WO2022149377A1 - 積層フィルムおよびその製造方法 - Google Patents
積層フィルムおよびその製造方法 Download PDFInfo
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- WO2022149377A1 WO2022149377A1 PCT/JP2021/044092 JP2021044092W WO2022149377A1 WO 2022149377 A1 WO2022149377 A1 WO 2022149377A1 JP 2021044092 W JP2021044092 W JP 2021044092W WO 2022149377 A1 WO2022149377 A1 WO 2022149377A1
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- resin
- resin layer
- laminated film
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- film
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- UHESRSKEBRADOO-UHFFFAOYSA-N ethyl carbamate;prop-2-enoic acid Chemical compound OC(=O)C=C.CCOC(N)=O UHESRSKEBRADOO-UHFFFAOYSA-N 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 150000002222 fluorine compounds Chemical class 0.000 description 1
- XUCNUKMRBVNAPB-UHFFFAOYSA-N fluoroethene Chemical compound FC=C XUCNUKMRBVNAPB-UHFFFAOYSA-N 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 150000002334 glycols Chemical class 0.000 description 1
- 229920000578 graft copolymer Polymers 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000007756 gravure coating Methods 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- SXCBDZAEHILGLM-UHFFFAOYSA-N heptane-1,7-diol Chemical compound OCCCCCCCO SXCBDZAEHILGLM-UHFFFAOYSA-N 0.000 description 1
- TZMQHOJDDMFGQX-UHFFFAOYSA-N hexane-1,1,1-triol Chemical compound CCCCCC(O)(O)O TZMQHOJDDMFGQX-UHFFFAOYSA-N 0.000 description 1
- LNCPIMCVTKXXOY-UHFFFAOYSA-N hexyl 2-methylprop-2-enoate Chemical compound CCCCCCOC(=O)C(C)=C LNCPIMCVTKXXOY-UHFFFAOYSA-N 0.000 description 1
- LNMQRPPRQDGUDR-UHFFFAOYSA-N hexyl prop-2-enoate Chemical compound CCCCCCOC(=O)C=C LNMQRPPRQDGUDR-UHFFFAOYSA-N 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000010954 inorganic particle Substances 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- PBOSTUDLECTMNL-UHFFFAOYSA-N lauryl acrylate Chemical compound CCCCCCCCCCCCOC(=O)C=C PBOSTUDLECTMNL-UHFFFAOYSA-N 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- FQPSGWSUVKBHSU-UHFFFAOYSA-N methacrylamide Chemical compound CC(=C)C(N)=O FQPSGWSUVKBHSU-UHFFFAOYSA-N 0.000 description 1
- 125000005397 methacrylic acid ester group Chemical group 0.000 description 1
- 125000005395 methacrylic acid group Chemical group 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- UZKWTJUDCOPSNM-UHFFFAOYSA-N methoxybenzene Substances CCCCOC=C UZKWTJUDCOPSNM-UHFFFAOYSA-N 0.000 description 1
- 125000004184 methoxymethyl group Chemical group [H]C([H])([H])OC([H])([H])* 0.000 description 1
- 229940043265 methyl isobutyl ketone Drugs 0.000 description 1
- XJRBAMWJDBPFIM-UHFFFAOYSA-N methyl vinyl ether Chemical compound COC=C XJRBAMWJDBPFIM-UHFFFAOYSA-N 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- OMNKZBIFPJNNIO-UHFFFAOYSA-N n-(2-methyl-4-oxopentan-2-yl)prop-2-enamide Chemical compound CC(=O)CC(C)(C)NC(=O)C=C OMNKZBIFPJNNIO-UHFFFAOYSA-N 0.000 description 1
- DNTMQTKDNSEIFO-UHFFFAOYSA-N n-(hydroxymethyl)-2-methylprop-2-enamide Chemical compound CC(=C)C(=O)NCO DNTMQTKDNSEIFO-UHFFFAOYSA-N 0.000 description 1
- ABMFBCRYHDZLRD-UHFFFAOYSA-N naphthalene-1,4-dicarboxylic acid Chemical compound C1=CC=C2C(C(=O)O)=CC=C(C(O)=O)C2=C1 ABMFBCRYHDZLRD-UHFFFAOYSA-N 0.000 description 1
- RXOHFPCZGPKIRD-UHFFFAOYSA-N naphthalene-2,6-dicarboxylic acid Chemical compound C1=C(C(O)=O)C=CC2=CC(C(=O)O)=CC=C21 RXOHFPCZGPKIRD-UHFFFAOYSA-N 0.000 description 1
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 238000010606 normalization Methods 0.000 description 1
- 239000002667 nucleating agent Substances 0.000 description 1
- HMZGPNHSPWNGEP-UHFFFAOYSA-N octadecyl 2-methylprop-2-enoate Chemical compound CCCCCCCCCCCCCCCCCCOC(=O)C(C)=C HMZGPNHSPWNGEP-UHFFFAOYSA-N 0.000 description 1
- OEIJHBUUFURJLI-UHFFFAOYSA-N octane-1,8-diol Chemical compound OCCCCCCCCO OEIJHBUUFURJLI-UHFFFAOYSA-N 0.000 description 1
- 239000011146 organic particle Substances 0.000 description 1
- 239000005022 packaging material Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920000747 poly(lactic acid) Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001230 polyarylate Polymers 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 229920000223 polyglycerol Polymers 0.000 description 1
- 239000004633 polyglycolic acid Substances 0.000 description 1
- 239000004626 polylactic acid Substances 0.000 description 1
- 229920000306 polymethylpentene Polymers 0.000 description 1
- 239000011116 polymethylpentene Substances 0.000 description 1
- 229920002503 polyoxyethylene-polyoxypropylene Polymers 0.000 description 1
- 229920000069 polyphenylene sulfide Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- BOQSSGDQNWEFSX-UHFFFAOYSA-N propan-2-yl 2-methylprop-2-enoate Chemical compound CC(C)OC(=O)C(C)=C BOQSSGDQNWEFSX-UHFFFAOYSA-N 0.000 description 1
- LYBIZMNPXTXVMV-UHFFFAOYSA-N propan-2-yl prop-2-enoate Chemical compound CC(C)OC(=O)C=C LYBIZMNPXTXVMV-UHFFFAOYSA-N 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
- 238000001004 secondary ion mass spectrometry Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- YXTFRJVQOWZDPP-UHFFFAOYSA-M sodium;3,5-dicarboxybenzenesulfonate Chemical compound [Na+].OC(=O)C1=CC(C(O)=O)=CC(S([O-])(=O)=O)=C1 YXTFRJVQOWZDPP-UHFFFAOYSA-M 0.000 description 1
- 239000000600 sorbitol Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000010557 suspension polymerization reaction Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 150000003498 tellurium compounds Chemical class 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- 229920006305 unsaturated polyester Polymers 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000004736 wide-angle X-ray diffraction Methods 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/043—Improving the adhesiveness of the coatings per se, e.g. forming primers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/042—Coating with two or more layers, where at least one layer of a composition contains a polymer binder
- C08J7/0423—Coating with two or more layers, where at least one layer of a composition contains a polymer binder with at least one layer of inorganic material and at least one layer of a composition containing a polymer binder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/62218—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products obtaining ceramic films, e.g. by using temporary supports
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/12—Chemical modification
- C08J7/16—Chemical modification with polymerisable compounds
- C08J7/18—Chemical modification with polymerisable compounds using wave energy or particle radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
- B29C55/04—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets uniaxial, e.g. oblique
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/02—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets
- B29C55/10—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial
- B29C55/12—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of plates or sheets multiaxial biaxial
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2433/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
Definitions
- Biaxially stretched polyester film has excellent mechanical properties, electrical properties, dimensional stability, transparency, chemical resistance, etc., so it can be used as a base film in many applications such as magnetic recording materials and packaging materials. Widely used.
- a film having excellent releasability as a protective film for an adhesive layer in an adhesive product and a carrier film in a processing process for various industrial products.
