WO2023095677A1 - 液状塗料組成物、塗膜、含フッ素樹脂積層体、および、物品 - Google Patents
液状塗料組成物、塗膜、含フッ素樹脂積層体、および、物品 Download PDFInfo
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- WO2023095677A1 WO2023095677A1 PCT/JP2022/042395 JP2022042395W WO2023095677A1 WO 2023095677 A1 WO2023095677 A1 WO 2023095677A1 JP 2022042395 W JP2022042395 W JP 2022042395W WO 2023095677 A1 WO2023095677 A1 WO 2023095677A1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
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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
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/34—Heterocyclic compounds having nitrogen in the ring
- C08K5/3412—Heterocyclic compounds having nitrogen in the ring having one nitrogen atom in the ring
- C08K5/3415—Five-membered rings
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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
-
- 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
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
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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
- C08L79/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen or carbon only, not provided for in groups C08L61/00 - C08L77/00
- C08L79/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C08L79/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
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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
- C08L81/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur with or without nitrogen, oxygen or carbon only; Compositions of polysulfones; Compositions of derivatives of such polymers
- C08L81/02—Polythioethers; Polythioether-ethers
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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
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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
- C09D177/00—Coating compositions based on polyamides obtained by reactions forming a carboxylic amide link in the main chain; Coating compositions based on derivatives of such polymers
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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
- C09D181/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur, with or without nitrogen, oxygen, or carbon only; Coating compositions based on polysulfones; Coating compositions based on derivatives of such polymers
- C09D181/04—Polysulfides
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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
Definitions
- the present disclosure relates to liquid coating compositions, coating films, fluororesin laminates, and articles.
- Fluoropolymers are used in a wide range of applications, such as forming a fluororesin layer by preparing a coating composition and coating it on substrates that require corrosion resistance, non-adhesiveness, heat resistance, etc., such as pan molds and rice cookers. There is however, due to its non-adhesiveness, fluororesin has poor adhesion to substrates made of metals, ceramics, and the like. Therefore, a primer that has affinity for both the fluororesin and the substrate is applied to the substrate in advance. It's here.
- PPS polyphenylene sulfide
- Patent Document 1 discloses an amide group-containing polymer compound (A) that has an amide group or will have an amide group, an antioxidant substance (B), and a fluororesin (C).
- a liquid coating composition is disclosed in which the antioxidant substance (B) is polyarylene sulfide.
- Patent Document 2 discloses an amide group-containing polymer compound (A) that has an amide group or will have an amide group, and an antioxidant substance that can suppress oxidation of the amide group ( B), a primer layer (1) obtained from a primer composition comprising a fluororesin (C), and a fluororesin comprising a fluorinated perfluoropolymer (D) formed on the primer layer (1)
- a laminate comprising a fluororesin-containing laminate comprising layer (2) is disclosed.
- an outermost layer (P) substantially made of a melt-processable perfluoropolymer and a heat-meltable perfluoropolymer and polyarylene sulfide are laminated on the outermost layer (P).
- a fluororesin laminate including a layer (Q) is disclosed.
- An object of the present disclosure is to provide a liquid coating composition suitable as a primer for a fluororesin layer and capable of obtaining high adhesion.
- the present disclosure includes an amide group-containing polymer compound (A) that has an amide group or will have an amide group, a polyphenylene sulfide (B), and a perfluoro-based fluororesin (C).
- a liquid coating composition The amide group-containing polymer compound (A) is an amide group-containing polymer (a1) having an amide group and an aromatic ring, and/or in a baking step when forming a film of the liquid coating composition.
- the content of the polyphenylene sulfide (B) is 1 to 50% by mass of the total of the amide group-containing polymer compound (A) and the polyphenylene sulfide (B),
- the perfluoro-based fluororesin (C) contains tetrafluoroethylene in the range of 85.0 to 99.5 mol%, and has a melt flow rate (MFR) in the range of 5 to 30 (g/10 min),
- the content of the perfluoro-based fluororesin (C) is 50.0 to 50.0 of the total of the amide group-containing polymer compound (A), the polyphenylene sulfide (B) and the perfluoro-based fluororesin (C). It relates to a liquid coating composition, characterized in that it is 95.0% by mass.
- the liquid coating composition described above is preferably a coating composition for undercoating a fluororesin layer containing a perfluoro-based fluororesin (D).
- the liquid coating composition described above contains particles of an amide group-containing polymer compound (A), particles of a polyphenylene sulfide (B), and particles of a perfluoro-based fluororesin (C) in a dispersion medium. It may be dispersed.
- the perfluoro-based fluororesin (C) is a copolymer containing tetrafluoroethylene and perfluoroalkyl vinyl ether, and the perfluoroalkyl vinyl ether content is preferably 0.5 to 3.0 mol %. .
- the perfluoro-based fluororesin (C) preferably has a melting point of 250 to 320°C.
- the liquid coating composition described above preferably contains less than 1% by mass of N-methyl-2-pyrrolidone.
- the present disclosure also provides a coating film characterized by being obtained from the liquid coating composition described above.
- the present disclosure comprises an object to be coated, the above-described coating film, and a fluororesin layer containing a perfluoro-based fluororesin (D), and the object to be coated, the coating film, and the fluororesin layer are laminated in this order.
- It is also a fluororesin laminate characterized in that The fluororesin layer containing the perfluoro-based fluororesin (D) preferably has a film thickness of 200 ⁇ m or more.
- the present disclosure is also an article having the fluororesin laminate described above.
- a coating film having excellent adhesion to a metal substrate can be obtained with the liquid coating composition of the present disclosure. again.
- a primer coating it is possible to form a primer layer having excellent adhesion to the fluororesin layer.
- the present disclosure includes an amide group-containing polymer compound (A) that has an amide group or will have an amide group, a polyphenylene sulfide (B), and a perfluoro-based fluororesin (C).
- a liquid coating composition The amide group-containing polymer compound (A) is an amide group-containing polymer (a1) having an amide group and an aromatic ring, and/or in a baking step when forming a film of the liquid coating composition.
- the content of the polyphenylene sulfide (B) is 1 to 50% by mass of the total of the amide group-containing polymer compound (A) and the polyphenylene sulfide (B),
- the perfluoro-based fluororesin (C) contains tetrafluoroethylene in the range of 85.0 to 99.5 mol% and has an MFR in the range of 5 to 30 (g/10 min),
- the content of the perfluoro-based fluororesin (C) is 50.0 to 50.0 of the total of the amide group-containing polymer compound (A), the polyphenylene sulfide (B) and the perfluoro-based fluororesin (C).
- a liquid coating composition characterized by containing 95.0% by mass.
- the liquid coating composition of the present disclosure is obtained by blending a specific amount of an amide group-containing polymer compound (A), a polyphenylene sulfide (B), and a perfluoro-based fluororesin (C) having an MFR within a specific range. It is possible to form a coating film which is excellent in adhesion to the object to be coated and also improved in adhesion to the fluororesin layer.
- the present disclosure includes an amide group-containing polymer compound (A) that has an amide group or will have an amide group, and a polyphenylene sulfide (B) that can suppress oxidation of the amide group. It consists of
- the liquid coating composition of the present disclosure provides a coating film by applying it to an object to be coated.
- the term "coating” means a series of steps of applying to an object to be coated such as an object to be coated, drying if necessary, and then baking.
- the baking is heating at a temperature equal to or higher than the melting point of the main polymer component in the liquid coating composition of the present disclosure.
- the heating temperature varies depending on the melting points of the amide group-containing polymer compound (A), the polyphenylene sulfide (B), and the perfluoro-based fluororesin (C) described later.
- the amide group-containing polymer compound (A) is an amide group-containing polymer (a1) having an amide group and an aromatic ring, and/or the amide group-containing polymer (a1) having the amide group-containing polymer (a1), and/or the amide group-containing polymer (a1) having the amide group-containing polymer (a1) having an amide group and an aromatic ring, and/or It is an amide group-containing polymer precursor (a2) that changes to the group-containing polymer (a1).
- the amide group-containing polymer (a1) is preferably polyamideimide (PAI), polyamide and/or polyamic acid (polyamic acid).
- the above PAI is a polycondensate having an amide group, an aromatic ring and an imide group.
- the PAI is not particularly limited, and for example, in addition to the conventionally known PAI, polyimide (PI) oxidized to introduce an amide group can be used.
- the polyamide is not particularly limited, and examples thereof include aliphatic polyamides such as nylon 6, nylon 66, nylon 11 and nylon 12; aromatic polyamides such as polyparaphenylene terephthalamide and polymetaphenylene isophthalamide.
- the polyamic acid is a polycondensate having an amide group and a carboxyl group or a carboxyl group derivative.
