WO2016076245A1 - 撥水撥油コーティング組成物及び透明皮膜 - Google Patents
撥水撥油コーティング組成物及び透明皮膜 Download PDFInfo
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- WO2016076245A1 WO2016076245A1 PCT/JP2015/081422 JP2015081422W WO2016076245A1 WO 2016076245 A1 WO2016076245 A1 WO 2016076245A1 JP 2015081422 W JP2015081422 W JP 2015081422W WO 2016076245 A1 WO2016076245 A1 WO 2016076245A1
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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
- C09D183/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
- C09D183/08—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/28—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material
- C03C17/30—Surface treatment of glass, not in the form of fibres or filaments, by coating with organic material with silicon-containing compounds
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
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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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1606—Antifouling paints; Underwater paints characterised by the anti-fouling agent
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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
- 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
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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
- C09D7/63—Additives non-macromolecular organic
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2217/00—Coatings on glass
- C03C2217/70—Properties of coatings
- C03C2217/76—Hydrophobic and oleophobic coatings
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/22—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen
- C08G77/24—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen halogen-containing groups
-
- 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
- C08K5/00—Use of organic ingredients
Definitions
- the present invention relates to a water / oil repellent coating composition and a transparent film obtained therefrom.
- the coating is required to have abrasion resistance.
- Patent Document 1 includes a long-chain material mainly composed of a fluorocarbon group and a hydrocarbon group, a short-chain material mainly composed of a fluorocarbon group, a hydrocarbon group, and a silyl group, and a siloxane group.
- a water- and oil-repellent and antifouling glass plate having a film containing a substance as a main component formed on its surface is disclosed.
- Patent Document 2 discloses a water-repellent and water-repellent antifouling treatment liquid containing at least a substance 1 containing a fluorocarbon group as a main component, a substance 2 containing a hydrocarbon group as a main component, and a solvent.
- Patent Document 3 discloses a first substance containing at least an organic fluorine-containing ether group or an organic fluorine-containing polyether group, a hydrocarbon group, and an alkoxysilyl group, a fluorocarbon group, and a hydrocarbon group.
- a second substance containing an alkoxysilyl group and different from the first substance, and (AO) 3 Si (OSi (OA) 2 ) p OA (p is 0 or an integer, A is an alkyl group, OA is Cl or NCO may also be used.
- An oil antifouling composite film forming solution is described.
- Patent Documents 1 to 3 a long chain substance and a short chain substance such as CF 3 — (CF 2 ) 7 — (CH 2 ) 2 —Si (OCH 3 ) 3 are dissolved in a predetermined solvent to form a composite.
- a composite film is formed on a glass plate by creating a film forming solution and immersing the glass plate in this solution are disclosed (Example 1 of Patent Document 1, Example 8 of Patent Document 2, Example 1 of Patent Document 3).
- Patent Document 4 discloses a perfluoropolyether group-containing silane compound having water repellency and oil repellency.
- the present invention provides a water / oil repellent coating composition capable of expressing a water / oil repellent property of a good water droplet and capable of obtaining a film with further improved wear resistance, and a transparent film obtained therefrom. Objective.
- the present inventors studied to further improve the wear resistance of the water / oil repellent composite film disclosed in Patent Documents 1 to 3.
- a first organosilicon compound (A) in which a fluorine-containing group having a perfluoroalkyl group or a perfluoropolyether group on the free end side and a hydrolyzable group are bonded to a silicon atom
- the organosilicon compound (B) is reacted with the perfluoroalkyl group or the perfluoropolyether group of the first organosilicon compound (A) while using the second organosilicon compound (B) as a spacer.
- the second organosilicon compound (B) has a vapor pressure at 100 ° C.
- the water- and oil-repellent coating composition of the present invention that has achieved the above-described problem is a fluorine-containing group having a perfluoroalkyl group or a perfluoropolyether group on the free end side and a hydrolyzable group bonded to a silicon atom.
- a second organosilicon compound (B) having a pressure of 1 atm or less.
- the fluorine-containing group of the first organosilicon compound (A) preferably contains a hydrocarbon group.
- the molecular length of the second organosilicon compound (B) is preferably shorter than the molecular length of the first organosilicon compound (A). More specifically, the longest straight chain portion of the alkyl group, fluorine-containing alkyl group, or fluorocarbon-containing group in the second organosilicon compound is that of the first organosilicon compound (A). It is preferable that the number of atoms is shorter than the longest straight chain portion of the fluorine-containing group.
- the second organosilicon compound (B) is preferably a compound represented by the following formula (1) or (2).
- Rf 1 each independently represents a fluorine atom or an alkyl group having 1 to 20 carbon atoms substituted with one or more fluorine atoms;
- Each R 1 independently represents a hydrogen atom or a lower alkyl group;
- Each R 2 independently represents an alkyl group having 1 to 20 carbon atoms;
- Each A independently represents —O—, —COO—, —OCO—, —NR—, —NRCO—, —CONR— (where R represents a hydrogen atom, a lower alkyl group, or a lower fluorine-containing alkyl group; Represent)
- Each B independently represents a hydrolyzable group;
- Each X independently represents a hydrolyzable group, a lower alkyl group or a lower fluorine-containing alkyl group, a1, b1, c1, d1, e1, and g1 are each independently an integer of 0 to 100, The order of each repeating unit with a1, b1, c1,
- the mass ratio of the second organosilicon compound (B) to the first organosilicon compound (A) is 0.1 to 50, or the water / oil repellent coating composition of the present invention is It is preferable that a solvent (C) is included, and it is also preferable that the solvent (C) is a fluorinated solvent.
- the present invention also includes a transparent film obtained from any of the above water- and oil-repellent coating compositions.
- the abrasion resistance of the film obtained therefrom can be improved.
- the water / oil repellent coating composition of the present invention is a first organic material in which a fluorine-containing group having a perfluoroalkyl group or a perfluoropolyether group on the free end side and a hydrolyzable group are bonded to a silicon atom.
- a silicon compound (A) and a second organosilicon compound (B) functioning as a spacer of the organosilicon compound (A) are included.
- the perfluoroalkyl group or the perfluoroalkyl group or the perfluoroalkyl group of the organosilicon compound (A) is sandwiched between the silicon atoms (or siloxane bonds) of the organosilicon compound (B).
- Fluoropolyether groups are arranged to improve water and oil repellency.
- the above-mentioned free end means the terminal of the side which is not couple
- the perfluoroalkyl group has water and oil repellency.
- the presence of this perfluoroalkyl group on the free end side of the fluorine-containing group improves the water / oil repellency.
- the number of carbon atoms of the perfluoroalkyl group (particularly the carbon number of the longest straight chain portion) is preferably 3 or more, more preferably 5 or more, and even more preferably 7 or more.
- the upper limit of the carbon number is not particularly limited. For example, even if it is about 20, excellent water / oil repellency is exhibited.
- the perfluoropolyether group is a group in which all hydrogen atoms of a polyalkylene ether group or a polyalkylene glycol dialkyl ether residue are replaced by fluorine atoms, a perfluoropolyalkylene ether group, or a perfluoropolyalkylene glycol dialkyl. It can also be called an ether residue.
- Perfluoropolyether groups also have water and oil repellency.
- the number of carbon atoms contained in the longest straight chain portion of the perfluoropolyether group is preferably 5 or more, more preferably 10 or more, and more preferably 20 or more.
- the upper limit of the carbon number is not particularly limited, and may be about 200, for example.
- the fluorine-containing group may have the perfluoroalkyl group or the perfluoropolyether group on the free end side. Accordingly, an appropriate linking group may be present on the side bonded to the silicon atom, and the perfluoroalkyl group or perfluoroalkyl group may be directly bonded to the silicon atom without the linking group.
- the linking group for example, a hydrocarbon group such as an alkylene group or an aromatic hydrocarbon group, a (poly) alkylene glycol group, or a group in which a part of these hydrogen atoms is substituted with F, and these are appropriately linked. And the like.
- the carbon number of the linking group is, for example, 1 or more and 20 or less, preferably 2 or more and 10 or less.
- a plurality of silicon atoms may be bonded to one linking group, and a plurality of perfluoroalkyl groups or perfluoropolyether groups may be bonded to one linking group.
- the number of fluorine-containing groups bonded to the silicon atom may be one or more, and may be 2 or 3. However, 1 or 2 is preferable, and 1 is particularly preferable.
- the hydrolyzable group is obtained by hydrolyzing / dehydrating condensation reaction (1) between the organosilicon compounds (A) or (2) the organosilicon compound (A) and active hydrogen (such as hydroxyl groups) on the substrate surface. Or (3) has an action of binding the organosilicon compounds (A) and (B).
- hydrolyzable groups include an alkoxy group (particularly an alkoxy group having 1 to 4 carbon atoms), a hydroxy group, an acetoxy group, an allyl group, and a halogen atom (particularly a chlorine atom).
- Preferred hydrolyzable groups are an alkoxy group, an allyl group, and a halogen atom, and a methoxy group, an ethoxy group, an allyl group, and a chlorine atom are particularly preferable.