- a film having excellent mold release properties a film having a layer containing a silicone compound (hereinafter referred to as a resin layer) as a mold release agent on the surface is most commonly used from the viewpoint of industrial productivity and heat resistance. (See, for example, Patent Document 1).
- a silicone compound is contained in the resin layer, the surface free energy of the resin layer becomes low, so that the coatability of the adherend may be poor.
- the long-chain alkyl group-containing resin has strong hydrophobicity and its aqueous dispersion is unstable and easily aggregates, the resin layer tends to contain aggregates, and the coarse protrusions due to the aggregates tend to be contained. As a result of being transferred to the layer provided by coating, the surface roughness of the layer provided by coating may be increased.
- the slurry may float due to the thermal expansion of the resin layer when exposed to high temperatures in the drying process, which may interfere with the processing in the subsequent process. It turned out that there was.
- floating refers to a phenomenon in which the applied ceramic slurry is partially peeled off.
- the laminated film of the present invention has any of the following configurations. That is, A laminated film having a resin layer on at least one side of a resin base material, wherein the resin layer is on at least one surface layer, and the X-ray absorption fine structure (XAFS) spectrum measured by the partial electron yield method with respect to the resin layer surface.
- XAFS X-ray absorption fine structure
- the laminated film of the present invention relates to the X-ray absorption near edge structure (XANES) spectrum of the K absorption edge of carbon among the X-ray absorption fine structure (XAFS) spectra measured by the partial electron yield method with respect to the resin layer surface.
- XANES X-ray absorption near edge structure
- XAFS X-ray absorption fine structure
- the intensity (P) ratio (P / K) [ ⁇ ] is preferably less than 0.01.
- the film thickness of the resin layer is preferably larger than 10 nm and less than 200 nm.
- the resin base material is a polyester film.
- the laminated film of the present invention is preferably used for applications in which a ceramic slurry is applied to the surface of the resin layer, solidified, and then peeled off.
- the first aspect of the laminated film of the present invention is a laminated film having a resin layer on at least one side of a resin base material, the resin layer is on at least one surface layer, and XANES at the K absorption end of carbon on the resin layer surface.
- the spectrum when the angle formed by the incident X-ray and the resin layer surface is ⁇ and the spectral intensity of 293.5 eV obtained by the partial electron yield method is I ( ⁇ ), I (15 °) when ⁇ is 15 ° and 90 °. ), I (90 °) is a laminated film satisfying I (15 °) ⁇ I (90 °) ⁇ 0.1.
- the XAFS spectrum is a measurement of the amount of X-ray absorption of a sample while changing the energy of the X-ray to be irradiated. Since the absorption energy of each element differs depending on the element, the bond state (valence) and arrangement of the elements are measured by this measurement. Information such as the position environment (interatomic distance, number of coordinates) can be obtained. In the present invention, attention is paid to the K absorption edge of carbon near 284.2 eV, specifically, the peak of 293.5 eV attributed to the ⁇ * transition of the CC bond.
- X-rays are linearly polarized, and the electric field vector is perpendicular to the X-rays and is generated in the horizontal plane.
- the orientation of the CC bond is determined by performing an angular decomposition measurement on the peak of 293.5 eV derived from the CC bond. Sex evaluation is possible.
- the angle formed by the incident X-ray and the measurement sample surface is ⁇
- the X-ray absorption spectrum intensity at 293.5 eV is I ( ⁇ ).
- the total electron yield method is that when a substance is irradiated with soft X-rays with higher energy than the bound energy of the inner shell orbit, the electrons in the inner shell orbit are emitted from the surface of the material as photoelectrons due to the photoelectric effect. It is a method of detecting electrons, and the method of selecting and detecting electrons with a certain kinetic energy or more is called the partial electron yield method.
- the partial electron yield method is a more surface-sensitive method than the full-electron yield method because the electron energy emitted from the surface is sorted by an electron spectroscope and electrons with a long average free stroke and low kinetic energy in the substance are not detected. Analysis of a sample surface of several nm is possible.
- the resin layer of the first aspect of the laminated film of the present invention is I (15 °) ⁇ I (90 °) ⁇ 0.1 means that the long chain alkyl groups of the resin layer have a high degree of vertical orientation. This means that the components of the surface layer are less likely to permeate into the resin layer, and the peelability of the surface layer can be improved.
- the range of (15 °) -I (90 °) is preferably I (15 °) -I (90 °) ⁇ 0.2, more preferably I (15 °) -I (90 °) ⁇ 0.4. Is.
- I (15 °) ⁇ I (90 °) ⁇ 0.1 the long-chain alkyl group of the resin layer is not oriented in the vertical direction, so that when the surface layer is applied on the resin layer, the surface layer is formed. The component of is permeated into the resin layer, and as a result of an anchor effect being generated between the resin layer and the surface layer, the peelability of the surface layer becomes poor.
- the upper limit of I (15 °) -I (90 °) is not particularly limited, but is about 1.0.
- Examples of the method for controlling the resin layer of the laminated film of the present invention to I (15 °) ⁇ I (90 °) ⁇ 0.1 include components constituting the resin layer, a coating composition, and a manufacturing method described later. Can be done. Each preferable range will be described later.
- a second aspect of the laminated film of the present invention is a laminated film having a resin layer on at least one side of a resin substrate, having a tape peeling force of 3.0 N / 19 mm or less, and by an atomic force microscope (AFM).
- the domain diameter observed in the elastic modulus image is 500 nm or less.
- the second aspect of the laminated film of the present invention is that the tape peeling force is 3.0 N / 19 mm or less and the elasticity due to AFM. It is necessary that the domain diameter observed in the ratio image is 500 nm or less.
- the tape peeling force in the second aspect of the laminated film of the present invention is preferably 2.5 N / 19 mm or less, more preferably 2.0 N / 19 mm or less.
- the lower limit of the tape peeling force is not particularly limited, but is preferably 0.01 N / 19 mm from the viewpoint of suppressing the film peeling of the surface layer provided in the resin layer in the roll transport process.
- the tape peeling force represents the interaction between the resin layer and the surface layer, and if the interaction between the resin layer and the surface layer is reduced, the peeling force with the surface layer can be lowered.
- the tape peeling force exceeds 3.0 N / 19 mm, the surface layer may not be peeled from the resin layer in the step of peeling the surface layer, and the film may be broken to reduce the yield.
- the tape peeling force is defined as described below.
- an acrylic polyester adhesive tape (Nitto Denko Corporation, Nitto 31B tape, 19 mm width) is attached onto the resin layer of the laminated film of the present invention, and a 2 kgf roller is reciprocated once from above.
- the laminated film to which the tape was attached was allowed to stand in an environment of 25 ° C. and 65% RH for 24 hours, and then the peeling angle was 180 ° using the universal testing machine “Autograph AG-1S” manufactured by Shimadzu Corporation.
- the peeling load when peeling at a tensile speed of 300 mm / min was taken as the tape peeling force. A specific method for measuring the tape peeling force will be described later.
- the laminated film of the present invention can obtain a laminated film having both light peelability of the surface layer and the resin layer and suppression of floating at high temperature. Can be done. The reason is considered to be as follows.
- the domain diameter is preferably 250 nm or less, more preferably 100 nm or less.
- the amount of the cross-linking agent of the domain is relatively small, so that the components of the surface layer permeate into the resin layer, which causes an anchor effect and causes heavy peeling, or in a high temperature environment.
- the thermal expansion of the film may cause peeling or floating.
- the lower limit of the domain diameter is not particularly limited, but is about 10 nm.
- the components constituting the resin layer and the coating composition described later are used. Items and manufacturing methods can be mentioned. Each preferable range will be described later.
- thermosetting resin a phenol resin, an epoxy resin, a urea resin, a melamine resin, an unsaturated polyester, a polyurethane, a polyimide, a silicone resin and the like can be used.
- Polyester is particularly preferable from the viewpoint of mechanical properties and moldability.
- the resin base material contains polyester as a main component (hereinafter, the resin base material containing polyester as a main component may be referred to as a polyester film).