- the above-mentioned polyamic acid is not particularly limited, and polyamic acid having a molecular weight of several thousand to several ten thousands.
- the amide group-containing polymer precursor (a2) is converted to the amide group-containing polymer (a1) by baking when the liquid coating composition of the present disclosure is applied.
- the above “baking when applying the liquid paint composition” is when the liquid paint composition of the present disclosure is used as a primer composition described later and then a topcoat is applied, (1) After applying this primer composition, “baking” which is usually performed before applying the topcoat, (2) After the baking in (1) above, “baking” when applying the topcoat, or (3) Corresponds to “baking” when applying the top coat without baking the above (1), When using the liquid coating composition of the present disclosure in the one-coat method described later, (4) It corresponds to "baking" after applying the liquid coating composition, but this concept can include any of the bakings of (1) to (4).
- the amide group-containing polymer precursor (a2) changes to the amide group-containing polymer (a1) by baking when the liquid coating composition is applied. Since the aromatic ring of the containing polymer (a1) does not usually change, it has an aromatic ring, but before the liquid coating composition of the present disclosure is applied and baking is started, it does not have an amide group. It is not In the present specification, the polymer compound having an amide group and an aromatic ring before applying the liquid coating composition and starting baking is the above-mentioned amide group-containing polymer (a1 ).
- the amide group-containing polymer precursor (a2) is not particularly limited as long as it changes to the amide group-containing polymer (a1) by applying and baking the liquid coating composition of the present disclosure. etc.
- the above PI can be oxidized to introduce an amide group into the main chain when the liquid coating composition of the present disclosure is applied and baked at a high temperature for a long time.
- the amide group-containing polymer (a1) obtained by introducing an amide group into the above PI is PAI or polyamic acid, and in order to be PAI, all the imide groups in the main chain of PI were converted to amide groups.
- Polyamic acid is obtained by converting all imide groups in the main chain of PI into amide groups and carboxyl groups.
- the method for introducing an amide group into the PI is not particularly limited, and examples thereof include a method of ring-opening the imide group (imide ring) of PI by oxidation, and hydrolysis by reacting the imide group (imide ring) of PI with an alkali. methods and the like.
- a site on the molecular structure into which an amide group is to be introduced for example, an imide group that changes to an amide group by oxidation as described above is sometimes referred to as an amide group introduction site.
- the amide group-containing polymer compound (A) has or will have an amide group.
- the above-mentioned "having an amide group” means that the amide group-containing polymer compound (A ) does not necessarily have an amide group, but it means that the amide group is introduced before the baking is completed by causing a chemical change due to baking when applying the above-mentioned liquid coating composition.
- the above-mentioned "having or will have an amide group” means that the amide group-containing polymer compound (A) is blended in order to prepare the liquid coating composition of the present disclosure. At this point, it includes any of those having an amide group but no amide group introduction site, those having no amide group but having an amide group introduction site, and those having an amide group and having an amide group introduction site. It is a concept to get. That is, the liquid coating composition of the present disclosure may contain both the amide group-containing polymer (a1) and the amide group-containing polymer precursor (a2) described above, or may contain only one of them. may be
- the polyphenylene sulfide (B) is capable of suppressing oxidation of the amide group. It is believed that the polyphenylene sulfide (B) is self-oxidized preferentially to the oxidation of the amide group, thereby delaying the oxidation of the amide group.
- the content of the polyphenylene sulfide (B) is 1 to 50% by mass of the total of the amide group-containing polymer compound (A) and the polyphenylene sulfide (B). If it exceeds 50% by mass, the adhesive strength after hot water treatment tends to decrease, and if it is less than 1% by mass, the adhesive strength after heat treatment tends to decrease.
- the liquid coating composition of the present disclosure comprises the amide group-containing polymer compound (A), the polyphenylene sulfide (B), and the perfluoro-based fluororesin (C).
- the first layer (surface layer) mainly composed of the perfluoro-based fluororesin (C), the amide group-containing polymer compound (A) and the polyphenylene A coating film divided into a two-layer structure of a second layer containing sulfide (B) as a main component can be formed.
- the liquid coating composition of the present disclosure containing the perfluoro-based fluororesin (C) is laminated on the first layer with a fluororesin layer made of the perfluoro-based fluororesin (D), in the first layer
- a fluororesin layer made of the perfluoro-based fluororesin (D)
- the compatibility between the perfluoro-based fluororesin (C) and the perfluoro-based fluororesin (D) makes it possible to form a coating film with excellent adhesiveness to the fluororesin layer.
- the coating film divided into the two-layer structure is referred to as “divided into the two-layer structure” for convenience, but in practice, the closer to the object to be coated, the more the amide group-containing polymer compound (A) and the polyphenylene sulfide
- concentration of (B) is high, and the concentration of perfluoro-based fluororesin (C) increases in place of polyphenylene sulfide (B) as it moves away from the object to be coated, and the outermost surface of the coating film is the perfluoro-based fluororesin (C ) are thought to be present at high concentrations.
- the coating film may be formed between the layer composed of the perfluoro-based fluororesin (C) and the layer composed of the amide group-containing polymer compound (A) and the polyphenylene sulfide (B).
- a layer which can be called an intermediate layer consisting of the amide group-containing polymer compound (A) and the perfluoro-based fluororesin (C) is present.
- the perfluoro-based fluororesin (C) preferably has a baking temperature of 300° C. or higher during coating.
- the baking temperature at the time of coating is generally a temperature equal to or higher than the melting point of the perfluoro-based fluororesin (C).
- the baking at the time of coating may be the same as the "baking at the time of coating the coating composition" described above for the amide group-containing polymer precursor (a2).
- the liquid coating composition of the present disclosure does not easily deteriorate in adhesion to the object to be coated even after being baked for a long time of several tens of hours at a temperature of 300° C. or higher. Conventionally, such excellent heat-resistant adhesion could be achieved only by using a chromium-based primer, but the liquid coating composition of the present disclosure is excellent even without using chromium or chromium compounds. It is possible to achieve heat-resistant adhesion.
- the perfluoro-based fluororesin (C) is composed of a polymer obtained by polymerizing a fluorine-containing monomer. More preferably, the perfluoro-based fluororesin (C) has a melting point lower than the baking temperature during coating and has heat resistance at the baking temperature. The above perfluoro-based fluororesin (C) is preferable in that it has both corrosion resistance and heat resistance.
- the perfluoro-based fluororesin is usually a resin that requires a baking temperature of 300° C. or higher, and is a perfluoro-based resin obtained by polymerizing perfluoroolefin, perfluorovinyl ether and/or a trace comonomer. It consists of a polymer.
- the perfluoroolefin is not particularly limited, and examples thereof include tetrafluoroethylene (TFE), hexafluoropropylene (HFP), and the like.
- the perfluorovinyl ether is not particularly limited, and examples thereof include perfluoroalkyl vinyl ethers such as perfluoro(methyl vinyl ether), perfluoro(ethyl vinyl ether), and perfluoro(propyl vinyl ether).
- the minor comonomer one or more of fluorine-containing monomers that are neither perfluoroolefins nor perfluorovinyl ethers and/or non-fluorine-containing monomers can be used.
- the repeating unit derived from the minor comonomer in the molecular chain of the perfluoropolymer is preferably less than 10 mol % of the total monomer units of the perfluoropolymer.
- the perfluoro-based fluororesin (C) contains tetrafluoroethylene in the range of 85.0 to 99.5 mol%. Furthermore, the perfluoro-based fluororesin (C) is preferably a copolymer containing tetrafluoroethylene and perfluoroalkyl vinyl ether and/or hexafluoropropylene. Among them, a copolymer containing tetrafluoroethylene and perfluoroalkyl vinyl ether is preferable, and the perfluoroalkyl vinyl ether content is preferably 0.5 to 3.0 mol %. Such a perfluoro-based fluororesin (C) is preferable from the viewpoint of improving the film-forming properties of the primer layer.
- the perfluoro-based fluororesin (C) has an MFR in the range of 5 to 30 (g/10 min).
- MFR is a value measured under conditions of a temperature of 372° C. and a load of 5.0 kg in accordance with ASTM D3307 and D2116.
- the above MFR is more preferably 15 to 30 (g/10min).
- the perfluoro-based fluororesin (C) preferably has a melting point of 250 to 320°C.
- the melting point is the temperature corresponding to the maximum value in the heat of fusion curve when the temperature is raised at a rate of 10°C/min using a differential scanning calorimeter [DSC].
- the above melting point is more preferably 260 to 310°C.
- the perfluoro-based fluororesin (C) a dispersion or powder obtained by emulsion polymerization or suspension polymerization can be used, and a fine powder obtained by pulverization can also be used.
