 OCH 2 CH 3 (manufactured by 3M, product name: Nobec (registered trademark) 7200).
- Fluorine-containing solvent 11 C 5 H 3 F 7 (1, 1, 2, 2, 3, 3,4- heptafluorocyclopentane, manufactured by Nippon Zeon Co., product name: Zeorora (registered trademark) H).
- Fluorinated solvent 12 CF 3 (CHF) 2 CF 2 CF 3 (manufactured by Chemours, product name: Bartrel (registered trademark) XF)).
- Fluorine-containing solvent 13 CF 3 CH 2 OCF 2 CHF 2 (manufactured by AGC, product name: Asahiklin (registered trademark) AE-3000).
- Fluorine-containing solvent 14 CClF 2 CF 2 CHFCl (manufactured by AGC Co., Ltd., product name: Asahikaline (registered trademark) AK-225).
- Fluorinated solvent 15 C 6 H 4 (CF 3 ) 2 (1,2-bis (trifluoromethyl) cyclohexane).
- Fluorine-containing solvent 16 CHF 2 CF 2 CH 2 OH.
- Fluorinated solvent 17 (CF 3 ) 2 CHOH (manufactured by Central Glass, 1,1,1,3,3,3-hexafluoro-2-isopropanol (HFIP)).
- Fluorine-containing solvent 18 CF 3 (CF 2 ) 5 COOCH 3 .
- Fluorinated solvent 19 CF 3 (CF 2) 7 COOCH 3.
- the fluorine-containing solvents 2, 7, 15, 18, and 19 were synthesized by a known method.
- (Crosslinking agent) 2,5-Dimethyl-2,5-bis (tert-butylperoxy) hexane (manufactured by NOF Corporation, product name: Perhexa 25B).
- Examples 1 to 19 8 g of FFKM and 40 ml of the fluorine-containing solvents of the respective examples shown in Table 1 were stirred at 1500 rpm ⁇ 15 minutes with a stirrer (Awatori Neritaro, manufactured by Shinky Co., Ltd.). The solubility of the fluorinated solvents 1 to 19 was evaluated.
- the fluorine-containing solvents 1, 6 and 11 are perfluorocarbons.
- the fluorinated solvents 2, 3, 4, 7, 12 and 15 are hydrofluorocarbons.
- the fluorine-containing solvents 5, 9, 10 and 13 are hydrofluoroethers.
- the fluorine-containing solvents 6 and 8 are fluorine-containing solvents having a nitrogen atom.
- the fluorinated solvent 14 is a hydrochlorofluorocarbon.
- the fluorinated solvents 16 and 17 are alcohols.
- the fluorine-containing solvents 18, 19 are esters.
- Example 9 to 11 and 18 the fluorine content of the fluorine-containing solvents 9 to 11 and 18 was less than 69% by mass, so that the FFKM could not be dissolved.
- Example 12 and 13 since C fn of the fluorinated solvents 12 and 13 is less than 3, FFKM could not be dissolved.
- Example 14-17 C fn of fluorinated solvent 14-17 is less than 3, since the fluorine atom content is less than 69 wt%, failed to dissolve the FFKM.
- Example 19 since C fn of the fluorine-containing solvent 19 is larger than 7 and the fluorine atom content is less than 69 mass%, the FFKM could not be dissolved.
- the fluorinated solvent 19 has a boiling point greater than 160 ° C., it is difficult to remove the solvent.
- a paint containing FFKM and the fluorine-containing solvent 4 can form a coating having a film hardness of at least 2 B or more. Further, when the paint containing FFKM and the fluorine-containing solvent 4 contains a pigment such as carbon black and silica, the color tone of the coating film can be adjusted from black to semi-transparent.
- the fluorine-containing elastic copolymer composition of the present invention and the crosslinked product of the fluorine-containing elastic copolymer composition of the present invention are materials such as hoses, O-rings, sheets, gaskets, oil seals, diaphragms, V-rings and the like. Suitable.