- the main component means that it is the most abundant component among the components constituting the resin base material.
- the polyester film is preferably biaxially oriented.
- the biaxially oriented polyester film is generally a polyester film in an unstretched state, which is stretched about 2.5 to 5 times in the longitudinal direction and the width direction perpendicular to the longitudinal direction, respectively, and then heat-treated to complete the crystal orientation. This is a film that shows a biaxial orientation pattern by wide-angle X-ray diffraction.
- a biaxially oriented polyester film is preferable from the viewpoint of thermal stability of the laminated film, particularly dimensional stability, mechanical strength and flatness.
- the resin layer of the laminated film of the present invention has an angle formed by the incident X-ray and the resin layer surface with respect to the X-ray absorption near edge structure (XANES) spectrum of the K absorption edge of carbon in the XAFS spectrum measured by the partial electron yield method.
- XANES X-ray absorption near edge structure
- the resin layer of the laminated film of the present invention is selected from epoxy resin, oxazoline compound, carbodiimide compound, polyester resin, acrylic resin, and urethane resin as long as the coating property and mold release property are not impaired. It may contain at least one kind of resin or compound (B). Details are described in the section of paint composition.
- At least one resin or compound selected from the release agent (A) and an epoxy resin, an oxazoline compound, a carbodiimide compound, a melamine resin, a polyester resin, an acrylic resin, and a urethane resin (The compatibility of B) is improved, and the release agent (A) can be uniformly dispersed in the resin layer.
- a method using a mold release agent (A) having a molecular structure compatible with at least one resin selected from urethane resins or the compound (B) can be used.
- the functional group has an imino group, a methylol group, or an alkoxymethyl group such as a methoxymethyl group or a butoxymethyl group in one molecule, and is an imino-based methylated melamine resin, a methylol-based melamine resin, or a methylol-based group.
- aromatic dicarboxylic acids can be used as the dicarboxylic acid that is the raw material of the polyester resin.
- aromatic dicarboxylic acids include terephthalic acid, isophthalic acid, orthophthalic acid, phthalic acid, 2,5-dimethylterephthalic acid, 1,4-naphthalenedicarboxylic acid, biphenyldicarboxylic acid, 2,6-naphthalenedicarboxylic acid, 1,2.
- -Bisphenoxyetane-p, p'-dicarboxylic acid, phenylindandicarboxylic acid and the like can be used.
- the acrylic resin is not particularly limited, but one composed of alkyl methacrylate and / or alkyl acrylate is preferable.
- a particularly preferable application of the laminated film of the present invention is a process film for a process of applying a ceramic slurry to the surface of a resin layer and peeling off the surface layer obtained by solidifying the ceramic slurry.
- the ceramic slurry is composed of a ceramic, a binder resin, and a solvent.
- the solvent of the ceramic slurry may be water or an organic solvent.
- an organic solvent toluene, ethanol, methyl ethyl ketone, isopropyl alcohol, ⁇ -butyl lactone and the like can be used. These may be used alone or in combination of two or more.
- a plasticizer, a dispersant, an antistatic agent, a surfactant and the like may be added to the ceramic slurry, if necessary.
- the offline coating method is a method of applying a coating composition to a polyester film in a process different from the process of forming the polyester film.
- the polyester film to be applied may be an unstretched polyester film, a uniaxially stretched polyester film, or a biaxially stretched polyester film.
- a laminated film by an in-line coating method.
- the orientation of the resin layer is achieved. Can be adjusted to I (15 °) ⁇ I (90 °) ⁇ 0.1.
- the cross-linking reaction of the coating film is also promoted, so that the surface elastic modulus by AFM can be increased.
- a coating composition containing a mold release agent is applied to at least one surface of the polyester film before the crystal orientation is completed, then stretched in at least one axial direction, and then heat-treated to obtain the crystal orientation of the polyester film. It is preferably manufactured by the manufacturing method to be completed.
- a very small amount of the coating composition permeates the polyester film, so that the adhesion between the resin layer and the thermoplastic resin film can be imparted. As a result, excellent peeling force can be maintained.
- the resin layer is provided on the polyester film by the usual off-coating method, the highly hydrophobic resin layer has poor adhesion to the film, so that the resin layer is scraped when the film roll is rewound. Problems such as deterioration of peeling force may occur.
- any known application method for example, a bar coating method, a reverse coating method, a gravure coating method, a die coating method, a blade coating method, or the like can be used.
- the aqueous solvent is soluble in water or water and alcohols such as methanol, ethanol, isopropyl alcohol and butanol, ketones such as acetone and methyl ethyl ketone, and glycols such as ethylene glycol, diethylene glycol and propylene glycol.
- alcohols such as methanol, ethanol, isopropyl alcohol and butanol
- ketones such as acetone and methyl ethyl ketone
- glycols such as ethylene glycol, diethylene glycol and propylene glycol.
- Drying can be carried out in the temperature range of 80-130 ° C. to complete the removal of the solvent in the coating composition.
- the drying temperature to a temperature higher than the melting point of the release agent, the release agent is stretched in a molten state, so that the release agent dispersibility in the resin layer is improved and there is no thickness unevenness.
- a uniform resin layer can be formed.
- a relaxation treatment of 3 to 15% may be performed in the width direction or the longitudinal direction, if necessary.
- a method of applying a coating composition to a film (B film) uniaxially stretched in the longitudinal direction, then stretching in the width direction, and heat-treating is excellent. This is because the number of stretching steps is one less than that of the method of biaxial stretching after coating on an unstretched film, so that defects and cracks in the resin layer are less likely to occur due to stretching, and a resin layer having excellent smoothness can be formed. ..
- the method for measuring the characteristics and the method for evaluating the effect in the present invention are as follows.
- the longest axis lengths were then measured for all domains in the image and the average of the top 5 largest sizes was measured. Further, the measurement range was arbitrarily selected and the measurement was performed 10 times, and the average value of a total of 8 times excluding the maximum value and the minimum value was taken as the domain diameter.
- the in-plane average value was used from the elastic modulus image obtained under the above measurement conditions. The measurement was performed 10 times by selecting an arbitrary place, and the average value of a total of 8 times excluding the maximum value and the minimum value was adopted as the surface elastic modulus.
- the temperature was lowered to ⁇ 50 ° C. under the condition of 20 ° C./min, and the peak temperature of the curve obtained at the time of this temperature lowering was measured.
- the average value obtained by performing this measurement three times was defined as Tc.
- the beak temperature having the largest absolute value of the amount of heat (unit: mW) on the vertical axis of the DSC chart is defined as Tc.
- HSP distance A sample of 50 mg was placed in a 6 mL glass screw bottle, 1 mL of each of various solvents was added, and the entire sample was immersed in the test solvent. The sample was allowed to stand at the treatment temperature for 6 hours, and the dissolved state of the sample was visually evaluated to one of the following criteria of [I] and [II], and the HSP value was calculated using the HSP calculation software. [I]: Neither swelling nor dissolution. [II]: Swelling or dissolving.
- the HSP value of each sample is calculated by dissolving or dispersing the target sample in a solvent having a known HSP value and evaluating the solubility or dispersibility in a specific solvent.
- the solubility and dispersibility are evaluated by visually determining whether or not the target composition is dissolved in the solvent and whether or not the target composition is dispersed, respectively, based on the above criteria. This is done for multiple solvents.
- the obtained solubility or dispersibility evaluation results are plotted in a three-dimensional space (HSP space) consisting of the dispersion term ⁇ d, the polarity term ⁇ p, and the hydrogen bond term ⁇ h of HSP.
- PVB coatability The coatability of polyvinyl butyral (PVB) was evaluated as an index of the processability of the surface layer. After applying the PVB solution mixed with the following composition on the resin layer of the laminated film obtained in the examples using an applicator so that the thickness of the PVB layer after drying is 3 ⁇ m, 1 ⁇ m, and 300 nm, respectively. The film was dried in a hot air oven at 100 ° C. for 3 minutes, and the presence or absence of cissing of PVB was evaluated by visual observation according to the following criteria.
