WO2022172933A1 - 液状組成物、その製造方法及び凸部付き部材 - Google Patents
液状組成物、その製造方法及び凸部付き部材 Download PDFInfo
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- WO2022172933A1 WO2022172933A1 PCT/JP2022/004995 JP2022004995W WO2022172933A1 WO 2022172933 A1 WO2022172933 A1 WO 2022172933A1 JP 2022004995 W JP2022004995 W JP 2022004995W WO 2022172933 A1 WO2022172933 A1 WO 2022172933A1
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- 229920006149 polyester-amide block copolymer Polymers 0.000 description 1
- 239000003505 polymerization initiator Substances 0.000 description 1
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- 229920001451 polypropylene glycol Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 239000012286 potassium permanganate Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 229940116422 propylene glycol dicaprate Drugs 0.000 description 1
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- 238000007790 scraping Methods 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 229940014800 succinic anhydride Drugs 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
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- 239000010409 thin film Substances 0.000 description 1
- 230000009974 thixotropic effect Effects 0.000 description 1
- FRGPKMWIYVTFIQ-UHFFFAOYSA-N triethoxy(3-isocyanatopropyl)silane Chemical compound CCO[Si](OCC)(OCC)CCCN=C=O FRGPKMWIYVTFIQ-UHFFFAOYSA-N 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
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- 239000010456 wollastonite Substances 0.000 description 1
- 229910052882 wollastonite Inorganic materials 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Classifications
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- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
- B32B15/082—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin comprising vinyl resins; comprising acrylic resins
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- 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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- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/44—Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F259/00—Macromolecular compounds obtained by polymerising monomers on to polymers of halogen containing monomers as defined in group C08F14/00
- C08F259/08—Macromolecular compounds obtained by polymerising monomers on to polymers of halogen containing monomers as defined in group C08F14/00 on to polymers containing fluorine
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
- C08K3/013—Fillers, pigments or reinforcing additives
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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
- C08L101/00—Compositions of unspecified macromolecular compounds
- C08L101/02—Compositions of unspecified macromolecular compounds characterised by the presence of specified groups, e.g. terminal or pendant functional groups
- C08L101/06—Compositions of unspecified macromolecular compounds characterised by the presence of specified groups, e.g. terminal or pendant functional groups containing oxygen atoms
- C08L101/08—Carboxyl groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08L27/18—Homopolymers or copolymers or tetrafluoroethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
- C08L63/10—Epoxy resins modified by unsaturated compounds
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/027—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds
- G03F7/032—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds with binders
- G03F7/033—Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds with binders the binders being polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. vinyl polymers
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/038—Macromolecular compounds which are rendered insoluble or differentially wettable
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/03—Use of materials for the substrate
-
- 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
- B32B2457/00—Electrical equipment
- B32B2457/08—PCBs, i.e. printed circuit boards
Definitions
- the present invention relates to a liquid composition containing a tetrafluoroethylene-based polymer powder, a method for producing the same, and a base material with projections having few defects.
- Tetrafluoroethylene polymers such as polytetrafluoroethylene (PTFE) have excellent physical properties such as electrical properties, water and oil repellency, chemical resistance, and heat resistance, and are used in various industrial applications such as printed circuit boards.
- a liquid composition containing a powder of a tetrafluoroethylene-based polymer is known as a coating agent used for imparting the physical properties to the substrate surface.
- tetrafluoroethylene-based polymer powder has been blended into the insulating portion material. Extensive investigation is underway.
- Patent Document 1 proposes blending a powder of a tetrafluoroethylene-based polymer into a resist composition for forming electronic parts.
- a thermosetting resin composition used for forming a permanent protective film of a printed wiring board such as a solder resist layer, an interlayer insulating layer, and a coverlay of a flexible printed wiring board, contains a powder of a tetrafluoroethylene-based polymer. It has been proposed to combine the
- Tetrafluoroethylene-based polymers have low surface tension, do not easily interact with other components, and have extremely low dispersion stability. Therefore, when preparing a liquid composition in which the powder is dispersed, a large amount of solvent (dispersion medium) is often used from the viewpoint of suppressing an increase in viscosity and aggregation of the powder. In addition, from the viewpoint of imparting various physical properties to moldings formed from the liquid composition, it is often necessary to separately add various additives to the liquid composition. The inventors of the present invention have found that the uniformity and density of the component distribution of the polymer are lowered, and the physical properties of the tetrafluoroethylene-based polymer are difficult to exhibit.
- a liquid composition that is excellent in dispersion stability and handleability without using a large amount of dispersion medium. was found to be obtained.
- a liquid composition is not limited to moldings excellent in low dielectric loss tangent, low linear expansion, etc., but is also suitable for moldings having fine or complicated shapes and moldings of microscale or smaller. I found out.
- An object of the present invention is to provide a liquid composition, preferably a resist composition, containing a tetrafluoroethylene-based polymer powder, which has excellent dispersion stability and handling properties, a method for producing such a liquid composition, and such a liquid composition.
- the present invention has the following aspects.
- the liquid composition of [1] which does not contain liquid components other than the liquid (meth)acrylate, or contains the other liquid components in a proportion of 30% by mass or less.
- the liquid (meth)acrylate is glycol (meth)acrylate, alkylene glycol (meth)acrylate, glycerol (meth)acrylate, trimethylolpropane (meth)acrylate, ditrimethylolpropane (meth)acrylate, pentaerythritol (meth)acrylate, ) is at least one polyfunctional (meth)acrylate selected from the group consisting of acrylate, dipentaerythritol (meth)acrylate, erythritol (meth)acrylate, and dierythritol (meth)acrylate [1] or [2] liquid composition.
- a liquid (meth)acrylate having a seed viscosity of less than 10,000 mPa s is mixed to obtain a mixture, and the mixture is mixed with a (meth)acrylic-modified carboxyl group-containing aromatic resin varnish to obtain the above
- a method for producing a liquid composition comprising obtaining a liquid composition containing a tetrafluoroethylene-based polymer, the liquid (meth)acrylate, and the (meth)acrylic-modified carboxyl group-containing aromatic resin.
- a liquid (meth)acrylate having a seed viscosity of less than 10000 mPa s and a (meth)acryl-modified carboxyl group-containing aromatic resin are mixed to obtain a mixture, and the mixture and the (meth)acryl-modified Mixing with a varnish of a carboxyl group-containing aromatic resin to obtain a liquid composition containing the tetrafluoroethylene-based polymer, the liquid (meth)acrylate, and the (meth)acrylic-modified carboxyl group-containing aromatic resin.
- a method for producing a liquid composition [13]
- the base material includes a polymer layer containing a tetrafluoroethylene-based polymer and a metal layer provided on the surface of the polymer layer, and the convex portion is provided on the surface of the metal layer opposite to the polymer layer.
- liquid composition containing a tetrafluoroethylene-based polymer powder that is excellent in dispersion stability and handleability.
- the liquid composition of the present invention is excellent in physical properties such as electrical properties, and can form moldings (convex portions) with few defects.
- Average particle diameter (D50) is the volume-based cumulative 50% diameter of the object (powder and filler) determined by a laser diffraction/scattering method. That is, the particle size distribution is measured by a laser diffraction/scattering method, a cumulative curve is obtained with the total volume of the group of objects as 100%, and the particle diameter at the cumulative volume of 50% on the cumulative curve.
- the D50 of the object is obtained by dispersing the object in water and analyzing it by a laser diffraction/scattering method using a laser diffraction/scattering particle size distribution analyzer (LA-920 measuring instrument manufactured by Horiba, Ltd.). .
- Specific surface area is a value calculated by measuring powder by gas adsorption (constant volume method) BET multipoint method, and is determined using NOVA4200e (manufactured by Quantachrome Instruments).
- Melting temperature is the temperature corresponding to the maximum melting peak of the polymer as measured by differential scanning calorimetry (DSC).
- Viscosity is measured using a Brookfield viscometer at 25°C and 30 rpm. The measurement is repeated 3 times, and the average value of the 3 measurements is taken.
- a "unit” in a polymer means an atomic group based on the monomer formed by polymerization of the monomer.
- the units may be units directly formed by a polymerization reaction, or may be units in which some of said units have been converted to another structure by treatment of the polymer.
- units based on monomer a are also simply referred to as "monomer a units”.
- (Meth)acrylate” is a generic term for acrylate, methacrylate and both.
- (Meth)acryl is a generic term for acryl, methacryl and both.
- a "(meth)acryloyloxy group” is a generic term for an acryloyloxy group, a methacryloyloxy group, and both of them.
- the liquid composition of the present invention (hereinafter also referred to as “this composition”) is a powder (hereinafter also referred to as "F polymer”) of a tetrafluoroethylene polymer having a carbonyl group-containing group or a hydroxyl group-containing group (hereinafter referred to as "F polymer").
- F powder also referred to as “F powder”.
- polyfunctional (meth)acrylates and mono(meth)acrylates having a hydroxyl group or an oxyalkylene group a liquid having a viscosity of less than 10000 mPa s (Meth) acrylate (hereinafter also referred to as “liquid (meth) acrylate”) and (meth) acrylic-modified carboxyl group-containing aromatic resin (hereinafter also referred to as “modified aromatic resin”)
- It is preferably a liquid composition used for a negative resist composition.
- this method 1 comprises mixing F powder and liquid (meth)acrylate to obtain a mixture, and the mixture and a modified aromatic resin varnish. to obtain a liquid composition containing F polymer, liquid (meth)acrylate and modified aromatic resin.
- this method 2 comprises mixing F powder, liquid (meth)acrylate, and a modified aromatic resin to obtain a mixture, and a modified aromatic resin varnish to obtain a liquid composition containing F polymer, liquid (meth)acrylate, and modified aromatic resin.
- the composition contains F powder, it has excellent liquid physical properties (viscosity, thixotropic ratio, etc.), and is excellent in mixability with various other additives, dispersion stability, and handleability.
- molded articles eg, protrusions formed from the present composition have fewer defects, have the intended complex shape, and can exhibit the physical properties of the F polymer to a high degree. The reason for this and its mechanism of action are not necessarily clear, but are presumed, for example, as follows.
- the F polymer having a carbonyl group-containing group or a hydroxyl group-containing group has a higher surface energy than other tetrafluoroethylene-based polymers such as polytetrafluoroethylene, and has excellent affinity with other materials.
- the F powder itself excellent in dispersibility, but it also interacts with the modified aromatic resin and tends to be stable.
- the liquid (meth)acrylate contained in the present composition is highly compatible with both the F powder and the modified aromatic resin, and not only functions as a dispersion medium, but also disperses the F powder due to its surfactant action. It is also believed that this promotes stability and high compatibility of the modified aromatic resin. As a result, it is presumed that the dispersion stability of the present composition was enhanced as a result of the F powder being less likely to agglomerate.
- the molded article formed from the present composition has the F powder less likely to fall off and the occurrence of defects is reduced, contains the F powder densely and homogeneously, and has a high degree of physical properties based on the F polymer. .
- the F polymer in the present invention is a polymer having a carbonyl group-containing group or a hydroxyl group-containing group containing units based on tetrafluoroethylene (TFE) (TFE units).
- the F-polymer may be hot-melt or non-hot-melt, but is preferably hot-melt.
- thermal meltability refers to a melt fluid polymer having a melt flow rate of 0.1 to 1000 g/10 minutes at a temperature 20° C. or more higher than the melting temperature of the polymer under a load of 49 N. means.
- the F polymer is hot-meltable, it preferably has a melting temperature of 200-320°C, more preferably 260-320°C.
- Such a hot-melt F polymer has a conformation with a high degree of freedom in which restrictions on molecular motion are relaxed at the single-molecule level, and the effects of the present invention are highly likely to be exhibited.
- the fluorine atom content in the F polymer is preferably 70% by mass or more, more preferably 70 to 76% by mass. Such an F polymer having a high fluorine content has a particularly low affinity with other components and tends to aggregate easily. A composition having excellent properties is obtained.