- the number of hydrolyzable groups bonded to the silicon atom may be one or more, and may be 2 or 3. However, 2 or 3 is preferable, and 3 is particularly preferable.
- different hydrolyzable groups may be bonded to the silicon atom, but the same hydrolyzable group is bonded to the silicon atom.
- the total number of fluorine-containing groups and hydrolyzable groups bonded to silicon atoms is usually 4, but may be 2 or 3 (particularly 3). In the case of 3 or less, for example, an alkyl group (particularly an alkyl group having 1 to 4 carbon atoms), H, NCO, or the like can be bonded to the remaining bonds.
- the fluorine-containing group of the first organosilicon compound (A) may be linear or may have a side chain.
- Examples of the first organosilicon compound (A) include a compound represented by the following formula (3).
- Rf represents a fluorine atom or an alkyl group having 1 to 20 carbon atoms substituted with one or more fluorine atoms.
- Rf is preferably an alkyl group having 1 to 10 carbon atoms substituted with one or more fluorine atoms, more preferably a perfluoroalkyl group having 1 to 10 carbon atoms, and still more preferably 1 to 5 carbon atoms.
- Rf 2 each independently represents a fluorine atom or an alkyl group having 1 to 20 carbon atoms substituted with one or more fluorine atoms.
- Rf 2 is preferably each independently a fluorine atom or a fluorine-containing alkyl group having 1 to 2 carbon atoms, more preferably all fluorine atoms.
- R 3 each independently represents a hydrogen atom or a lower alkyl group.
- Each R 3 is preferably a hydrogen atom or an alkyl group having 1 or 2 carbon atoms, more preferably all hydrogen atoms.
- Each R 4 independently represents an alkyl group having 1 to 20 carbon atoms.
- R 4 is preferably an alkyl group having 1 to 5 carbon atoms.
- Each D independently represents —O—, —COO—, —OCO—, —NR—, —NRCO— or —CONR— (R represents a hydrogen atom, a lower alkyl group or a lower fluorine-containing alkyl group).
- D is preferably each independently —COO—, —O— or —OCO—, more preferably —O—.
- E represents a hydrolyzable group each independently.
- E is preferably an alkoxy group having 1 to 4 carbon atoms, an allyl group, or a halogen atom, and particularly preferably a methoxy group, an ethoxy group, an allyl group, or a chlorine atom.
- a2, b2, c2, d2, and e2 are each independently an integer of 0 to 600, and the total value of a2, b2, c2, d2, and e2 is 13 or more.
- a2, c2, and d2 are each independently 1/2 or less of b2, more preferably 1/4 or less, more preferably c2 or d2 is 0, and particularly preferably c2 and d2 are 0. It is.
- e2 is preferably 1/5 or more of the total value of a2, b2, c2, and d2, and is not more than the total value of a2, b2, c2, and d2.
- b2 is preferably 20 or more and 600 or less, more preferably 20 or more and 200 or less, and still more preferably 50 or more and 200 or less.
- e2 is preferably 4 or more and 600 or less, more preferably 4 or more and 200 or less, and still more preferably 10 or more and 200 or less.
- the total value of a2, b2, c2, d2, and e2 is preferably 20 or more and 600 or less, more preferably 20 or more and 200 or less, and further preferably 50 or more and 200 or less.
- the order of each repeating unit with a2, b2, c2, d2, e2 and parentheses is arbitrary in the formula, but is preferably the most fixed end side (the side bonded to the silicon atom of the fluorine-containing group).
- the repeating unit enclosed in parentheses with b2 is located closer to the free end than the repeating unit enclosed in parentheses with a2 on the most free end side, more preferably b2 on the most fixed end side.
- the repeating unit attached with d2 and enclosed in parentheses is located closer to the free end than the repeating unit attached with a2 or c2 on the most free end side and enclosed in parentheses.
- n is an integer of 1 or more and 3 or less. n is preferably 2 or more and 3 or less, more preferably 3.
- examples of the first organosilicon compound (A) include compounds represented by the following formula (4).
- Rf represents a fluorine atom or an alkyl group having 1 to 20 carbon atoms substituted with one or more fluorine atoms.
- Rf is preferably an alkyl group having 1 to 10 carbon atoms substituted with one or more fluorine atoms, more preferably a perfluoroalkyl group having 1 to 10 carbon atoms, and still more preferably 1 to 5 carbon atoms.
- Rf 3 each independently represents a fluorine atom or an alkyl group having 1 to 20 carbon atoms substituted with one or more fluorine atoms.
- Rf 3 is preferably each independently a fluorine atom or a fluorine-containing alkyl group having 1 to 2 carbon atoms, more preferably all fluorine atoms.
- R 5 each independently represents a hydrogen atom or a lower alkyl group.
- R 5 is preferably each independently a hydrogen atom or an alkyl group having 1 or 2 carbon atoms, more preferably all hydrogen atoms.
- R 6 independently represents an alkyl group having 1 to 20 carbon atoms.
- R 6 is preferably an alkyl group having 1 to 5 carbon atoms.
- G independently represents —O—, —COO—, —OCO—, —NR—, —NRCO—, —CONR— (R represents a hydrogen atom, a lower alkyl group or a lower fluorine-containing alkyl group).
- G is preferably each independently —COO—, —O—, —OCO—, more preferably all —O—.
- J independently represents a hydrolyzable group. J is preferably an alkoxy group, an allyl group, or a halogen atom, and particularly preferably a methoxy group, an ethoxy group, an allyl group, or a chlorine atom.
- Y each independently represents a hydrogen atom or a lower alkyl group.
- Y is preferably independently a hydrogen atom or an alkyl group having 1 or 2 carbon atoms, more preferably all hydrogen atoms.
- Z each independently represents a hydrogen atom or a halogen atom.
- Z is preferably a hydrogen atom.
- a3, b3, c3, d3, and e3 are each independently an integer of 0 or more and 600 or less, and the total value of a3, b3, c3, d3, and e3 is 13 or more.
- a3, c3 and d3 are each independently 1/2 or less of b3, more preferably 1/4 or less, more preferably c3 or d3 is 0, and particularly preferably c3 and d3 are 0. It is.
- e3 is preferably not less than 1/5 of the total value of a3, b3, c3, and d3, and not more than the total value of a3, b3, c3, and d3.
- b3 is preferably 20 or more and 600 or less, more preferably 20 or more and 200 or less, and still more preferably 50 or more and 200 or less.
- e3 is preferably 4 or more and 600 or less, more preferably 4 or more and 200 or less, and still more preferably 10 or more and 200 or less.
- the total value of a3, b3, c3, d3, and e3 is preferably 20 or more and 600 or less, preferably 20 or more and 200 or less, and more preferably 50 or more and 200 or less.
- h3 is an integer of 0 or more and 2 or less, preferably 0 or more and 1 or less
- q is an integer of 1 or more and 10 or less, preferably 1 or more and 8 or less.
- the order of the repeating units a3, b3, c3, d3, and e3 and enclosed in parentheses is arbitrary in the formula, but is preferably the most fixed end side (side bonded to the silicon atom of the fluorine-containing group).
- the repeating unit with b3 in parentheses is positioned on the free end side more than the repeating unit with a3 on the most free end side and more preferably b3 on the most fixed end side.
- the repeating unit enclosed in parentheses with d3 is located on the free end side than the repeating unit enclosed in parentheses with a3 or c3 on the most free end side.
- p is an integer of 1 to 3, preferably 2 to 3, more preferably 3.
- “lower” means having 1 to 4 carbon atoms.
- a compound having a vapor pressure of 1 atm or less at a temperature of 100 ° C. is used as the second organosilicon compound (B) used as the spacer of the first organosilicon compound (A).
- the wear resistance of the resulting film is improved.
- the said compound does not need to have a boiling point, when it has a boiling point, the compound from which the boiling point becomes 100 degreeC or more corresponds to the said compound.
- the temperature at which the vapor pressure is 1 atm or higher is 110 ° C. or higher, more preferably 120 ° C. or higher, and still more preferably 130 ° C. or higher.
- the upper limit of the temperature at which the vapor pressure becomes 1 atm or higher is not particularly limited, and may be a compound that starts decomposition before the vapor pressure becomes 1 atm or more.
- the second organosilicon compound (B) needs to undergo a condensation reaction with the first organosilicon compound (A) or active hydrogen such as a hydroxyl group on the substrate surface.
- a compound in which a fluorocarbon-containing group and a hydrolyzable group are bonded to a silicon atom; or a hydrolyzable silane oligomer can be used.
- Such a compound can function as a spacer of the compound (A), thereby enhancing the water / oil repellency characteristics due to the fluorine-containing group of the compound (A).
- the molecular length of the second organosilicon compound (B) is preferably shorter than the molecular length of the first organosilicon compound (A). By shortening the molecular length of the compound (B), the fluorine-containing group of the compound (A) is easily exposed on the surface of the film, and the water / oil repellency is further enhanced.
- the molecular length of the second organosilicon compound (B) is preferably 1 ⁇ 2 or less, more preferably 1/5 or less, and even more preferably the molecular length of the first organosilicon compound (A). Is 1/10 or less.