- PVB layer was subjected to a 180 ° peeling test at a peeling speed of 300 mm / min using a universal testing machine "Autograph AG-1S" manufactured by Shimadzu Corporation and a 50N load cell. From the graph of peeling force (N) -test time (sec) obtained by the measurement, the average value of the peeling force in 5 to 10 sec was calculated. This measurement was performed 5 times, and the average of 3 times excluding the maximum value and the minimum value was taken as the peeling force of the laminated film, and evaluation was performed according to the following criteria. Those with an evaluation of A or higher were regarded as good, and B was regarded as a level at which there was no practical problem.
- PVB adhesion at high temperature PVB peeling force in high temperature atmosphere
- a PVB layer was provided by the same method as "(9) PVB peeling force", and Shimadzu Co., Ltd. universal testing machine "Autograph AG-1S" was provided in an atmosphere of 120 ° C. A 180 ° peeling test was performed at a peeling speed of 300 mm / min using a 50N load cell.
- Step (I): Methyl methacrylate (MMA) (manufactured by Kanto Chemical Co., Ltd.) in a 25 mL pressure-resistant glass polymerization amplifier, ⁇ , ⁇ '-azobisisobutyronitrile (AIBN) as a polymerization initiator (manufactured by Kanto Chemical Co., Ltd.) , Cumyldithiobenzoate (CDB) as a RAFT agent, and toluene as a solvent were charged in a weight (g) of MMA / CDB / AIBN / toluene 2.92 / 0.03 / 0.007 / 2.27.
- MMA Methyl methacrylate
- AIBN ⁇ , ⁇ '-azobisisobutyronitrile
- CDB Cumyldithiobenzoate
- Step (II): To the reaction solution in the ample, docosyl acrylate, AIBN as a polymerization initiator, and toluene as a solvent are added in a weight (g) of docosyl acrylate / AIBN / toluene 1.37 / 0.003 / 1.3. After performing freeze degassing twice, the ampol was sealed and heated at 100 ° C. for 48 hours.
- long-chain alkyl group-containing resin block copolymer having an alkyl group having 22 carbon atoms (referred to as long-chain alkyl group-containing resin a1)). rice field.
- the obtained long-chain alkyl group-containing resin a1 was emulsified as follows to obtain an aqueous resin emulsion. Put 375 g of water in a homomixer with a capacity of 1 L, add 45 g of polyoxyethylene nonylphenyl ether, 30 g of polyoxyethylene polyoxypropylene glycol, 200 g of long-chain alkyl group-containing resin a1, and 150 g of toluene in that order, and heat to 70 ° C. And stirred uniformly. This mixed solution was transferred to a pressurized homogenizer for emulsification, and then the pressure was further reduced under heating to distill off toluene.
- the mixed liquid 4 was kept heated to 60 ° C. for 2 hours, then cooled to 50 ° C. or lower, and then transferred to a container equipped with a stirrer and a depressurizing facility. 60 parts by mass of 25% ammonia water and 900 parts by mass of pure water were added thereto, and isopropyl alcohol and unreacted monomers were recovered under reduced pressure while heating at 60 ° C., and a long-chain alkyl group dispersed in pure water was collected. A containing resin (having an alkyl group having 18 carbon atoms in the side chain with the methacrylate as the main chain (referred to as the long-chain alkyl group-containing resin a3)) was obtained.
- Reference example 5 It was synthesized by the same manufacturing method as in Reference Example 2 except that icosyl isocyanate was used instead of octadecyl isocyanate, and it has a long-chain alkyl group-containing resin (polymethylene as the main chain and an alkyl group having 20 carbon atoms in the side chain (long). A chain alkyl group-containing resin a5)) was obtained.
- Reference example 7 It was synthesized by the same manufacturing method as in Reference Example 2 except that octyl isocyanate was used instead of octadecyl isocyanate, and it has a long-chain alkyl group-containing resin (polymethylene as the main chain and an alkyl group having 8 carbon atoms in the side chain (long chain). Alkyl group-containing resin a7)) was obtained.
- Step (I): 2-Hydroxyethyl acrylate (HEA) (manufactured by Kanto Chemical Co., Ltd.) in a 25 mL pressure-resistant glass polymerization amplifier, ⁇ , ⁇ '-azobisisobutyronitrile (AIBN) as a polymerization initiator (Kanto Chemical Co., Ltd.) ), Cumyldithiobenzoate (CDB) as a RAFT agent, and toluene as a solvent in a weight (g) of HEA / CDB / AIBN / toluene 0.35 / 0.03 / 0.007 / 2.27.
- HEA 2-Hydroxyethyl acrylate
- AIBN ⁇ , ⁇ '-azobisisobutyronitrile
- CDB Cumyldithiobenzoate
- toluene as a solvent in a weight (g) of HEA / CDB / AIBN /
- Step (II): To the reaction solution in the ample, docosyl acrylate, AIBN as a polymerization initiator, and toluene as a solvent are added in a weight (g) of docosyl acrylate / AIBN / toluene 4.65 / 0.003 / 1.3. After performing freeze degassing twice, the ampol was sealed and heated at 100 ° C. for 48 hours.
- long-chain alkyl group-containing resin block copolymer having an alkyl group having 22 carbon atoms (referred to as long-chain alkyl group-containing resin a8)). rice field.
- the obtained long-chain alkyl group-containing resin a8 was emulsified in the same manner as in Reference Example 1 to obtain an aqueous resin emulsion.
- a long-chain alkyl group-containing resin a9 was obtained in the same manner as in Reference Example 1 except that 4-hydroxybutyl acrylate (HBA) (manufactured by Kanto Chemical Co., Ltd.) was used as the monomer in step I instead of HEA.
- HBA 4-hydroxybutyl acrylate
- the obtained long-chain alkyl group-containing resin a9 was emulsified by the same method as in Reference Example 1 to obtain an aqueous resin emulsion.
- a long-chain alkyl group-containing resin a10 was obtained in the same manner as in Reference Example 1 except that methoxytriethylene glycol methacrylate (manufactured by Kyoeisha Chemical Co., Ltd.) was used as the monomer in step I instead of HEA.
- the obtained long-chain alkyl group-containing resin a10 was emulsified by the same method as in Reference Example 1 to obtain an aqueous resin emulsion.
- a reaction device equipped with a stirrer, a reflux condenser, a thermometer and a dropping funnel was prepared.
- 60 parts by mass of the above mixed solution 5, 200 parts by mass of isopropyl alcohol, and 5 parts by mass of potassium persulfate as a polymerization initiator were charged into a reaction device and heated to 60 ° C. to prepare a mixed solution 6.
- the mixed liquid 6 was kept heated at 60 ° C. for 20 minutes.
- a mixed solution 7 composed of 40 parts by mass of the mixed solution 5, 50 parts by mass of isopropyl alcohol, and 5 parts by mass of potassium persulfate was prepared. Subsequently, the mixed solution 7 was added dropwise to the mixed solution 2 over 2 hours using a dropping funnel to prepare the mixed solution 8.
- the mixed liquid 8 was kept heated to 60 ° C. for 2 hours, then cooled to 50 ° C. or lower, and then transferred to a container equipped with a stirrer and a depressurizing facility. 60 parts by mass of 25% aqueous ammonia and 900 parts by mass of pure water were added thereto, and isopropyl alcohol and unreacted monomers were recovered under reduced pressure while heating at 60 ° C. to obtain an acrylic resin dispersed in pure water. rice field.
- Reference example 16 Synthesized by the same manufacturing method as in Reference Example 1 except that 2-perfluorohexyl ethyl acrylate (synthesized by a known method using 2-perfluorohexyl ethanol and purified by simple distillation) was used instead of docosyl acrylate. , Fluorine-based resin f1 was obtained.
- Reference example 17 Synthesized by the same manufacturing method as in Reference Example 1 except that 2-perfluorodecylethyl acrylate (synthesized by a known method using 2-perfluorodecylethanol and purified by simple distillation) was used instead of docosyl acrylate. , Fluorine-based resin f2 was obtained.