- the glass transition point of F polymer is preferably 75 to 125°C, more preferably 80 to 100°C.
- F polymers include polymers containing TFE units and units based on ethylene (ETFE), polymers containing TFE units and units based on perfluoro(alkyl vinyl ether) (PAVE) (PAVE units) (PFA), TFE units and hexafluoropropene.
- ETFE perfluoro(alkyl vinyl ether)
- FEP polymers containing units based on (HFP) are mentioned.
- ETFE, PFA and FEP may further contain other units.
- CF 2 CFOCF 2 CF 3
- CF 2 CFOCF 2 CF 2 CF 3 (PPVE)
- the F polymer is preferably PFA or FEP, more preferably PFA.
- F polymers are also polymers with carbonyl- or hydroxyl-containing groups.
- it becomes easier to form microspherulites at the molecular assembly level the wettability of the F powder is improved, and the effects of the present invention described above are likely to be exhibited to a high degree.
- the present composition tends to be excellent in dispersion stability, and the obtained member with protrusions tends to be excellent in physical properties such as adhesiveness to the substrate, electrical properties, and surface smoothness.
- a carbonyl group-containing group or a hydroxyl group-containing group may be contained in a unit in the F polymer, or may be contained in a terminal group of the main chain of the F polymer.
- F polymers with groups or hydroxyl-containing groups are mentioned.
- a carbonyl group-containing group is a group containing a carbonyl group (>C(O)), and includes a carboxyl group, an alkoxycarbonyl group, an amide group, an isocyanate group, a carbamate group (-OC(O)NH 2 ), an acid anhydride residue, Groups (-C(O)OC(O)-), imide residues (-C(O)NHC(O)-, etc.) and carbonate groups (-OC(O)O-) are preferred, and acid anhydride residues is more preferred.
- the hydroxyl group-containing group is preferably a group containing an alcoholic hydroxyl group, more preferably -CF 2 CH 2 OH, -C(CF 3 ) 2 OH and 1,2-glycol group (-CH(OH)CH 2 OH). .
- the F polymer is preferably a polymer having carbonyl group-containing groups comprising TFE units and PAVE units, more preferably a polymer comprising units based on monomers having TFE units, PAVE units and carbonyl group-containing groups. , in this order, 90 to 99 mol %, 0.5 to 9.97 mol %, and 0.01 to 3 mol % of these units relative to all units.
- the presence of a carbonyl group-containing group is preferable from the viewpoint of further improving affinity and adhesion.
- the number of carbonyl group-containing groups in the F polymer is preferably 10 to 5000, more preferably 100 to 3000, more preferably 800 per 1 ⁇ 10 6 carbon atoms in the main chain. ⁇ 1500 is more preferred.
- the number of carbonyl group-containing groups in the F polymer can be quantified by the method described in WO2020/145133.
- the monomer having a carbonyl group-containing group is preferably itaconic anhydride, citraconic anhydride or 5-norbornene-2,3-dicarboxylic anhydride (hereinafter also referred to as "NAH"). Specific examples of such polymers include those described in WO2018/16644.
- the F powder preferably has a D50 of 0.1 to 25 ⁇ m.
- the D50 of the F powder is preferably 20 ⁇ m or less, more preferably 10 ⁇ m or less, and even more preferably 8 ⁇ m or less.
- D50 of the F powder is preferably 0.01 ⁇ m or more, more preferably 0.1 ⁇ m or more, and even more preferably 0.3 ⁇ m or more. In this range of D50, the fluidity and dispersibility of the F powder tend to be good.
- the specific surface area of the F powder is preferably 1 to 25 m 2 /g, more preferably 1 to 8 m 2 /g, even more preferably 1 to 3 m 2 /g.
- One type of F powder may be used, or two or more types may be used.
- the F powder may contain a resin or an inorganic filler other than the F polymer, but preferably contains the F polymer as a main component.
- the content of the F polymer in the F powder is preferably 80% by mass or more, more preferably 100% by mass.
- the resin include heat-resistant resins such as aromatic polyesters, polyamideimides, (thermoplastic) polyimides, polyphenylene ethers, polyphenylene oxides, and maleimides.
- inorganic fillers include silicon oxide (silica), metal oxides (beryllium oxide, cerium oxide, alumina, soda alumina, magnesium oxide, zinc oxide, titanium oxide, etc.), boron nitride, and magnesium metasilicate (steatite). .
- the F powder containing a resin other than the F polymer or an inorganic filler has a core-shell structure in which the F polymer is the core and the shell is a resin other than the F polymer or the inorganic filler, or the F polymer is the shell and the other than the F polymer. It may have a core-shell structure with a resin or inorganic filler in the core.
- Such F powder is obtained, for example, by coalescing (colliding, aggregating, etc.) powder of F polymer and powder of resin other than F polymer or inorganic filler.
- the liquid (meth)acrylate in the present composition is at least one compound selected from the group consisting of polyfunctional (meth)acrylates and mono(meth)acrylates having a hydroxyl group or an oxyalkylene group and is liquid at 25°C. . If the liquid (meth)acrylate is the former (meth)acrylate, the photocurability is improved, and a cured product having acid resistance, heat resistance, etc. can be obtained when the present composition is used particularly as a resist composition. .
- the viscosity of the liquid (meth)acrylate is less than 10000 mPa ⁇ s, preferably 1000 mPa ⁇ s or less, more preferably 300 mPa ⁇ s or less.
- the viscosity is preferably 1 mPa ⁇ s or more, more preferably 5 mPa ⁇ s or more.
- the molecular weight of the liquid (meth)acrylate is not particularly limited, and is preferably 60 to 2,000, more preferably 100 to 1,000.
- the boiling point of the liquid (meth)acrylate is preferably 100°C or higher.
- the boiling point is preferably 400°C or lower, more preferably 300°C or lower.
- the liquid (meth)acrylate is less likely to remain in the polymer layer, and various physical properties (electrical insulation properties) of the polymer layer etc.) can be easily improved.
- the smoothness of the surface of the polymer layer is likely to be further improved.
- liquid (meth)acrylates include the following compounds. Hydroxy or oxyalkylene groups such as 2-hydroxyethyl (meth)acrylate, phenoxyethyl (meth)acrylate, 2-hydroxy-3-phenoxypropyl (meth)acrylate, diethylene glycol mono(meth)acrylate, glycerol mono(meth)acrylate, etc.
- Pentaerythritol (meth)acrylates such as pentaerythritol di(meth)acrylate, pentaerythritol tri(meth)acrylate, and pentaerythritol tetra(meth)acrylate; Dipentaerythritol di(meth)acrylate, dipentaerythritol tri(meth)acrylate, dipentaerythritol tetra(meth)acrylate, dipentaerythritol penta(meth)acrylate, dipentaerythritol hexa(meth)acrylate, propionic acid-modified dipenta dipentaerythritol (meth)acrylates such as erythritol tri(meth)acrylate, propionic acid-modified dipentaerythritol penta(meth)acrylate, caprolactone-modified dipentaerythritol hexa(
- Liquid (meth)acrylates include glycol (meth)acrylate, alkylene glycol (meth)acrylate, glycerol (meth)acrylate, trimethylolpropane (meth)acrylate, ditrimethylolpropane (meth)acrylate, pentaerythritol (meth)acrylate, di At least one polyfunctional (meth)acrylate selected from the group consisting of pentaerythritol (meth)acrylate, erythritol (meth)acrylate, and dierythritol (meth)acrylate is preferred.
- Liquid (meth)acrylates are also available as commercial products, for example, "A-DPH” (dipentaerythritol polyacrylate, 7500 mPa s (25 ° C.)), “A-9550” (di ⁇ NK ester> series such as pentaerythritol polyacrylate, 6500 mPa ⁇ s (25°C).
- the present composition does not contain liquid components other than liquid (meth)acrylate, or contains such other liquid components, from the viewpoint of suppressing the shape of the molded product, especially shrinkage, when forming a molded product from it. Even when it is used, the ratio is preferably 30% by mass or less.
- the proportion of other liquid components in the present composition is preferably 25% by mass or less, more preferably 10% by mass or less, and even more preferably 5% by mass or less.
- the lower limit of the ratio (content) of other liquid components in the present composition is 0%.
- the other liquid component is a liquid component that is liquid at 25° C., does not react with any of the other constituent components of the present composition, and has a viscosity of 10000 mPa ⁇ s or less.
- liquid dispersion medium having the action of dissolving or dispersing liquid polymers other than acrylate and each component.
- liquid dispersion media include water, cellosolve solvents, ester solvents, propylene glycol solvents, ketone solvents, alcohol solvents, amide solvents, and aromatic hydrocarbon solvents.
- the modified aromatic resin in the composition has a carboxyl group and an ethylenically unsaturated double bond derived from a (meth)acryloyloxy group in the molecule.
- a modified aromatic resin is a photosensitive resin with good photocurability and developability, and is an alkali-soluble resin, so that it can be suitably used in a negative resist composition.
- a carboxyl group-containing phenolic resin is preferable, and a polyfunctional phenolic resin (for example, a polyfunctional novolac type epoxy resin) obtained by reacting epichlorohydrin with a phenolic hydroxyl group to epoxidize a (meth)acryl
- a carboxyl group-containing phenolic resin obtained by adding an organic polybasic acid anhydride to the hydroxyl groups present in the side chains after reacting with an acid is more preferable.
- organic polybasic acid anhydrides include phthalic anhydride, maleic anhydride, succinic anhydride, itaconic anhydride, tetrahydrophthalic anhydride, and hexahydrophthalic anhydride.
- Such a carboxyl group-containing phenolic resin is preferred because it readily interacts with the F polymer (in particular, the F polymer having a polar functional group).
- the modified aromatic resin preferably has an acid value of 150 mgKOH/g or less.
- the acid value is more preferably 120 mgKOH/g or less, even more preferably 90 mgKOH/g or less.
- the acid value is preferably 40 mgKOH/g or more, more preferably 45 mgKOH/g or more.
- a modified aromatic resin having such an acid value highly interacts with the F polymer to increase the dispersion stability of the F powder in the present composition.
- such a modified aromatic resin has good alkali developability, and it is easy to obtain a desired molded article (convex portion) having a complicated shape.
- the content of the F polymer in the composition is preferably 1 to 30% by mass, more preferably 5 to 20% by mass.
- the content of the modified aromatic resin in the present composition is preferably 10-60% by mass, more preferably 25-50% by mass.
- the content (percentage) of the modified aromatic resin is preferably greater than the content (percentage) of the F polymer.
- the handleability, photocurability and developability of the present composition are further improved.
- the mass ratio of the content of the modified aromatic resin to the content of the F polymer is preferably 1-10, more preferably 1-5.
- the total content of the F powder and the modified aromatic resin in the present composition is preferably 50% by mass or more, more preferably 60% by mass or more.
- the total content is preferably 90% by mass or less.
- the ratio of the mass of the liquid (meth)acrylate to the mass of the F powder in the present composition is preferably 0.1-100, more preferably 0.5-50.
- the composition may further contain an inorganic filler.
- inorganic fillers include fillers composed of oxides, nitrides, simple metals, alloys and carbon, silicates (silicon oxide (silica), wollastonite, talc, mica), metal oxides (oxidized Beryllium, cerium oxide, aluminum oxide, soda alumina, magnesium oxide, zinc oxide, titanium oxide, etc.), boron nitride and magnesium metasilicate (steatite) fillers are preferred and are selected from aluminum, magnesium, silicon, titanium, zinc Inorganic oxide fillers containing at least one of the elements are more preferred, silica, titanium oxide, zinc oxide, steatite and boron nitride fillers are more preferred, and silica fillers are particularly preferred.
- ceramics may be sufficient as an inorganic filler.
- 1 type may be used for an inorganic filler and it may mix and use 2 or more types.
- two or more kinds of inorganic fillers are mixed and used, two kinds of silica fillers may be mixed and used, or a silica filler and a metal oxide filler may be mixed and used.