- the longest straight chain portion is shorter in terms of the number of atoms than the longest straight chain portion of the fluorine-containing group of the first organosilicon compound (A).
- the second organosilicon compound (B) preferably contains a fluorine atom. More preferably, it is a compound represented.
- the fluorinated carbon-containing group is preferably a group having a fluoroalkyl group at the end, and particularly a group having a trifluoromethyl group at the end. Is preferred.
- the group having a fluoroalkyl group at the end include a fluoroalkyl group, a fluoroalkoxyalkylene group, a fluoroalkylsilylalkylene group, a fluoroalkylcarbonyloxyalkylene group, a fluoroalkylarylene group, a fluoroalkylalkenylene group, and a fluoroalkylalkynylene group.
- fluoroalkyl group examples include fluoromethyl group, fluoroethyl group, fluoropropyl group, fluorobutyl group, fluoropentyl group, fluorohexyl group, fluoroheptyl group, fluorooctyl group, fluorononyl group, fluorodecyl group, fluoro Examples thereof include a fluoroalkyl group having 1 to 12 carbon atoms such as an undecyl group and a fluorododecyl group.
- fluoroalkoxyalkylene group examples include a fluoromethoxy C 5-20 alkylene group, a fluoroethoxy C 5-20 alkylene group, a fluoropropoxy C 5-20 alkylene group, and a fluorobutoxy C 5-20 alkylene group.
- the fluoroalkyl silyl alkylene group for example, fluoromethyl silyl C 5-20 alkylene group, fluoroethyl silyl C 5-20 alkylene group, fluoropropyl silyl C 5-20 alkylene group, fluoro-butylsilyl C 5-20 alkylene group, fluoro pentylsilyl C 5-20 alkylene group, fluoro hexylsilyl C 5-20 alkylene group, Puchirushiriru to fluoro C 5-20 alkylene group, such as perfluorooctyl silyl C 5-20 alkylene group.
- Examples of the fluoroalkylcarbonyloxyalkylene group include a fluoromethylcarbonyloxy C 5-20 alkylene group, a fluoroethylcarbonyloxy C 5-20 alkylene group, a fluoropropylcarbonyloxy C 5-20 alkylene group, and a fluorobutylcarbonyloxy C 5-20.
- Examples include an alkylene group.
- Examples of the fluoroalkylarylene group include a fluoro C 1-8 alkyl phenylene group and a fluoro C 1-8 alkyl naphthylene group.
- Examples of the fluoroalkyl alkenylene group include a fluoro C 1-17 alkyl vinylene group.
- Examples of the alkynylene group include a fluoro C 1-17 alkylethynylene group.
- hydrolyzable group of the second organosilicon compound (B) examples include the same hydrolyzable groups as exemplified for the compound (A).
- Preferred hydrolyzable groups include an alkoxy group, an allyl group, and A halogen atom, particularly preferably a methoxy group, an ethoxy group, an allyl group, or a chlorine atom.
- hydrolyzable groups may be the same or different, but are preferably the same.
- the total number of fluorocarbon-containing groups and hydrolyzable groups bonded to silicon atoms is usually 4, but may be 2 or 3 (particularly 3). In the case of 3 or less, for example, an alkyl group (particularly an alkyl group having 1 to 4 carbon atoms), H, a cyano group, or the like can be bonded to the remaining bonds.
- the total number of fluorocarbon-containing groups and hydrolyzable groups is preferably 4.
- the number of fluorocarbon-containing groups is 3, the number of hydrolyzable groups is 1, the fluorocarbon-containing group, and Either the number of hydrolyzable groups may be 2, the number of fluorocarbon-containing groups may be 1 and the number of hydrolyzable groups may be 3, but the number of fluorocarbon-containing groups is 1 and hydrolyzable.
- the number of groups is preferably 3.
- the combination of the fluorocarbon-containing group and the hydrolyzable group is not particularly limited, and may include any of those including formula (1) described later and those not including, but preferably a fluoroalkyl group and an alkoxy group.
- Combinations fluoroalkylalkoxysilanes, etc., especially fluoroalkyltrialkoxysilanes
- combinations of fluoroalkyl groups and allyl groups fluoroalkylallylsilanes, etc., especially fluoroalkyltriallylsilanes
- combinations of fluoroalkyl groups and halogen atoms fluoro Alkylhalosilane, etc., especially fluoroalkyltrihalosilane.
- the hydrolyzable silane oligomer is a silane compound having two or more hydrolyzable groups, preferably two or more (particularly three) hydrolyzable groups and fluorine-containing groups (particularly lower groups).
- the number of silicon atoms (condensation number) contained in the oligomer is, for example, 3 or more, preferably 5 or more, and more preferably 7 or more.
- the condensation number is preferably 15 or less, more preferably 13 or less, and even more preferably 10 or less.
- Examples of the hydrolyzable group possessed by the oligomer include alkoxy groups such as methoxy group, ethoxy group, propoxy group, and butoxy group, and allyl groups, and preferred are methoxy group, ethoxy group, and allyl group.
- the oligomer may have one or more of these hydrolyzable groups, and preferably has one.
- the second organosilicon compound (B) can be preferably represented by the following formula (1) or (2).
- Formula (1) is a preferred example of a compound in which a fluorocarbon-containing group and a hydrolyzable group are bonded to a silicon atom
- formula (2) is a preferred example of a hydrolyzable silane oligomer.
- Each Rf 1 independently represents a fluorine atom or an alkyl group having 1 to 20 carbon atoms substituted with one or more fluorine atoms;
- Each R 1 independently represents a hydrogen atom or a lower alkyl group;
- Each R 2 independently represents an alkyl group having 1 to 20 carbon atoms;
- Each A independently represents —O—, —COO—, —OCO—, —NR—, —NRCO—, —CONR— (wherein R represents a hydrogen atom, a lower alkyl group, or a lower fluorine-containing alkyl group).
- Each B independently represents a hydrolyzable group; a1, b1, c1, d1, and e1 are each independently an integer of 0 to 100, The order of each repeating unit with a1, b1, c1, d1, e1 and parentheses is arbitrary in the formula, The total value of a1, b1, c1, d1, and e1 is 100 or less, m is an integer of 1 to 3.
- “lower” means having 1 to 4 carbon atoms.
- Rf 1 is preferably a fluorine atom or a perfluoroalkyl having 1 to 10 carbon atoms (more preferably 1 to 5 carbon atoms).
- R 1 is preferably a hydrogen atom or alkyl having 1 to 4 carbon atoms.
- R 2 is preferably an alkyl group having 1 to 5 carbon atoms.
- A is preferably —O—, —COO—, or —OCO—.
- B is preferably an alkoxy group having 1 to 4 carbon atoms, an allyl group, or a halogen atom, more preferably an alkoxy group having 1 to 4 carbon atoms, an allyl group, or a chlorine atom, and still more preferably an alkoxy group having 1 to 4 carbon atoms.
- a1 is preferably 1 to 30, more preferably 1 to 25, still more preferably 1 to 10, particularly preferably 1 to 5, and most preferably 1 to 2.
- b1 is preferably from 0 to 15, more preferably from 0 to 10.
- c1 is preferably 0 to 5, more preferably 0 to 2.
- d1 is preferably from 0 to 4, more preferably from 0 to 2.
- e1 is preferably 0 to 4, more preferably 0 to 2.
- m is preferably 2 to 3, and more preferably 3.
- the total value of a1, b1, c1, d1, and e1 is preferably 3 or more, more preferably 5 or more, and preferably 80 or less, more preferably 50 or less, and still more preferably 20 or less.
- Rf 1 is a fluorine atom or a perfluoroalkyl having 1 to 5 carbon atoms
- R 1 is a hydrogen atom
- B is a methoxy group or an ethoxy group
- c1, d1, and e1 are all 0
- M is 3
- a1 is preferably 1 to 5
- b1 is preferably 0 to 5.
- compounds in which a fluorocarbon-containing group and a hydrolyzable group are bonded to a silicon atom include, for example, CF 3 —Si— (OCH 3 ) 3 , C j F 2j + 1 -Si- (OC 2 H 5 ) 3 (j is an integer of 1 to 12), among which C 4 F 9 -Si- (OC 2 H 5 ) 3 , C 6 F 13 -Si- (OC 2 H 5 ) 3 , C 7 F 15 —Si— (OC 2 H 5 ) 3 , and C 8 F 17 —Si— (OC 2 H 5 ) 3 are preferred.
- CF 3 (CF 2 ) m — (CH 2 ) n SiCl 3 , CF 3 (CF 2 ) m — (CH 2 ) n Si (OCH 3 ) 3 , CF 3 (CF 2 ) m — (CH 2 ) n Si (OC 2 H 5 ) 3 may also be mentioned (m is 1 to 10, preferably 3 to 7, and n is 1 to 5, preferably 2 to 4. ).
- CF 3 (CF 2 ) p — (CH 2 ) q —Si— (CH 2 CH ⁇ CH 2 ) 3 can also be mentioned (p is 2 to 10, preferably 2 to 8, and q Are all 1 to 5, preferably 2 to 4).