- the average particle size is preferably 0.1 to 50 ⁇ m. If it is less than 0.1 ⁇ m, the fluororesin layer cannot be made very thick, and if it exceeds 50 ⁇ m, the smoothness of the coating film obtained by applying the liquid coating composition of the present disclosure may deteriorate.
- a more preferable upper limit of the average particle size is 10 ⁇ m.
- the lower limit of the average particle size is preferably 1 ⁇ m, the upper limit is 40 ⁇ m, and the lower limit is 5 ⁇ m.
- the average particle size is a value measured by a laser measurement method.
- the content of the perfluoro-based fluororesin (C) is 50.0 to 50.0 of the total of the amide group-containing polymer compound (A), the polyphenylene sulfide (B) and the perfluoro-based fluororesin (C). It is 95.0% by mass. If it is less than 50.0% by mass, when the liquid coating composition is used as a primer composition described later, the coating film obtained by coating the primer composition and the fluororesin layer laminated on the coating film If it exceeds 95.0% by mass, the adhesion between the coating film and an object to be coated, which will be described later, tends to deteriorate. A more preferable lower limit is 60% by mass, and a more preferable upper limit is 85% by mass.
- the above numerical range is a value for the solid mass of the perfluoro-based fluororesin (C).
- the solid content mass of the perfluoro-based fluororesin (C) is determined by blending the perfluoro-based fluororesin (C) as a liquid such as dispersion as described above when preparing the liquid coating composition of the present disclosure.
- the value corresponds to the dry mass of the powder obtained by removing the particles of the perfluoro-based fluororesin (C) from the liquid.
- the liquid coating composition of the present disclosure may optionally contain the amide group-containing polymer compound (A), A resin other than polyphenylene sulfide (B) or perfluoro-based fluororesin (C) having heat resistance of 200° C. or higher may be blended.
- the above-mentioned other resins are not particularly limited, and examples thereof include polyethersulfone resins, polyetheretherketone resins, polyetherketone resins, and the like, and these can be used alone or in combination of two or more.
- the liquid coating composition of the present disclosure may optionally contain additives in order to improve coating workability and the properties of the coating film obtained from the liquid coating composition.
- additives are not particularly limited, and examples include leveling agents, solid lubricants, pigments, brightening agents, fillers, pigment dispersants, anti-settling agents, moisture absorbers, surface control agents, thixotropy-imparting agents, viscosity Conditioning agent, anti-gelling agent, UV absorber, light stabilizer, plasticizer, anti-color separation agent, anti-skinning agent, anti-scratch agent, anti-mold agent, antibacterial agent, anti-corrosion agent, anti-static agent, silane A coupling agent etc. are mentioned.
- the anticorrosive agent means an agent having a property of inhibiting oxidation of the object to be coated, but not inhibiting oxidation of the amide group.
- the liquid coating composition of the present disclosure is of the liquid coating type, it is preferable in that it can be applied evenly to the object to be coated.
- an amide group-containing polymer compound (A) and polyphenylene sulfide (B) are dissolved or It is preferably dispersed, and for thickening the film, particles made of an amide group-containing polymer compound (A), particles made of a polyphenylene sulfide (B), and a perfluoro-based fluororesin ( It is more preferable that the particles of C) are dispersed in a dispersion medium.
- the liquid coating composition of the present disclosure is a liquid coating type containing the above-mentioned other resins, it is usually composed of the above-mentioned other resins, although it depends on the type of the dispersion medium and the solubility of the above-mentioned other resins.
- the particles are also dispersed in the dispersion medium.
- Water or an organic medium can be used as the dispersion medium.
- a cationic surfactant, an anionic surfactant, or a nonionic surfactant can be dispersed as a dispersant.
- a surfactant is preferably used.
- a fluorosurfactant may be used in combination.
- the organic medium is not particularly limited, and examples thereof include lower alcohols such as 1-butanol and diacetone alcohol; ketones such as methyl isobutyl ketone and methyl ethyl ketone; esters such as butyl acetate; amides such as N,N-dimethylacetamide and N,N-dimethylformamide; aromatic hydrocarbons such as toluene, xylene, trimethylbenzene, methylethylbenzene, propylbenzene, and butylbenzene; The above can be used.
- As the dispersion medium a mixed solvent of water and the organic medium can also be used.
- the liquid coating composition of the present disclosure preferably does not substantially contain N-methyl-2-pyrrolidone in order to adjust the surface tension.
- substantially free means that the content of N-methyl-2-pyrrolidone is less than 1% by mass of the liquid coating composition.
- N-methyl-2-pyrrolidone has been widely used as a dispersion medium in order to increase the ability to dissolve fluororesins.
- the surface tension was too high, the wettability to the substrate was insufficient, and it was difficult to obtain good adhesion.
- a liquid coating composition that does not substantially use N-methyl-2-pyrrolidone is preferable in that better adhesion can be obtained.
- the liquid coating composition of the present disclosure is prepared by dissolving or dispersing the above-mentioned amide group-containing polymer compound (A) and polyphenylene sulfide (B) and optionally the above-mentioned other resins in the organic medium and / or water. It can be prepared by, for example, preparing a binder resin liquid material and stirring and mixing the perfluoro-based fluororesin (C) dispersion and the binder resin liquid material.
- the perfluororesin (C) dispersion is prepared by wetting the particles made of the perfluororesin (C) with the above dispersion medium, followed by dispersing agents such as nonionic surfactants and anionic surfactants.
- the stirring and mixing is preferably carried out using a pulverizing and dispersing machine such as a basket mill, dynamo mill or ball mill.
- the liquid coating composition of the present disclosure may be diluted with a poor solvent to adjust the viscosity, if desired.
- the amide group-containing polymer compound (A) when used in the form of particles, particles made of the amide group-containing polymer compound (A) and the polyphenylene sulfide (B)
- the average particle size of the particles comprising the perfluororesin (C) is preferably relatively smaller than the average particle size of the particles comprising the perfluororesin (C), and is preferably 20 ⁇ m or less. If the average particle size of the particles of the amide group-containing polymer compound (A) and the particles of the polyphenylene sulfide (B) is within the above range, the preferred lower limit is 0.01 ⁇ m, and the more preferred lower limit is 0.1 ⁇ m. can be
- the particles comprising the amide group-containing polymer compound (A), the particles comprising the polyphenylene sulfide (B), and the particles comprising the perfluoro-based fluororesin (C) are particularly dispersed in a dispersion medium.
- a dispersion in which the particles are dispersed it preferably satisfies the above average particle size conditions.
- the liquid coating composition of the present disclosure contains the perfluoro-based fluororesin (C), it is divided into a two-layer structure as described above, and a coating film having excellent adhesion to the object to be coated is usually obtained.
- a coating whose surface layer is a layer made of a fluororesin it may be coated only once by a so-called one-coat method, or the liquid coating composition of the present disclosure is used as a primer composition, and this primer A topcoat may be applied onto the coating film formed by applying the composition.
- the liquid coating composition of the present disclosure can be suitably used as a primer composition.
- the primer composition is an undercoat paint composition that is applied onto the object to be coated prior to applying the topcoat paint.
- the primer composition may be referred to as a primer.
- the above topcoat paint can impart general properties of fluororesins such as corrosion resistance and non-adhesiveness. It is preferable that it is a paint that is different.
- the coating film obtained by coating the paint comprising the perfluoro-based fluororesin (D) as the topcoat is sometimes referred to as the fluororesin layer.
- the liquid coating composition of the present disclosure is a primer composition, and the primer composition is preferably a coating composition for undercoating a fluororesin layer comprising a perfluoro-based fluororesin (D).
- the perfluoro-based fluororesin (D) will be described later.
- the liquid coating composition of the present disclosure is a chromium-free primer that does not contain hexavalent chromium and serves as a binder component.
- the peel adhesion strength after a heat resistance test of 350° C. for 20 hours is 60 N/cm or more
- the peel adhesion strength after a hot water treatment test of immersion in hot water of 90° C. or more for 24 hours is 40 N/cm or more. It is preferable to be In this specification, the peel adhesive strength is measured by using a Tensilon universal tester and peeling at a tensile speed of 50 mm / min in the direction of 90 ° against the test piece in accordance with JIS K 6854-1 (1999). power is required.
- the coating film for measurement is obtained by coating a liquid coating composition on an object to be coated.
- chromium-free primer means a primer in which hexavalent chromium does not act as a binder component. Therefore, even if the chromium-free primer contains hexavalent chromium alone or a compound containing hexavalent chromium, the hexavalent chromium alone or the compound containing hexavalent chromium does not serve as a binder component. and preferably a primer that does not contain hexavalent chromium alone or a compound having hexavalent chromium.