- Example 1 (Example 1) -Paint composition: A fluorine-based surfactant (“Plus Coat” RY-2 manufactured by Mutual Chemical Industry Co., Ltd.) is added to 100 parts by mass of the long-chain alkyl group-containing resin a1 so as to be 0.1 part by mass. The composition was obtained. A fluorine-based surfactant was added to improve the coatability on the polyester film.
- Polyester film PET pellets (extreme viscosity 0.64 dl / g) containing 4% by mass of silica particles (primary particle size 0.3 ⁇ m) and 2% by mass of calcium carbonate particles (primary particle size 0.8 ⁇ m) were sufficiently vacuum-dried. ..
- the PET pellets were supplied to an extruder, melted at 280 ° C., extruded into a sheet from a T-shaped base, wound around a mirror casting drum having a surface temperature of 25 ° C. using an electrostatic application casting method, and solidified by cooling.
- the unstretched film was heated to 90 ° C. and stretched 3.1 times in the longitudinal direction to obtain a uniaxially stretched film (B film).
- B film uniaxially stretched film
- both ends of the uniaxially stretched film coated with the coating composition in the width direction were gripped with clips and guided to the preheating zone.
- the atmospheric temperature of the preheating zone was 90 to 100 ° C., and the solvent of the coating composition was dried.
- it was continuously stretched 3.6 times in the width direction in the stretching zone at 100 ° C., and then heat-treated in the heat treatment zone at 230 to 240 ° C. for 20 seconds to form a resin layer.
- the polyester film was cooled at 55 ° C. for 30 seconds while being subjected to a relaxation treatment of 5% in the width direction at the same temperature to obtain a laminated film in which the crystal orientation of the polyester film was completed.
- the thickness of the polyester film was 50 ⁇ m, and the thickness of the resin layer was 30 nm.
- the characteristics of the laminated film obtained in the examples are shown in Tables 3 to 6.
- Example 2 to 65 A laminated film was obtained in the same manner as in Example 1 except that the coating compositions shown in Tables 1 and 2 and the temperature conditions shown in Tables 3 and 4 were used.
- the resins obtained in Reference Examples 1 to 12 were used for the long-chain alkyl group-containing resins a1 to a12 shown in Tables 1 and 2, Reference Example 13 was used for the acrylic resin, and Reference Example 14 was used for the polyester resin.
- the melamine resin is "Nicarac” (registered trademark) MW-035 (solid content concentration 70% by mass, solvent: water) manufactured by Sanwa Chemical Co., Ltd.
- the oxazoline compound is "Epocross” (registered trademark) manufactured by Nippon Catalyst Co., Ltd. )
- WS-500 solid content concentration 40% by mass, solvent: water
- Comparative Example 2 A silicone-based resin whose coating composition is prepared in Reference Example 15 and which does not substantially contain a long-chain alkyl group-containing resin, and "Nicarac" (registered trademark) MW-035 (solid trademark) manufactured by Sanwa Chemical Co., Ltd. as a melamine resin.
- a laminated film was obtained in the same manner as in Example 1 except that the coating composition shown in Table 2 and the temperature conditions shown in Table 4 were contained, and the component concentration was 70% by mass, solvent: water). Although the PVB peelability was good, the PVB coatability and PVB adhesion at high temperature were poor.
- the coating composition is substantially free of the long-chain alkyl group-containing resin, and the coating composition contains the fluororesin f1 obtained in Reference Example 16 and the acrylic resin obtained in Reference Example 13, and the coating composition shown in Table 2 is shown in Table 2.
- a laminated film was obtained in the same manner as in Example 1 except that the temperature conditions shown in 4 were set. Although the PVB coatability and PVB adhesion at high temperature were good, the PVB peelability was poor.
- Example 4 Except that the long-chain alkyl group-containing resin a1 was designated as the long-chain alkyl group-containing resin a7, the coating composition contained the acrylic resin obtained in Reference Example 13, and the coating composition shown in Table 2 and the temperature conditions shown in Table 4 were used. Obtained a laminated film by the same method as in Example 1. Although the PVB coatability and PVB adhesion at high temperature were good, the PVB peelability was poor.
- the coating composition contains an olefin resin (“Chemipal” (registered trademark) XEP800H manufactured by Mitsui Chemicals Co., Ltd.) and the acrylic resin obtained in Reference Example 13, and is substantially free of the long-chain alkyl group-containing resin.
- a laminated film was obtained in the same manner as in Example 1 except that the coating composition shown in 2 and the temperature conditions shown in Table 4 were used. Although the PVB coatability and PVB adhesion at high temperature were good, the PVB peelability was poor.
- Example 7 "Nicarac” (registered trademark) MW-035 (solid content) manufactured by Sanwa Chemical Co., Ltd. as a silicone-based resin and a melamine resin whose coating composition was adjusted in Reference Example 15 without substantially containing a long-chain alkyl group-containing resin.
- a laminated film was obtained in the same manner as in Example 1 except that the coating composition shown in Table 2 and the temperature conditions shown in Table 4 were contained, and the concentration was 70% by mass, solvent: water). Although the PVB peelability was good, the PVB coatability and PVB adhesion at high temperature were poor.
- the coating composition is substantially free of the long-chain alkyl group-containing resin, and the coating composition contains the fluororesin f1 obtained in Reference Example 17 and the acrylic resin obtained in Reference Example 13, and the coating composition shown in Table 2 is shown in Table 2.
- a laminated film was obtained in the same manner as in Example 1 except that the temperature conditions shown in 4 were set. Although the PVB coatability and PVB adhesion at high temperature were good, the PVB peelability was poor.
- the laminated film of the present invention is excellent in coatability and peelability of a surface layer typified by a ceramic slurry, and also has excellent adhesion at high temperatures, and can be suitably used as a process film for a manufacturing process of electronic parts.