- the use of a silica filler can sufficiently lower the linear expansion coefficient of a molded product (cured product) obtained from the present composition.
- the inorganic filler is a silica filler
- the content of silica in the inorganic filler is preferably 50% by mass or more, more preferably 75% by mass or more.
- the content of silica is preferably 100% by mass or less.
- At least part of the surface of the inorganic filler is preferably surface-treated.
- silane coupling agents are preferable, and 3-aminopropyltriethoxysilane, vinyltrimethoxysilane, 3-mercaptopropyltrimethoxysilane, 3-glycidoxypropylmethyldiethoxysilane. , 3-methacryloxypropyltriethoxysilane, and 3-isocyanatopropyltriethoxysilane are more preferred.
- D50 of the inorganic filler is preferably 25 ⁇ m or less, more preferably 15 ⁇ m or less. D50 of the inorganic filler is preferably 0.1 ⁇ m or more.
- the shape of the inorganic filler may be any of granular, needle-like (fibrous), and plate-like. Specific shapes of the inorganic filler include spherical, scaly, layered, leaf-like, apricot kernel-like, columnar, crest-like, equiaxed, leaf-like, mica-like, block-like, tabular, wedge-like, rosette-like, and network. shape and prismatic shape.
- the inorganic filler may be hollow, and may include a hollow filler and a non-hollow filler.
- inorganic fillers include silica fillers (“ADMAFINE (registered trademark)” series manufactured by Admatechs), zinc oxide surface-treated with an ester such as propylene glycol dicaprate (Sakai Chemical Industry Co., Ltd. "FINEX (registered trademark)” series manufactured by Denka), spherical fused silica (“SFP (registered trademark)” series manufactured by Denka, etc.), titanium oxide coated with polyhydric alcohol and inorganic substances (manufactured by Ishihara Sangyo Co., Ltd.
- Tipake registered trademark
- JMT registered trademark
- Talc filler Nippon Talc Co., Ltd.'s “SG” series, etc.
- Steatite filler Nippon Talc “BST” series, etc.
- boron nitride filler Showa Denko “UHP” series, Denka “Denka Boron Nitride” series ("GP", “HGP” grade), etc. mentioned.
- the present composition contains an inorganic filler
- its content is preferably 0.1 to 75% by mass, more preferably 1 to 60% by mass.
- the inorganic filler is contained in this range, the coefficient of linear expansion of the resulting molded product (cured product) can be lowered. Therefore, even if the molding is subjected to heat treatment, its deformation can be prevented.
- the composition may further contain an epoxy compound.
- an epoxy compound When the present composition contains an epoxy compound, the crosslink density of the cured product obtained by curing the present composition is increased, and properties such as mechanical strength, heat resistance, moisture resistance, chemical resistance, adhesion, flexibility, hardness, etc. tend to improve.
- Epoxy compounds include ethylene glycol diglycidyl ether, propylene glycol diglycidyl ether, polyethylene glycol diglycidyl ether, polypropylene glycol diglycidyl ether, polytetramethylene glycol diglycidyl ether, glycerol polyglycidyl ether, trimethylolpropane polyglycidyl ether, resorcinol.
- Novolak type epoxy resin (biphenyl novolak type epoxy resin, phenol novolak type epoxy resin, o-cresol novolak type epoxy resin, p-tert-butylphenol novolak type, etc.), bisphenol A type epoxy resin, bisphenol F type epoxy resin, bisphenol AF type Epoxy resins, bisphenol S-type epoxy resins, naphthalene-type epoxy resins, trisphenol-type epoxy resins, tert-butylcatechol-type epoxy resins, aminophenol-type epoxy resins, biphenyl-type epoxy resins, biphenylaralkyl-type epoxy resins, phenylaralkyl-type epoxy resins , a dicyclopentadiene type epoxy resin, an adamantane type epoxy resin, an alicyclic epoxy resin having a cyclohexene oxide group, a tricyclodecane oxide group, a cyclopentene oxide group, and the like.
- These epoxy resins may be solid (solid at 40
- epoxy compounds may be used alone or in combination of two or more.
- the present composition contains an epoxy compound, its content is 1 to 40 parts by mass based on 100 parts by mass of the modified aromatic resin (solid content) in order to reliably obtain a cured product with sufficient mechanical strength. is preferred.
- the present composition contains a semi-solid epoxy resin as an epoxy compound, the cured product obtained by curing the present composition (preferably a negative resist composition) has a high glass transition temperature (Tg) and a linear expansion coefficient It becomes low and tends to be excellent in crack resistance.
- Tg glass transition temperature
- the cured product tends to have a high glass transition temperature and excellent heat resistance
- the dry film tends to be excellent in flexibility.
- the composition may further contain a curing agent.
- curing agents include photopolymerization initiators (sensitizers) and curing agents capable of thermosetting reaction with the modified aromatic resin.
- the curing agent may undergo a thermosetting reaction with the F polymer. If the present composition contains a curing agent, the hardness of the molding formed from the present composition can be increased.
- photopolymerization initiators examples include alkylphenone-based photopolymerization initiators, acylphosphine oxide-based photopolymerization initiators, benzoin-based photopolymerization initiators, benzophenone-based photopolymerization initiators, 2,2′-azobisisobutyronitrile, Benzoyl peroxide can be mentioned.
- the curing agent capable of thermosetting reaction with the modified aromatic resin is selected from the group consisting of amines, imidazoles, phenols, acid anhydrides, compounds having a phenolic hydroxyl group, compounds having a cyanate ester group, and compounds having a maleimide group.
- At least one is preferable, and amine or imidazole is more preferable from the viewpoint of enhancing the stability of the present composition and the adhesion and electrical properties of a molded product (cured product) formed from the present composition.
- Curing agents may be used alone or in combination of two or more. When two or more of them are used together, one of the compounds may act as a curing agent, and the other compound may act as a curing accelerator.
- amines examples include aliphatic polyamines (alkylenediamines, polyalkylenepolyamines, aromatic ring-containing aliphatic polyamines, etc.), adduct compounds thereof (phenyl glycidyl ether, tolyl glycidyl ether, reaction products with alkyl glycidyl ether, etc.), alicyclic Polyamines (isophorone diamine, 1,3-bis (aminomethyl) cyclohexane, bis (4-aminocyclohexyl) methane, norbornene diamine, 1,2-diaminocyclohexane, lalomine, etc.), or their adduct compounds (n-butyl glycidyl ether or reaction product with bisphenol A diglycidyl ether) is preferred.
- imidazole examples include 2-methylimidazole, 4-methyl-2-ethylimidazole, 2-phenylimidazole, 4-methyl-2-phenylimidazole, 1-benzyl-2-methylimidazole, 2-ethylimidazole and 2-isopropylimidazole.
- 1-cyanoethyl-2-methylimidazole 1-cyanoethyl-2-ethyl-4-methylimidazole, 1-cyanoethyl-2-undecylimidazole, azine compound of imidazole, isocyanurate of imidazole, hydroxymethyl imidazole, or , these adduct compounds (reaction product of epoxy resin and imidazole, etc.) are preferred.
- phenol hydroquinone, resorcinol, or bisphenol A are preferable.
- Preferred acid anhydrides are phthalic anhydride, hexahydrophthalic anhydride, methylnadic anhydride, and benzophenonetetracarboxylic acid.
- Examples of compounds having a phenolic hydroxyl group include phenol novolak resins, alkylphenol borak resins, bisphenol A novolak resins, dicyclopentadiene type phenol resins, Xylok type phenol resins, terpene-modified phenol resins, cresol/naphthol resins, polyvinylphenols, phenol /naphthol resin, ⁇ -naphthol skeleton-containing phenolic resin, triazine skeleton-containing cresol novolac resin, biphenylaralkyl-type phenolic resin, Zyloc-type phenolic novolac resin, and the like.
- Examples of compounds having a cyanate ester group include phenol novolac type cyanate ester resins, alkylphenol novolac type cyanate ester resins, dicyclopentadiene type cyanate ester resins, bisphenol A type cyanate ester resins, bisphenol F type cyanate ester resins, bisphenol S type Cyanate ester resins are mentioned. Also, a prepolymer partially triazined may be used.
- Compounds having a maleimide group include, for example, 4,4'-diphenylmethanebismaleimide, phenylmethanebismaleimide, m-phenylenebismaleimide, 3,3'-dimethyl-5,5'-dimethyl-4,4'-diphenylmethanebismaleimide.
- the present composition contains a curing agent
- its content is preferably 0.01 to 15% by mass, more preferably 0.1 to 10% by mass. It is preferable to select the curing agent so that the curing initiation temperature of the present composition is 120 to 200°C.
- the "curing initiation temperature” is the temperature at which the initial change point occurs when the resulting composition is heated, as confirmed by differential scanning calorimetry (DSC).
- the composition may further contain a surfactant as a dispersant.
- Surfactants are preferably nonionic.
- the hydrophilic portion of the surfactant preferably has an oxyalkylene group or an alcoholic hydroxyl group, and the hydrophobic portion preferably has an acetylene group, polysiloxane group, perfluoroalkyl group or perfluoroalkenyl group.
- the surfactant is preferably an acetylene-based surfactant, a silicone-based surfactant, or a fluorine-based surfactant.
- the composition may further contain other resins.
- the other resin may be a thermosetting resin or a thermoplastic resin.
- Other resins include maleimide resins, urethane resins, polyimides, polyamic acids, polyamideimides, and polyvinyl acetal resins that do not have aromaticity.
- maleimide resins, polyimides and polyamic acids are preferred. In this case, a molded article formed from the present composition tends to be excellent in flexibility and adhesiveness.
- the present composition contains a silane coupling agent, a dehydrating agent, an antifoaming agent, a plasticizer, a weathering agent, an antioxidant, a heat stabilizer, a lubricant, an antistatic agent, a brightener, and a coloring agent. , a conductive agent, a release agent, a surface treatment agent, a flame retardant, and other additives.
- Examples of the solvent constituting the modified aromatic resin varnish in Method 1 or Method 2 include N-methyl-2-pyrrolidone, cyclohexanone, and toluene.
- the content of the modified aromatic resin in the modified aromatic resin varnish is preferably in the range of 20 to 90% by mass.
- Method 1 F powder and liquid (meth)acrylate are mixed to obtain a mixture, the mixture and modified aromatic resin varnish are mixed, and F polymer, liquid (meth)acrylate, and modified aromatic A liquid composition containing a group resin is obtained.
- the mixture and the modified aromatic resin varnish may be mixed together, the mixture may be mixed with the varnish sequentially, or the varnish may be mixed with the mixture sequentially.
- Method 2 F powder, liquid (meth)acrylate, and modified aromatic resin are mixed to obtain a mixture, the mixture and modified aromatic resin varnish are mixed, and F polymer and liquid ( A liquid composition containing meth)acrylate and a modified aromatic resin is obtained.
- the mixture obtained in advance and the modified aromatic resin varnish may be mixed together, and the mixture may be mixed with the modified aromatic resin varnish sequentially. Alternatively, the mixture may be successively mixed with the modified aromatic resin varnish.
- the modified aromatic resin that is mixed in advance in Method 2 and the modified aromatic resin that constitutes the varnish of the modified aromatic resin may be different, the same type may be used, and the same type may be used. is preferred.
- the composition is preferably produced by Method 1 or Method 2.
- the mixing method may be either a batch type or a continuous type, and a stirring device equipped with uniaxial or multiaxial blades (stirring blades) such as propeller blades, turbine blades, paddle blades, shell-shaped blades, Henschel mixer, pressurization Stirring by kneader, Banbury mixer or planetary mixer; ball mill, attritor, basket mill, sand mill, sand grinder, dyno mill (bead mill using grinding media such as glass beads or zirconium oxide beads), dispermat, SC mill, spike mill Alternatively, mixing with a dispersing machine that uses media such as an agitator mill; use a dispersing machine that does not use media, such as a high-pressure homogenizer such as a microfluidizer, nanomizer, or articulzer, an ultrasonic homogenizer, a dissolver, a disper, or a high-speed impeller dispersing machine.