- the liquid coating composition of the present disclosure is a chromium-free primer containing no elemental chromium. Since the liquid coating composition of the present disclosure contains the perfluoro-based fluororesin (C), it enhances the adhesion to the object to be coated, and the perfluoro-based fluororesin contained in both the topcoat paint and the primer composition. The compatibility plays a role in enhancing the adhesion with the fluororesin layer.
- C perfluoro-based fluororesin
- the liquid coating composition of the present disclosure is a chromium-free primer, preferably a chromium-free primer containing no chromium element.
- the peel adhesion strength after a heat resistance test of 350°C for 20 hours is 60 N/cm or more, and the peel adhesion strength after a hot water treatment test of immersion in hot water of 90°C or more for 24 hours is 40 N/cm or more. (hereinafter sometimes referred to as "liquid coating composition (Z1)").
- the liquid coating composition (Z1) of the present disclosure may satisfy the above conditions, and is a liquid coating composition comprising the above-described amide group-containing polymer compound (A) and polyphenylene sulfide (B). , wherein the polyphenylene sulfide (B) is 1 to 50% by mass of the total of the amide group-containing polymer compound (A) and the polyphenylene sulfide (B) (hereinafter referred to as the liquid coating composition (Y ) does not necessarily have to be).
- the coating film for measurement has a peel adhesive strength of 60 N/cm or more after a heat resistance test at 350° C. for 20 hours.
- the liquid coating composition (Z1) of the present disclosure is excellent in heat resistance of the resulting coating film so that the peel adhesion strength after the heat resistance test is within the above range, and the coating film is excellent in heat resistance. It is possible to maintain sufficient resistance and adhesion to the object to be coated in long-term use in.
- a preferred lower limit of the peel adhesive strength after the heat resistance test is 65 N/cm, and a more preferred lower limit is 70 N/cm.
- the upper limit can be set to 200 N/cm, for example.
- the peel adhesive strength is measured by using a Tensilon universal tester and peeling at a tensile speed of 50 mm / min in the direction of 90 ° against the test piece in accordance with JIS K 6854-1 (1999). power is required.
- the coating film for measurement has a peel adhesive strength of 40 N/cm or more after a hot water treatment test in which the coating film is immersed in hot water at 90°C or higher for 24 hours. .
- the liquid coating composition (Z1) of the present disclosure is excellent in hot water resistance of the resulting coating film so that the peel adhesion strength after the hot water treatment test is within the above range, and the coating film is heated. Even when used in contact with water, it can maintain sufficient resistance and adhesion to the object to be coated.
- a preferable lower limit of the peel adhesive strength after the hot water treatment test is 50 N/cm, and a more preferable lower limit is 60 N/cm. As long as the peel adhesive strength is within the above range, the upper limit can be set to 200 N/cm, for example.
- the liquid coating composition (Z1) of the present disclosure provides, for the coating film for measurement, the peel adhesion strength after the heat resistance test within the above range and the peel adhesion strength after the hot water treatment test within the above range. It accomplishes both.
- the liquid coating composition (Z1) of the present disclosure is thus excellent in adhesion to the object to be coated, and the adhesion to the object to be coated is comparable to conventional chromium phosphate-based primers or It is possible to achieve even greater adhesion.
- the coating film for measurement is obtained by applying the liquid coating composition onto an object to be coated.
- PFA powder coating Average particle size: 220 ⁇ m, melt flow rate: 6 g/10 minutes
- the liquid coating composition (Z1) of the present disclosure can achieve the peel adhesion strength within the above range regardless of whether the object to be coated is a fast oxide film-forming metal or a slow oxide film forming metal.
- the above-mentioned oxide film fast-forming metal should be at least as easy to form an oxide film as stainless steel when baked during coating of the coating composition of the present disclosure, and the coating composition of the present disclosure is used as an object to be coated.
- An oxide film may already be formed at the time of coating.
- Stainless steel etc. are mentioned as said oxide film fast-forming metal.
- the slow oxide film-forming metal is a metal that forms an oxide film at a slower rate than stainless steel.
- the slow oxide film-forming metal is different from the fast oxide film-forming metal in that the degree of oxide film formation is different. Examples of the oxide film-slow-forming metal include aluminum and iron.
- the liquid coating composition (Z1) of the present disclosure is preferably a liquid coating composition comprising a heat-resistant polymer compound.
- the liquid coating composition (Z1) of the present disclosure is more preferably a liquid coating composition comprising the heat-resistant polymer compound and the polyphenylene sulfide (B) described above.
- the polyphenylene sulfide (B) is preferably 1 to 50% by mass of the total of the heat-resistant polymer compound and the polyphenylene sulfide (B).
- the heat-resistant polymer compound is preferably the amide group-containing polymer compound (A).
- the liquid coating composition (Z1) of the present disclosure is more preferably the liquid coating composition (Y) of the present disclosure.
- the liquid coating composition of the present disclosure has heat-resistant adhesion that can withstand baking at high temperatures for a long time during coating. Although the mechanism by which the liquid coating composition of the present disclosure has heat-resistant adhesion is not clear, it is considered as follows. That is, it is believed that the decrease in heat-resistant adhesion that has been observed in a primer layer made of PAI is due to the oxidative deterioration of adhesive functional groups such as amide groups possessed by PAI due to long-term high-temperature baking. .
- the liquid coating composition of the present disclosure is obtained by adding a polyphenylene sulfide (B) that suppresses oxidation of an adhesive functional group such as an amide group possessed by an amide group-containing polymer compound (A) such as PAI. It is considered that heat-resistant adhesion comparable to that of chromium-based primers could be achieved.
- the liquid coating composition of the present disclosure also increases the concentration of the perfluoro-based fluororesin (C) as it separates from the object to be coated by one coating by adding the perfluoro-based fluororesin (C).
- the adhesion between the layer containing the amide group-containing polymer compound (A) and the polyphenylene sulfide (B) as main components and the layer containing the perfluoro-based fluororesin (C) as the main component It is possible to obtain a coating film excellent in With the liquid coating composition of the present disclosure, since a layer having a perfluoro-based fluororesin (C) on the surface can be obtained in this way, the coating film made of the liquid coating composition of the present disclosure and the fluororesin layer It is thought that the heat-resistant adhesion between the layers can be improved.
- the coating film made of this liquid coating composition and the fluororesin layer It is considered that the heat-resistant adhesion can be further improved.
- the thickness of the coating film obtained from the liquid coating composition of the present disclosure is preferably 10 to 300 ⁇ m, more preferably 10 to 100 ⁇ m.
- the fluororesin laminate of the present disclosure comprises an object to be coated, a coating film, and a fluororesin layer.
- the coating film is obtained by coating the liquid coating composition of the present disclosure, and in the fluororesin laminate, the object to be coated is coated with the liquid coating composition of the present disclosure. It is obtained by In the fluororesin laminate of the present disclosure, the article to be coated, the coating film, and the fluororesin layer are laminated in this order.
- the object to be coated is an object to be coated with the liquid coating composition of the present disclosure.
- the object to be coated is not particularly limited, and examples thereof include metals such as aluminum, stainless steel [SUS], and iron; heat-resistant resins; and ceramics.
- the metal may be a single metal or an alloy, and may be a metal capable of quickly forming an oxide film, such as stainless steel, copper, or a copper alloy, in terms of good adhesion to the resulting coating film. , aluminum, iron, and other metals that form oxide films slowly.
- the oxide film-promoting metal tends to form an oxide film on the surface, and this oxide film is thought to be the cause of a decrease in adhesion to the coating film obtained by applying a conventional coating composition.
- the polyphenylene sulfide (B) is a substance capable of suppressing not only the oxidation of the amide group but also the oxidation of the object to be coated, so that the object to be coated quickly forms an oxide film. Even if it is made of a non-toxic metal, it is possible to obtain sufficient adhesion to the coating film.
- the object to be coated has to remove the resin component and roughen the surface from the viewpoint that the adhesiveness with the coating film obtained by coating from this liquid coating composition can be improved. It is preferable that it is one that has undergone a chemical treatment.
- the method for removing the resin component include a method using an organic solvent, an alkali, or the like; and a method of decomposing the resin component at a temperature of 300° C. or higher.
- the coating film can be formed on the object to be coated by applying the liquid coating composition of the present disclosure, optionally drying at 80 to 150° C. for 10 to 60 minutes, and then baking.
- the coating method it is preferable to use spray coating, coating with a roller, or the like.
- the baking depends on the melting point of the amide group-containing polymer compound (A), polyphenylene sulfide (B), and perfluoro-based fluororesin (C) in the liquid coating composition of the present disclosure. However, it is usually carried out by heating at a temperature higher than the melting point of the perfluoro-based fluororesin (C) for 10 to 60 minutes.