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Abstract
Description
樹脂基材の少なくとも片面に樹脂層を有する積層フィルムであって、前記樹脂層が少なくとも一方の表層にあり、樹脂層面に対し、部分電子収量法によって測定したX線吸収微細構造(XAFS)スペクトルのうち、炭素のK吸収端のX線吸収端近傍構造(XANES)スペクトルについて、入射X線と樹脂層面がなす角をθとし、293.5eVのスペクトル強度をI(θ)としたとき、I(15°)-I(90°)≧0.1を満たす積層フィルム(以下、第一の態様ということがある)、または、
樹脂基材の少なくとも片面に、樹脂層が積層された積層フィルムであり、テープ剥離力が3.0N/19mm以下であり、かつAFMによる弾性率像にて観察されるドメイン径が500nm以下である積層フィルム(以下、第二の態様ということがある)、である。
上記積層フィルムの製造方法であって、樹脂基材の少なくとも一方の面に、離型剤(A)と、エポキシ樹脂、オキサゾリン化合物、カルボジイミド化合物、ポリエステル樹脂、アクリル樹脂、ウレタン樹脂から選ばれる少なくとも1種類の樹脂又は化合物(B)を含有する塗料組成物を塗布し、次いで少なくとも一軸方向に延伸し、その後、150℃以上に加熱し、樹脂層を形成せしめる積層フィルムの製造方法、である。
<樹脂基材>
本発明の積層フィルムにおける、樹脂基材について詳しく説明する。樹脂基材とは、特に限られるものでは無く、樹脂基材を構成する樹脂種は、熱可塑性樹脂、熱硬化性樹脂のいずれでもよく、ホモ樹脂であってもよく、共重合または2種類以上のブレンドであってもよい。成形性が良好という観点からは熱可塑性樹脂が好ましい。
本発明の積層フィルムにおける樹脂層とは、前述の樹脂基材の少なくとも片面に有するものである。樹脂層は、樹脂層上に設けられた粘着テープや、セラミックスラリーから形成される後述する表面層を、積層フィルムから容易に剥離するために必要な層である。
(上記式において、γSは固体の表面張力、γLは液体の表面張力、γSLは固体/液体の界面張力、θは接触角を示す)。
本発明の積層フィルムは樹脂層の上に表面層を形成し、使用されることが好ましい。ここで表面層とは積層フィルムの樹脂層を有する面の上に形成された樹脂、金属、セラミックなどを含む層状の成型体を指す。表面層の作成方法については特に限定されないが、例えば塗布、蒸着、貼合などの方法によって、樹脂層の表面に形成することができる。本明細書において、表面層の作成に溶媒成分を有する塗液を使用する場合、または表面層が反応性の活性部位を反応させて成る硬化層の場合には、未乾燥の状態及び未硬化の状態を含め、表面層と記載する場合がある。本発明の特に好ましい用途における表面層は、セラミックスラリーを塗工する工程を経て形成されるセラミックシートである。
本発明の積層フィルムの樹脂層を形成するための好ましい塗料組成物について記載する。本発明の積層フィルムの樹脂層は離型剤(A)と、エポキシ樹脂、オキサゾリン化合物、カルボジイミド化合物、メラミン樹脂、ポリエステル樹脂、アクリル樹脂、ウレタン樹脂から選ばれる少なくとも1種類の樹脂又は化合物(B)を含有する塗料組成物から形成されることが好ましい。かかる構成とすることで、樹脂層面の炭素のK吸収端のX線吸収端近傍構造(XANES)スペクトルについて、入射X線と樹脂層面がなす角をθとし、部分電子収量法によって得られる293.5eVのスペクトル強度をIθとしたとき、I(15°)-I(90°)≧0.1となるような樹脂層を形成しやすくなる。また、かかる構成とすることで、テープ剥離力が3.0N/19mm以下であり、かつAFMによる弾性率像にて観察されるドメイン径が500nm以下となるような樹脂層を形成しやすくなる。
本発明でいう離型剤(A)とは、塗料組成物に含有することにより、塗布層の表面に離型性(すなわち樹脂の表面自由エネルギーを低下させたり、樹脂層の剥離力を低下させたりする特性)を付与する化合物を示す。本発明において用いることのできる離型剤(A)としては、長鎖アルキル基含有樹脂、オレフィン樹脂、フッ素化合物、ワックス系化合物などが挙げられる。中でも、長鎖アルキル基含有樹脂は、良好な剥離性を付与できる点で好ましい。長鎖アルキル樹脂を用いた場合、表面自由エネルギーが低い長鎖アルキルが樹脂層の表面に偏析し、表面に対し垂直方向に配向・結晶化することで末端のメチル基が表面に露出し、表面自由エネルギーを低下させることで軽剥離性が発現する。
<樹脂または化合物(B)>
本発明の積層フィルムの樹脂層は、離型剤と、さらに樹脂又は化合物を含有する塗料組成物から形成されてもよい。樹脂または化合物としては、エポキシ樹脂、オキサゾリン化合物、カルボジイミド化合物、メラミン樹脂、ポリエステル樹脂、アクリル樹脂、ウレタン樹脂から選ばれる少なくとも1種類の樹脂又は化合物などが挙げられる。これらの中でも塗膜の架橋が進行しやすく、AFMによる表面弾性率を高める観点からポリエステル樹脂やアクリル樹脂、メラミン樹脂、オキサゾリン化合物を特に好ましく用いることができる。
本発明の積層フィルムの特に好ましい用途としては、樹脂層の表面に、セラミックスラリーを塗布し、セラミックスラリーを固化させた表面層を剥離する工程用の工程フィルムが挙げられる。ここでセラミックスラリーとは、セラミック、バインダー樹脂、溶媒からなるものである。
本発明の積層フィルムの製造方法について説明する。ここで樹脂基材としてポリエステルフィルムを例として説明するがこれに限るものではない。
本発明における特性の測定方法、及び効果の評価方法は次の通りである。
積層フィルムの樹脂層面と反対面側に研磨処理を行い、積層フィルムの厚みを10μmに調整した。研磨処理後の積層フィルムから、長手方向12mm、幅方向6mmに切り出し、測定サンプルとした。次いで、測定サンプルの樹脂層面にX線を照射し、その吸収量を計測することにより、X線吸収微細構造(XAFS:X-ray Absorption Fine Structure)スペクトルを測定した。測定条件および解析条件は下記の通りであった。
実験ステーション:BL11
分光器:回折格子分光器
吸収端:炭素のK(284.2eV)吸収端
E0:287.319eV
Pre-edge range:-20~10eV
Normalization range:15~70eV
検出方法:マルチチャンネルプレート計測による部分電子収量法
横軸補正:高配向性熱分解グラファイトのΠ*ピークを255.5eVに補正
上記XAFSスペクトル中、炭素のK吸収端のX線吸収端近傍構造(XANES)スペクトルについて、入射X線と積層フィルムの樹脂層面の長手方向ベクトルのなす角をθとし、部分電子収量法によって得られる293.5eVのスペクトル強度をI(θ)とした。θが15°におけるスペクトル強度I(15°)からθが90°におけるスペクトル強度I(90°)を引いた値をI(15°)-I(90°)とした。
BRUKER製AFM(Atomic Force Microscope(原子間力顕微鏡))「Dimension Icon ScanAsyst」を用い、絶対的キャリブレーション(反り感度測定、バネ定数のキャリブレーション、探針先端曲率測定(ScanAsystNoiseThreshold:1.0nm))を実施した後、積層フィルムの樹脂層側表面を測定し、得られた表面情報から弾性率を求めた。
<測定条件>
ソフトウェア:「NanoScope Analysis」
測定プロ-ブ:RTESPA-300
測定モード:Peak Force QNM in Air
測定範囲:3μm×3μm
測定ライン数:512本
測定速度:0.977Hz
応答感度:25
押し込み深さ:樹脂層の厚みに対して1/10の深さとする
ポアソン比:0.3
具体的には、測定後「DMTModulus」の「Roughness」を選択し、該画面に表示される像を「ScionImage」で二値化(最大値:10GPa、最小値:0GPa、閾値180)し、弾性率が高い部分を白(非ドメイン)、弾性率が低い部分を黒(ドメイン)とした。次いで画像内のすべてのドメインについて最長軸長を測定し、サイズが大きい上位5つの平均値を測定した。さらに任意に測定範囲を選択して10回測定し、最大値と最小値を除いた合計8回の平均値をドメイン径とした。