- heat resistant chemical resistant sealing material heat resistant oil resistant sealing material, wire covering material, sealing material for semiconductor device, corrosion resistant rubber paint, urea grease resistant seal material, rubber paint, calender sheet, sponge, rubber roll, Oil drilling components, heat dissipation sheet, solution cross-linked body, rubber sponge bearing seal (urea resistant grease etc.), lining (chemical resistant), insulating sheet for automobile, packing for endoscope (amine resistant), mono pump, bellows hose (calendar Sheet processed products), water heater packings or valves, fenders (marine civil engineering, ships), fibers and non-woven fabrics (protective clothing etc.), base seal materials, rubber gloves, button switches, food container packings, water bottle packings, Applications of the conductive member, the conductive seal and the conductive hose are illustrated.
- the entire contents of the specification, claims and abstract of Japanese Patent Application No. 2017-198408 filed on Oct. 12, 2017 are incorporated herein by reference and incorporated as disclosure of the specification of the present invention. is there.
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Abstract
Description
また、含フッ素弾性共重合体に、さらに機能を持たせるために、種々の添加剤を入れて共重合体組成物とすることが知られている(特許文献4)。含フッ素共重合体組成物に配合されたものを分散させる方法としては、せん断力等の強い力を与えて混練することが一般的である。
特許文献1,2は、硬化性ペルフルオロポリマーと、硬化剤と、フッ素化溶媒とを含む溶液を開示している。特許文献3は、含フッ素エラストマーと、フッ素系溶剤とを含む含フッ素エラストマー塗料組成物を開示している。特許文献4は、パーフルオロエラストマーにカーボンナノファイバーが分散した炭素繊維複合材料を開示している。
また、特許文献3にフッ素系溶剤として例示されるフロリナート(登録商標)FC-77は、炭素数が8のペルフルオロ炭化水素基を有する化合物を含む。このように炭素数が大きいフッ素系溶剤は、最近では入手が困難である。
さらに、特許文献4のように炭素繊維複合材料を製造する過程でカーボンナノファイバーに強いせん断力等を与える場合、カーボンナノファイバーが破壊されることがある。
[1] テトラフルオロエチレンに基づく単位と下式1で表される化合物に基づく単位とを有する含フッ素弾性共重合体および含フッ素溶媒を含み、
前記含フッ素溶媒が、少なくとも1つのペルフルオロ炭化水素基を有し、かつ最も炭素数の多いペルフルオロ炭化水素基の炭素数が3~7であり、
前記含フッ素溶媒の沸点が、50~160℃であり、
前記含フッ素溶媒の下式2で計算されるフッ素原子含有率が、69~80質量%であることを特徴とする含フッ素弾性共重合体組成物。
CF2=CFORf1 ・・・式1
ただし、Rf1は、炭素数1~10のペルフルオロアルキル基である。
フッ素原子含有率(質量%)=(19×含フッ素溶媒のフッ素原子数/含フッ素溶媒の分子量)×100 ・・・式2
[3] さらに、架橋剤又は架橋剤と架橋助剤とを含む、[1]又は[2]に記載の含フッ素弾性共重合体組成物。
[4] 架橋剤の含有量が、含フッ素弾性共重合体の100質量部に対して、0.3~10質量部であり、
架橋助剤を含む場合は、架橋助剤の含有量が、含フッ素弾性共重合体の100質量部に対して、0.1~10質量部である、[3]に記載の含フッ素弾性共重合体組成物。
[5] さらに、充填剤および補強材の少なくとも一方を含む、[1]~[4]4のいずれかに記載の含フッ素共重合体組成物。
[6] 充填剤および補強材の合計の含有量が、含フッ素共重合体100部に対して、0.01~100質量部である、[5]に記載の含フッ素共重合体組成物。
[8] [1]~[6]のいずれかに記載の含フッ素弾性共重合体組成物を含む、接着剤。
[9] [7]に記載の塗料から形成された、前記含フッ素溶媒を含まない塗膜を有する、塗装物品。
[10] 前記塗料が、架橋剤又は架橋剤と架橋助剤とを含む塗料であり、前記塗膜が、架橋された含フッ素弾性共重合体からなる塗膜である、[9]に記載の塗装物品。
前記含フッ素溶媒が、少なくとも1つのペルフルオロ炭化水素基を有し、かつ最も炭素数の多いペルフルオロ炭化水素基の炭素数が3~7であり、
前記含フッ素溶媒の沸点が、50~160℃であり、
前記含フッ素溶媒の下記式2で計算されるフッ素原子含有率が、69~80質量%であることを特徴とする前記含フッ素溶媒を含まない組成物の製造方法。
CF2=CFORf1 ・・・式1
ただし、Rf1は、炭素数1~10のペルフルオロアルキル基である。
フッ素原子含有率(質量%)=(19×含フッ素溶媒のフッ素原子数/含フッ素溶媒の分子量)×100 ・・・式2
[12] 前記含フッ素弾性共重合体組成物が、さらに充填剤および補強材の少なくとも一方を含む、[11]に記載の前記含フッ素溶媒を含まない組成物の製造方法。
本発明によれば、溶媒への含フッ素弾性共重合体の溶解性に優れ、溶媒を除去しやすく、溶媒を入手しやすい塗料又は接着剤が得られる。
本発明によれば、作業性を低下させずに塗装物品が得られる。
本発明によれば、構成成分の分散性に優れた組成物が得られる。また、含フッ素弾性共重合体組成物から含フッ素溶媒を除去して得られる含フッ素溶媒を含まない組成物が架橋剤を含む場合は、前記組成物を架橋することにより、構成成分の分散性に優れた架橋物が得られる。
「単位」は、共重合体において、単量体1分子が重合することで直接形成される原子団又は、該原子団の一部を化学変換することで得られる原子団を意味する。
「ペルフルオロ炭化水素基」とは、炭化水素基の水素原子のすべてがフッ素原子に置換された基をいう。ペルフルオロアルカンにおけるペルフルオロ炭化水素基は、ペルフルオロアルカンからフッ素原子を1個除いた原子団である。
「沸点」は、大気圧下で測定される値である。
「エーテル性酸素原子」とは、炭素原子-炭素原子間においてエーテル結合(-O-)を形成する酸素原子をいう。