- the liquid coating composition of the present disclosure is used as a primer composition
- the baking may be performed before applying the topcoat, or not performed before applying the topcoat, and after applying the topcoat. It may be carried out at the same time as baking the topcoat paint.
- the fluororesin layer is formed on the coating film, and is made of a perfluoro-based fluororesin (D). Since the liquid coating composition of the present disclosure contains a perfluoro-based fluororesin (C), the surface of the coating film formed by coating the liquid coating composition on an object to be coated contains a perfluoro-based fluororesin ( C) is included in a large amount, and in the sense of improving compatibility and adhesion with the surface of the coating film, the perfluoro-based fluororesin (D) in the fluororesin layer formed on the coating film is perfluoro It is preferable to use a fluororesin having the same or similar composition as the fluororesin (C).
- the fluororesin layer contains the perfluororesin (D) and the perfluororesin (C) in that it can improve the adhesion to the coating film obtained by coating the liquid coating composition of the present disclosure.
- the terminal functional group is not particularly limited, and for example, -COOR 1 (R 1 represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, or a perfluoroalkyl group having 1 to 3 carbon atoms.), —COF, —CONH 2 , —CH 2 OH, —COOM 1 , —SO 4 M 2 , —SO 3 M 3 (M 1 , M 2 and M 3 are the same or different and are group I atoms or monovalent positive -SO 4 M 4 1/2 , -SO 3 M 5 1/2 (M 4 and M 5 are the same or different, group II atoms, transitions such as iron, etc.). represents an atomic group capable of becoming a metal or a divalent cation).
- Examples of the Group I atom include a hydrogen atom, a sodium atom, and a potassium atom, and examples of the atomic group capable of becoming a monovalent cation include an ammonium group.
- Examples of Group II atoms include calcium and magnesium.
- Examples of transition metals include iron and the like.
- the amount of terminal functional groups is preferably in the range of 50 to 100,000 per 1,000,000 carbon atoms in the polymer molecular chain of the perfluoro-based fluororesin (C). If the number is less than 50, adhesion tends to be lowered, and if it exceeds 100,000, foaming during baking becomes severe, and coating film defects tend to occur.
- a more preferable lower limit per 1,000,000 carbon atoms in the polymer molecular chain of the perfluoro-based fluororesin (C) is 100, a more preferable lower limit is 500, a more preferable upper limit is 50000, and a further preferable upper limit is , 10000.
- the amount of the terminal functional group is a value that can be measured using an infrared spectrophotometer.
- the amount of terminal functional groups in the polymer having terminal functional groups can usually be adjusted by selecting an appropriate catalyst, chain transfer agent and polymerization conditions for polymerization.
- the amount of functional groups in the polymer having terminal functional groups can be increased by polymerizing the monomers having the functional groups.
- the above (terminal ) The functional group changes part of its chemical structure under the action of reactants and heat.
- the fluororesin laminate of the present disclosure is obtained by coating the coating film obtained by coating the liquid coating composition of the present disclosure with a top coating composed of a perfluoro-based fluororesin (D), and applying the perfluoro-based fluororesin It can be obtained by firing at a temperature above the melting point of (D) for 30 to 120 minutes.
- D perfluoro-based fluororesin
- the topcoat paint containing the perfluoro-based fluororesin (D) is divided into a powder paint type and a liquid paint type depending on the desired film thickness. It is preferable to use The same dispersion medium, dispersant, additives, other resins, etc. as in the liquid coating composition of the present disclosure can be used in the top coating containing the perfluoro-based fluororesin (D).
- the fluororesin layer preferably has a film thickness of 200 ⁇ m or more.
- the liquid coating composition of the present disclosure can maintain sufficient adhesion even when the film thickness of the fluororesin layer is 200 ⁇ m or more, and is particularly useful for lining processing that requires long-term baking at high temperatures. .
- the use of the fluororesin laminate of the present disclosure is not particularly limited, and for example, it is used as a coating material for various electric wires such as heat-resistant enameled wires because it is superior in process deterioration resistance to conventional PAI enameled wires; Parts (paper separation claws, printer guides, gears, bearings), connectors, burnin sockets, IC sockets, electric parts for oil fields, relays, electromagnetic wave shields, relay cases, switches, covers, terminal board busbars, etc.
- various electric wires such as heat-resistant enameled wires because it is superior in process deterioration resistance to conventional PAI enameled wires; Parts (paper separation claws, printer guides, gears, bearings), connectors, burnin sockets, IC sockets, electric parts for oil fields, relays, electromagnetic wave shields, relay cases, switches, covers, terminal board busbars, etc.
- valve seats hydraulic seals, backup rings, piston rings, wear bands, vanes, ball bearing retainers, rollers, cams, gears, bearings, labyrinth seals, pump parts, mechanical linkages, bushings, fasteners, spline liners
- Mechanical industry related applications such as brackets, hydraulic pistons, chemical pump casings, valves, tower packings, coil bobbins, packings, connectors, gaskets, valve seals; thrust washers, seal rings, gears, bearings, tappets, engine parts (pistons, piston rings, valve steering), transmission parts (spool valves, ball check valves, sealings), rocker arms, etc.; jet engine parts (bushings, washers, spacers, nuts), power control clutches, bearings for door hinges , connectors, tube clamps, brackets, hydraulic parts, antennas, radomes, frames, fuel system parts, compressor parts, rocket engine parts, wear strips, connector shelves, aerospace industry related applications such as space structures. Other uses include can-making machine pin covers
- fluororesin laminate of the present disclosure include, in addition to the above applications, for example, stirring blades, inner surfaces of tanks, vessels, towers, centrifugal separators, pumps, valves, piping, heat exchangers, plating jigs, and inner surfaces of tank trucks.
- Corrosion-resistant applications such as screw conveyors; Semiconductor-related applications such as semiconductor factory ducts; Industrial release applications such as OA rolls, OA belts, paper manufacturing rolls, film manufacturing calendar rolls, and injection molds; rice cookers, pots, hot plates , irons, frying pans, home bakeries, pan trays, gas table tops, pan tops, pots, kettles, etc.; , casings, valves, valves, packings, coil bobbins, oil seals, joints, antenna caps, connectors, gaskets, valve seals, embedded bolts, embedded nuts, and other industrial parts related applications.
- the method for producing a molded article using the fluororesin laminate of the present disclosure is not particularly limited, and examples thereof include injection molding and the like. You can get a body.
- Applications of the molded article obtained using the fluororesin laminate of the present disclosure are not particularly limited, and include, for example, the applications described above for the fluororesin laminate of the present disclosure.
- the liquid coating composition A was obtained by dissolving and dispersing using a stirrer (manufactured by Shinto Kagaku Co., Ltd., Three One Motor).
- Alumina powder manufactured by Ujiden Chemical Industry Co., Ltd., Tosa Emery #40 was blasted at a spray pressure of 1.0 MPa on an iron plate (SS400, surface roughness Ra: 2 to 3 ⁇ m). Dry the liquid coating composition A. It was spray-coated so that the film thickness afterward would be 30 ⁇ m, and dried at 120° C. for 30 minutes. PFA powder (MFR: 6 g/10 min, average particle size: 200 ⁇ m) was placed on the obtained film so that the total film thickness after firing was 1000 ⁇ m, and fired at 350 ° C. for 60 minutes to form a fluorine-containing resin coating. A fluorine-containing resin laminate A having This fluorine-containing resin laminate A was subjected to the following evaluations.
- Heat resistance evaluation After making a 10 mm wide cut in the fluorine-containing resin coating film, heating in an electric furnace at 350 ° C. for 20 hours, returning to room temperature, using a Tensilon universal tester in accordance with JIS K 6854-1. The peel strength was measured at a tensile speed of 50 mm/min in the direction of 90° with respect to the test piece. However, when the fluorine-containing resin coating film had already peeled off after heating for 20 hours, the peel strength was set at 0 N/cm.
- Hot water evaluation A 10 mm width slit was made in the fluorine-containing resin coating film, which was then immersed in hot water at 90°C for 24 hours. However, if the fluorine-containing resin coating had already peeled off after immersion for 24 hours, the peel strength was set to 0 N/cm.
- Heat resistance evaluation and hot water resistance evaluation were carried out in the same procedure as in Example 1, except that the average particle size was 30 ⁇ m).
- Example 4 instead of PAI varnish A (3-methoxy-N,N-dimethylpropanamide solution, solid content 35%), PAI varnish B (N-methylpyrrolidone solution, solid content 30%) was used, and 3-methoxy-N, Heat resistance evaluation and hot water evaluation were performed in the same manner as in Example 1, except that N-methylpyrrolidone was used instead of N-dimethylpropanamide.