まず、積層フィルムを室温23℃相対湿度65%の雰囲気中に24時間放置した。その後、同雰囲気下で、積層フィルムの樹脂層の表面側に対して、純水の接触角を、接触角計CA-D型(協和界面科学(株)製)により、5点測定した。5点の測定値の最大値と最小値を除いた3点の測定値の平均値を、水接触角とした。
GCIB-TOF-SIMS(GCIB:ガスクラスターイオンビーム、TOF-SIMS:飛行時間型二次イオン質量分析法)を用いて、積層フィルムの樹脂層表面の組成を分析した。測定条件は、下記の通りであった。
<スパッタリング条件>
イオン源:アルゴンガスクラスターイオンビーム
<検出条件>
1次イオン:Bi3++(25keV)
2次イオン極性:Negative
質量範囲:m/z 0~1,000
測定範囲:200×200μm2
最大強度で検出されるフラグメントのピーク強度をK、ポリジメチルシロキサンに由来するフラグメント(SiCH3+フラグメントイオン(M/Z=43))のピーク強度をPとし、その比P/Kを算出した。P/K<0.01の場合、樹脂層は実質的にシリコーン化合物を含んでいないと判断した。
参考例で調製した離型剤の水分散体を、直径5cmのアルミカップに10g入れ、熱風オーブン内で、80℃×24時間の温度条件で乾燥させ、乾燥した離型剤の固形サンプルを作成した。作成した離型剤の固形サンプルを3mg採取し、示差走査熱量計DSC6220((株)日立ハイテクサイエンス製)を用いて測定した。まず、窒素雰囲気中で、25℃から200℃まで20℃/minの条件で昇温し、200℃で5分間保持した。その後、20℃/minの条件で-50℃まで降温し、この降温時に得られるカーブのピーク温度を計測した。本測定を3回行った平均値をTcとした。このとき、融解ピーク温度が、前記温度範囲の中で2つ以上観測される場合や、ショルダーと言われる多段型のDSCチャートに観測できるピーク温度(2つ以上のピークが重なり合ったチャートの場合に観測される)となる場合があるが、本発明においては、DSCチャートの縦軸の熱量(単位:mW)の絶対値が最も大きいビーク温度をTcとした。
積層フィルムをRuO4及び/またはOsO4を用いて染色した。次に、積層フィルムを凍結せしめ、フィルム厚み方向に切断し、樹脂層断面観察用の超薄切片サンプルを10個得た。それぞれのサンプル断面をTEM(透過型電子顕微鏡:(株)日立製作所製H7100FA型)にて1万~100万倍で観察し、断面写真を得た。10個のサンプルの樹脂層厚みの測定値を平均して、積層フィルムの樹脂層厚みとした。
サンプル50mgを6mLガラススクリュー瓶に入れ、各種溶媒を1mLずつ添加しサンプル全体を試験溶媒に浸漬させた。6時間処理温度で静置し、サンプルの溶解状態を目視観察にて以下の[I]および[II]の判定基準でいずれかに評価し、HSP計算ソフトウェアを用いてHSP値を算出した。
[I]:膨潤も溶解もしていない。
[II]:膨潤または溶解している。
HSP距離=[4(δd1-δd2)2+(δp1-δp2)2+(δh1-δH2)2]1/2
<測定条件>
試験溶媒:n-ヘキサン、シクロヘキサン、メチルイソブチルケトン、酢酸n-ブチル、トルエン、テトラヒドロフラン、メチルエチルケトン、クロロホルム、酢酸メチル、アセトン、1,4-ジオキサン、ピリジン、N-メチルピロリドン、ヘキサフルオロイソプロパノール、1-ブタノール、アセトニトリル、ジエチレングリコール、N,N-ジメチルホルムアミド、γ-ブチルラクトン、エタノール、ジメチルスルホキシド、メタノール、2-アミノエタノール、シクロヘキサン、d-リモネン、p-キシレン、ジヨードメタン、アニソール、ヘプタン
処理温度:40℃
計算ソフトウェア:HSPiP(Hansen Solubility Parameter in Practice)ver.5.2.05
(8)PVB塗布性
表面層の加工性の指標としてポリビニルブチラール(PVB)の塗布性評価を行った。下記組成に混合したPVB溶液を、乾燥後のPVB層の厚みが3μm、1μm、300nmとなるように、それぞれアプリケータを用いて、実施例で得られた積層フィルムの樹脂層上に塗布した後、熱風オーブンで100℃、3分乾燥を行い、PVBのハジキの有無について、目視観察にて以下の判定基準で評価を行った。評価がA以上のものをスラリー塗布性が良好とし、Bは実用上問題ないレベルとした。なお、一般に、PVB溶液の塗布厚みを小さくするほど、ハジキが発生しやすくなる傾向がある。
<PVB溶液の組成>
・ポリビニルブチラール(積水化学工業(株)製“エスレック(登録商標)”BM-2)100質量部
・トルエン 150質量部
・エタノール 150質量部
(9)PVB剥離力(室温雰囲気下のPVB剥離力)
PVB剥離力については、「(8)PVB塗布性」で調整したPVB溶液を、乾燥後のPVB層の厚みが3μmとなるように、アプリケータを用いて、実施例で得られた積層フィルムの樹脂層上に塗布した後、熱風オーブンで100℃、3分乾燥を行い、PVB層を形成した。該PVB層を、島津(株)製万能試験機「オートグラフAG‐1S」及び50Nロードセルを用いて、剥離速度300mm/minにて、180°剥離試験を行った。測定により得られた、剥離力(N)-試験時間(sec)のグラフから、5~10secにおける剥離力の平均値を算出した。この測定を5回行い、最大値と最小値を省いた3回の平均を積層フィルムの剥離力とし、以下の判定基準で評価を行った。評価がA以上のものを良好とし、Bは実用上問題ないレベルとした。
A:16mN/20mm以上31mN/20mm未満
B:31mN/20mm以上61mN/20mm未満
C:61mN/20mm以上
(10)高温でのPVB密着性(高温雰囲気下のPVB剥離力)
加熱処理後の浮きを再現する評価として、「(9)PVB剥離力」と同様の方法にてPVB層を設け、120℃の雰囲気下で島津(株)製万能試験機「オートグラフAG‐1S」及び50Nロードセルを用いて、剥離速度300mm/minにて、180°剥離試験を行った。測定により得られた、剥離力(N)-試験時間(sec)のグラフから、5~10secにおける剥離力の平均値を算出した。この測定を5回行い、最大値と最小値を省いた3回の平均を積層フィルムの剥離力とし、以下の判定基準で評価を行った。評価がA以上のものを良好とし、Bは実用上問題ないレベルとした。
A:40mN/20mm以上50mN/20mm未満
B:30mN/20mm以上40mN/20mm未満
C:30mN/20mm未満
長鎖アルキル基含有樹脂a1を次に示す工程(I)、工程(II)を経て得た。
工程(I):
25mL耐圧ガラス製重合用アンプルに、メタクリル酸メチル(MMA)(関東化学(株)製)、重合開始剤としてα,α’-アゾビスイソブチロニトリル(AIBN)(関東化学(株)製)、RAFT剤としてクミルジチオベンゾエート(CDB)、および溶媒であるトルエンを、MMA/CDB/AIBN/トルエン=2.92/0.03/0.007/2.27の重量(g)で仕込んだ。次に、アンプル内の混合溶液を凍結脱気法により2回脱気した後、アンプルを密閉し、100℃のオイルバス中で18時間加熱し、重合体(I-1)を含む反応液を得た。
工程(II):
アンプル内の反応液に、ドコシルアクリレート、重合開始剤としてAIBN、および溶媒であるトルエンを、ドコシルアクリレート/AIBN/トルエン=1.37/0.003/1.3の重量(g)で加え、凍結脱気を2回行った後、アンプルを密閉して100℃で48時間加熱した。その後、重合溶液を20倍質量のヘキサンに滴下し、撹拌して固体を析出させた。得られた固体をろ取し、40℃で一晩真空乾燥して長鎖アルキル基含有樹脂(炭素数22のアルキル基を有するブロック共重合体(長鎖アルキル基含有樹脂a1という))を得た。
4つ口フラスコにキシレン200部、オクタデシルイソシアネート600部を加え、攪拌下に加熱した。キシレンが還流し始めた時点から、平均重合度500、ケン化度88モル%のポリビニルアルコール100部を少量ずつ10分間隔で約2時間にわたって加えた。ポリビニルアルコールを加え終わってから、さらに2時間還流を行い、反応を終了した。反応混合物を約80℃まで冷却してから、メタノール中に加えたところ、反応生成物が白色沈殿として析出したので、この沈殿を濾別し、キシレン140部を加え、加熱して完全に溶解させた後、再びメタノールを加えて沈殿させるという操作を数回繰り返した後、沈殿をメタノールで洗浄し、乾燥粉砕することで、長鎖アルキル基含有樹脂(ポリメチレンを主鎖として側鎖に炭素数18のアルキル基を有する(長鎖アルキル基含有樹脂a2という))を得た。これを水で希釈し、20質量%に調整した。