- the following formula (2) is a preferred example when the second organosilicon compound (B) is a hydrolyzable silane oligomer.
- Each X independently represents a hydrolyzable group, a lower alkyl group, or a lower fluorine-containing alkyl group; g1 is an integer of 0 or more and 100 or less. In the formula (2), “lower” means having 1 to 4 carbon atoms.
- hydrolyzable group examples include alkoxy groups such as methoxy group, ethoxy group, propoxy group, and butoxy group, and allyl group.
- At least one of X preferably contains a hydrolyzable group (particularly an ethoxy group, a methoxy group, or an allyl group), more preferably an alkoxy group, and particularly preferably an ethoxy group.
- g1 is preferably 0 or more and 10 or less, more preferably 0 or more and 7 or less. It is also preferred that at least one of X is a lower fluorine-containing alkyl group.
- hydrolyzable silane oligomer examples include (H 5 C 2 O) 3 —Si— (OSi (OC 2 H 5 ) 2 ) 4 OC 2 H 5 , (H 3 CO) 2 Si (CH 2 CH 2 CF 3 )-(OSSiOCH 3 (CH 2 CH 2 CF 3 )) 4 —OCH 3 and the like.
- the first organosilicon compound (A) and the second organosilicon compound (B) are preferably used in an appropriate mass ratio, and the second organosilicon with respect to the first organosilicon compound (A)
- the mass ratio of the compound (B) is preferably 0.1 to 50.
- the mass ratio is more preferably 0.2 to 40, still more preferably 0.5 to 30.
- the water / oil repellent coating composition of the present invention preferably further contains a solvent (C).
- a fluorine-based solvent is preferable.
- fluorine-based solvents include CFCs, hydrofluoroethers such as Novec (manufactured by 3M), perfluorocarbons such as florinart (manufactured by 3M), hydrochlorofluorocarbons such as Asahi Clin AK225 (manufactured by Asahi Glass), Examples thereof include hydrofluorocarbons such as Asahi Clin AC2000 (Asahi Glass Co., Ltd.).
- an organic chlorine-based solvent such as chloroform may be further added.
- the total amount of the second organosilicon compound (B) can be appropriately selected depending on the film forming method. For example, in the case of coating by a wet method, it is preferably 0.001 to 20% by mass, more preferably 0.01 to 5.0% by mass, and still more preferably 0.01 to 0.2% by mass. is there. If the concentration is higher than this, surplus compounds bleed out on the coating film, the coating film becomes white and cloudy, and the wear resistance is significantly reduced.
- the water / oil repellent coating composition may further contain a silanol condensation catalyst.
- the silanol condensation catalyst include inorganic acids such as hydrochloric acid and nitric acid, organic acids such as acetic acid, metal complexes such as titanium complexes (for example, ORGATICS TC-750 manufactured by Matsumoto Fine Chemical) and tin complexes, and metal alkoxides.
- the amount of the silanol condensation catalyst is, for example, 0.00001 to 0.1% by mass with respect to the total amount of the first organosilicon compound (A), the second organosilicon compound (B), and the solvent (C).
- the amount is preferably 0.00002 to 0.01% by mass, more preferably 0.0005 to 0.001% by mass.
- the water / oil repellent coating composition is an antioxidant, a rust inhibitor, a UV absorber, a light stabilizer, a fungicide, an antibacterial agent, a bioadhesion inhibitor, and a deodorant as long as the effects of the present invention are not impaired.
- various additives such as pigments, flame retardants and antistatic agents may be contained.
- antioxidants examples include the following phenol-based antioxidants, sulfur-based antioxidants, phosphorus-based antioxidants, and hindered amine-based antioxidants.
- 3,3′-thiodipropionic acid di-n-dodecyl ester 3,3′-thiodipropionic acid di-n-tetradecyl ester, 3,3′-thiodipropionic acid di-n-octadecyl ester, Sulfur-based antioxidants such as tetrakis (3-dodecylthiopropionic acid) pentaerythrityl ester.
- tris (2,4-di-t-butylphenyl) phosphite bis (2,4-di-t-butylphenyl) pentaerythritol diphosphite, bis (2,6-di-t-butyl-4-methyl) Phenyl) pentaerythritol diphosphite, bis (2,4-dicumylphenyl) pentaerythritol diphosphite, tetrakis (2,4-di-t-butylphenyl) -4,4'-biphenylene diphosphonite, bis- [2,4-di -Phosphorous antioxidants such as t-butyl, (6-methyl) phenyl] ethyl phosphite.
- sebacic acid bis (2,2,6,6-tetramethyl-4-piperidyl) ester (melting point 81-86 ° C), 2,2,6,6-tetramethyl-4-piperidyl methacrylate (melting point 58 ° C)
- rust preventive examples include alkanolamines, quaternary ammonium salts, alkanethiols, imidazolines, sodium metavanadate, bismuth citrate, phenol derivatives, polyalkenylamines, alkylimidazoline derivatives, dianoalkylamines, carboxylic acid amides.
- UV absorber / light stabilizer examples include 2- (5-methyl-2-hydroxyphenyl) benzotriazole, 2- [2-hydroxy-3,5-bis ( ⁇ , ⁇ -dimethylbenzyl) phenyl]- 2H-benzotriazole, 2- (3-t-butyl-5-methyl-2-hydroxyphenyl) -5-chlorobenzotriazole, 2- (2′-hydroxy-5′-t-octylphenyl) benzotriazole, methyl -3- [3-tert-butyl-5- (2H-benzotriazol-2-yl) -4-hydroxyphenyl] propionate-condensate with polyethylene glycol (molecular weight about 300), hydroxyphenylbenzotriazole derivative, 2- (4,6-Diphenyl-1,3,5-triazin-2-yl) -5 [(hexyl) oxy] -phen And UV absorbers / light stabilizers such as diol and 2-ethoxy-2'-ethy
- Antifungal / antibacterial agents include, for example, 2- (4-thiazolyl) benzimidazole, sorbic acid, 1,2-benzisothiazolin-3-one, (2-pyridylthio-1-oxide) sodium, dehydroacetic acid, 2- Methyl-5-chloro-4-isothiazolone complex, 2,4,5,6-tetrachlorophthalonitrile, methyl 2-benzimidazolecarbamate, methyl 1- (butylcarbamoyl) -2-benzimidazolecarbamate, mono or dibromo Antifungal / antibacterial agents such as cyanoacetamides, 1,2-dibromo-2,4-dicyanobutane, 1,1-dibromo-1-nitropropanol and 1,1-dibromo-1-nitro-2-acetoxypropane It may contain.
- 2- (4-thiazolyl) benzimidazole sorbic acid
- biofouling inhibitor examples include tetramethylthiuram disulfide, bis (N, N-dimethyldithiocarbamate) zinc, 3- (3,4-dichlorophenyl) -1,1-dimethylurea, dichloro-N-(( Dimethylamino) sulfonyl) fluoro-N- (P-tolyl) methanesulfenamide, pyridine-triphenylborane, N, N-dimethyl-N′-phenyl-N ′-(fluorodichloromethylthio) sulfamide, thiocyanic acid first Copper (1), cuprous oxide, tetrabutylthiuram disulfide, 2,4,5,6-tetrachloroisophthalonitrile, zinc ethylenebisdithiocarbamate, 2,3,5,6-tetrachloro-4- (Methylsulfonyl) pyridine, N- (2,4,6-trichlor
- deodorant examples include lactic acid, succinic acid, malic acid, citric acid, maleic acid, malonic acid, ethylenediamine polyacetic acid, alkane-1,2-dicarboxylic acid, alkene-1,2-dicarboxylic acid, cycloalkane- Organic acids such as 1,2-dicarboxylic acid, cycloalkene-1,2-dicarboxylic acid, naphthalenesulfonic acid; fatty acid metals such as zinc undecylenate, zinc 2-ethylhexanoate, zinc ricinoleate; iron oxide, iron sulfate , Zinc oxide, zinc sulfate, zinc chloride, silver oxide, copper oxide, metal (iron, copper, etc.) chlorophyllin sodium, metal (iron, copper, cobalt etc.) phthalocyanine, metal (iron, copper, cobalt etc.) tetrasulfonic acid phthalocyanine Metal compounds such as titanium dioxide, visible light responsive titanium dioxide
- the pigment examples include carbon black, titanium oxide, phthalocyanine pigment, quinacridone pigment, isoindolinone pigment, perylene or perine pigment, quinophthalone pigment, diketopyrrolo-pyrrole pigment, dioxazine pigment, and disazo condensation pigment. And benzimidazolone pigments.
- flame retardant examples include flame retardants such as decabromobiphenyl, antimony trioxide, phosphorus flame retardant, and aluminum hydroxide.
- antistatic agent examples include quaternary ammonium salt type cationic surfactants, betaine type amphoteric surfactants, alkyl phosphate type anionic surfactants, primary amine salts, secondary amine salts, Cationic surfactants such as tertiary amine salts, quaternary amine salts and pyridine derivatives, sulfated oils, soaps, sulfated ester oils, sulfated amide oils, sulfated ester salts of olefins, fatty alcohol sulfate esters, alkyl Anionic surfactants such as sulfate esters, fatty acid ethyl sulfonates, alkyl naphthalene sulfonates, alkyl benzene sulfonates, oxalate ester sulfonates and phosphate ester salts, partial fatty acid esters of polyhydric alcohols, fatty alcohols Ethylene
- Lubricants may also be contained in the water / oil repellent coating composition of the present invention.