- the liquid coating composition of the present disclosure is a coating composition capable of forming a coating film having both adhesion to the object to be coated and adhesion to the fluororesin layer, and can be suitably used as a primer for the fluororesin layer. can.
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Abstract
Description
上記アミド基含有性高分子化合物(A)は、アミド基と芳香環とを有しているアミド基含有ポリマー(a1)、および/または、上記液状塗料組成物を成膜する際の焼成工程において上記アミド基含有ポリマー(a1)に変化するアミド基含有ポリマー前駆体(a2)であり、
上記ポリフェニレンサルファイド(B)の含有量は、上記アミド基含有性高分子化合物(A)とポリフェニレンサルファイド(B)との合計の1~50質量%であり、
上記パーフルオロ系フッ素樹脂(C)は、テトラフルオロエチレンを85.0~99.5モル%の範囲で含み、メルトフローレート(MFR)が5~30(g/10min)の範囲にあり、
上記パーフルオロ系フッ素樹脂(C)の含有量は、上記アミド基含有性高分子化合物(A)と上記ポリフェニレンサルファイド(B)と上記パーフルオロ系フッ素樹脂(C)との合計の50.0~95.0質量%であることを特徴とする、液状塗料組成物に関する。
上述の液状塗料組成物は、アミド基含有性高分子化合物(A)からなる粒子と、ポリフェニレンサルファイド(B)からなる粒子と、パーフルオロ系フッ素樹脂(C)からなる粒子とを、分散媒に分散してなるものであってもよい。
上記パーフルオロ系フッ素樹脂(C)は、融点が250~320℃であることが好ましい。
上述の液状塗料組成物は、N-メチルー2-ピロリドンの含有量が、組成物の1質量%未満であることが好ましい。
本開示は、被塗装物、上述の塗膜、および、パーフルオロ系フッ素樹脂(D)を含むフッ素樹脂層からなり、上記被塗装物、上記塗膜および上記フッ素樹脂層は、この順に積層していることを特徴とする含フッ素樹脂積層体でもある。
上記パーフルオロ系フッ素樹脂(D)を含むフッ素樹脂層は、膜厚が200μm以上であることが好ましい。
本開示は、上述の含フッ素樹脂積層体を有する物品でもある。
本開示は、アミド基を有しているか、または、アミド基を有することになるアミド基含有性高分子化合物(A)と、ポリフェニレンサルファイド(B)と、パーフルオロ系フッ素樹脂(C)を含む液状塗料組成物であって、
上記アミド基含有性高分子化合物(A)は、アミド基と芳香環とを有しているアミド基含有ポリマー(a1)、および/または、上記液状塗料組成物を成膜する際の焼成工程において上記アミド基含有ポリマー(a1)に変化するアミド基含有ポリマー前駆体(a2)であり、
上記ポリフェニレンサルファイド(B)の含有量は、上記アミド基含有性高分子化合物(A)とポリフェニレンサルファイド(B)との合計の1~50質量%であり、
上記パーフルオロ系フッ素樹脂(C)は、テトラフルオロエチレンを85.0~99.5モル%の範囲で含み、MFRが5~30(g/10min)の範囲にあり、
上記パーフルオロ系フッ素樹脂(C)の含有量は、上記アミド基含有性高分子化合物(A)と上記ポリフェニレンサルファイド(B)と上記パーフルオロ系フッ素樹脂(C)との合計の50.0~95.0質量%であることを特徴とする液状塗料組成物である。
本開示の液状塗料組成物は、被塗装物に塗装することにより塗膜を得るものである。本明細書において、「塗装」とは、被塗装物等の塗装対象物に塗布し、必要に応じて乾燥し、次いで焼成することよりなる一連の工程を意味する。上記焼成は、本開示の液状塗料組成物中の主要な高分子成分の融点以上の温度で加熱することである。上記加熱の温度は、上記アミド基含有性高分子化合物(A)、上記ポリフェニレンサルファイド(B)、及び、後述のパーフルオロ系フッ素樹脂(C)の各融点等によって異なる。
上記アミド基含有ポリマー(a1)は、通常、アミド基(-NH-C(=O)-)を主鎖又は側鎖に有し、芳香環を主鎖に有するポリマーである。
上記アミド基含有ポリマー(a1)は、ポリアミドイミド(PAI)、ポリアミド、及び/又は、ポリアミド酸(ポリアミック酸)であることが好ましい。
上記ポリアミド酸は、アミド基と、カルボキシル基又はカルボキシル基の誘導体とを有する重縮合体である。上記ポリアミド酸としては特に限定されず、分子量が数千~数万であるポリアミド酸等が挙げられる。
上記「液状塗料組成物を塗装する際の焼成」は、本開示の液状塗料組成物を後述のプライマー組成物として用い、次いで上塗り塗料を塗装する場合、
(1)このプライマー組成物を塗布した後、上記上塗り塗料を塗装する前に通常行う「焼成」、
(2)上記(1)の焼成の後、上記上塗り塗料を塗装する際の「焼成」、又は、
(3)上記(1)の焼成を行わずに上記上塗り塗料を塗装する際の「焼成」に該当し、
本開示の液状塗料組成物を後述のワンコート法に用いる場合、
(4)上記液状塗料組成物を塗布した後の「焼成」に該当するが、(1)~(4)の何れの焼成をも含み得る概念である。
本明細書において、上記液状塗料組成物を塗布し焼成を開始する前においてアミド基を有しており、更に芳香環をも有している高分子化合物は、上述のアミド基含有性ポリマー(a1)に該当する。
上記「アミド基を有することとなる」とは、本開示の液状塗料組成物を調製するためにアミド基含有性高分子化合物(A)を配合する時点で上記アミド基含有性高分子化合物(A)が必ずしもアミド基を有していなくともよいが、上述の液状塗料組成物を塗装する際の焼成により化学変化を起こしてこの焼成が終了する前にアミド基が導入されることを意味する。
上記ポリフェニレンサルファイド(B)は、上記アミド基の酸化に優先して自己酸化されることによって上記アミド基の酸化を遅らせることができるものと考えられる。
本開示の液状塗料組成物は、塗装することにより、パーフルオロ系フッ素樹脂(C)を主成分とする第1層(表層)、並びに、上記アミド基含有性高分子化合物(A)及び上記ポリフェニレンサルファイド(B)を主成分とする第2層の2層構造に分かれた塗膜を形成することができる。上記パーフルオロ系フッ素樹脂(C)を含む本開示の液状塗料組成物は、上記第1層上にパーフルオロ系フッ素樹脂(D)からなるフッ素樹脂層を積層する場合、上記第1層中のパーフルオロ系フッ素樹脂(C)と上記パーフルオロ系フッ素樹脂(D)との相溶性により、上記フッ素樹脂層との接着性に優れた塗膜を形成することができる。
上記塗装時の焼成の温度は、一般的に、パーフルオロ系フッ素樹脂(C)の融点以上の温度である。上記塗装時の焼成は、上記アミド基含有ポリマー前駆体(a2)について上述した「塗料組成物を塗装する際の焼成」と同じものが該当し得る。
上記パーフルオロ系フッ素樹脂(C)としては、融点が上述の塗装時における焼成の温度未満であり、かつ、上述の焼成の温度において耐熱性を有するものが更に好ましい。
上記パーフルオロ系フッ素樹脂(C)は、耐食性と耐熱性とを兼ね備えている点で好ましい。
上記パーフルオロ系フッ素樹脂は、通常、300℃以上の焼成温度が要求される樹脂であり、パーフルオロオレフィンと、パーフルオロビニルエーテル及び/又は微量共単量体とを重合して得られるパーフルオロ系重合体からなるものである。上記パーフルオロオレフィンとしては特に限定されず、例えば、テトラフルオロエチレン(TFE)、ヘキサフルオロプロピレン(HFP)等が挙げられる。上記パーフルオロビニルエーテルとしては特に限定されず、例えば、パーフルオロ(メチルビニルエーテル)、パーフルオロ(エチルビニルエーテル)、パーフルオロ(プロピルビニルエーテル)等のパーフルオロアルキルビニルエーテルが挙げられる。
このようなパーフルオロ系フッ素樹脂(C)は、プライマー層の成膜性向上の観点から好ましい。
上記MFRは、15~30(g/10min)がより好ましい。
上記融点は、260~310℃がより好ましい。
上記パーフルオロ系フッ素樹脂(C)を粉末で用いる場合の平均粒子径は、0.1~50μmであることが好ましい。0.1μm未満であると、フッ素樹脂層をあまり厚くすることができず、50μmを超えると、本開示の液状塗料組成物を塗装して得られる塗膜の平滑性が悪くなる場合がある。薄塗り等に使用する場合、平均粒子径のより好ましい上限は、10μmである。膜厚が200μmを超えるライニング等に用いる場合、平均粒子径のより好ましい下限は、1μm、より好ましい上限は、40μmであり、更に好ましい下限は、5μmである。
本明細書において、平均粒子径は、レーザー式測定法によって測定し得られる値である。
上記添加剤類としては特に限定されず、例えば、レベリング剤、固体潤滑剤、顔料、光輝材、充填材、顔料分散剤、沈降防止剤、水分吸収剤、表面調整剤、チキソトロピー性付与剤、粘度調整剤、ゲル化防止剤、紫外線吸収剤、光安定剤、可塑剤、色分かれ防止剤、皮張り防止剤、スリ傷防止剤、防カビ剤、抗菌剤、抗蝕剤、帯電防止剤、シランカップリング剤等が挙げられる。