- a dispersing machine that does not use media, such as
- a Henschel mixer, a pressure kneader, a Banbury mixer or a planetary mixer is preferred, and a planetary mixer is more preferred.
- the planetary mixer has two stirring blades that rotate and revolve with each other, and has a structure for stirring and mixing and kneading the mixture in the stirring vessel. Therefore, there is little dead space in the agitation vessel that the agitating blades do not reach, reducing the load on the agitating blades and allowing the contents to be mixed to a high degree.
- a twin-screw extrusion kneader is, for example, a twin-screw continuous kneading device that mixes a material to be mixed by shearing force between two screws arranged in parallel and close to each other.
- a stone mill type kneader is, for example, a cylindrical fixed part with an internal space through which the material to be mixed can pass. It is a kneader having a rotating part that conveys in the direction of the rotating shaft while rotating.
- the mixing is carried out by using a stirrer comprising a cylindrical stirring tank and a rotating part having a cylindrical part with a plurality of holes that rotates inside the inner wall surface of the stirring tank.
- the composition may be spread on the inner wall surface of the stirring vessel in the form of a cylindrical thin film by force while being stirred.
- a three-roll mill is equipped with three rotating rolls, a low-speed roll (preparation roll), a medium-speed roll (intermediate roll), and a high-speed roll (finishing roll), and compresses and compresses the mixture through the gap between the low-speed roll and the medium-speed roll. It is a roll mill equipped with a mechanism for shearing and mixing, transferring the mixture passed between low-speed rolls and medium-speed rolls to high-speed rolls, and scraping off with a doctor blade. Regarding the rotation speed of the three rotating rolls, it is preferable that the speed of the medium speed roll is three times the speed of the low speed roll, and the speed of the high speed roll is nine times the speed of the low speed roll. Furthermore, the mixing method in this method may combine a plurality of the mixing methods described above.
- Method 1 or Method 2 when optional additive components such as inorganic fillers, epoxy compounds, curing agents, dispersants, and other liquid components are further mixed, they can be mixed at any stage.
- the mixing method includes the same mixing method as described above.
- the preferred content ranges of the F polymer, the liquid (meth)acrylate, and the modified aromatic resin in the liquid composition obtained by Method 1 or Method 2 are the same as the content of the F polymer in the composition.
- the content of the modified aromatic resin is the total amount of the modified aromatic resin mixed in advance and the modified aromatic resin constituting the varnish of the modified aromatic resin.
- This composition can be suitably used as a negative resist composition.
- the resist composition can be applied to the surface of the substrate by a coating method such as screen printing, bar coating, or blade coating. After application, the coating is preferably dried in order to obtain dry-to-touch properties.
- the drying conditions are preferably 75 to 95° C. for 40 to 70 minutes.
- a hot air circulation drying oven or a far infrared drying oven can be used.
- the thickness of the coating film after drying (dry coating) is preferably 10 to 150 ⁇ m, more preferably 20 to 60 ⁇ m, from the viewpoint of good developability of the dry coating.
- an exposure mask having a predetermined exposure pattern is used to irradiate the dry film with exposure light.
- Halogen lamps, high-pressure mercury lamps, laser beams, metal halide lamps, black lamps, electrodeless lamps, and the like can be used as exposure light sources.
- a pattern may be formed on the dry film by a laser direct imaging device without using an exposure mask.
- the dried film after exposure is developed with a developer.
- unnecessary portions of the dry coating are removed to obtain a dry coating having a predetermined pattern.
- the developer can be applied to the dry film after exposure by a spray method, an immersion method, or the like.
- As the developer it is preferable to use an alkaline aqueous solution containing an alkali such as sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate or sodium silicate. According to the present composition, since a dilute alkaline aqueous solution can be used as a developer, a dry film with less damage and excellent resolution can be obtained.
- the dried film after development is preferably washed with water or acid-neutralized in order to remove unnecessary developer.
- the obtained dried film after development is cured (post-cured) by irradiation with active energy rays such as ultraviolet rays.
- active energy rays such as ultraviolet rays.
- the dried film after development can also be cured by heating.
- a cured film (molded product such as projections) having excellent adhesion and crack resistance can be obtained.
- the composition can also be suitably used as a filling material for filling through holes or recesses in multilayer printed wiring boards.
- a multilayer printed wiring board has a plurality of circuit patterns laminated via insulating layers.
- the insulating layer is composed of polyphenylene ether, polyphenylene oxide, cyanate ester, polyimide, fluoropolymer, or the like.
- the circuit pattern is composed of a metal film formed by plating or the like.
- This multilayer printed wiring board has a through hole penetrating in its thickness direction or a concave portion which is recessed.
- the through holes or recesses are formed by drilling or laser processing.
- a conductive film is formed on the inner surface of the through hole or recess, and predetermined circuit patterns are electrically connected to each other.
- Such through-holes or recesses can be filled with the present composition and cured to fill the through-holes or recesses.
- Filling of the through-holes or recesses with the present composition can be carried out by screen printing, roll coating, die coating or vacuum printing. At this time, it is preferable to fill the composition to such an extent that it protrudes from the through holes or recesses.
- the composition contains a curing agent
- the heating conditions for this composition are preferably 80 to 160° C. for 30 to 180 minutes. From the viewpoint of suppressing outgassing during curing of the present composition, it is preferable to cure the present composition in two stages, a temporary curing stage and a final curing stage.
- the conditions for temporary curing are preferably 80 to 110° C. for 30 to 90 minutes.
- the conditions for main curing are preferably 130 to 160° C. for 30 to 180 minutes. Since the present composition has a small volume change rate upon curing, it is possible to prevent deterioration of the shape stability of the multilayer printed wiring board.
- unnecessary portions protruding from the through-holes or concave portions of the molding may be removed to flatten the molding.
- a metal film may be formed on the surface of the multilayer printed wiring board by plating or the like, and patterned into a predetermined pattern to form a circuit pattern.
- the surface of the multilayer printed wiring board may be roughened with an aqueous solution of potassium permanganate or the like, if necessary.
- the composition can also be suitably used to produce dry films.
- a dry film can be produced by coating the present composition on a carrier film and drying to form a resin film as a dry film.
- a protective film may be laminated on the dry film, if necessary.
- a carrier film is a film having a function of supporting a dry film. Examples of such carrier films include polyolefin films, polyester films, polyimide films, polyamideimide films, polytetrafluoroethylene films, polystyrene films, and surface-treated paper substrates. Among them, a polyester film is preferable from the viewpoint of heat resistance, mechanical strength, handleability, and the like. A release treatment may be applied to the surface of the carrier film.
- the protective film is a film that is attached to the surface of the dry film opposite to the carrier film for the purpose of preventing dust from adhering to the surface of the dry film and improving the handleability of the dry film.
- the protective film for example, the same film or paper substrate as mentioned for the carrier film is used, and polyolefin film or polyester film is preferable. A release treatment may be applied to the surface of the protective film.
- Methods for producing a printed wiring board from a laminated film having a dry film, a carrier film and a protective film include the following methods. First, one of the carrier film and the protective film is peeled off from the dry film. When the present composition contains a curing agent or a curing accelerator, it is then thermally cured after being pressure-bonded to a circuit board having a circuit pattern formed thereon. An oven, a heat press machine, or the like can be used for heat curing. After that, a through hole (via hole) is formed at a predetermined location of the circuit board by laser processing or drill processing to expose the circuit pattern. A printed wiring board is thus obtained.
- an unnecessary component remains on the circuit pattern because it cannot be completely removed, it is preferable to perform a desmear process.
- the other of the carrier film and protective film is peeled off from the dry film at a predetermined stage.
- a conductive film formed on the inner surface of the through hole, or a pillar or post housed in the through hole can be used.
- the substrate with protrusions of the present invention includes a substrate and protrusions provided on the surface of the substrate and having a predetermined pattern formed from the composition. and
- the projections can be produced by the above-described method using the present composition as a negative resist composition. Even if the height of the projections in the substrate with projections is low, the projections do not collapse easily, and a highly accurate pattern with few defects can be formed.
- the height of the projections is preferably 500 ⁇ m or less, more preferably less than 100 ⁇ m.
- the height of the projections is preferably 1 ⁇ m or more, more preferably 10 ⁇ m or more.
- base material I an active matrix substrate having pixel electrodes, switching elements and wiring formed thereon
- base material II a laminate obtained by laminating a polymer film and a metal layer, and the like
- the projections are provided as frames on the surface of the active matrix substrate, for example, so as to expose the pixel electrodes.
- an organic EL layer an electron-transporting layer, a light-emitting layer, a hole-transporting layer, etc.
- an electrophoretic dispersion containing electrophoretic particles are arranged in a space defined by the convex portions, and a common electrode and the like are provided.
- a display device (electronic device) can be manufactured by arranging a counter substrate opposite to an active matrix substrate.
- the protrusions can be provided with functions as spacers that define the distance between the two substrates and as black matrices that prevent crosstalk between unit pixels.
- the protrusions in the present base material with protrusions have excellent water and oil repellency and have few defects, the ink and electrophoretic dispersion liquid forming the organic EL layer are less likely to adhere to the protrusions, and the display performance is excellent. A display device is obtained.
- the convex portion is excellent in electrical characteristics (low dielectric constant property), parasitic capacitance is less likely to occur in the display device, and degradation in switching characteristics can be prevented.
- the polymer film may be a single-layer film consisting of only a polymer layer, or a laminated film having a polymer layer as a surface layer and a support layer that supports the surface layer (polymer layer). good too.
- the support layer can be composed of a heat-resistant resin film, a prepreg that is a precursor of a fiber-reinforced resin plate, a film having a heat-resistant resin layer, or a film having a prepreg layer.
- a prepreg is a sheet-like substrate obtained by impregnating a fiber base material (tow, woven fabric, etc.) of reinforcing fibers (glass fiber, carbon fiber, etc.) with a thermosetting resin or thermoplastic resin.
- a heat resistant resin film is a film comprising one or more heat resistant resins.
- heat-resistant resins include polyimides, polyarylates, polysulfones, polyallylsulfones, aromatic polyamides, aromatic polyetheramides, polyphenylene sulfides, polyaryletherketones, polyamideimides, liquid crystalline polyesters, and liquid crystalline polyesteramides.
- Polyimides (especially aromatic polyimides), F polymers, and fluorine resins other than F polymers are preferred.
- the polymer layer preferably contains the heat-resistant resin described above, more preferably the F polymer. In such a case, the base material tends to be excellent in low dielectric loss tangent property, and the convex portion and the base material are likely to adhere firmly.
- the polymer layer containing the F polymer may be obtained by melt-kneading the F polymer and extruding.
- the laminated film is obtained by thermocompression bonding the film containing the F polymer and the support layer.
- a polymer layer containing F polymer may be obtained by applying a dispersion containing F powder and a liquid dispersion medium to a substrate and heating the same.
- a single-layer film containing the F polymer can be obtained by peeling off the substrate, and a laminated film can be obtained by using the film constituting the support layer as the substrate and not peeling off the substrate.
- a laminate as the substrate II can be produced by thermocompression bonding a polymer film and a metal foil.
- Materials for the metal foil include copper, copper alloys, stainless steel, nickel, nickel alloys (including 42 alloys), aluminum, aluminum alloys, titanium, and titanium alloys.
- the metal foil is preferably copper foil, more preferably rolled copper foil or electrolytic copper foil.
- a suitable aspect of the laminate as the base material II is an aspect of prepreg layer/polymer layer containing F polymer/metal layer.
- the metal layer may have a predetermined pattern.
- the projections may be formed on a metal layer having no pattern, and the projections may be used as a mask to etch the metal layer and process it into a circuit to obtain a printed wiring board.
- the present invention is not limited to the configurations of the above-described embodiments.
- the present composition may add any other configuration to the configurations of the above-described embodiments, or may replace it with any configuration that exhibits similar functions.