- the content of the various additives is, for example, 0. 0% relative to the total weight of the water / oil repellent coating composition of the present invention. It is 01 wt% or more and 70 wt% or less, preferably 0.1 wt% or more and 50 wt% or less, more preferably 0.5 wt% or more and 30 wt% or less, and further preferably 2 wt% or more and 15 wt% or less.
- the present invention also includes a transparent film obtained from the water / oil repellent coating composition described above.
- the transparent film of the present invention is formed by forming the water- and oil-repellent coating composition of the present invention on a substrate and leaving it in the air, so that moisture in the air is taken in and the hydrolyzable group is hydrolyzed, Siloxane bonds are formed.
- the obtained transparent film may be further heated and dried.
- a film-forming solution obtained by diluting the first organosilicon compound (A) and the second organosilicon compound (B) with a solvent (C) is stirred at room temperature for a predetermined time, and the solution is used as a substrate. Then, the film is allowed to stand at room temperature and in the air, and further dried by heating at 50 to 300 ° C., preferably 100 to 200 ° C., to obtain the transparent film of the present invention.
- a dip coating method, a roll coating method, a bar coating method, a spin coating method, a spray coating method, a die coating method, a vapor deposition method, or the like can be appropriately employed.
- the film thickness of the transparent film is, for example, 1 to 200 nm, preferably 1 to 20 nm.
- the transparent film thus obtained has water and oil repellency and is excellent in wear resistance.
- the transparent film of the present invention has a contact angle of 90 ° or more (preferably 100 ° or more, more preferably 110 ° or more, more preferably 110 ° or more, with a water droplet volume of 3 ⁇ l on a smooth surface having no irregularities.
- the upper limit is limited. For example, it is 120 ° or less.
- the transparent film of the present invention preferably has a total light transmittance in accordance with JIS K 7136-1 or JIS K 7375 of 70% or more, more preferably 80% or more, and 85% or more. More preferably it is.
- the substrate on which the transparent film of the present invention is formed is not particularly limited, and may be either an organic material or an inorganic material, the shape may be either a flat surface or a curved surface, or a three-dimensional combination of a number of surfaces. It may be a mechanical structure.
- the organic material include thermoplastic resins such as acrylic resin, polycarbonate resin, polyester resin, styrene resin, acrylic-styrene copolymer resin, cellulose resin, polyolefin resin, and polyvinyl alcohol; phenol resin, urea resin, melamine resin, epoxy
- thermosetting resins such as resins, unsaturated polyesters, silicone resins, and urethane resins.
- the inorganic material examples include metals such as iron, silicon, copper, zinc, and aluminum, alloys containing these metals, ceramics, and glass.
- the substrate may be subjected to an easy adhesion treatment in advance.
- the easy adhesion treatment include hydrophilic treatment such as corona treatment, plasma treatment, and ultraviolet treatment.
- primer treatment with a resin, a silane coupling agent, tetraalkoxysilane, or the like may be used.
- a primer layer between the transparent film of the present invention and the substrate because durability such as moisture resistance and alkali resistance can be further improved.
- the layer formed using the composition for base layer formation containing the (D) component which consists of a compound represented by following formula (5) and / or its partial hydrolysis-condensation product is preferable.
- Si (X 2 ) 4 (5) (However, in formula (5), each X 2 independently represents a halogen atom, an alkoxy group or an isocyanate group.)
- X 2 is preferably a chlorine atom, an alkoxy group having 1 to 4 carbon atoms or an isocyanate group, and the four X 2 are preferably the same.
- Si (NCO) 4 , Si (OCH 3 ) 4 , Si (OC 2 H 5 ) 4 and the like are preferably used as such a compound represented by the formula (5).
- a component may be used individually by 1 type and may use 2 or more types together.
- the component (D) contained in the primer layer forming composition may be a partially hydrolyzed condensate of the compound represented by the above formula (5).
- the partial hydrolysis-condensation product of the compound represented by the above formula (5) can be obtained by applying a general hydrolysis-condensation method using an acid or a base catalyst.
- the degree of condensation (degree of multimerization) of the partially hydrolyzed condensate needs to be such that the product is dissolved in the solvent.
- the component (D) may be a compound represented by the above formula (5) or a partial hydrolysis condensate of the compound represented by the above formula (5).
- the underlayer-forming composition comprises the above component (D), a compound represented by the following formula (6) (sometimes referred to as compound (6)) and / or a partial hydrolysis condensate thereof (E). Or a partial hydrolysis-condensation product of the component (D) and the component (E) (however, the component (D) and / or the compound (6) may be included). There may be.
- the compound represented by the formula (6) is a compound having hydrolyzable silyl groups or silanol groups at both ends with a divalent organic group in between.
- examples of the hydrolyzable group represented by X 3 include the same groups or atoms as those for X 2 .
- X 3 is preferably an alkoxy group or an isocyanate group, and particularly preferably an alkoxy group.
- the alkoxy group an alkoxy group having 1 to 4 carbon atoms is preferable, and a methoxy group or an ethoxy group is more preferable. These are appropriately selected and used according to the purpose of manufacture, application and the like.
- a plurality of X 3 present in the formula (6) may be the same group or different groups, and are preferably the same group from the viewpoint of easy availability.
- the component contained in the primer layer forming composition may be a partially hydrolyzed condensate of the compound represented by formula (6).
- the partially hydrolyzed condensate of the compound represented by the formula (6) can be obtained by the same method as described in the production of the partially hydrolyzed condensate of the compound represented by the formula (5).
- the degree of condensation (degree of multimerization) of the partially hydrolyzed condensate must be such that the product is dissolved in the solvent.
- the partial hydrolysis-condensation product of the compound represented by Formula (6) may be sufficient, and it is represented by Formula (6).
- It may be a mixture of a compound and a partial hydrolysis condensate thereof, for example, a partial hydrolysis condensate of the compound including an unreacted compound represented by the formula (6).
- a commercial item as a compound shown by the said Formula (6), and its partial hydrolysis-condensation product, It is possible to use such a commercial item for this invention.
- various polysilazanes capable of obtaining an oxide film mainly composed of silicon similar to the above formula (5) may be used for the underlayer.
- the primer layer-forming composition usually contains an organic solvent in addition to the solid content as a layer constituent component in consideration of economy, workability, ease of controlling the thickness of the resulting primer layer, and the like.
- the organic solvent is not particularly limited as long as it dissolves the solid content contained in the primer layer forming composition.
- Examples of the organic solvent include the same compounds as those used in the water / oil repellent coating composition of the present invention.
- the organic solvent is not limited to one kind, and two or more kinds of solvents having different polarities and evaporation rates may be mixed and used.
- the composition for primer layer formation contains the partial hydrolysis-condensation product and the partial hydrolysis-condensation product, you may include the solvent used in order to manufacture these.
- the composition for forming a primer layer even if it does not contain a partial hydrolysis condensate or partial hydrolysis cocondensate, in order to promote the hydrolysis cocondensation reaction, It is also preferable to blend a catalyst such as an acid catalyst that is generally used. Even when a partially hydrolyzed condensate or a partially hydrolyzed cocondensate is included, when the catalyst used for the production thereof does not remain in the composition, it is preferable to add a catalyst.
- the underlayer-forming composition may contain water for the above-mentioned components to undergo a hydrolysis condensation reaction or a hydrolysis cocondensation reaction.
- the underlayer using the primer layer forming composition As a method for forming the underlayer using the primer layer forming composition, a known method for an organosilane compound-based surface treatment agent can be used.
- the composition for forming the underlayer is applied to the surface of the substrate by methods such as brush coating, flow coating, spin coating, dip coating, squeegee coating, spray coating, and hand coating, and is necessary in the air or in a nitrogen atmosphere.
- the base layer can be formed by curing after drying according to the above. Curing conditions are appropriately controlled depending on the type and concentration of the composition used.
- the thickness of the primer layer is not particularly limited as long as it can provide moisture resistance to the transparent film formed thereon, can also provide adhesion to the substrate, and can also barrier alkali and the like from the substrate.
- the transparent film of the present invention is a display device such as a touch panel display, an optical element, a semiconductor element, a building material, a nanoimprint technology, a solar cell, a metal product such as a window glass of an automobile or a building, a cooking appliance, or a ceramic product such as tableware, or a plastic. It is possible to form a film suitably for manufactured automobile parts and the like, which is industrially useful. It can also be used for fishing nets, insect catching nets, water tanks, and the like. Furthermore, it can be used for various indoor facilities such as kitchens, bathrooms, washstands, mirrors, toilet articles, ceramics such as chandeliers and tiles, artificial marble, and air conditioners.