本発明の含フッ素弾性共重合体組成物は、特定の含フッ素弾性共重合体と、特定の含フッ素溶媒(以下、特定含フッ素溶媒とも記す。)とを含む。本発明の含フッ素弾性共重合体組成物は、本発明の効果を損なわない範囲で、架橋剤、架橋助剤、その他の添加剤等を含んでいてもよい。また、本発明の含フッ素弾性共重合体組成物は、上記特定の含フッ素弾性共重合体を2種以上含んでいてもよく、特定含フッ素溶媒を2種以上含んでいてもよい。
本発明における含フッ素弾性共重合体は、テトラフルオロエチレン(以下、TFEと記す。)に基づく単位(以下、TFE単位と記す。)と後述する化合物1に基づく単位(以下、PAVE単位と記す。)とを有する。含フッ素弾性共重合体は、後述する化合物3に基づく単位(以下、単位cと記す。)および2個以上の重合性不飽和結合を有する含フッ素単量体に基づく単位(以下、単位dと記す。)の少なくとも一方を有していてもよい。含フッ素弾性共重合体は、本発明の効果を損なわない範囲内で、必要に応じて他の単量体に基づく単位(以下、単位eと記す。)をさらに有していてもよい。
CF2=CFORf1 ・・・式1
ただし、Rf1は、炭素数1~10のペルフルオロアルキル基である。
CF2=CFOCF3(PMVE)
CF2=CFOCF2CF3(PEVE)
CF2=CFOCF2CF2CF3(PPVE)
CF2=CFOCF2CF2CF2CF3
化合物1としては、含フッ素弾性共重合体の生産性が向上する点から、PMVE、PEVE、PPVEが好ましい。
CF2=CF(ORf2)n-(OCF2)m-ORf5 ・・・式3
ただし、Rf2は炭素数2~4のペルフルオロアルキル基であり、Rf5は炭素数1~4のペルフルオロアルキル基であり、nは0~3の整数であり、mは0~4の整数であり、n+mは1~7の整数である。
なお、式3のn、mは、それぞれ、(ORf2)と(OCF2)の数を表すものである。したがって、式3は(ORf2)n、(OCF2)mそれぞれの配置の順を表すものではなく、また、n、mのそれぞれが2以上の場合、(ORf2)n、(OCF2)mは(ORf2)、(OCF2)のブロック配置を表すものでもない。
nが0のとき、mは3又は4が好ましい。
nが1のとき、mは2~4が好ましい。
nが2又は3のとき、mは0が好ましい。
nは、1~3が好ましい。
Rf2およびRf5の炭素数、nおよびmが前記範囲内であれば、含フッ素弾性共重合体を架橋ゴム物品としたときの低温特性がさらに優れ、また、含フッ素弾性共重合体の生産性が向上する。
CF2=CF-OCF2CF2-(OCF2)4-OCF3(C9PEVE)
CF2=CF-OCF2CF2-(OCF2)2-OCF3(C7PEVE)
CF2=CF-(OCF2CF2)2-OCF2CF3(EEAVE)
CF2=CF-(OCF2CF2)3-OCF2CF3(EEEAVE)
CF2=CF-OCF2-OCF3
CF2=CF-OCF2-OCF2CF3
CF2=CF-(OCF2CF(CF3))2-OCF2CF2CF3、
CF2=CF-(OCF2)2-OCF3
化合物3としては、含フッ素弾性共重合体を架橋ゴム物品としたときの低温特性がさらに優れ、また、含フッ素弾性共重合体の生産性が向上する点から、C9PEVE、C7PEVE、EEAVE、EEEAVEが好ましい。
なお、これらの化合物は、対応するアルコールを原料として、国際公開第00/56694号に記載の方法によって製造できる。
重合性不飽和結合としては、炭素原子-炭素原子間の二重結合(C=C)、三重結合(C≡C)等が挙げられ、二重結合が好ましい。重合性不飽和結合の数は、2~6個が好ましく、2又は3個がより好ましく、2個が特に好ましい。
2個以上の重合性不飽和結合を有する含フッ素単量体は、ペルフルオロ化合物であることが好ましい。
CF2=CFORf3OCF=CF2 ・・・式4
ただし、Rf3は、炭素数1~25のペルフルオロアルキレン基、又は炭素数2~25のペルフルオロアルキレン基の炭素原子-炭素原子間に1個以上のエーテル性酸素原子を有する基である。
CF2=CFO(CF2)2OCF=CF2
CF2=CFO(CF2)3OCF=CF2(C3DVE)
CF2=CFO(CF2)4OCF=CF2(C4DVE)
CF2=CFO(CF2)6OCF=CF2
CF2=CFO(CF2)8OCF=CF2
CF2=CFO(CF2)2OCF(CF3)CF2OCF=CF2
CF2=CFO(CF2)2O(CF(CF3)CF2O)2CF=CF2
CF2=CFOCF2O(CF2CF2O)2CF=CF2
CF2=CFO(CF2O)3(CF(CF3)CF2O)2CF=CF2
CF2=CFOCF2CF(CF3)O(CF2)2OCF(CF3)CF2OCF=CF2
CF2=CFOCF2CF2O(CF2O)2CF2CF2OCF=CF2
化合物4としては、含フッ素弾性共重合体を架橋ゴム物品としたときのゴム物性を維持しつつ低温特性がさらに優れる点から、C3DVE、C4DVEが特に好ましい。
他の単量体としては、フッ素原子およびニトリル基を有する単量体、フッ素原子およびフッ素原子以外のハロゲン原子を有する単量体が例示される。
CF2=CFO(CF2CF(CF3)O)p(CF2)qCN ・・・式5
ただし、pは、0~5の整数であり、qは、1~5の整数である。
CF2=CFO(CF2)rOCF(CF3)CN ・・・式6
ただし、rは、2~4の整数である。
CF2=CFO(CF2)5CN
CF2=CFOCF2CF(CF3)O(CF2)2CN
化合物6の具体例としては、下記の化合物が例示される。
CF2=CFO(CF2)3OCF(CF3)CN
PAVE単位の割合は、含フッ素弾性共重合体を構成するすべての単位の合計に対して、25~75モル%が好ましく、25~60モル%がより好ましく、25~50モル%がさらに好ましい。
含フッ素共重合体が単位cを含む場合、単位cの割合は、含フッ素弾性共重合体を構成するすべての単位の合計に対して、57モル%以下が好ましく、3~40モル%がより好ましく、5~30モル%がさらに好ましい。
含フッ素共重合体が単位dを含む場合、単位dの割合は、含フッ素弾性共重合体を構成するすべての単位の合計に対して、1モル%以下が好ましく、0.01~0.5モル%がより好ましく、0.05~0.3モル%がさらに好ましい。
含フッ素共重合体が単位eを含む場合、単位eの割合は、含フッ素弾性共重合体を構成するすべての単位の合計に対して、5モル%以下が好ましく、3モル%以下がより好ましく、2モル%以下がさらに好ましい。
TFE単位、PAVE単位、単位c、単位dおよび単位eの割合が前記範囲内であれば、含フッ素弾性共重合体を架橋ゴム物品としたときのゴム物性を維持しつつ低温特性がさらに優れる。
本発明における含フッ素弾性共重合体は、TFE単位とPAVE単位とを含む単量体成分を重合させることによって製造できる。単量体成分は、必要に応じて、単位c、単位d、単位eを含んでいてもよい。
ラジカル重合開始源としては、ラジカル重合開始剤、加熱、電離性放射線照射等が例示される。これらの中でも、含フッ素弾性共重合体の生産性に優れる点から、ラジカル重合開始剤が好ましい。
後述する乳化重合に用いるラジカル重合開始剤としては、水溶性開始剤が好ましい。水溶性開始剤としては、過硫酸(過硫酸アンモニウム、過硫酸ナトリウム、過硫酸カリウム等)、過酸化水素、過酸化物(ジコハク酸ペルオキシド、ジグルタル酸ペルオキシド、tert-ブチルヒドロキシペルオキシド等)、アゾ化合物(アゾビスイソブチルアミジン二塩酸塩等)、過硫酸又は過酸化水素と、亜硫酸水素ナトリウム、チオ硫酸ナトリウム等の還元剤との組合せからなるレドックス系開始剤、前記レドックス系開始剤に少量の鉄、第一鉄塩、硫酸銀等をさらに共存させた系の無機系開始剤等が例示される。