- the manufacturing method of the present composition may additionally have any other step in the configuration of the above embodiment, or may be replaced with any step that produces the same effect.
- F powder 1 containing 97.9 mol%, 0.1 mol% and 2.0 mol% of TFE units, NAH units and PPVE units in this order, and a carbonyl group-containing group per 1 ⁇ 10 main chain carbon atoms Powder (D50: 2.1 ⁇ m, specific surface area: 2.5 m 2 /g) composed of F polymer 1 (melting temperature: 300° C.) having 1000 particles [Varnish of modified aromatic resin]
- Varnish 1 Acryl-modified carboxyl group-containing phenolic resin (modified aromatic resin 1, acid value: 80 mg KOH/g) of varnish (solvent: toluene) [Liquid (meth)acrylate]
- Acrylate 1 triethylene glycol diacrylate (viscosity: 9 mPa s)
- Inorganic filler 1 aluminum hydroxide fill
- Example 1-1 F powder 1 and acrylate 1 were put into a planetary mixer and kneaded to obtain a mixture 1 containing F powder 1 (40 parts by mass) and acrylate 1 (20 parts by mass). Subsequently, the varnish 1 was added to the mixture 1 in multiple portions and kneaded with a planetary mixer, F powder 1 (40 parts by mass), modified aromatic resin 1 (20 parts by mass), acrylate 1 ( 20 parts by mass) and toluene-containing liquid composition 1A was obtained. The proportion of toluene in liquid composition 1A was adjusted to be less than 10% by mass.
- liquid composition 1A varnish 1, inorganic filler 1, epoxy compound 1, and curing agent 1 are put into a planetary mixer and mixed, F powder 1 (40 parts by mass), modified aromatic resin 1 (80 parts by mass), acrylate 1 (20 parts by mass), inorganic filler 1 (5 parts by mass), epoxy compound 1 (15 parts by mass) and curing agent 1 (2 parts by mass).
- the proportion of toluene in liquid composition 1B was adjusted to be less than 10% by mass.
- the liquid composition 1B had excellent dispersibility with no visible aggregates even after being stored at 25° C. for 30 days.
- Example 1-2 F powder 1 (40 parts by mass), modified aromatic resin 1 (20 parts by mass), methyl A liquid composition 2A containing methacrylate (20 parts by mass) and toluene was obtained. Furthermore, the liquid composition 2A, varnish 1, inorganic filler 1, epoxy compound 1, and curing agent 1 are put into a planetary mixer and mixed, F powder 1 (40 parts by mass), modified aromatic resin 1 (80 parts by mass), methyl methacrylate (20 parts by mass), inorganic filler 1 (5 parts by mass), epoxy compound 1 (15 parts by mass) and curing agent 1 (2 parts by mass). The proportion of toluene in liquid composition 2B was adjusted to be less than 10% by mass. The liquid composition 2B was separated into two layers after being stored at 25° C. for 30 days, and was difficult to redisperse.
- the layer after UV irradiation was developed with a 1.0% by mass sodium carbonate aqueous solution to form projections.
- the pencil hardness of the convex portion was 4H, which was equivalent to the pencil hardness of the convex portion formed only from the varnish 1.
- the electrical properties at 10 MHz were measured using an SPDR (split post dielectric resonator) and a network analyzer. It was 0.05 or less, showing excellent electrical properties.
- Example 2-2 In the same manner as in Example 1-3, except that the liquid composition 1B was changed to the liquid composition 2B, the surface of the laminate of the F polymer 1 film and the electrolytic copper foil was coated with the liquid composition 2B, and the laminate was obtained. A layer formed from liquid composition 2B was formed thereon. In the same manner as in Example 1-3, this layer was subjected to exposure treatment to attempt to form convex portions, but particles and fillers were confirmed to fall off from the convex portions, and convex portions of good shape could not be formed.
- the liquid composition of the present invention is excellent in dispersion stability and handleability. Since such a liquid composition can form a molded article having excellent physical properties such as electrical properties, such a liquid composition can be used, for example, as a solder resist composition, as well as films, fiber reinforced films, prepregs, metal laminates (with resin It is useful as a material for metal foil).
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Abstract
Description
また、近年、プリント配線板等の電子部品の絶縁部の電気特性(低誘電率性、低誘電正接性)を向上させる観点から、絶縁部の材料に、テトラフルオロエチレン系ポリマーのパウダーを配合する検討が盛んにされている。
特許文献1には、電子部品を形成するためのレジスト組成物に、テトラフルオロエチレン系ポリマーのパウダーを配合する提案がされている。
特許文献2には、プリント配線板の永久保護膜、例えばソルダーレジスト層、層間絶縁層、フレキシブルプリント配線板のカバーレイの形成に用いられる熱硬化性樹脂組成物に、テトラフルオロエチレン系ポリマーのパウダーを配合する提案がされている。
本発明の目的は、分散安定性及び取扱い性に優れる、テトラフルオロエチレン系ポリマーのパウダーを含む、好適にはレジスト組成物である液状組成物、かかる液状組成物の製造方法、並びにかかる液状組成物から形成された所定のパターンを有する凸部を有する、凸部付き部材の提供である。
[1] カルボニル基含有基又は水酸基含有基を有するテトラフルオロエチレン系ポリマーのパウダーと、多官能(メタ)アクリレート及び水酸基若しくはオキシアルキレン基を有するモノ(メタ)アクリレートからなる群から選ばれる少なくとも1種の、粘度が10000mPa・s未満である液状(メタ)アクリレートと、(メタ)アクリル変性されたカルボキシル基含有芳香族樹脂とを含有する、液状組成物。
[2] 前記液状(メタ)アクリレート以外の他の液状成分を含有しないか、又は30質量%以下の割合で前記他の液状成分を含有する、[1]の液状組成物。
[3] 前記液状(メタ)アクリレートが、グリコール(メタ)アクリレート、アルキレングリコール(メタ)アクリレート、グリセロール(メタ)アクリレート、トリメチロールプロパン(メタ)アクリレート、ジトリメチロールプロパン(メタ)アクリレート、ペンタエリスリトール(メタ)アクリレート、ジペンタエリスリトール(メタ)アクリレート、エリスリトール(メタ)アクリレート、及びジエリスリトール(メタ)アクリレートからなる群から選ばれる少なくとも1種の多官能(メタ)アクリレートである、[1]又は[2]の液状組成物。
[4] 前記テトラフルオロエチレン系ポリマーが、フッ素原子含有量が70質量%以上であるテトラフルオロエチレン系ポリマーである、[1]~[3]のいずれかの液状組成物。
[5] 前記パウダーの平均粒子径(体積基準累積50%径)が、0.1~25μmである、[1]~[4]のいずれかの液状組成物。
[6] 前記パウダーの比表面積が1~25m2/gである、[1]~[5]のいずれかの液状組成物。
[7] さらに、無機フィラーを含む、[1]~[6]のいずれかの液状組成物。
[8] さらに、エポキシ化合物を含む、[1]~[7]のいずれかの液状組成物。
[9] さらに、硬化剤を含む、[1]~[8]のいずれかの液状組成物。
[10] ネガ型のレジスト組成物に用いられる、[1]~[9]のいずれかの液状組成物。