- It can also be used as an antifouling treatment for jigs, inner walls, pipes and the like in factories. It is also suitable for goggles, glasses, helmets, slingshots, textiles, umbrellas, play equipment, soccer balls and the like. Furthermore, it can also be used as an anti-adhesive agent for various packaging materials such as food packaging materials, cosmetic packaging materials, and the inside of pots.
- a first organosilicon compound (A) (molecular weight of about 8000) represented by the following formula (a) was synthesized by the method described in Synthesis Examples 1 and 2 of JP-A-2014-15609.
- n 43 and m is an integer of 1-6.
- Example 1 A compound represented by the above formula (a) as the first organosilicon compound (A) (hereinafter referred to as compound (a)), and FAS9E (C 4 F 9 —C 2 H 4 as the second organosilicon compound (B).
- compound (a) the first organosilicon compound (A)
- FAS9E C 4 F 9 —C 2 H 4 as the second organosilicon compound (B).
- -Si- (OC 2 H 5 ) 3 boiling point: 241 ° C., manufactured by Tokyo Chemical Industry Co., Ltd.
- Novec 7200 C 4 H 9 OC 2 H 5 , manufactured by 3M Company
- the ratio of the first organosilicon compound (A) is 0.03% by mass, and the ratio of the second organosilicon compound (B) is 0.07% by mass.
- the obtained water / oil repellent coating composition was dropped onto a Corning glass substrate EAGLE XG, and the glass substrate was rotated at 3000 rpm for 20 seconds by a MIKASA spin coater. Further, heating and drying were performed at 150 ° C. for 10 minutes to obtain a transparent film on the glass substrate.
- Example 2 A glass is formed in the same manner as in Example 1 except that the ratio of the first organosilicon compound (A) is 0.05 mass% and the ratio of the second organosilicon compound (B) is 0.05 mass%. A transparent film was obtained on the substrate.
- Example 3 A transparent film was obtained on the glass substrate in the same manner as in Example 2 except that the ratio of the first organosilicon compound (A) was 0.1% by mass.
- Example 4 A transparent film was obtained on the glass substrate in the same manner as in Example 3 except that the ratio of the second organosilicon compound (B) was 0.1% by mass.
- Example 5 Except for using FAS13E (C 6 F 13 —C 2 H 4 —Si— (OC 2 H 5 ) 3 , boiling point: 220 ° C., manufactured by Tokyo Chemical Industry Co., Ltd.) as the second organosilicon compound (B), A transparent film was obtained on the glass substrate in the same manner as in Example 1.
- FAS13E C 6 F 13 —C 2 H 4 —Si— (OC 2 H 5 ) 3 , boiling point: 220 ° C., manufactured by Tokyo Chemical Industry Co., Ltd.
- Example 6 Except for using FAS13E (C 6 F 13 —C 2 H 4 —Si— (OC 2 H 5 ) 3 , boiling point: 220 ° C., manufactured by Tokyo Chemical Industry Co., Ltd.) as the second organosilicon compound (B), A transparent film was obtained on the glass substrate in the same manner as in Example 2.
- FAS13E C 6 F 13 —C 2 H 4 —Si— (OC 2 H 5 ) 3 , boiling point: 220 ° C., manufactured by Tokyo Chemical Industry Co., Ltd.
- Comparative Example 1 A transparent film was obtained on the glass substrate in the same manner as in Example 1 except that the second organosilicon compound (B) was not used.
- Comparative Example 2 A transparent film was obtained on the glass substrate in the same manner as in Example 2 except that the second organosilicon compound (B) was not used.
- Comparative Example 3 Example 1 except that FAS9M (C 4 F 9 —C 2 H 4 —Si— (OCH 3 ) 3 , boiling point: 43 ° C., manufactured by Tokyo Chemical Industry Co., Ltd.) was used as the second organosilicon compound (B). In the same manner, a transparent film was obtained on a glass substrate.
- FAS9M C 4 F 9 —C 2 H 4 —Si— (OCH 3 ) 3 , boiling point: 43 ° C., manufactured by Tokyo Chemical Industry Co., Ltd.
- Comparative Example 4 Example 2 except that FAS9M (C 4 F 9 —C 2 H 4 —Si— (OCH 3 ) 3 , boiling point: 43 ° C., manufactured by Tokyo Chemical Industry Co., Ltd.) was used as the second organosilicon compound (B). In the same manner, a transparent film was obtained on a glass substrate.
- FAS9M C 4 F 9 —C 2 H 4 —Si— (OCH 3 ) 3 , boiling point: 43 ° C., manufactured by Tokyo Chemical Industry Co., Ltd.
- Comparative Example 5 Example 1 except that FAS17M (C 8 F 17 —C 2 H 4 —Si— (OCH 3 ) 3 , boiling point: 80 ° C., manufactured by Tokyo Chemical Industry Co., Ltd.) was used as the second organosilicon compound (B). In the same manner, a transparent film was obtained on a glass substrate.
- FAS17M C 8 F 17 —C 2 H 4 —Si— (OCH 3 ) 3 , boiling point: 80 ° C., manufactured by Tokyo Chemical Industry Co., Ltd.
- Comparative Examples 1 and 2 using only the compound (a), and the compound (a) and a compound in which a fluorocarbon-containing group and a hydrolyzable group were bonded to a silicon atom as the second organosilicon compound.