ラジカル重合開始剤の量は、単量体成分の100質量部に対して、0.0001~5質量部が好ましく、0.001~2質量部がより好ましい。
連鎖移動剤としては、アルコール(メタノール、エタノール等)、クロロフルオロハイドロカーボン(1,3-ジクロロ-1,1,2,2,3-ペンタフルオロプロパン、1,1-ジクロロ-1-フルオロエタン等)、ハイドロカーボン(ペンタン、ヘキサン、シクロヘキサン等)、下記式7で表される化合物7、下記式8で表される化合物8、メルカプタン(tert-ドデシルメルカプタン、n-オクタデシルメルカプタン等)等が例示される。
Rf4I2 ・・・式7
Rf4IBr ・・・式8
ただし、Rf4は、炭素数1~16のポリフルオロアルキレン基である。
化合物7としては、1,4-ジヨードペルフルオロブタン、1,6-ジヨードペルフルオロヘキサン、1,8-ジヨードペルフルオロオクタン等が例示される。
化合物8としては、1-ヨード4-ブロモペルフルオロブタン、1-ヨード-6-ブロモペルフルオロヘキサン、1-ヨード-8-ブロモペルフルオロオクタン等が例示される。
連鎖移動剤の量は、連鎖移動剤の連鎖移動定数に基づき適宜設定される。例えば、化合物7を連鎖移動剤として用いる場合、連鎖移動剤の量は、単量体成分の100質量部に対して0.01~5質量部が好ましく、0.05~2質量部がより好ましい。
水性媒体としては、水、水と水溶性有機溶媒との混合物等が例示される。
水溶性有機溶媒としては、tert-ブタノール、プロピレングリコール、ジプロピレングリコール、ジプロピレングリコールモノメチルエーテル、トリプロピレングリコール等が例示され、単量体の重合速度が低下しない点から、tert-ブタノール、ジプロピレングリコールモノメチルエーテルが好ましい。
水性媒体が水溶性有機溶媒を含むと、単量体の分散性および含フッ素弾性共重合体の分散性に優れ、また、含フッ素弾性共重合体の生産性に優れる。
水溶性有機溶媒の含有量は、水の100質量部に対して、1~40質量部が好ましく、3~30質量部がより好ましい。
アニオン性乳化剤としては、炭化水素基を有する乳化剤(ラウリル硫酸ナトリウム、ドデシルベンゼンスルホン酸ナトリウム等)、フッ素原子を有する乳化剤(ペルフルオロオクタン酸アンモニウム、ペルフルオロオクタン酸ナトリウム、ペルフルオロヘキサン酸アンモニウム、下記式9で表される化合物9等が例示される。
F(CF2)tO(CF(X)CF2O)uCF(Y)COOA ・・・式9
ただし、XおよびYは、それぞれフッ素原子又は炭素数1~3の直鎖状又は分岐状のペルフルオロアルキル基であり、Aは、水素原子、アルカリ金属又はNH4であり、tは、2~10の整数であり、uは、0~3の整数である。
C2F5OCF2CF2OCF2COONH4
F(CF2)3O(CF(CF3)CF2O)2CF(CF3)COONH4
F(CF2)3OCF2CF2OCF2COONH4
F(CF2)3O(CF2CF2O)2CF2COONH4
F(CF2)4OCF2CF2OCF2COONH4、
F(CF2)4O(CF2CF2O)2CF2COONH4
F(CF2)3OCF2CF2OCF2COONa、
F(CF2)3O(CF2CF2O)2CF2COONa
F(CF2)4OCF2CF2OCF2COONa
F(CF2)4O(CF2CF2O)2CF2COONa
F(CF2)2OCF2CF2OCF2COONH4
F(CF2)2O(CF2CF2O)2CF2COONH4
F(CF2)2OCF2CF2OCF2COONa
F(CF2)2O(CF2CF2O)2CF2COONa
乳化剤の量は、水性媒体の100質量部に対して、0.01~15質量部が好ましく、0.1~10質量部がより好ましい。
凝集方法としては、金属塩の添加、無機酸(塩酸等)の添加、機械的剪断、凍結解凍等による方法が例示される。
重合圧力は、0.1~20MPa[gauge]が好ましく、0.3~10MPa[gauge]がより好ましく、0.3~5MPa[gauge]がさらに好ましい。
重合温度は、0~100℃が好ましく、10~90℃がより好ましく、20~80℃がさらに好ましい。
重合時間は、1~72時間が好ましく、1~24時間がより好ましく、1~12時間がさらに好ましい。
凝集方法としては、金属塩の添加、酸の添加、機械的剪断、凍結解凍等による方法が例示される。
前記酸としては、硝酸、硫酸、シュウ酸、フッ化水素酸等が例示される。これらの中でも、金属に対する腐食性がより低い点から、硝酸又は硫酸が好ましい。
酸による凝集処理は、含フッ素弾性共重合体を含むラテックスと酸を含む水溶液とを混合することによって行われる。
洗浄に用いる液状媒体としては、特に限定されない。前記液状媒体としては、水、超純水等が例示される。
乾燥温度は、特に限定されないが、100℃未満が好ましい。乾燥温度は、乾燥機内の雰囲気の温度である。
乾燥時の圧力は、特に限定されないが、50kPa以下が好ましい。乾燥時の圧力を50kPa以下とすることによって、乾燥温度を低くしても含フッ素弾性共重合体を充分に乾燥できる。
本発明における特定含フッ素溶媒は、含フッ素弾性共重合体を溶解する溶媒である。
特定含フッ素溶媒は、ペルフルオロ炭化水素基を有する。ペルフルオロ炭化水素基は、鎖式のペルフルオロ炭化水素基であってもよく、環式のペルフルオロ炭化水素基であってもよい。
鎖式のペルフルオロ炭化水素基は、直鎖状であってもよく、分岐鎖状であってもよい。鎖式のペルフルオロ炭化水素基としては、ペルフルオロアルキル基、ペルフルオロアルキレン基、ペルフルオロビニルアルキル基、ペルフルオロビニルアルキレン基等が例示される。
また、前記炭素数が6以下であると、特定含フッ素溶媒の沸点が低くなる傾向にあり、除去しやすい。
フッ素原子含有率(質量%)=(19×含フッ素溶媒のフッ素原子数/含フッ素溶媒の分子量)×100 ・・・式2
1,1,1,2,2,3,3,4,4,5,5,6,6-トリデカフルオロヘキサンの市販品としてはC6F13H(旭硝子社製、アサヒクリン(登録商標)AC-2000)、1,1,1,2,2,3,3,4,4,5,5,6,6-トリデカフルオロオクタンの市販品としてはC6F13C2H5(旭硝子社製、アサヒクリン(登録商標)AC-6000)が例示される。
特定含フッ素溶媒以外の含フッ素溶媒又は非フッ素溶媒としては、沸点が50℃以下の溶媒や特定含フッ素溶媒と共沸する溶媒が好ましい。
特定含フッ素溶媒と、特定フッ素溶媒以外の含フッ素溶媒又は非フッ素溶媒とを併用する場合、特定含フッ素溶媒の体積の割合は、特定含フッ素溶媒、特定含フッ素溶媒以外の含フッ素溶媒及び非フッ素溶媒の合計の体積に対して、90%以上が好ましく、95%以上がより好ましく、98%以上が更に好ましい。
なお、本発明の含フッ素弾性共重合体組成物が特定含フッ素溶媒以外の含フッ素溶媒や非フッ素溶媒を含む場合、以下の「特定含フッ素溶媒を除去する」とは、特定含フッ素溶媒以外の含フッ素溶媒や非フッ素溶媒もまた除去されることを意味する。
(架橋剤)
含フッ素弾性共重合体組成物が架橋剤をさらに含む場合、含フッ素弾性共重合体組成物から形成される塗膜等の硬度、耐熱性等の物性が優れる傾向がある。
架橋剤としては、有機過酸化物、ポリオール、アミン、トリアジン等が例示される。これらの中でも、生産性、耐熱性、耐薬品性に優れる点から、有機過酸化物が好ましい。