[11] カルボニル基含有基又は水酸基含有基を有するテトラフルオロエチレン系ポリマーのパウダーと、多官能(メタ)アクリレート及び水酸基若しくはオキシアルキレン基を有するモノ(メタ)アクリレートからなる群から選ばれる、少なくとも1種の粘度が10000mPa・s未満である液状(メタ)アクリレートとを混合して混合物を得て、前記混合物と(メタ)アクリル変性されたカルボキシル基含有芳香族樹脂のワニスとを混合して、前記テトラフルオロエチレン系ポリマーと前記液状(メタ)アクリレートと前記(メタ)アクリル変性されたカルボキシル基含有芳香族樹脂を含む液状組成物を得る、液状組成物の製造方法。
[12] カルボニル基含有基又は水酸基含有基を有するテトラフルオロエチレン系ポリマーのパウダーと、多官能(メタ)アクリレート及び水酸基若しくはオキシアルキレン基を有するモノ(メタ)アクリレートからなる群から選ばれる、少なくとも1種の粘度が10000mPa・s未満である液状(メタ)アクリレートと、(メタ)アクリル変性されたカルボキシル基含有芳香族樹脂とを混合して混合物を得て、前記混合物と(メタ)アクリル変性されたカルボキシル基含有芳香族樹脂のワニスとを混合して、前記テトラフルオロエチレン系ポリマーと前記液状(メタ)アクリレートと前記(メタ)アクリル変性されたカルボキシル基含有芳香族樹脂を含む液状組成物を得る、液状組成物の製造方法。
[13] 基材と、前記基材の表面に設けられ、[1]~[11]のいずれかの液状組成物から形成された所定のパターンを有する凸部とを有する、凸部付き基材。
[14] 前記凸部の高さが、500μm以下である、[13]の凸部付き基材。
[15] 前記基材が、テトラフルオロエチレン系ポリマーを含むポリマー層と、前記ポリマー層の表面に設けられた金属層とを備え、前記金属層の前記ポリマー層と反対側の表面に前記凸部を有する、[13]又は[14]の凸部付き基材。
「平均粒子径(D50)」は、レーザー回折・散乱法によって求められる、対象物(パウダー及びフィラー)の体積基準累積50%径である。すなわち、レーザー回折・散乱法によって粒度分布を測定し、対象物の集団の全体積を100%として累積カーブを求め、その累積カーブ上で累積体積が50%となる点の粒子径である。
対象物のD50は、対象物を水中に分散させ、レーザー回折・散乱式の粒度分布測定装置(堀場製作所社製、LA-920測定器)を用いたレーザー回折・散乱法により分析して求められる。
「比表面積」は、ガス吸着(定容法)BET多点法でパウダーを測定し算出される値であり、NOVA4200e(Quantachrome Instruments社製)を使用して求められる。
「溶融温度」は、示差走査熱量測定(DSC)法で測定したポリマーの融解ピークの最大値に対応する温度である。
「粘度」は、B型粘度計を用いて、25℃で回転数が30rpmの条件下で測定される粘度である。測定を3回繰り返し、3回分の測定値の平均値とする。
ポリマーにおける「単位」とは、モノマーの重合により形成された前記モノマーに基づく原子団を意味する。単位は、重合反応によって直接形成された単位であってもよく、ポリマーを処理することによって前記単位の一部が別の構造に変換された単位であってもよい。以下、モノマーaに基づく単位を、単に「モノマーa単位」とも記す。
「(メタ)アクリレート」はアクリレート、メタアクリレート及びそれらの双方を総称する用語である。「(メタ)アクリル」はアクリル、メタアクリル及びそれらの双方を総称する用語である。「(メタ)アクリロイルオキシ基」は、アクリロイルオキシ基、メタクリロイルオキシ基及びそれらの双方を総称する用語である。
また、本発明の製造方法(以下、「本法1」とも記す。)は、Fパウダーと、液状(メタ)アクリレートとを混合して混合物を得て、前記混合物と変性芳香族樹脂のワニスとを混合して、Fポリマーと液状(メタ)アクリレートと変性芳香族樹脂を含む液状組成物を得る方法である。
さらに、本発明の別の製造方法(以下、「本法2」とも記す。)は、Fパウダーと、液状(メタ)アクリレートと、変性芳香族樹脂とを混合して混合物を得て、前記混合物と変性芳香族樹脂のワニスとを混合して、Fポリマーと液状(メタ)アクリレートと変性芳香族樹脂を含む液状組成物を得る方法である。
カルボニル基含有基又は水酸基含有基を有するFポリマーは、ポリテトラフルオロエチレン等の他のテトラフルオロエチレン系ポリマーと比較して表面エネルギーが高く、他の材料との親和性に優れている。そのため、Fパウダー自体が分散性に優れるだけでなく、変性芳香族樹脂とも相互作用して安定しやすい。さらに、本組成物に含まれる液状(メタ)アクリレートは、Fパウダーと変性芳香族樹脂といずれとも高度に親和しやすく、分散媒として機能するだけでなく、その界面活性作用によって、Fパウダーの分散安定性と、変性芳香族樹脂の高度な相溶とを促しているとも考えられる。そのため、Fパウダーが凝集しにくく、その結果、本組成物の分散安定性が高まったと推察される。
さらに、かかる状態で本組成物を硬化させるため、Fパウダーは変性芳香族樹脂及び液状(メタ)アクリレートのマトリックスに強固に保持され、硬化に伴う収縮が抑制される。したがって、本組成物から形成される成形物は、Fパウダーが脱落しにくく欠陥の発生が低減されるとともに、Fパウダーを緻密かつ均質に含み、Fポリマーに基づく物性を高度に具備したと考えられる。
Fポリマーが熱溶融性の場合、溶融温度が200~320℃であるのが好ましく、260~320℃がより好ましい。かかる熱溶融性のFポリマーは、単分子レベルで分子運動の制限が緩和された、自由度の高いコンフォメーションを有しており、本発明の効果が高度に発現しやすい。
Fポリマーのガラス転移点は、75~125℃が好ましく、80~100℃がより好ましい。
Fポリマーは、PFA又はFEPであるのが好ましく、PFAであるのがより好ましい。
カルボニル基含有基又は水酸基含有基は、Fポリマー中の単位に含まれていてもよく、Fポリマーの主鎖の末端基に含まれていてもよい。後者の態様としては、重合開始剤、連鎖移動剤等に由来する末端基としてカルボニル基含有基又は水酸基含有基を有するFポリマー、Fポリマーをプラズマ処理や電離線処理して得られる、カルボニル基含有基又は水酸基含有基を有するFポリマーが挙げられる。
水酸基含有基は、アルコール性水酸基を含有する基が好ましく、-CF2CH2OH、-C(CF3)2OH及び1,2-グリコール基(-CH(OH)CH2OH)がより好ましい。
Fポリマーがカルボニル基含有基を有する場合、Fポリマーにおけるカルボニル基含有基の数は、主鎖の炭素数1×106個あたり、10~5000個が好ましく、100~3000個がより好ましく、800~1500個がさらに好ましい。なお、Fポリマーにおけるカルボニル基含有基の数は、国際公開第2020/145133号に記載の方法によって定量できる。
また、カルボニル基含有基を有するモノマーは、無水イタコン酸、無水シトラコン酸又は5-ノルボルネン-2,3-ジカルボン酸無水物(以下、「NAH」とも記す。)が好ましい。かかるポリマーの具体例としては、国際公開第2018/16644号に記載されるポリマーが挙げられる。
分散安定性の観点から、Fパウダーの比表面積は、1~25m2/gが好ましく、1~8m2/gがより好ましく、1~3m2/gがさらに好ましい。
Fパウダーは、1種を用いてもよく、2種以上を用いてもよい。
上記樹脂としては、芳香族ポリエステル、ポリアミドイミド、(熱可塑性)ポリイミド、ポリフェニレンエーテル、ポリフェニレンオキシド、マレイミド等の耐熱性樹脂が挙げられる。無機フィラーとしては、酸化ケイ素(シリカ)、金属酸化物(酸化ベリリウム、酸化セリウム、アルミナ、ソーダアルミナ、酸化マグネシウム、酸化亜鉛、酸化チタン等)、窒化ホウ素、メタ珪酸マグネシウム(ステアタイト)が挙げられる。無機フィラーは、その表面の少なくとも一部が表面処理されていてもよい。
Fポリマー以外の樹脂又は無機フィラーを含むFパウダーは、Fポリマーをコアとし、Fポリマー以外の樹脂又は無機フィラーをシェルに有するコア-シェル構造を有するか、Fポリマーをシェルとし、Fポリマー以外の樹脂又は無機フィラーをコアに有するコア-シェル構造を有していてもよい。かかるFパウダーは、例えば、Fポリマーのパウダーと、Fポリマー以外の樹脂のパウダー又は無機フィラーとを合着(衝突、凝集等)させて得られる。
液状(メタ)アクリレートの粘度は10000mPa・s未満であり、1000mPa・s以下であるのが好ましく、300mPa・s以下であるのがより好ましい。かかる粘度は1mPa・s以上であるのが好ましく、5mPa・s以上であるのがより好ましい。
また、液状(メタ)アクリレートの分子量は特に限定されず、60~2000であるのが好ましく、100~1000であるのがより好ましい。
2-ヒドロキシエチル(メタ)アクリレート、フェノキシエチル(メタ)アクリレート、2-ヒドロキシ-3-フェノキシプロピル(メタ)アクリレート、ジエチレングリコールモノ(メタ)アクリレート、グリセロールモノ(メタ)アクリレート等の、水酸基若しくはオキシアルキレン基を有するモノ(メタ)アクリレート;
1,4-ブタンジオールジ(メタ)アクリレート、1,6-ヘキサンジオールジ(メタ)アクリレート、ネオペンチルグリコールジ(メタ)アクリレート、ジシクロペンタニルジ(メタ)アクリレート、カプロラクトン変性ジシクロペンタニルジ(メタ)アクリレート、ヒドロキシピバリン酸ネオペンチルグリコールジ(メタ)アクリレート、アリル化シクロヘキシルジ(メタ)アクリレート等のグリコール(メタ)アクリレート;
ジエチレングリコールジ(メタ)アクリレート、トリエチレングリコールジ(メタ)アクリレート、ネオペンチルグリコールアジペートジ(メタ)アクリレート、ポリエチレングリコールジ(メタ)アクリレート等のアルキレングリコール(メタ)アクリレート;
グリセリンジ(メタ)アクリレート、グリセリントリ(メタ)アクリレート、エトキシ化グリセリントリ(メタ)アクリレート、グリセリンプロポキシレート(1PO/OH)トリ(メタ)アクリレート等のグリセロール(メタ)アクリレート;
トリメチロールプロパンジ(メタ)アクリレート、トリメチロールプロパントリ(メタ)アクリレート、プロピレンオキシド変性トリメチロールプロパンジ(メタ)アクリレート、プロピレンオキシド変性トリメチロールプロパントリ(メタ)アクリレート等のトリメチロールプロパン(メタ)アクリレート;
ジトリメチロールプロパンジ(メタ)アクリレート、ジトリメチロールプロパントリ(メタ)アクリレート、ジトリメチロールプロパンテトラ(メタ)アクリレート等のジトリメチロールプロパン(メタ)アクリレート;
ジペンタエリスリトールジ(メタ)アクリレート、ジペンタエリスリトールトリ(メタ)アクリレート、ジペンタエリスリトールテトラ(メタ)アクリレート、ジペンタエリスリトールペンタ(メタ)アクリレート、ジペンタエリスリトールヘキサ(メタ)アクリレート、プロピオン酸変性ジペンタエリスリトールトリ(メタ)アクリレート、プロピオン酸変性ジペンタエリスリトールペンタ(メタ)アクリレート、カプロラクトン変性ジペンタエリスリトールヘキサ(メタ)アクリレート等のジペンタエリスリトール(メタ)アクリレート;
エリスリトールジ(メタ)アクリレート、エリスリトールトリ(メタ)アクリレート、エリスリトールテトラ(メタ)アクリレート等のエリスリトール(メタ)アクリレート;ジエリスリトールジ(メタ)アクリレート、ジエリスリトールトリ(メタ)アクリレート、ジエリスリトールテトラ(メタ)アクリレート等のジエリスリトール(メタ)アクリレート;エチレンオキシド変性リン酸ジ(メタ)アクリレート、トリス(アクリロキシエチル)イソシアヌレート、イソシアヌレートジ(メタ)アクリレート、ウレタン(メタ)アクリレート類。
液状(メタ)アクリレートは、1種を単独で用いても、2種以上を併用してもよい。2種以上の場合、異種の液状(メタ)アクリレートは相溶するのが好ましい。
なお、他の液状成分とは、25℃において液体であり、本組成物の他の構成成分のいずれとも反応しない、粘度が10000mPa・s以下の液状成分であり、具体的には液状(メタ)アクリレート以外の液状ポリマーや、各成分を溶解又は分散する作用を有する液状分散媒である。液状分散媒の具体例としては、水、セロソルブ系溶媒、エステル系溶媒、プロピレングリコール系溶媒、ケトン系溶媒、アルコール系溶媒、アミド系溶媒、芳香族炭化水素系溶媒が挙げられる。
変性芳香族樹脂としては、カルボキシル基含有フェノール樹脂が好ましく、フェノール性水酸基にエピクロロヒドリンを反応させてエポキシ化した多官能フェノール樹脂(例えば、多官能ノボラック型エポキシ樹脂)に、(メタ)アクリル酸を反応させた後、側鎖に存在する水酸基に有機多塩基酸無水物を付加させたカルボキシル基含有フェノール樹脂がより好ましい。有機多塩基酸無水物としては、無水フタル酸、無水マレイン酸、無水コハク酸、無水イタコン酸、無水テトラヒドロフタル酸、無水ヘキサヒドロフタル酸が挙げられる。