- Comparative Examples 3 to 7 using a compound having a boiling point of less than 100 ° C. (specifically, FAS9M or FAS17M), the abrasion resistance was insufficient.
- Comparative Examples 8 and 9 using only the FAS9M or FAS9E without using the compound (a) water repellency and wear resistance were insufficient.
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Abstract
Description
また、前記第2の有機ケイ素化合物(B)の分子長が、前記第1の有機ケイ素化合物(A)の分子長よりも短いことが好ましい。より具体的には、前記第2の有機ケイ素化合物中の、アルキル基、含フッ素アルキル基、またはフッ化炭素含有基のうち最長の直鎖部が、前記第1の有機ケイ素化合物(A)の含フッ素基の最長の直鎖部よりも、原子の数で数えて短いことが好ましい。
Rf1はそれぞれ独立してフッ素原子または1個以上のフッ素原子に置換された炭素数1~20のアルキル基を表し、
R1はそれぞれ独立して、水素原子または低級アルキル基を表し、
R2はそれぞれ独立して、炭素数1~20のアルキル基を表し、
Aはそれぞれ独立して、-O-、-COO-、-OCO-、-NR-、-NRCO-、-CONR-(Rは水素原子又は、低級のアルキル基、または低級の含フッ素アルキル基を表す)を表し、
Bはそれぞれ独立して、加水分解性基を表し、
Xはそれぞれ独立して、加水分解性基又は低級のアルキル基又は低級の含フッ素アルキル基を表し、
a1、b1、c1、d1、e1、g1はそれぞれ独立して0以上100以下の整数であって、
a1、b1、c1、d1、e1を付して括弧でくくられた各繰り返し単位の順序は式中において任意であり、
a1、b1、c1、d1、e1の合計値は100以下であり、
mは1以上3以下の整数であり、
少なくとも1つのXは、加水分解性基を表す。
ケイ素原子に結合する含フッ素基の数は、1つ以上であればよく、2または3であってもよいが、1または2であるのが好ましく、1であるのが特に好ましい。
ケイ素原子に結合する含フッ素基と加水分解性基との合計数は、通常4であるが、2または3(特に3)であってもよい。3以下の場合、残りの結合手には、例えば、アルキル基(特に炭素数が1~4のアルキル基)、H、NCOなどが結合できる。
Rfはフッ素原子または1個以上のフッ素原子に置換された炭素数1~20のアルキル基を表す。Rfは好ましくは1個以上のフッ素原子で置換された炭素数1~10のアルキル基であり、より好ましくは炭素数1~10のパーフルオロアルキル基であり、さらに好ましくは炭素数1~5のパーフルオロアルキル基である。
Rf2はそれぞれ独立して、フッ素原子または1個以上のフッ素原子に置換された炭素数1~20のアルキル基を表す。Rf2は好ましくはそれぞれ独立して、フッ素原子、または炭素数1~2の含フッ素アルキル基であり、より好ましくはすべてフッ素原子である。R3はそれぞれ独立して水素原子または低級アルキル基を表す。R3はそれぞれ独立して、好ましくは水素原子、または炭素数1もしくは2のアルキル基であり、より好ましくはすべて水素原子である。
R4はそれぞれ独立して、炭素数1~20のアルキル基を表す。R4は炭素数1~5のアルキル基が好ましい。
Dはそれぞれ独立して、-O-、-COO-、-OCO-、-NR-、-NRCO-、-CONR-を表し(Rは水素原子又は低級のアルキル基又は低級の含フッ素アルキル基)を表す。Dは好ましくはそれぞれ独立して、-COO-、-O-、-OCO-であり、より好ましくはすべて-O-である。
Eはそれぞれ独立して、加水分解性基を表す。Eは、炭素数1~4のアルコキシ基、アリル基、ハロゲン原子が好ましく、特にメトキシ基、エトキシ基、アリル基、塩素原子が好ましい。
a2、b2、c2、d2、e2はそれぞれ独立して0以上600以下の整数であって、a2、b2、c2、d2、e2の合計値は13以上である。好ましくはa2、c2、d2はそれぞれ独立してb2の1/2以下であり、より好ましくは1/4以下であり、さらに好ましくはc2またはd2は0であり、特に好ましくはc2およびd2は0である。
e2は好ましくはa2、b2、c2、d2の合計値の1/5以上であり、a2、b2、c2、d2の合計値以下である。
b2は、20以上、600以下が好ましく、より好ましくは20以上、200以下であり、更に好ましくは50以上、200以下である。
e2は、4以上、600以下が好ましく、より好ましくは4以上、200以下であり、更に好ましくは10以上、200以下である。
a2、b2、c2、d2、e2の合計値は、20以上、600以下が好ましく、20以上、200以下がより好ましく、50以上、200以下が更に好ましい。
a2、b2、c2、d2、e2を付して括弧でくくられた各繰り返し単位の順序は式中において任意であるが、好ましくは最も固定端側(含フッ素基のケイ素原子と結合する側)のb2を付して括弧でくくられた繰り返し単位は、最も自由端側のa2を付して括弧でくくられた繰り返し単位よりも自由端側に位置し、より好ましくは最も固定端側のb2またはd2を付して括弧でくくられた繰り返し単位は、最も自由端側のa2またはc2を付して括弧でくくられた繰り返し単位よりも自由端側に位置する。
nは1以上3以下の整数である。nは2以上3以下が好ましく、より好ましくは3である。
Rfはフッ素原子または1個以上のフッ素原子に置換された炭素数1~20のアルキル基を表す。Rfは好ましくは1個以上のフッ素原子で置換された炭素数1~10のアルキル基であり、より好ましくは炭素数1~10のパーフルオロアルキル基であり、さらに好ましくは炭素数1~5のパーフルオロアルキル基である。
Rf3はそれぞれ独立して、フッ素原子または1個以上のフッ素原子に置換された炭素数1~20のアルキル基を表す。Rf3は好ましくはそれぞれ独立して、フッ素原子、または炭素数1~2の含フッ素アルキル基であり、より好ましくはすべてフッ素原子である。
R5はそれぞれ独立して水素原子または低級アルキル基を表す。R5は好ましくはそれぞれ独立して、水素原子、または炭素数1もしくは2のアルキル基であり、より好ましくはすべて水素原子である。
R6はそれぞれ独立して、炭素数1~20のアルキル基を表す。R6は、炭素数1~5のアルキル基が好ましい。
Gはそれぞれ独立して、-O-、-COO-、-OCO-、-NR-、-NRCO-、-CONR-を表す(Rは水素原子又は低級のアルキル基又は低級の含フッ素アルキル基)。Gは好ましくはそれぞれ独立して、-COO-、-O-、-OCO-であり、より好ましくはすべて-O-である。
Jはそれぞれ独立して、加水分解性基を表す。Jは、アルコキシ基、アリル基、及びハロゲン原子が好ましく、特にメトキシ基、エトキシ基、アリル基、塩素原子が好ましい。
Yはそれぞれ独立して、水素原子または低級アルキル基を表す。Yは好ましくはそれぞれ独立して、水素原子または炭素数1もしくは2のアルキル基であり、より好ましくはすべて水素原子である。
Zはそれぞれ独立して、水素原子またはハロゲン原子を表す。Zは、好ましくは水素原子である。
a3、b3、c3、d3、e3はそれぞれ独立して0以上600以下の整数であり、a3、b3、c3、d3、e3の合計値は13以上である。好ましくはa3、c3、d3はそれぞれ独立してb3の1/2以下であり、より好ましくは1/4以下であり、さらに好ましくはc3またはd3は0であり、特に好ましくはc3およびd3は0である。
e3は、好ましくはa3、b3、c3、d3の合計値の1/5以上であり、a3、b3、c3、d3の合計値以下である。
b3は、20以上、600以下が好ましく、より好ましくは20以上、200以下であり、更に好ましくは50以上、200以下である。e3は4以上、600以下が好ましく、より好ましくは4以上、200以下であり、更に好ましくは10以上、200以下である。a3、b3、c3、d3、e3の合計値は、20以上、600以下が好ましく、20以上、200以下が好ましく、50以上、200以下が更に好ましい。
h3は0以上2以下の整数であり、好ましくは0以上、1以下であり、
qは1以上10以下の整数であり、好ましくは1以上、8以下である。
a3、b3、c3、d3、e3を付して括弧でくくられた各繰り返し単位の順序は式中において任意であるが、好ましくは最も固定端側(含フッ素基のケイ素原子と結合する側)のb3を付して括弧でくくられた繰り返し単位は、最も自由端側のa3を付して括弧でくくられた繰り返し単位よりも自由端側に位置し、より好ましくは最も固定端側のb3またはd3を付して括弧でくくられた繰り返し単位は、最も自由端側のa3またはc3を付して括弧でくくられた繰り返し単位よりも自由端側に位置する。
pは1以上3以下の整数であり、2以上3以下が好ましく、3がより好ましい。
なお、上記式(3)、(4)中の低級とは、炭素数が1~4であることを意味する。
フルオロアルキル基としては、例えば、フルオロメチル基、フルオロエチル基、フルオロプロピル基、フルオロブチル基、フルオロペンチル基、フルオロヘキシル基、フルオロへプチル基、フルオロオクチル基、フルオロノニル基、フルオロデシル基、フルオロウンデシル基、フルオロドデシル基などの炭素数が1~12のフルオロアルキル基が挙げられる。
フルオロアルコキシアルキレン基としては、例えばフルオロメトキシC5-20アルキレン基、フルオロエトキシC5-20アルキレン基、フルオロプロポキシC5-20アルキレン基、フルオロブトキシC5-20アルキレン基などが挙げられる。
フルオロアルキルシリルアルキレン基としては、例えばフルオロメチルシリルC5-20アルキレン基、フルオロエチルシリルC5-20アルキレン基、フルオロプロピルシリルC5-20アルキレン基、フルオロブチルシリルC5-20アルキレン基、フルオロペンチルシリルC5-20アルキレン基、フルオロヘキシルシリルC5-20アルキレン基、フルオロへプチルシリルC5-20アルキレン基、フルオロオクチルシリルC5-20アルキレン基などが挙げられる。
フルオロアルキルカルボニルオキシアルキレン基としては、フルオロメチルカルボニルオキシC5-20アルキレン基、フルオロエチルカルボニルオキシC5-20アルキレン基、フルオロプロピルカルボニルオキシC5-20アルキレン基、フルオロブチルカルボニルオキシC5-20アルキレン基などが挙げられる。