有機過酸化物としては、ジアルキルペルオキシド(ジtert-ブチルペルオキシド、tert-ブチルクミルペルオキシド、ジクミルペルオキシド、α,α-ビス(tert-ブチルペルオキシ)-p-ジイソプロピルベンゼン、2,5-ジメチル-2,5-ビス(tert-ブチルペルオキシ)ヘキサン、2,5-ジメチル-2,5-ビス(tert-ブチルペルオキシ)ヘキシン-3等)、1,1-ジ(tert-ブチルペルオキシ)-3,3,5-トリメチルシクロヘキサン、2,5-ジメチルヘキサン-2,5-ジヒドロペルオキシド、ベンゾイルペルオキシド、tert-ブチルペルオキシベンゼン、1,3-ビス(tert-ブチルペルオキシイソプロピル)ベンゼン、2,5-ジメチル-2,5-ジ(ベンゾイルペルオキシ)ヘキサン、tert-ブチルペルオキシマレイン酸、tert-ブチルペルオキシイソプロピルカーボネート等が例示される。有機過酸化物としては、ジアルキルペルオキシドが好ましい。
含フッ素弾性共重合体組成物が架橋剤を含む場合は、さらに、架橋助剤を含むことが好ましい。
含フッ素弾性共重合体組成物が架橋助剤をさらに含む場合、架橋効率がより高くなる。
架橋助剤としては、トリアリルシアヌレート、トリアリルイソシアヌレート、トリメタリルイソシアヌレート、1,3,5-トリアクリロイルヘキサヒドロ-1,3,5-トリアジン、トリアリルトリメリテート、m-フェニレンジアミンビスマレイミド、p-キノンジオキシム、p,p’-ジベンゾイルキノンジオキシム、ジプロパルギルテレフタレート、ジアリルフタレート、N,N’,N’’,N’’’-テトラアリルテレフタールアミド、ビニル基含有シロキサンオリゴマー(ポリメチルビニルシロキサン、ポリメチルフェニルビニルシロキサン等)等の含ビスオレフィン化合物、芳香族環に結合したビニル基又はアリル基を2個以上有する含フッ素芳香族化合物が例示される。これらの中でも、トリアリルシアヌレート、トリアリルイソシアヌレート、トリメタリルイソシアヌレート、含ビスオレフィン化合物、および前記含フッ素芳香族化合物から選ばれる1種以上の架橋助剤が好ましく、トリアリルイソシアヌレートが特に好ましい。
ただし、式12中、R41、R42およびR43は、独立して水素原子又は直鎖状もしくは分岐状のアルキル基を示す。
含フッ素弾性共重合体組成物が架橋剤および架橋助剤以外の添加剤を含む場合、該他の添加剤の含有量は、含フッ素弾性共重合体の100質量部に対して0.01~100質量部が好ましく、0.01~10質量部がより好ましい。他の添加剤の含有量が前記範囲内であると、含フッ素弾性共重合体組成物中の他の添加剤の分散性がよい。
他の添加剤としては、金属酸化物、顔料、充填剤、補強材、加工助剤等が例示される。他の添加剤としては、充填剤および補強材が好ましく、よって、含フッ素弾性共重合体組成物は充填剤および補強材の少なくとも一方を含むことが好ましい。
金属酸化物としては、酸化マグネシウム、酸化カルシウム、酸化亜鉛、酸化鉛等の2価金属の酸化物が例示される。
含フッ素弾性共重合体組成物が金属酸化物を含む場合、金属酸化物の含有量は、含フッ素弾性共重合体の100質量部に対して0.1~10質量部が好ましく、0.5~5質量部がより好ましい。金属酸化物の含有量が前記範囲内であると、含フッ素弾性共重合体組成物から形成される塗膜等の硬度に優れる。
炭素素材としては、複層カーボンナノチューブ、単層カーボンナノチューブ、カーボンナノファイバー、カーボンナノベルト、カーボンナノホーン、ナノグラファイト、フラーレン、グラファイト、カーボンファイバー、カーボンブラック等が例示される。
重合体としては、ポリテトラフルオロエチレン、ポリフッ化ビニリデン、ポリフッ化ビニル、ポリクロロトリフルオロエチレン、TFE-エチレン系共重合体、TFE-プロピレン系共重合体、TFE-フッ化ビニリデン系共重合体等が例示される。
含二酸化珪素素材としては、セライト、シリカ等が例示される。シリカとしては、ナノシリカ等が例示される。
その他の充填剤又は補強材としては、セルロースナノファイバー、硫酸バリウム、炭酸カルシウム、酸化チタン、チタン酸ウィスカー、金属ナノ粒子、クレー、タルク等が例示される。
含フッ素弾性共重合体組成物が充填剤および補強材の少なくとも一方をさらに含む場合、充填剤および補強材の合計の含有量は、含フッ素弾性共重合体の100質量部に対して0.01~100質量部が好ましく、0.01~10質量部がより好ましい。充填剤および補強材の合計の含有量が前記範囲内であると、含フッ素弾性共重合体組成物中の充填剤および補強材の分散性がよい。
含フッ素弾性共重合体組成物は、混合ロール、ニーダー、バンバリーミキサー等の密閉式混合機等の装置を用いて、含フッ素弾性共重合体、特定含フッ素溶媒、必要に応じて架橋剤等の添加剤を混合することによって得られる。
混合時間は、3~60分が好ましく、3~20分がより好ましい。混合時間が3分以上であれば、特定含フッ素溶媒中に、含フッ素弾性共重合体組成物中の添加剤、充分に分散する。混合時間が60分以下であれば、添加剤が破壊されない。
以上説明した本発明の含フッ素弾性共重合体組成物にあっては、特定含フッ素溶媒における最も炭素数の多いペルフルオロ炭化水素基の炭素数が3以上であり、特定含フッ素溶媒のフッ素原子含有率が、69質量%以上であるため、溶媒への含フッ素弾性共重合体の溶解性に優れる。
本発明の含フッ素弾性共重合体組成物にあっては、特定含フッ素溶媒における最も炭素数の多いペルフルオロ炭化水素基の炭素数が7以下であり、特定含フッ素溶媒の沸点が50℃以上であり、特定含フッ素溶媒のフッ素原子含有率が80質量%以下であるため、溶媒を入手しやすい。
本発明の含フッ素弾性共重合体組成物にあっては、特定含フッ素溶媒の沸点が160℃以下であるため、溶媒を除去しやすい。
本発明の含フッ素弾性共重合体組成物の用途としては、塗料、接着剤、前記塗料によって形成された塗膜を有する塗装物品が挙げられる。
また、架橋剤等の添加剤を含む本発明の含フッ素弾性共重合体組成物から、特定含フッ素溶媒を除去した組成物は、構成成分の分散性がよい。
本発明の塗料および接着剤は、上述した本発明の含フッ素弾性共重合体組成物を含む。上述した本発明の含フッ素弾性共重合体組成物は、そのまま本発明の塗料および接着剤とされてもよい。
本発明の塗料および接着剤は、上述した添加剤の他、シランカップリング剤等の添加剤を含んでもよい。
本発明の塗料および接着剤を基材に付着させる方法は特に限定されない。塗布、含浸、浸漬、スプレー、ブラッシング、パディング、サイズプレス、ローラー等の被覆加工法により基材の表面に付着させて特定含フッ素溶媒を除去することにより、塗膜を形成する方法が例示される。
以上説明した本発明の塗料および接着剤にあっては、本発明の含フッ素弾性共重合体組成物を含むため、溶媒への含フッ素弾性共重合体の溶解性に優れ、溶媒を蒸発によって除去しやすく、溶媒を入手しやすい。
本発明の塗装物品は、基材の表面に、上述した本発明の塗料から形成された、特定含フッ素溶媒を含まない塗膜を有する。
基材に本発明の塗料又は接着剤を付着させる方法は特に限定されない。塗布、含浸、浸漬、スプレー、ブラッシング、パディング、サイズプレス、ローラー等の被覆加工法により基材の表面に付着させ、次いで特定含フッ素溶媒を除去する方法が例示される。特定含フッ素溶媒の除去は常温で行ってもよく、加熱して行ってもよいが、加熱することが好ましい。加熱する場合には、80~120℃程度に加熱することが好ましい。
また、含フッ素弾性共重合体組成物が架橋剤を含有する場合、特定含フッ素溶媒の除去した後、必要に応じて、120℃以上に加熱して架橋を行うことが好ましい。架橋を行う場合、窒素ガス等の不活性ガスの存在下で架橋を行ってもよい。架橋温度としては、100~200℃が好ましく、100~150℃がより好ましい。
本発明の塗装物品の用途としては、輸送用機材(自動車、電車、船舶、航空機等)、土木部材(橋梁部材、鉄塔等)、産業機材(防水材シート、タンク、パイプ等)、通信機材、電気機材、電子機材、太陽電池モジュール用表面シート、太陽電池モジュール用バックシート等が挙げられる。