本明細書において、上記抗蝕剤は、アミド基の酸化は抑制しないが被塗装物の酸化を抑制する性質を有するものを意味する。
上記分散媒としては、更に、水と上記有機媒体との混合溶剤も使用可能である。
上記攪拌混合は、バスケットミル、ダイナモミル、ボールミル等の粉砕分散機を用いて行うことが好ましい。
本開示の液状塗料組成物は、上記攪拌混合後、所望により貧溶媒で希釈し粘度調整を行ってもよい。
本明細書において、剥離接着強さは、テンシロン万能試験機を用い、JIS K 6854-1(1999年)に準拠して試験片に対して90°方向に引っ張り速度50mm/分で剥離するのに要する力である。
本開示の液状塗料組成物は、パーフルオロ系フッ素樹脂(C)を含むものであるため、被塗装物との密着性を高めるとともに、上記上塗り塗料及び上記プライマー組成物が共に有するパーフルオロ系フッ素樹脂の相溶性により、上記フッ素樹脂層との密着性を高める役割を果たすものである。
本開示の液状塗料組成物(Z1)は、上記測定用塗膜について、350℃に20時間おく耐熱性試験後の剥離接着強さが60N/cm以上であるものである。本開示の液状塗料組成物(Z1)は、上記耐熱性試験後の剥離接着強さが上記範囲内であるように、得られる塗膜の耐熱性に優れたものであり、塗膜の高温下における長期使用において充分な耐性と、被塗装物との密着性を保持することができる。
上記耐熱性試験後の剥離接着強さの好ましい下限は65N/cm、より好ましい下限は70N/cmである。剥離接着強さは、上記範囲内であれば上限を例えば、200N/cmとすることができる。
本明細書において、剥離接着強さは、テンシロン万能試験機を用い、JIS K 6854-1(1999年)に準拠して試験片に対して90°方向に引っ張り速度50mm/分で剥離するのに要する力である。
上記酸化膜速形成性金属は、少なくとも本開示の塗料組成物の塗装における焼成により、ステンレスと同程度に酸化膜を形成しやすいものであればよく、被塗装物として本開示の塗料組成物を塗布する時点で既に酸化膜を形成しているものであってもよい。上記酸化膜速形成性金属としては、ステンレス等が挙げられる。
本明細書において、上記酸化膜遅形成性金属は、ステンレスよりも酸化膜を形成する速度が遅い金属である。上記酸化膜遅形成性金属は、酸化膜形成性の程度が相違する点で、上述の酸化膜速形成性金属とは異なる。上記酸化膜遅形成性金属としては、例えば、アルミニウム、鉄等が挙げられる。
本開示の液状塗料組成物(Z1)は、上記耐熱性高分子化合物と、更に、上述のポリフェニレンサルファイド(B)とからなる液状塗料組成物であることがより好ましい。
上記ポリフェニレンサルファイド(B)を配合する場合、上記耐熱性高分子化合物はアミド基含有性高分子化合物(A)であることが好ましい。
本開示の液状塗料組成物は、塗装に際し、長時間の高温での焼成に耐える耐熱密着性を有するものである。本開示の液状塗料組成物が耐熱密着性を有する機構としては明確ではないが、以下のように考えられる。
即ち、従来、PAIからなるプライマー層において観測されていた耐熱密着性の低下は、PAIが持つアミド基等の接着性官能基が長時間の高温での焼成により酸化劣化したことによるものと考えられる。本開示の液状塗料組成物は、PAI等のアミド基含有性高分子化合物(A)が持つアミド基等の接着性官能基の酸化を抑制するポリフェニレンサルファイド(B)を添加することにより、リン酸クロム系プライマーに匹敵する耐熱密着性を実現できたものと考えられる。本開示の液状塗料組成物は、また、パーフルオロ系フッ素樹脂(C)を添加することによって、1回の塗装により、被塗装物から離れるにつれパーフルオロ系フッ素樹脂(C)の濃度を高くすることができるので、上記アミド基含有性高分子化合物(A)及びポリフェニレンサルファイド(B)を主成分とする層と、パーフルオロ系フッ素樹脂(C)を主成分とする層との間の密着性に優れた塗膜を得ることができる。本開示の液状塗料組成物は、また、このように表面にパーフルオロ系フッ素樹脂(C)を有する層が得られることから、本開示の液状塗料組成物からなる塗膜とフッ素樹脂層との間の耐熱密着性を向上することができるものと考えられる。本開示の液状塗料組成物は、また、パーフルオロ系フッ素樹脂(C)が後述の接着性官能基を有するものである場合、この液状塗料組成物からなる塗膜とフッ素樹脂層との間の耐熱密着性を一段と向上することができるものと考えられる。
上記被塗装物としては特に限定されず、例えば、アルミニウム、ステンレス〔SUS〕、鉄等の金属;耐熱樹脂;セラミック等からなるものが挙げられ、金属からなるものであることが好ましい。金属としては、単体金属又は合金であってよく、また、得られる塗膜との接着性が良好である点で、ステンレス、銅、銅合金等の酸化膜速形成性金属であってもよいし、アルミニウム、鉄等の酸化膜遅形成性金属であってもよい。
上記塗布の方法としては、スプレー塗布、ローラーによる塗布等を用いることが好ましい。
本開示の液状塗料組成物がパーフルオロ系フッ素樹脂(C)を含むものであるため、上記液状塗料組成物を被塗装物上に塗装し形成される塗膜の表面には、パーフルオロ系フッ素樹脂(C)が多く含まれており、上記塗膜の表面との相溶性及び接着性を高める意味で、上記塗膜上に形成するフッ素樹脂層におけるパーフルオロ系フッ素樹脂(D)としては、パーフルオロ系フッ素樹脂(C)と同一又は類似の組成を有するフッ素樹脂を用いることが好ましい。
本開示の液状塗料組成物から得られる塗膜とフッ素樹脂層との密着性は、パーフルオロ系フッ素樹脂(C)として末端官能基を有するポリマーからなる樹脂を利用することにより向上させることができる。
上記末端官能基を有するポリマーにおける末端官能基の量は、通常、適切な触媒、連鎖移動剤及び重合条件を選んで重合することにより調整することができる。
上記末端官能基を有するポリマーにおける官能基の量は、上記官能基を有するモノマーを重合することによって増やすことができる。
上記官能基を有するモノマーを単量体として重合し得られたパーフルオロ系フッ素樹脂(C)のポリマーを適宜酸、アルカリ等の反応試剤と反応させる事及び熱により処理する事により、上記(末端)官能基は反応試剤及び熱の作用により、化学構造の一部が変化する。
フッ素樹脂層は、膜厚が200μm以上であるものであることが好ましい。
本開示の液状塗料組成物は、フッ素樹脂層の膜厚が200μm以上であっても、充分な密着性を保持することができ、高温で長時間の焼成が必要なライニング加工に特に有用である。
本開示の含フッ素樹脂積層体を用いて得られる成形体の用途としては特に限定されず、例えば、本開示の含フッ素樹脂積層体について上述した用途等が挙げられる。
以下の実施例においては特に言及しない場合は、「部」「%」はそれぞれ「質量部」「質量%」を表す。
ポリアミドイミド(PAI)ワニスA(3-メトキシ-N,N-ジメチルプロパンアミド溶液、固形分35%)250g、ポリフェニレンサルファイド(PPS)樹脂粉末10g、PFA粉末A(テトラフルオロエチレン/パーフルオロプロピルビニルエーテル=98.0/2.0(モル)、MFR:20g/10min、融点:301℃、平均粒径:20μm)350gを、3-メトキシ-N,N-ジメチルプロパンアミド240g、メチルイソブチルケトン150gの混合溶剤に加え、撹拌機(新東科学社製 スリーワンモーター)を用いて溶解分散し、液状塗料組成物Aを得た。
PFA粉末Aに代えて、FEP粉末A(テトラフルオロエチレン/ヘキサフルオロプロピレン=90.0/10.0(mol)、MFR:6g/10min、融点:270℃、平均粒径:40μm)を用いたこと以外は、実施例1と同様の手順で耐熱評価と耐熱水評価を実施した。
PFA粉末Aに代えて、FEP粉末B(テトラフルオロエチレン/ヘキサフルオロプロピレン/パーフルオロプロピルビニルエーテル=88.5/10.5/1.0(モル)、MFR:20g/10min、融点:258℃、平均粒径:30μm)を用いたこと以外は、実施例1と同様の手順で耐熱評価と耐熱水評価を実施した。
PAIワニスA(3-メトキシ-N,N-ジメチルプロパンアミド溶液、固形分35%)に代えて、PAIワニスB(N-メチルピロリドン溶液、固形分30%)を用い、3-メトキシ-N,N-ジメチルプロパンアミドに代えて、N-メチルピロリドンを用いたこと以外は、実施例1と同様の手順で耐熱評価と耐熱水評価を実施した。
PFA粉末Aに代えて、PFA粉末B(テトラフルオロエチレン/パーフルオロプロピルビニルエーテル=98.5/1.5(モル)、MFR:2g/10min、融点:304℃、平均粒径:40μm)を用いたこと以外は、実施例1と同様の手順で耐熱評価と耐熱水評価を実施した。
PFA粉末Aに代えて、PFA粉末C(テトラフルオロエチレン/パーフルオロアルキルビニルエーテル=98.0/2.0(モル)、MFR:40g/10min、融点:296℃、平均粒径:30μm)を用いたこと以外は、実施例1と同様の手順で耐熱評価と耐熱水評価を実施した。