フルオロアルキルアリーレン基としては、フルオロC1-8アルキルフェニレン基、フルオロC1-8アルキルナフチレン基が挙げられ、フルオロアルキルアルケニレン基としては、フルオロC1-17アルキルビニレン基が挙げられ、フルオロアルキルアルキニレン基としては、フルオロC1-17アルキルエチニレン基が挙げられる。
Rf1はそれぞれ独立して、フッ素原子または1個以上のフッ素原子に置換された炭素数1~20のアルキル基を表し、
R1はそれぞれ独立して、水素原子または低級アルキル基を表し、
R2はそれぞれ独立して、炭素数1~20のアルキル基を表し、
Aはそれぞれ独立して、-O-、-COO-、-OCO-、-NR-、-NRCO-、-CONR-を表し(Rは水素原子又は低級のアルキル基、または低級の含フッ素アルキル基)を表し、
Bはそれぞれ独立して、加水分解性基を表し、
a1、b1、c1、d1、e1はそれぞれ独立して0以上100以下の整数であって、
a1、b1、c1、d1、e1を付して括弧でくくられた各繰り返し単位の順序は式中において任意であり、
a1、b1、c1、d1、e1の合計値は100以下であり、
mは1以上3以下の整数である。
上記式(1)中、低級とは、炭素数が1~4であることを意味する。
更に、CF3(CF2)p-(CH2)qSiCH3Cl2、CF3(CF2)p-(CH2)qSiCH3(OCH3)2、CF3(CF2)p-(CH2)qSiCH3(OC2H5)2が挙げられる(pはいずれも2~10であり、好ましくは3~7でありqはいずれも1~5であり、好ましくは2~4である)。
Xはそれぞれ独立して、加水分解性基、低級のアルキル基、または低級の含フッ素アルキル基を表し、
g1は0以上100以下の整数である。
式(2)において、低級とは、炭素数が1~4であることを意味する。
例えば、上記第1の有機ケイ素化合物(A)と、上記第2の有機ケイ素化合物(B)とを、溶剤(C)で希釈した皮膜形成用溶液を室温で所定時間撹拌し、該溶液を基板に製膜した後、室温・空気中で静置し、さらに50~300℃、好ましくは100~200℃で加温乾燥することによって本発明の透明皮膜を得ることができる。
基板には予め易接着処理を施しておいてもよい。易接着処理としては、コロナ処理、プラズマ処理、紫外線処理等の親水化処理が挙げられる。また、樹脂、シランカップリング剤、テトラアルコキシシラン等によるプライマー処理を用いてもよい。
Si(X2)4 ・・・(5)
(ただし、式(5)中、X2はそれぞれ独立して、ハロゲン原子、アルコキシ基またはイソシアネート基を示す。)
(X3)3Si-(CH2)p-Si(X3)3 ・・・(6)
(ただし、式(6)中、X3はそれぞれ独立して加水分解性基または水酸基を示し、pは1~8の整数である。)
式(6)で表される化合物は、2価有機基を挟んで両末端に加水分解性シリル基またはシラノール基を有する化合物である。
第1の有機ケイ素化合物(A)として上記式(a)で表される化合物(以下、化合物(a))、第2の有機ケイ素化合物(B)としてFAS9E(C4F9-C2H4-Si-(OC2H5)3、沸点:241℃、東京化成工業社製)、溶剤(C)としてノベック7200(C4H9OC2H5、3M社製)を混合し、室温で所定の時間撹拌して、撥水撥油コーティング組成物を得た。該撥水撥油コーティング組成物中、第1の有機ケイ素化合物(A)の比率は0.03質量%であり、第2の有機ケイ素化合物(B)の比率は0.07質量%である。得られた撥水撥油コーティング組成物を、Corning製のガラス基板EAGLE XGの上に滴下し、MIKASA製スピンコーターにより該ガラス基板を3000rpmで20秒回転させた。さらに150℃で10分間加温乾燥を行い、ガラス基板上に透明皮膜を得た。
第1の有機ケイ素化合物(A)の比率を0.05質量%、第2の有機ケイ素化合物(B)の比率を0.05質量%としたこと以外は、実施例1と同様にして、ガラス基板上に透明皮膜を得た。
第1の有機ケイ素化合物(A)の比率を0.1質量%としたこと以外は、実施例2と同様にして、ガラス基板上に透明皮膜を得た。
第2の有機ケイ素化合物(B)の比率を0.1質量%としたこと以外は、実施例3と同様にして、ガラス基板上に透明皮膜を得た。
第2の有機ケイ素化合物(B)としてFAS13E(C6F13-C2H4-Si-(OC2H5)3、沸点:220℃、東京化成工業社製)を使用したこと以外は、実施例1と同様にして、ガラス基板上に透明皮膜を得た。
第2の有機ケイ素化合物(B)としてFAS13E(C6F13-C2H4-Si-(OC2H5)3、沸点:220℃、東京化成工業社製)を使用したこと以外は、実施例2と同様にして、ガラス基板上に透明皮膜を得た。
第2の有機ケイ素化合物(B)を使用しなかったこと以外は、実施例1と同様にして、ガラス基板上に透明皮膜を得た。
第2の有機ケイ素化合物(B)を使用しなかったこと以外は、実施例2と同様にして、ガラス基板上に透明皮膜を得た。
第2の有機ケイ素化合物(B)としてFAS9M(C4F9-C2H4-Si-(OCH3)3、沸点:43℃、東京化成社製)を使用したこと以外は、実施例1と同様にして、ガラス基板上に透明皮膜を得た。
第2の有機ケイ素化合物(B)としてFAS9M(C4F9-C2H4-Si-(OCH3)3、沸点:43℃、東京化成社製)を使用したこと以外は、実施例2と同様にして、ガラス基板上に透明皮膜を得た。
第2の有機ケイ素化合物(B)としてFAS17M(C8F17-C2H4-Si-(OCH3)3、沸点:80℃、東京化成社製)を使用したこと以外は、実施例1と同様にして、ガラス基板上に透明皮膜を得た。
第2の有機ケイ素化合物(B)としてFAS17M(C8F17-C2H4-Si-(OCH3)3、沸点:80℃、東京化成社製)を使用したこと以外は、実施例2と同様にして、ガラス基板上に透明皮膜を得た。
第2の有機ケイ素化合物(B)としてFAS17M(C8F17-C2H4-Si-(OCH3)3、沸点:80℃、東京化成社製)およびテトラメトキシシラン(Si-(OCH3)4、沸点:122℃、東京化成社製)を使用し、触媒としてジブチル錫オキシドを使用し、FAS17Mの比率を0.19質量%、テトラエトキシシランの比率を0.05質量%、ジブチル錫オキシドの比率を0.004質量%とし、溶剤(C)としてペンタフルオロブタン(CF3CH2CF2CH3、東京化成工業(株)社製)とAK225(旭硝子(株)社製)を重量比で7:3で用いたこと以外は、実施例2と同様にして、ガラス基板上に透明皮膜を得た。
第1の有機ケイ素化合物(A)を使用せず、第2の有機ケイ素化合物(B)としてFAS9M(C4F9-C2H4-Si-(OCH3)3、沸点:43℃、東京化成社製)を使用し、FAS9Mの比率を0.1質量%としたこと以外は、実施例1と同様にして、ガラス基板上に透明皮膜を得た。
第1の有機ケイ素化合物(A)を用いず、第2の有機ケイ素化合物(B)としてFAS9E(C4F9-C2H4-Si-(OC2H5)3、沸点:241℃、東京化成社製)を用い、FAS9Mの比率を0.1質量%としたこと以外は、実施例1と同様にして、ガラス基板上に透明皮膜を得た。
協和界面科学社製DM700を使用し、水滴量3μlで、θ/2法にて接触角の測定を行った。
モノワンダストキャッチ(トンボ鉛筆社)を具備したスチールウール試験機(大栄精機社製)により、消しゴムがサンプルに接した状態で、荷重500gをかけて摩耗試験を行い、初期接触角から-15度以下となるまでの回数を測定した。
Claims (11)
- パーフルオロアルキル基またはパーフルオロポリエーテル基を自由端側に有する含フッ素基と、加水分解性基とがケイ素原子に結合している第1の有機ケイ素化合物(A)と、
加水分解性シランオリゴマー、或いはフッ化炭素含有基と加水分解性基とがケイ素原子に結合した化合物であって、温度100℃での蒸気圧が1気圧以下である第2の有機ケイ素化合物(B)とを含む撥水撥油コーティング組成物。 - 前記第1の有機ケイ素化合物(A)の含フッ素基が炭化水素基を含む請求項1に記載の撥水撥油コーティング組成物。
- 前記第2の有機ケイ素化合物(B)の分子長が、前記第1の有機ケイ素化合物(A)の分子長よりも短い請求項1または2に記載の撥水撥油コーティング組成物。
- 前記第2の有機ケイ素化合物(B)がアルキル基又は含フッ素アルキル基を有する加水分解性シランオリゴマーであって、そのアルキル基又は含フッ素アルキル基が、第1の有機ケイ素化合物(A)の含フッ素基の最長の直鎖部よりも、原子の数で数えて短い請求項3に記載の撥水撥油コーティング組成物。
- 前記第2の有機ケイ素化合物(B)がフッ化炭素含有基と加水分解性基とがケイ素原子に結合した化合物であって、そのフッ化炭素含有基の最長の直鎖部が、前記第1の有機ケイ素化合物(A)の含フッ素基の最長の直鎖部よりも、原子の数で数えて短い請求項3に記載の撥水撥油コーティング組成物。
- 前記第2の有機ケイ素化合物(B)は、下記式(1)又は(2)で表される請求項1~5のいずれかに記載の撥水撥油コーティング組成物。
上記式(1)、(2)中、
Rf1はそれぞれ独立して、フッ素原子または1個以上のフッ素原子に置換された炭素数1~20のアルキル基を表し、
R1はそれぞれ独立して、水素原子または低級アルキル基を表し、
R2はそれぞれ独立して、炭素数1~20のアルキル基を表し、
Aはそれぞれ独立して、-O-、-COO-、-OCO-、-NR-、-NRCO-、-CONR-を表し(Rは水素原子、低級のアルキル基、または低級の含フッ素アルキル基を表す)、
Bはそれぞれ独立して、加水分解性基を表し、
Xはそれぞれ独立して、加水分解性基、低級のアルキル基、または低級の含フッ素アルキル基を表し、
a1、b1、c1、d1、e1、g1はそれぞれ独立して0以上100以下の整数であって、
a1、b1、c1、d1、e1を付して括弧でくくられた各繰り返し単位の順序は式中において任意であり、
a1、b1、c1、d1、e1の合計値は100以下であり、
mは1以上3以下の整数であり、
少なくとも1つのXは、加水分解性基を表す。 - 前記第1の有機ケイ素化合物(A)に対する、前記第2の有機ケイ素化合物(B)の質量比が、0.1~50である請求項1~6のいずれかに記載の撥水撥油コーティング組成物。
- 溶剤(C)を含む請求項1~7のいずれかに記載の撥水撥油コーティング組成物。
- 第1の有機ケイ素化合物(A)と第2の有機ケイ素化合物(B)と溶剤(C)との合計量に対して、第1の有機ケイ素化合物(A)と第2の有機ケイ素化合物(B)の合計量が0.001~20質量%である請求項8に記載の撥水撥油コーティング組成物。
- 前記溶剤(C)がフッ素系溶剤である請求項8又は9に記載の撥水撥油コーティング組成物。
- 請求項1~10のいずれかに記載の撥水撥油コーティング組成物から得られる透明皮膜。
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