かかるカルボキシル基含有フェノール樹脂は、Fポリマー(特に、極性官能基を有するFポリマー)と相互作用しやすいため好ましい。
また、かかる変性芳香族樹脂は、アルカリ現像性が良好であり、目的とする複雑な形状を有する成形物(凸部)を得やすい。
本組成物における変性芳香族樹脂の含有量は、10~60質量%が好ましく、25~50質量%がより好ましい。
本組成物において、変性芳香族樹脂の含有量(割合)はFポリマーの含有量(割合)より多いのが好ましい。この場合、本組成物の取り扱い性、光硬化性及び現像性がより向上する。具体的には、Fポリマーの含有量に対する変性芳香族樹脂の含有量の質量での比は、1~10が好ましく、1~5がより好ましい。
本組成物における、Fパウダー及び変性芳香族樹脂の総含有量は、50質量%以上が好ましく、60質量%以上がより好ましい。総含有量は90質量%以下が好ましい。
本組成物における、Fパウダーの質量に対する、液状(メタ)アクリレートの質量の比は、0.1~100であるのが好ましく、0.5~50であるのがより好ましい。
無機フィラーとしては、酸化物、窒化物、金属単体、合金及びカーボンから構成されるフィラーが挙げられ、ケイ酸塩(酸化ケイ素(シリカ)、ウォラストナイト、タルク、マイカ)、金属酸化物(酸化ベリリウム、酸化セリウム、酸化アルミニウム、ソーダアルミナ、酸化マグネシウム、酸化亜鉛、酸化チタン等)、窒化ホウ素及びメタ珪酸マグネシウム(ステアタイト)のフィラーが好ましく、アルミニウム、マグネシウム、ケイ素、チタン、亜鉛から選択される元素の少なくとも1種を含有する無機酸化物のフィラーがより好ましく、シリカ、酸化チタン、酸化亜鉛、ステアタイト及び窒化ホウ素のフィラーがさらに好ましく、シリカのフィラーが特に好ましい。また、無機フィラーはセラミックスであってもよい。無機フィラーは、1種を用いてもよく、2種以上を混合して用いてもよい。2種以上の無機フィラーを混合して用いる場合、2種のシリカのフィラーを混合して用いてもよく、シリカのフィラーと、金属酸化物のフィラーを混合して用いてもよい。
シリカのフィラーを使用すれば、本組成物から得られる成形物(硬化物)の線膨張係数を充分に低下できる。
無機フィラーがシリカフィラーである場合、無機フィラーにおけるシリカの含有量は、50質量%以上が好ましく、75質量%以上がより好ましい。シリカの含有量は、100質量%以下が好ましい。
無機フィラーの形状は、粒状、針状(繊維状)、板状のいずれであってもよい。無機フィラーの具体的な形状としては、球状、鱗片状、層状、葉片状、杏仁状、柱状、鶏冠状、等軸状、葉状、雲母状、ブロック状、平板状、楔状、ロゼット状、網目状、角柱状が挙げられる。無機フィラーは中空状であってもよく、中空状のフィラーと、非中空状のフィラーとを含んでもよい。
エポキシ化合物としては、エチレングリコールジグリシジルエーテル、プロピレングリコールジグリシジルエーテル、ポリエチレングリコールジグリシジルエーテル、ポリプロピレングリコールジグリシジルエーテル、ポリテトラメチレングリコールジグリシジルエーテル、グリセロールポリグリシジルエーテル、トリメチロールプロパンポリグリシジルエーテル、レゾルシンジグリシジルエーテル、1,6-ヘキサンジオールジグリシジルエーテル、ソルビトールポリグリシジルエーテル、ソルビタンポリグリシジルエーテル、ペンタエリスリトールポリグリシジルエーテル、フタル酸ジグリシジルエステル、テトラヒドロフタル酸ジグリシジルエステル、ヘキサヒドロフタル酸ジグリシジルエステル、ジグリシジル-p-オキシ安息香酸、ダイマー酸グリシジルエステル、テトラグリシジルジアミノジフェニルメタン、トリグリシジル-p-アミノフェノール、トリス(2,3-エポキシプロピル)イソシアヌレート、トリグリシジルトリス(2-ヒドロキシエチル)イソシアヌレートのトリアジン環を有するトリグリシジルイソシアヌレート、等の1分子中に2個以上のエポキシ基を有するエポキシ化合物;
本組成物がエポキシ化合物を含む場合、その含有量は、十分な機械的強度の硬化物を確実に得る点から、変性芳香族樹脂(固形分)100質量部に対して、1~40質量部が好ましい。
本組成物がエポキシ化合物として半固形状エポキシ樹脂を含む場合、本組成物(好適にはネガ型のレジスト組成物)を硬化させた硬化物のガラス転移温度(Tg)が高く、線膨張係数が低くなり、クラック耐性に優れる傾向となる。一方、固形状エポキシ樹脂を含む場合には、硬化物のガラス転移温度が高くなり耐熱性に優れる傾向となり、液状エポキシ樹脂を含む場合には、ドライフィルムの可とう性に優れる傾向となる。
光重合開始剤としては、アルキルフェノン系光重合開始剤、アシルホスフィンオキシド系光重合開始剤、ベンゾイン系光重合開始剤、ベンゾフェノン系光重合開始剤、2,2’-アゾビスイソブチロニトリル、ベンゾイルペルオキシドが挙げられる。
変性芳香族樹脂と熱硬化反応し得る硬化剤としては、アミン、イミダゾール、フェノール、酸無水物、フェノール性水酸基を有する化合物、シアネートエステル基を有する化合物、マレイミド基を有する化合物からなる群から選ばれる少なくとも1種であるのが好ましく、本組成物の安定性と、本組成物から形成される成形物(硬化物)の接着性及び電気特性とを高める観点から、アミン又はイミダゾールであるのがより好ましい。硬化剤は、1種を単独で用いても2種以上を併用してもよい。なお、2種以上を併用する際は、そのいずれかの化合物が硬化剤として、他の化合物が硬化促進剤として作用してもよい。
本組成物の硬化開始温度が、120~200℃となるように、硬化剤を選択するのが好ましい。なお、「硬化開始温度」とは、示差走査熱量測定(DSC)により確認される、得られる組成物を加熱した際の最初の変化点を示す温度である。
界面活性剤は、ノニオン性であるのが好ましい。
界面活性剤の親水部位は、オキシアルキレン基又はアルコール性水酸基を有するのが好ましく、疎水部位は、アセチレン基、ポリシロキサン基、ペルフルオロアルキル基又はペルフルオロアルケニル基を有するのが好ましい。換言すれば、界面活性剤は、アセチレン系界面活性剤、シリコーン系界面活性剤又はフッ素系界面活性剤が好ましい。
他の樹脂としては、芳香族性を有さない、マレイミド樹脂、ウレタン樹脂、ポリイミド、ポリアミック酸、ポリアミドイミド、ポリビニルアセタール樹脂が挙げられる。
他の樹脂としては、マレイミド樹脂、ポリイミド及びポリアミック酸が好ましい。この場合、本組成物から形成される成形物が柔軟性と接着性に優れやすい。
本法2では、Fパウダーと、液状(メタ)アクリレートと、変性芳香族樹脂とを混合して混合物を得て、前記混合物と変性芳香族樹脂のワニスとを混合して、Fポリマーと液状(メタ)アクリレートと変性芳香族樹脂を含む液状組成物を得る。本法2における、予め得る混合物と変性芳香族樹脂のワニスの混合は、前記混合物と変性芳香族樹脂のワニスを一括混合してもよく、前記混合物を変性芳香族樹脂のワニスに逐次混合してもよく、変性芳香族樹脂のワニスに前記混合物を逐次混合してもよい。
なお、本法2において予め混合する変性芳香族樹脂と、変性芳香族樹脂のワニスを構成する変性芳香族樹脂は、異なっていてもよく、同種のものを用いてもよく、同種のものを用いるのが好ましい。
本組成物は、本法1又は本法2にて製造するのが好ましい。
また、混合は、円筒形の撹拌槽と、撹拌槽の内壁面の内側で回転する、複数の孔が形成された円筒部を有する回転部位とを備える撹拌機を用い、回転部位の回転による遠心力によって、本組成物を撹拌槽の内壁面に薄膜円筒状に拡げながら撹拌して行ってもよい。
さらに、本法における混合方法は、上述した混合方法の複数を組み合わせてもよい。
混合方法としては、上記した混合方法と同様の方法が挙げられる。
レジスト組成物は、スクリーン印刷法、バーコート法、ブレードコート法等の塗布方法により、基材の表面に塗布できる。
塗布後、指触乾燥性を得るために、塗膜を乾燥するのが好ましい。この乾燥の条件は、75~95℃で40~70分間とするのが好ましい。
乾燥には、熱風循環式乾燥炉や遠赤外線乾燥炉を使用できる。
乾燥後の塗膜(乾燥被膜)の厚さは、乾燥被膜の現像性が良好になる観点から、10~150μmが好ましく、20~60μmがより好ましい。
露光光源には、ハロゲンランプ、高圧水銀灯、レーザー光、メタルハライドランプ、ブラックランプ、無電極ランプ等を使用できる。なお、露光マスクを使用することなく、レーザー・ダイレクト・イメージング装置により、乾燥被膜にパターンを形成してもよい。
現像液は、スプレー法、浸漬法等により、露光後の乾燥被膜に付与できる。
現像液には、水酸化ナトリウム、水酸化カリウム、炭酸ナトリウム、炭酸カリウム、珪酸ナトリウム等のアルカリを含むアルカリ水溶液を使用するのが好ましい。
本組成物によれば、現像液として希アルカリ水溶液を使用できるので、ダメージが少なく、解像性にも優れる乾燥被膜が得られる。なお、現像後の乾燥被膜は、不要な現像液を除去するために、水洗や酸中和を行うのが好ましい。
多層プリント配線板は、絶縁層を介して積層された複数の回路パターンを有している。絶縁層は、ポリフェニレンエーテル、ポリフェニレンオキシド、シアネートエステル、ポリイミド、フルオロポリマー等で構成される。また、回路パターンは、メッキ等により形成される金属膜で構成されている。
この多層プリント配線板は、その厚さ方向に貫通する貫通孔又は凹没する凹部を有している。貫通孔又は凹部は、ドリル加工、レーザー加工により形成されている。貫通孔又は凹部の内面には、導電膜が形成されており、所定の回路パターン同士が電気的に接続されている。
かかる貫通孔又は凹部に本組成物が充填され、硬化させると、貫通孔又は凹部が穴埋めできる。
本組成物が硬化剤を含有する場合、貫通孔又は凹部に充填された本組成物を加熱により硬化させるのが好ましい。
本組成物の加熱の条件は、80~160℃で30~180分間が好ましい。なお、本組成物の硬化におけるアウトガスを抑制する観点からは、本組成物を仮硬化段階及び本硬化段階の2段階で硬化させるのが好ましい。仮硬化の条件としては、80~110℃で30~90分間が好ましい。本硬化の条件としては、130~160℃で30~180分間が好ましい。本組成物は、硬化時の容積変化率が小さいため、多層プリント配線板の形状安定性の低下を防止できる。
なお、本組成物の仮硬化段階又は硬化段階で、成形物の貫通孔又は凹部からはみ出す不要部分を除去して、平坦化してもよい。その後、多層プリント配線板の表面に、メッキ等により金属膜を形成し、所定のパターンにパターニングして回路パターンを形成してもよい。ここで、多層プリント配線板の表面には、金属膜の形成に先立って、必要に応じて、過マンガン酸カリウム水溶液等による粗化処理を行ってもよい。
かかるドライフィルムは、キャリアフィルム上に、本組成物を塗布、乾燥して、乾燥被膜としての樹脂膜を形成することにより作製できる。ドライフィルムには、必要に応じて、保護フィルムを積層してもよい。
キャリアフィルムとは、ドライフィルムを支持する機能を有するフィルムである。かかるキャリアフィルムとしては、例えば、ポリオレフィンフィルム、ポリエステルフィルム、ポリイミドフィルム、ポリアミドイミドフィルム、ポリテトラフルオロエチレンフィルム、ポリスチレンフィルム、表面処理した紙基材が挙げられる。中でも、耐熱性、機械的強度、取扱性等の観点から、ポリエステルフィルムが好ましい。
キャリアフィルムの表面には、離型処理を施してもよい。
保護フィルムには、例えば、上記キャリアフィルムで挙げたのと同じフィルムや紙基材が用いられ、ポリオレフィンフィルム又はポリエステルフィルムが好ましい。保護フィルムの表面には、離型処理を施してもよい。
まず、ドライフィルムからキャリアフィルム及び保護フィルムのいずれか一方を剥離する。本組成物が硬化剤又は硬化促進剤を含有する場合、次に、回路パターンが形成された回路基板に圧着した後、熱硬化させる。熱硬化には、オーブン、熱プレス機等を使用できる。その後、回路基板の所定の箇所に、レーザー加工又はドリル加工で貫通孔(ビアホール)を形成し、回路パターンを露出させる。これにより、プリント配線板が得られる。なお、回路パターン上に除去しきれず不要成分(スミア)が残留した場合には、デスミア処理を行うのが好ましい。
キャリアフィルム及び保護フィルムの他方は、所定の段階で、ドライフィルムから剥離される。なお、回路パターン同士の電気的な接続には、貫通孔の内面に形成された導電膜、貫通孔内に収納されたピラーやポストを使用できる。
本凸部付き基材における凸部はその高さが低くても崩れにくく、欠陥の少ない高精度のパターンを形成できる。凸部の高さは、500μm以下が好ましく、100μm未満がより好ましい。凸部の高さは、1μm以上が好ましく、10μm以上がより好ましい。