PFA粉末Aに代えて、FEP粉末C(テトラフルオロエチレン/ヘキサフルオロプロピレン=89.0/11.0(モル)、MFR:1g/10min、融点;272℃、平均粒径:40μm)を用いたこと以外は、実施例1と同様の手順で耐熱評価と耐熱水評価を実施した。
Claims (10)
- アミド基を有しているか、または、アミド基を有することになるアミド基含有性高分子化合物(A)と、ポリフェニレンサルファイド(B)と、パーフルオロ系フッ素樹脂(C)を含む液状塗料組成物であって、
前記アミド基含有性高分子化合物(A)は、アミド基と芳香環とを有しているアミド基含有ポリマー(a1)、および/または、前記液状塗料組成物を成膜する際の焼成工程において前記アミド基含有ポリマー(a1)に変化するアミド基含有ポリマー前駆体(a2)であり、
前記ポリフェニレンサルファイド(B)の含有量は、前記アミド基含有性高分子化合物(A)とポリフェニレンサルファイド(B)との合計の1~50質量%であり、
前記パーフルオロ系フッ素樹脂(C)は、テトラフルオロエチレンを85.0~99.5モル%の範囲で含み、メルトフローレート(MFR)が5~30(g/10min)の範囲にあり、
前記パーフルオロ系フッ素樹脂(C)の含有量は、前記アミド基含有性高分子化合物(A)と前記ポリフェニレンサルファイド(B)と前記パーフルオロ系フッ素樹脂(C)との合計の50.0~95.0質量%であることを特徴とする液状塗料組成物。 - パーフルオロ系フッ素樹脂(D)を含むフッ素樹脂層の下塗り用塗料組成物である、請求項1に記載の液状塗料組成物。
- アミド基含有性高分子化合物(A)からなる粒子と、ポリフェニレンサルファイド(B)からなる粒子と、パーフルオロ系フッ素樹脂(C)からなる粒子とを、分散媒に分散してなる請求項1または2に記載の液状塗料組成物。
- パーフルオロ系フッ素樹脂(C)は、テトラフルオロエチレンとパーフルオロアルキルビニルエーテルとを含む共重合体であり、パーフルオロアルキルビニルエーテルの含有量が0.5~3.0モル%である、請求項1~3のいずれかに記載の液状塗料組成物。
- パーフルオロ系フッ素樹脂(C)は、融点が250~320℃である、請求項1~4のいずれかに記載の液状塗料組成物。
- N-メチルー2-ピロリドンの含有量が、組成物の1質量%未満である、請求項1~5のいずれかに記載の液状塗料組成物。
- 請求項1~6のいずれかに記載の液状塗料組成物より得られることを特徴とする塗膜。
- 被塗装物、請求項7に記載の塗膜、および、パーフルオロ系フッ素樹脂(D)を含むフッ素樹脂層からなり、前記被塗装物、前記塗膜および前記フッ素樹脂層は、この順に積層していることを特徴とする含フッ素樹脂積層体。
- パーフルオロ系フッ素樹脂(D)を含むフッ素樹脂層は、膜厚が200μm以上である、請求項8に記載の含フッ素樹脂積層体。
- 請求項8または9記載の含フッ素樹脂積層体を有する物品。
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| CN202280078118.9A CN118302496A (zh) | 2021-11-26 | 2022-11-15 | 液态涂料组合物、涂膜、含氟树脂层积体和物品 |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2021-191911 | 2021-11-26 | ||
| JP2021191911A JP7445146B2 (ja) | 2021-11-26 | 2021-11-26 | 液状塗料組成物、塗膜、含フッ素樹脂積層体、および、物品 |
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| Publication Number | Publication Date |
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| WO2023095677A1 true WO2023095677A1 (ja) | 2023-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| PCT/JP2022/042395 Ceased WO2023095677A1 (ja) | 2021-11-26 | 2022-11-15 | 液状塗料組成物、塗膜、含フッ素樹脂積層体、および、物品 |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP7445146B2 (ja) |
| CN (1) | CN118302496A (ja) |
| TW (1) | TW202335847A (ja) |
| WO (1) | WO2023095677A1 (ja) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000239596A (ja) * | 1999-02-22 | 2000-09-05 | Sumitomo Electric Ind Ltd | フッ素樹脂被覆物及びその製造方法 |
| JP2005231080A (ja) * | 2004-02-17 | 2005-09-02 | Daikin Ind Ltd | フッ素樹脂積層体 |
| JP2013227504A (ja) * | 2012-03-26 | 2013-11-07 | Daikin Industries Ltd | 複合粒子、粉体塗料、塗膜、積層体、及び、複合粒子の製造方法 |
| CN104877556A (zh) * | 2015-06-05 | 2015-09-02 | 贵阳明通炉料有限公司 | 耐磨耐热耐腐蚀的复合涂料 |
| JP2019218484A (ja) * | 2018-06-20 | 2019-12-26 | 三井・ケマーズ フロロプロダクツ株式会社 | 水性フッ素樹脂塗料組成物 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1714129B (zh) * | 2002-11-22 | 2010-04-28 | 大金工业株式会社 | 涂料组合物、含氟层积体以及树脂组合物 |
| JP2005335186A (ja) * | 2004-05-26 | 2005-12-08 | Daikin Ind Ltd | フッ素樹脂含有積層体 |
| US10294362B2 (en) * | 2012-08-06 | 2019-05-21 | Daikin Industries, Ltd. | Resin composition and molded article |
| JP6838636B2 (ja) * | 2019-11-20 | 2021-03-03 | ダイキン工業株式会社 | 組成物及び塗膜 |
-
2021
- 2021-11-26 JP JP2021191911A patent/JP7445146B2/ja active Active
-
2022
- 2022-11-15 CN CN202280078118.9A patent/CN118302496A/zh active Pending
- 2022-11-15 WO PCT/JP2022/042395 patent/WO2023095677A1/ja not_active Ceased
- 2022-11-21 TW TW111144365A patent/TW202335847A/zh unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000239596A (ja) * | 1999-02-22 | 2000-09-05 | Sumitomo Electric Ind Ltd | フッ素樹脂被覆物及びその製造方法 |
| JP2005231080A (ja) * | 2004-02-17 | 2005-09-02 | Daikin Ind Ltd | フッ素樹脂積層体 |
| JP2013227504A (ja) * | 2012-03-26 | 2013-11-07 | Daikin Industries Ltd | 複合粒子、粉体塗料、塗膜、積層体、及び、複合粒子の製造方法 |
| CN104877556A (zh) * | 2015-06-05 | 2015-09-02 | 贵阳明通炉料有限公司 | 耐磨耐热耐腐蚀的复合涂料 |
| JP2019218484A (ja) * | 2018-06-20 | 2019-12-26 | 三井・ケマーズ フロロプロダクツ株式会社 | 水性フッ素樹脂塗料組成物 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2023078671A (ja) | 2023-06-07 |
| CN118302496A (zh) | 2024-07-05 |
| JP7445146B2 (ja) | 2024-03-07 |
| TW202335847A (zh) | 2023-09-16 |
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