以上説明した本発明の塗装物品にあっては、本発明の塗料から形成された塗膜を有するため、製造の際に溶媒を除去しやすい。よって、本発明の塗装物品は、作業性を低下させずに得られる。
<特定含フッ素溶媒を含まない組成物の製造方法>
架橋剤等の添加剤を含む本発明の含フッ素弾性共重合体組成物は、せん断力を与えても分散させにくい添加剤を、組成物中に分散させることができる。よって、添加剤を含む本発明の含フッ素弾性共重合体組成物から、特定含フッ素溶媒を除去することにより、構成成分の分散性に優れた、特定含フッ素溶媒を含まない組成物が得られる。
特定含フッ素溶媒の除去は、常温で行ってもよく、加熱して行ってもよいが、加熱することが好ましい。加熱する場合には、80~120℃程度に加熱することが好ましい。
また、架橋剤を含む含フッ素弾性共重合体組成物から得られた、特定含フッ素溶媒を含まない組成物は、必要に応じて、120℃以上に加熱して架橋を行うことが好ましい。架橋を行う場合、窒素ガス等の不活性ガスの存在下で架橋を行ってもよい。架橋温度としては、100~200℃が好ましく、100~150℃がより好ましい。
(用途)
架橋剤を含む含フッ素弾性共重合体組成物から得られた、特定含フッ素溶媒を含まない組成物を架橋して得た架橋物の用途としては、バルブ、ホース、シート、スポンジ、ゴムロール、シール材、被覆材、石油掘削用部材等が挙げられる。
具体的には、カレンダーシート、ポーノポンプ、放熱シート、自動車用絶縁シート、ゴムスポンジベアリングシール、O-リング、V-リング、フードコンテナ用パッキン、水筒用パッキン、給湯器パッキン、内視鏡用パッキン、ガスケット、オイルシール、ダイヤフラム、電線被覆材、ゴム手袋、ボタンスイッチ、導電性部材、導電性シール、導電性ホース等が挙げられる。
(作用機序)
以上説明した架橋剤等の添加剤を含む本発明の含フッ素弾性共重合体組成物から、特定含フッ素溶媒を除去して得られた、特定含フッ素溶媒を含まない組成物にあっては、特定含フッ素弾性共重合体組成物において組成物を構成する成分の分散性がよいので、特定含フッ素溶媒を除去した後も、構成する成分の分散性がよい。また、せん断力等の強い力を与えないので、添加剤等が破壊されない。
(最も炭素数の多いペルフルオロ炭化水素基の炭素数:Cfnとフッ素原子含有率)
含フッ素溶媒2、7、15,18,19については、19F-NMR分析、フッ素原子含有量分析、赤外吸収スペクトル分析の各結果より、含フッ素溶媒の構造式を求めた。
構造式における最も多い炭素数のペルフルオロ炭化水素基の炭素数(Cfn)を数えた。なお、ペルフルオロ炭化水素基が分岐鎖を有する場合にあっては、分岐鎖の炭素数を含めて数えた。
また、下式2より、含フッ素溶媒のフッ素原子含有率を計算した。
フッ素原子含有率(質量%)=(19×含フッ素溶媒のフッ素原子数/含フッ素溶媒の分子量)×100 ・・・式2
含フッ素弾性共重合体と、含フッ素溶媒とを1500rpm×15分混合した。その後、23℃で24hr放置し、含フッ素溶媒に含フッ素弾性共重合体が溶解したものを○と判定し、含フッ素溶媒に含フッ素弾性共重合体が溶解しなかったものを×と判定した。
作製した塗料で塗膜を形成した面に対して、鉛筆硬度試験(JIS K5600-5-4:1999)を行った。
(含フッ素弾性共重合体)
FFKM:TFE-PAVE系共重合体FFKMを構成する全単位の合計に対し、TFE単位の割合が69モル%、PAVE単位の割合が31モル%。FFKMの全質量に対して、ヨウ素原子を0.15質量%含有する。
(含フッ素溶媒)
含フッ素溶媒1:C14F24(ペルフルオロペルヒドロフェナントレン、F2ケミカル社製、製品名:フルテック(登録商標)PP-11)。
含フッ素溶媒2:CF3(CF2)7CH2CH3。
含フッ素溶媒3:CF3(CF2)5CH2CH3(AGC社製、製品名:アサヒクリン(登録商標)AC-6000)。
含フッ素溶媒4:CF3(CF2)4CF2H(AGC社製、製品名:アサヒクリン(登録商標)AC-2000)。
含フッ素溶媒5:CF3CF2CF(OCH3)CF(CF3)2(3M社製、製品名:ノベック(登録商標)7300)。
含フッ素溶媒6:(CF3(CF2)3)3N(3M社製、製品名:フロリナート(登録商標)FC-43)。
含フッ素溶媒7:CF3(CF2)3CH2CH3。
含フッ素溶媒8:C7OF15N、化合物10(3M社製、製品名:フロリナート(登録商標)FC-770)。
含フッ素溶媒9:CF3(CF2)3OCH3(3M社製、製品名:ノベック(登録商標)7100)。
含フッ素溶媒10:CF3(CF2)3OCH2CH3(3M社製、製品名:ノベック(登録商標)7200)。
含フッ素溶媒11:C5H3F7(1,1,2,2,3,3,4-ヘプタフルオロシクロペンタン、日本ゼオン社製、製品名:ゼオローラ(登録商標)H)。
含フッ素溶媒12:CF3(CHF)2CF2CF3(Chemours社製、製品名:バートレル(登録商標)XF))。
含フッ素溶媒13:CF3CH2OCF2CHF2(AGC社製、製品名:アサヒクリン(登録商標)AE-3000)。
含フッ素溶媒14:CClF2CF2CHFCl(AGC社製、製品名:アサヒクリン(登録商標)AK-225)。
含フッ素溶媒15:C6H4(CF3)2(1,2-ビス(トリフルオロメチル)シクロヘキサン)。
含フッ素溶媒16:CHF2CF2CH2OH。
含フッ素溶媒17:(CF3)2CHOH(セントラル硝子社製、1,1,1,3,3,3-ヘキサフルオロ-2-イソプロパノール(HFIP))。
含フッ素溶媒18:CF3(CF2)5COOCH3。
含フッ素溶媒19:CF3(CF2)7COOCH3。
なお、含フッ素溶媒2、7、15,18,19については、公知の方法で合成した。
(架橋剤)
2,5-ジメチル-2,5-ビス(tert-ブチルペルオキシ)ヘキサン(日油社製、製品名:パーヘキサ25B)。
(架橋助剤)
トリアリルイソシアヌレート シリカ60%希釈品、(日本化成社製、製品名:TAIC WH-60)。
(充填剤)
カーボンブラック(Cancarb Limited製、製品名:Thermax(登録商標)N990)。
シリカ(日本アエロジル社製、製品名:アエロジルR8200)。
(加工助剤)
ステアリン酸ナトリウム(日油社製、製品名:ノンサール(登録商標)SN-1))。
FFKMの8gと、表1に示す各例の含フッ素溶媒の40mlとを攪拌機(あわとり練太郎、シンキー社製)で1500rpm×15分撹拌した。含フッ素溶媒1~19について、溶解性を評価した。
なお、含フッ素溶媒1,6,11は、ペルフルオロカーボンである。含フッ素溶媒2,3,4,7,12、15は、ハイドロフルオロカーボンである。含フッ素溶媒5,9,10,13は、ハイドロフルオロエーテルである。含フッ素溶媒6、8は、窒素原子を有する含フッ素溶媒である。含フッ素溶媒14は、ハイドロクロロフルオロカーボンである。含フッ素溶媒16、17は、アルコールである。含フッ素溶媒18、19は、エステルである。
しかし、例1,2では、含フッ素溶媒1,2のCfnが7より大きく、沸点が160℃より大きいため、入手しにくく、溶媒が除去されにくかった。
例6では、含フッ素溶媒6の沸点が160℃より大きいため、溶媒が除去されにくかった。
例12,13では、含フッ素溶媒12、13のCfnが3未満であるため、FFKMを溶解できなかった。
例14~17では、含フッ素溶媒14~17のCfnが3未満であり、フッ素原子含有率が69質量%未満であるため、FFKMを溶解できなかった。