基材には、基材I:基板上に画素電極、スイッチング素子及び配線が形成されたアクティブマトリックス基板、基材II:ポリマーフィルムと金属層とが積層された積層板等を使用できる。
基材Iの場合、凸部は、例えば、画素電極を露出させるようにアクティブマトリックス基板の表面に枠体として設けられる。この場合、凸部で区画される空間内に、有機EL層(電子輸送層、発光層、正孔輸送層等)、電気泳動粒子を含有する電気泳動分散液を配置し、共通電極等を備える対向基板をアクティブマトリックス基板に対向配置すれば、表示装置(電子デバイス)を作製できる。
また、本凸部付き基材における凸部は、撥水撥油性に優れ、かつ欠陥が少ないため、有機EL層を形成するインクや電気泳動分散液が凸部に付着しにくく、表示性能に優れる表示装置が得られる。また、凸部は、電気特性(低誘電率性)にも優れるため、表示装置において寄生容量が生じにくく、スイッチング特性の低下も防止できる。
支持層は、耐熱性樹脂フィルム、繊維強化樹脂板の前駆体であるプリプレグ、耐熱性樹脂層を有するフィルム、プリプレグ層を有するフィルムで構成できる。
なお、プリプレグは、強化繊維(ガラス繊維、炭素繊維等)の繊維基材(トウ、織布等)に熱硬化性樹脂又は熱可塑性樹脂を含浸させたシート状の基板である。
ポリマー層は、上記の耐熱性樹脂を含むのが好ましく、Fポリマーを含むのがより好ましい。かかる場合、基材が低誘電正接性に優れやすく、本凸部と基材とが強固に接着しやすい。
Fポリマーを含むポリマー層は、Fパウダーと液状分散媒とを含む分散液を基材に塗布、加熱して得てもよい。この場合、基材を剥離すればFポリマーを含む単層フィルムが得られ、基材として上記支持層を構成するフィルムを使用し、基材を剥離しなければ、積層フィルムが得られる。
基材IIとしての積層板は、ポリマーフィルムと金属箔とを熱圧着して作製できる。
金属箔の材質としては、銅、銅合金、ステンレス鋼、ニッケル、ニッケル合金(42合金も含む。)、アルミニウム、アルミニウム合金、チタン、チタン合金等が挙げられる。
金属箔は、銅箔が好ましく、圧延銅箔又は電解銅箔がより好ましい。
例えば、本組成物は、上記実施形態の構成において、他の任意の構成を追加してもよいし、同様の機能を発揮する任意の構成と置換されていてよい。また、本組成物の製造方法は、上記実施形態の構成において、他の任意の工程を追加で有してもよいし、同様の作用を生じる任意の工程と置換されていてよい。
1.各成分の詳細
[Fパウダー]
Fパウダー1:TFE単位、NAH単位及びPPVE単位を、この順に97.9モル%、0.1モル%、2.0モル%含み、カルボニル基含有基を主鎖炭素数1×106個あたり1000個有するFポリマー1(溶融温度:300℃)からなるパウダー(D50:2.1μm、比表面積:2.5m2/g)
[変性芳香族樹脂のワニス]
ワニス1:エポキシ化した多官能フェノール樹脂にアクリル酸を反応させ、さらに水酸基にフタル酸無水物を付加させて得られる、アクリル変性されたカルボキシル基含有フェノール樹脂(変性芳香族樹脂1、酸価:80mgKOH/g)のワニス(溶媒:トルエン)
[液状の(メタ)アクリレート]
アクリレート1:トリエチレングリコールジアクリレート(粘度:9mPa・s)
[無機フィラー]
無機フィラー1:水酸化アルミニウムフィラー
[エポキシ化合物]
エポキシ化合物1:ビフェニル型エポキシ樹脂
[硬化剤]
硬化剤1:メラミン
[例1-1]
プラネタリーミキサーに、Fパウダー1とアクリレート1を投入し、混練して、Fパウダー1(40質量部)及びアクリレート1(20質量部)を含む混合物1を得た。
続いて、混合物1に、ワニス1を複数回に分けて添加しつつ、プラネタリーミキサーにて混練し、Fパウダー1(40質量部)、変性芳香族樹脂1(20質量部)、アクリレート1(20質量部)、トルエンを含む液状組成物1Aを得た。なお、液状組成物1Aにおけるトルエンの割合は、10質量%未満となるように調整した。
さらに、液状組成物1Aとワニス1と無機フィラー1とエポキシ化合物1と硬化剤1とを、プラネタリーミキサーに投入し混合して、Fパウダー1(40質量部)、変性芳香族樹脂1(80質量部)、アクリレート1(20質量部)、無機フィラー1(5質量部)、エポキシ化合物1(15質量部)及び硬化剤1(2質量部)を含む液状組成物1Bを得た。なお、液状組成物1Bにおけるトルエンの割合は、10質量%未満となるように調整した。液状組成物1Bは、25℃にて30日保管した後も凝集物が視認されず、分散性に優れていた。
アクリレート1をメチルメタクリレートに変更する以外は、例1-1の液状組成物1Aを調製したのと同様にして、Fパウダー1(40質量部)、変性芳香族樹脂1(20質量部)、メチルメタクリレート(20質量部)、トルエンを含む液状組成物2Aを得た。
さらに、液状組成物2Aとワニス1と無機フィラー1とエポキシ化合物1と硬化剤1とを、プラネタリーミキサーに投入し混合して、Fパウダー1(40質量部)、変性芳香族樹脂1(80質量部)、メチルメタクリレート(20質量部)、無機フィラー1(5質量部)、エポキシ化合物1(15質量部)及び硬化剤1(2質量部)を含む液状組成物2Bを得た。なお、液状組成物2Bにおけるトルエンの割合は、10質量%未満となるように調整した。液状組成物2Bは、25℃にて30日保管すると2層分離しており、再分散も困難であった。
[例2-1]
Fポリマー1のフィルムと電解銅箔(福田金属箔粉工業社製、「CF-T49A-DS-HD2」)との積層体において、電解銅箔のフィルムと反対側の表面に、液状組成物1Bを塗布して、積層体上に塗膜を形成した。この塗膜を80℃で10分間乾燥して液状組成物1Bから形成された層(厚さ:50μm)を得た。
次に、所定パターンを開口部に有する露光マスクを使用して、紫外線(積算光量:150mJ/cm2)を、この層側に照射した。次に、紫外線照射後の層を1.0質量%の炭酸ナトリウム水溶液で現像して、凸部を形成した。
この凸部を光学顕微鏡で確認した結果、凸部からの粒子やフィラーの脱落は確認されなかった。また、凸部の鉛筆硬度は4Hであり、ワニス1のみから形成した凸部の鉛筆硬度と同等であった。
なお、紫外線照射後の層を単独回収したフィルムに関して、SPDR(スプリットポスト誘電体共振器)及びネットワークアナライザーを使用して、10MHzにおける電気特性を測定した結果、フィルムの誘電率3以下、誘電正接は0.05以下であり、優れた電気特性を示した。
液状組成物1Bを液状組成物2Bに変更する以外は、例1-3と同様にして、Fポリマー1のフィルムと電解銅箔との積層体の表面に液状組成物2Bを塗布し、積層体上に液状組成物2Bから形成された層を形成した。例1-3と同様にして、この層を露光処理し、凸部の形成を試みたが、凸部からの粒子やフィラーの脱落が確認され、良好な形状の凸部は形成できなかった。
Claims (15)
- カルボニル基含有基又は水酸基含有基を有するテトラフルオロエチレン系ポリマーのパウダーと、多官能(メタ)アクリレート及び水酸基若しくはオキシアルキレン基を有するモノ(メタ)アクリレートからなる群から選ばれる少なくとも1種の、粘度が10000mPa・s未満である液状(メタ)アクリレートと、(メタ)アクリル変性されたカルボキシル基含有芳香族樹脂とを含有する、液状組成物。
- 前記液状(メタ)アクリレート以外の他の液状成分を含有しないか、又は30質量%以下の割合で前記他の液状成分を含有する、請求項1に記載の液状組成物。
- 前記液状(メタ)アクリレートが、グリコール(メタ)アクリレート、アルキレングリコール(メタ)アクリレート、グリセロール(メタ)アクリレート、トリメチロールプロパン(メタ)アクリレート、ジトリメチロールプロパン(メタ)アクリレート、ペンタエリスリトール(メタ)アクリレート、ジペンタエリスリトール(メタ)アクリレート、エリスリトール(メタ)アクリレート、及びジエリスリトール(メタ)アクリレートからなる群から選ばれる少なくとも1種の多官能(メタ)アクリレートである、請求項1又は2に記載の液状組成物。
- 前記テトラフルオロエチレン系ポリマーが、フッ素原子含有量が70質量%以上であるテトラフルオロエチレン系ポリマーである、請求項1~3のいずれか1項に記載の液状組成物。
- 前記パウダーの平均粒子径(体積基準累積50%径)が、0.1~25μmである、請求項1~4のいずれか1項に記載の液状組成物。
- 前記パウダーの比表面積が1~25m2/gである、請求項1~5のいずれか1項に記載の液状組成物。
- さらに、無機フィラーを含む、請求項1~6のいずれか1項に記載の液状組成物。
- さらに、エポキシ化合物を含む、請求項1~7のいずれか1項に記載の液状組成物。
- さらに、硬化剤を含む、請求項1~8のいずれか1項に記載の液状組成物。
- ネガ型のレジスト組成物に用いられる、請求項1~9のいずれか1項に記載の液状組成物。
- カルボニル基含有基又は水酸基含有基を有するテトラフルオロエチレン系ポリマーのパウダーと、多官能(メタ)アクリレート及び水酸基若しくはオキシアルキレン基を有するモノ(メタ)アクリレートからなる群から選ばれる、少なくとも1種の粘度が10000mPa・s未満である液状(メタ)アクリレートとを混合して混合物を得て、前記混合物と(メタ)アクリル変性されたカルボキシル基含有芳香族樹脂のワニスとを混合して、前記テトラフルオロエチレン系ポリマーと前記液状(メタ)アクリレートと前記(メタ)アクリル変性されたカルボキシル基含有芳香族樹脂を含む液状組成物を得る、液状組成物の製造方法。
- カルボニル基含有基又は水酸基含有基を有するテトラフルオロエチレン系ポリマーのパウダーと、多官能(メタ)アクリレート及び水酸基若しくはオキシアルキレン基を有するモノ(メタ)アクリレートからなる群から選ばれる、少なくとも1種の粘度が10000mPa・s未満である液状(メタ)アクリレートと、(メタ)アクリル変性されたカルボキシル基含有芳香族樹脂とを混合して混合物を得て、前記混合物と(メタ)アクリル変性されたカルボキシル基含有芳香族樹脂のワニスとを混合して、前記テトラフルオロエチレン系ポリマーと前記液状(メタ)アクリレートと前記(メタ)アクリル変性されたカルボキシル基含有芳香族樹脂を含む液状組成物を得る、液状組成物の製造方法。
- 基材と、前記基材の表面に設けられ、請求項1~11のいずれか1項に記載の液状組成物から形成された所定のパターンを有する凸部とを有する、凸部付き基材。
- 前記凸部の高さが、500μm以下である、請求項13に記載の凸部付き基材。
- 前記基材が、テトラフルオロエチレン系ポリマーを含むポリマー層と、前記ポリマー層の表面に設けられた金属層とを備え、前記金属層の前記ポリマー層と反対側の表面に前記凸部を有する、請求項13又は14に記載の凸部付き基材。
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JP2013067756A (ja) * | 2011-09-26 | 2013-04-18 | Tamura Seisakusho Co Ltd | 硬化性樹脂組成物並びに硬化性樹脂組成物の被膜を有するフレキシブル基板及び反射シート |
WO2018016644A1 (ja) * | 2016-07-22 | 2018-01-25 | 旭硝子株式会社 | 液状組成物、並びに該液状組成物を使用した、フィルムおよび積層体の製造方法 |
JP2019090923A (ja) * | 2017-11-15 | 2019-06-13 | オキツモ株式会社 | フッ素樹脂粒子含有のレジストインキ組成物 |
JP2019179200A (ja) * | 2018-03-30 | 2019-10-17 | 太陽インキ製造株式会社 | 硬化性樹脂組成物、ドライフィルム、硬化物およびプリント配線板 |
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JP2013067756A (ja) * | 2011-09-26 | 2013-04-18 | Tamura Seisakusho Co Ltd | 硬化性樹脂組成物並びに硬化性樹脂組成物の被膜を有するフレキシブル基板及び反射シート |
WO2018016644A1 (ja) * | 2016-07-22 | 2018-01-25 | 旭硝子株式会社 | 液状組成物、並びに該液状組成物を使用した、フィルムおよび積層体の製造方法 |
JP2019090923A (ja) * | 2017-11-15 | 2019-06-13 | オキツモ株式会社 | フッ素樹脂粒子含有のレジストインキ組成物 |
JP2019179200A (ja) * | 2018-03-30 | 2019-10-17 | 太陽インキ製造株式会社 | 硬化性樹脂組成物、ドライフィルム、硬化物およびプリント配線板 |
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