例19では、含フッ素溶媒19のCfnが7より大きく、フッ素原子含有率が69質量%未満であるため、FFKMを溶解できなかった。また、含フッ素溶媒19は、沸点が160℃より大きいため、溶媒が除去されにくい。
まず、表2に従って、FFKMを含むコンパウンドAと、FFKMを含むコンパウンドBとを調製した。
例20~23で得られた塗料をアルミニウム板の表面に塗布し、100℃に加熱して含フッ素溶媒4を除去した。さらに、窒素雰囲気下、150℃で30分加熱したのち、空気雰囲気下、200℃4時間加熱し、含フッ素弾性共重合体を架橋させ、塗膜を得た。得られた塗膜について膜硬度を上述の評価方法に従って評価した。また、塗膜の色調を肉眼で評価した。評価結果を表3に示す。
なお2017年10月12日に出願された日本特許出願2017-198408号の明細書、特許請求の範囲および要約書の全内容をここに引用し、本発明の明細書の開示として、取り入れるものである。
Claims (12)
- テトラフルオロエチレンに基づく単位と下式1で表される化合物に基づく単位とを有する含フッ素弾性共重合体および含フッ素溶媒を含み、
前記含フッ素溶媒が、少なくとも1つのペルフルオロ炭化水素基を有し、かつ最も炭素数の多いペルフルオロ炭化水素基の炭素数が3~7であり、
前記含フッ素溶媒の沸点が、50~160℃であり、
前記含フッ素溶媒の下式2で計算されるフッ素原子含有率が、69~80質量%であることを特徴とする含フッ素弾性共重合体組成物。
CF2=CFORf1 ・・・式1
ただし、Rf1は、炭素数1~10のペルフルオロアルキル基である。
フッ素原子含有率(質量%)=(19×含フッ素溶媒のフッ素原子数/含フッ素溶媒の分子量)×100 ・・・式2 - 前記含フッ素溶媒として、窒素原子を有する含フッ素溶媒、ハイドロフルオロカーボン、およびハイドロフルオロエーテルからなる群より選ばれる少なくとも一種を含む、請求項1に記載の含フッ素弾性共重合体組成物。
- さらに、架橋剤又は架橋剤と架橋助剤とを含む、請求項1又は2に記載の含フッ素弾性共重合体組成物。
- 架橋剤の含有量が、含フッ素弾性共重合体の100質量部に対して、0.3~10質量部であり、
架橋助剤を含む場合は、架橋助剤の含有量が、含フッ素弾性共重合体の100質量部に対して、0.1~10質量部である、請求項3に記載の含フッ素弾性共重合体組成物。 - さらに、充填剤および補強材の少なくとも一方を含む、請求項1~4のいずれか1項に記載の含フッ素共重合体組成物。
- 充填剤および補強材の合計の含有量が、含フッ素共重合体100部に対して、0.01~100質量部である、請求項5に記載の含フッ素共重合体組成物。
- 請求項1~6のいずれか1項に記載の含フッ素弾性共重合体組成物を含む、塗料。
- 請求項1~6のいずれか1項に記載の含フッ素弾性共重合体組成物を含む、接着剤。
- 請求項7に記載の塗料から形成された、前記含フッ素溶媒を含まない塗膜を有する、塗装物品。
- 前記塗料が、架橋剤又は架橋剤と架橋助剤とを含む塗料であり、前記塗膜が、架橋された含フッ素弾性共重合体からなる塗膜である、請求項9に記載の塗装物品。
- 架橋剤又は架橋剤と架橋助剤、テトラフルオロエチレンに基づく単位と下記式1で表される化合物に基づく単位とを有する含フッ素弾性共重合体、および、下記含フッ素溶媒を混合して、含フッ素弾性共重合体組成物を製造し、次いで前記含フッ素溶媒を除去することにより、含フッ素溶媒を含まない組成物を製造する方法であり、
前記含フッ素溶媒が、少なくとも1つのペルフルオロ炭化水素基を有し、かつ最も炭素数の多いペルフルオロ炭化水素基の炭素数が3~7であり、
前記含フッ素溶媒の沸点が、50~160℃であり、
前記含フッ素溶媒の下記式2で計算されるフッ素原子含有率が、69~80質量%であることを特徴とする前記含フッ素溶媒を含まない組成物の製造方法。
CF2=CFORf1 ・・・式1
ただし、Rf1は、炭素数1~10のペルフルオロアルキル基である。
フッ素原子含有率(質量%)=(19×含フッ素溶媒のフッ素原子数/含フッ素溶媒の分子量)×100 ・・・式2 - 前記含フッ素弾性共重合体組成物が、さらに充填剤および補強材の少なくとも一方を含む、請求項11に記載の前記含フッ素溶媒を含まない組成物の製造方法。
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JP2020513462A (ja) * | 2016-12-08 | 2020-05-14 | スリーエム イノベイティブ プロパティズ カンパニー | フルオロポリマー組成物及びコーティング |
US20210163648A1 (en) * | 2018-09-28 | 2021-06-03 | AGC Inc. | Fluorine-containing copolymer and method for producing same |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111234269B (zh) * | 2020-03-18 | 2022-05-06 | 山东东岳高分子材料有限公司 | 一种填充聚四氟乙烯分散树脂的制备方法 |
CN111675814B (zh) * | 2020-04-27 | 2022-06-07 | 山东东岳高分子材料有限公司 | 一种高流动氟树脂浆料及其制备方法 |
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Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5816474B2 (ja) | 1977-11-18 | 1983-03-31 | 日立電子株式会社 | トリガ信号発生回路 |
JPS6057494B2 (ja) | 1980-12-22 | 1985-12-16 | アルミニウム線材株式会社 | 導電用耐熱アルミニウム合金線材の製造法 |
JP2002519493A (ja) * | 1998-07-02 | 2002-07-02 | イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー | 無定形フルオロポリマーのための溶剤 |
WO2005049746A1 (ja) | 2003-11-21 | 2005-06-02 | Daikin Industries, Ltd. | 含フッ素エラストマー塗料組成物 |
WO2014030586A1 (ja) * | 2012-08-21 | 2014-02-27 | 旭硝子株式会社 | 硬化性含フッ素重合体、その製造方法及び含フッ素重合体硬化物 |
JP2014240496A (ja) | 2007-01-26 | 2014-12-25 | グリーン ツウィード オブ デラウェア インコーポレイテッド | ペルフルオロエラストマー材料を表面に結合する方法 |
WO2015068659A1 (ja) * | 2013-11-05 | 2015-05-14 | 旭硝子株式会社 | 接着剤 |
JP2015182381A (ja) * | 2014-03-25 | 2015-10-22 | 三井・デュポンフロロケミカル株式会社 | テトラフルオロエチレンとパーフルオロ(エチルビニルエーテル)との共重合体を含む複合成形体 |
JP2017198408A (ja) | 2016-04-28 | 2017-11-02 | 株式会社デンソー | アキュムレータ |
WO2018043165A1 (ja) * | 2016-08-29 | 2018-03-08 | 旭硝子株式会社 | 含フッ素重合体、その製造方法、および含フッ素重合体の硬化物を備える物品 |
WO2018159308A1 (ja) * | 2017-03-02 | 2018-09-07 | Agc株式会社 | 電線、コイルおよび電線の製造方法 |
WO2018159307A1 (ja) * | 2017-03-01 | 2018-09-07 | Agc株式会社 | 含フッ素重合体、その硬化物の製造方法および発光装置 |
WO2018163746A1 (ja) * | 2017-03-06 | 2018-09-13 | Agc株式会社 | 硬化性組成物、塗料、電線および樹脂物品 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3740369A (en) * | 1971-06-25 | 1973-06-19 | Du Pont | Low viscosity solution of fluoropolymer due to the use of polar organic compounds |
JP4355944B2 (ja) * | 2004-04-16 | 2009-11-04 | 信越化学工業株式会社 | パターン形成方法及びこれに用いるレジスト上層膜材料 |
JP5816474B2 (ja) | 2011-07-21 | 2015-11-18 | 日信工業株式会社 | シール部材及びその製造方法 |
JP6150483B2 (ja) * | 2012-09-27 | 2017-06-21 | 三井・デュポンフロロケミカル株式会社 | パーフルオロ(エチルビニルエーテル)を含有する非晶質フッ素重合体溶剤組成物 |
US10138352B2 (en) * | 2014-09-16 | 2018-11-27 | Daikin Industries, Ltd. | Fluoroelastomer composition and molded article |
JP6418976B2 (ja) * | 2015-02-19 | 2018-11-07 | 三井・ケマーズ フロロプロダクツ株式会社 | 撥水性表面に非晶性フッ素樹脂塗膜を形成させた多層積層体 |
KR20180048455A (ko) * | 2015-09-01 | 2018-05-10 | 아사히 가라스 가부시키가이샤 | 함불소 중합체, 그 제조 방법, 및 함불소 중합체의 경화물 |
CN110709465B (zh) * | 2017-06-06 | 2023-02-17 | 国立大学法人东京工业大学 | 含氟弹性体组合物及其成型品 |
-
2018
- 2018-10-05 CN CN201880066033.2A patent/CN111225950A/zh active Pending
- 2018-10-05 WO PCT/JP2018/037457 patent/WO2019073934A1/ja unknown
- 2018-10-05 KR KR1020207009648A patent/KR20200059236A/ko unknown
- 2018-10-05 JP JP2019548183A patent/JPWO2019073934A1/ja active Pending
- 2018-10-05 EP EP18865997.3A patent/EP3696226A4/en not_active Withdrawn
- 2018-10-11 TW TW107135785A patent/TW201922810A/zh unknown
-
2020
- 2020-03-26 US US16/830,643 patent/US11332561B2/en active Active
Patent Citations (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5816474B2 (ja) | 1977-11-18 | 1983-03-31 | 日立電子株式会社 | トリガ信号発生回路 |
JPS6057494B2 (ja) | 1980-12-22 | 1985-12-16 | アルミニウム線材株式会社 | 導電用耐熱アルミニウム合金線材の製造法 |
JP2002519493A (ja) * | 1998-07-02 | 2002-07-02 | イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー | 無定形フルオロポリマーのための溶剤 |
WO2005049746A1 (ja) | 2003-11-21 | 2005-06-02 | Daikin Industries, Ltd. | 含フッ素エラストマー塗料組成物 |
JP2014240496A (ja) | 2007-01-26 | 2014-12-25 | グリーン ツウィード オブ デラウェア インコーポレイテッド | ペルフルオロエラストマー材料を表面に結合する方法 |
WO2014030586A1 (ja) * | 2012-08-21 | 2014-02-27 | 旭硝子株式会社 | 硬化性含フッ素重合体、その製造方法及び含フッ素重合体硬化物 |
WO2015068659A1 (ja) * | 2013-11-05 | 2015-05-14 | 旭硝子株式会社 | 接着剤 |
JP2015182381A (ja) * | 2014-03-25 | 2015-10-22 | 三井・デュポンフロロケミカル株式会社 | テトラフルオロエチレンとパーフルオロ(エチルビニルエーテル)との共重合体を含む複合成形体 |
JP2017198408A (ja) | 2016-04-28 | 2017-11-02 | 株式会社デンソー | アキュムレータ |
WO2018043165A1 (ja) * | 2016-08-29 | 2018-03-08 | 旭硝子株式会社 | 含フッ素重合体、その製造方法、および含フッ素重合体の硬化物を備える物品 |
WO2018159307A1 (ja) * | 2017-03-01 | 2018-09-07 | Agc株式会社 | 含フッ素重合体、その硬化物の製造方法および発光装置 |
WO2018159308A1 (ja) * | 2017-03-02 | 2018-09-07 | Agc株式会社 | 電線、コイルおよび電線の製造方法 |
WO2018163746A1 (ja) * | 2017-03-06 | 2018-09-13 | Agc株式会社 | 硬化性組成物、塗料、電線および樹脂物品 |
Non-Patent Citations (1)
Title |
---|
See also references of EP3696226A4 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2020513462A (ja) * | 2016-12-08 | 2020-05-14 | スリーエム イノベイティブ プロパティズ カンパニー | フルオロポリマー組成物及びコーティング |
JP7170640B2 (ja) | 2016-12-08 | 2022-11-14 | スリーエム イノベイティブ プロパティズ カンパニー | フルオロポリマー組成物及びコーティング |
US20210163648A1 (en) * | 2018-09-28 | 2021-06-03 | AGC Inc. | Fluorine-containing copolymer and method for producing same |
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