長鎖アルキル基含有樹脂a3を以下のように得た。ステンレス反応容器に、メタクリル酸メチル(α)、メタクリル酸ヒドロキシエチル(β)、オクタデシルメタクリレート(γ)を(α)/(β)/(γ)=94/1/5の質量比で仕込み、乳化剤としてドデシルベンゼンスルホン酸ナトリウムを(α)~(γ)の合計100質量部に対して2質量部を加えて撹拌し、混合液1を調製した。次に、攪拌機、環流冷却管、温度計及び滴下ロートを備えた反応装置を準備した。上記混合液1を60質量部と、イソプロピルアルコール200質量部、重合開始剤として過硫酸カリウム5質量部を反応装置に仕込み、60℃に加熱し、混合液2を調製した。混合液2は60℃の加熱状態のまま20分間保持させた。混合液1を40質量部とイソプロピルアルコール50質量部、過硫酸カリウム5質量部からなる混合液3を調製した。続いて、滴下ロートを用いて混合液3を2時間かけて混合液2へ滴下し、混合液4を調製した。その後、混合液4を60℃に加熱した状態のまま2時間保持し、次いで50℃以下に冷却した後、攪拌機、減圧設備を備えた容器に移した。そこに、25%アンモニア水60質量部、及び純水900質量部を加え、60℃に加熱しながら減圧下にてイソプロピルアルコール及び未反応モノマーを回収し、純水に分散された長鎖アルキル基含有樹脂(メタクリレートを主鎖として側鎖に炭素数18のアルキル基を有する(長鎖アルキル基含有樹脂a3という))を得た。
ドコシルアクリレートの代わりにオクタデシルアクリレートを使用した以外は、参考例1と同様の製法で合成し、長鎖アルキル基含有樹脂(炭素数18のアルキル基を有するブロック共重合体(長鎖アルキル基含有樹脂a4という))を得て、参考例1と同様に水系樹脂エマルションとした。
オクタデシルイソシアネートの代わりにイコシルイソシアネートを使用した以外は、参考例2と同様の製法で合成し、長鎖アルキル基含有樹脂(ポリメチレンを主鎖として側鎖に炭素数20のアルキル基を有する(長鎖アルキル基含有樹脂a5という))を得た。
オクタデシルイソシアネートの代わりにドデシルイソシアネートを使用した以外は、参考例2と同様の製法で合成し、長鎖アルキル基含有樹脂(ポリメチレンを主鎖として側鎖に炭素数12のアルキル基を有する(長鎖アルキル基含有樹脂a6という))を得た。
オクタデシルイソシアネートの代わりにオクチルイソシアネートを使用した以外は、参考例2と同様の製法で合成し、長鎖アルキル基含有樹脂(ポリメチレンを主鎖として側鎖に炭素数8のアルキル基を有する(長鎖アルキル基含有樹脂a7という))を得た。
長鎖アルキル基含有樹脂a8を次に示す工程(I)、工程(II)を経て得た。
工程(I):
25mL耐圧ガラス製重合用アンプルに、2-ヒドロキシエチルアクリレート(HEA)(関東化学(株)製)、重合開始剤としてα,α’-アゾビスイソブチロニトリル(AIBN)(関東化学(株)製)、RAFT剤としてクミルジチオベンゾエート(CDB)、および溶媒であるトルエンを、HEA/CDB/AIBN/トルエン=0.35/0.03/0.007/2.27の重量(g)で仕込んだ。次に、アンプル内の混合溶液を凍結脱気法により2回脱気した後、アンプルを密閉し、100℃のオイルバス中で18時間加熱し、重合体(I-8)を含む反応液を得た。
工程(II):
アンプル内の反応液に、ドコシルアクリレート、重合開始剤としてAIBN、および溶媒であるトルエンを、ドコシルアクリレート/AIBN/トルエン=4.65/0.003/1.3の重量(g)で加え、凍結脱気を2回行った後、アンプルを密閉して100℃で48時間加熱した。その後、重合溶液を20倍質量のヘキサンに滴下し、撹拌して固体を析出させた。得られた固体をろ取し、40℃で一晩真空乾燥して長鎖アルキル基含有樹脂(炭素数22のアルキル基を有するブロック共重合体(長鎖アルキル基含有樹脂a8という))を得た。得られた長鎖アルキル基含有樹脂a8を参考例1と同様に乳化し、水系樹脂エマルションとした。
工程IのモノマーとしてHEAの代わりに、4-ヒドロキシブチルアクリレート(HBA)(関東化学(株)製)を用いた以外は参考例1と同様にして、長鎖アルキル基含有樹脂a9を得た。得られた長鎖アルキル基含有樹脂a9を、参考例1と同様の手法にて乳化し、水系樹脂エマルションとした。
工程IのモノマーとしてHEAの代わりに、メトキシトリエチレングリコールメタクリレート(共栄社化学(株)製)を用いた以外は参考例1と同様にして、長鎖アルキル基含有樹脂a10を得た。得られた長鎖アルキル基含有樹脂a10を、参考例1と同様の手法にて乳化し、水系樹脂エマルションとした。
ドコシルアクリレートの代わりにオクタデシルアクリレートを使用した以外は、参考例8と同様の製法で合成し、長鎖アルキル基含有樹脂(炭素数18のアルキル基を有するブロック共重合体(長鎖アルキル基含有樹脂a11という))を得て、参考例1と同様に水系樹脂エマルションとした。
HEAの仕込み重量を0.16g、ドコシルアクリレートの仕込み重量を4.84gとした以外は、参考例1と同様の製法で合成し、長鎖アルキル基含有樹脂a12を得て、参考例1と同様に水系樹脂エマルションとした。
アクリル樹脂を以下のように得た。ステンレス反応容器に、メタクリル酸メチル(α)、メタクリル酸ヒドロキシエチル(β)、ウレタンアクリレートオリゴマー(根上工業(株)製、アートレジン(登録商標)UN-3320HA、アクリロイル基の数が6)(γ)を(α)/(β)/(γ)=94/1/5の質量比で仕込み、乳化剤としてドデシルベンゼンスルホン酸ナトリウムを(α)~(γ)の合計100質量部に対して2質量部を加えて撹拌し、混合液5を調製した。次に、攪拌機、環流冷却管、温度計及び滴下ロートを備えた反応装置を準備した。上記混合液5を60質量部と、イソプロピルアルコール200質量部、重合開始剤として過硫酸カリウム5質量部を反応装置に仕込み、60℃に加熱し、混合液6を調製した。混合液6は60℃の加熱状態のまま20分間保持させた。混合液5を40質量部とイソプロピルアルコール50質量部、過硫酸カリウム5質量部からなる混合液7を調製した。続いて、滴下ロートを用いて混合液7を2時間かけて混合液2へ滴下し、混合液8を調製した。その後、混合液8を60℃に加熱した状態のまま2時間保持し、次いで50℃以下に冷却した後、攪拌機、減圧設備を備えた容器に移した。そこに、25%アンモニア水60質量部、及び純水900質量部を加え、60℃に加熱しながら減圧下にてイソプロピルアルコール及び未反応モノマーを回収し、純水に分散されたアクリル樹脂を得た。
下記の共重合組成からなるポリエステル樹脂を水分散体で調整した。
<共重合成分>
(ジカルボン酸成分)
2,6-ナフタレンジカルボン酸ジメチル:88モル%
5-スルホイソフタル酸ジメチルナトリウム:12モル%
(ジオール成分)
ビスフェノールS1モルに対してエチレンオキサイド2モルを付加した化合物:86モル%
1,3-プロパンジオール:14モル%
(参考例15)
シリコーン系樹脂として、信越化学工業(株)製KM-3951、信越化学工業(株)製X-52-6015、信越化学工業(株)製CAT-PM-10Aを質量比85:15:5で混合したものを調整した。
ドコシルアクリレートの代わりに2-ペルフルオロヘキシルエチルアクリレート(2-ペルフルオロヘキシルエタノールを原料として公知の方法で合成し、単蒸留精製したもの)を使用した以外は、参考例1と同様の製法で合成し、フッ素系樹脂f1を得た。
ドコシルアクリレートの代わりに2-ペルフルオロデシルエチルアクリレート(2-ペルフルオロデシルエタノールを原料として公知の方法で合成し、単蒸留精製したもの)を使用した以外は、参考例1と同様の製法で合成し、フッ素系樹脂f2を得た。
・塗料組成物:
長鎖アルキル基含有樹脂a1が100質量部に対して、フッ素系界面活性剤(互応化学工業(株)製“プラスコート”RY-2)を0.1質量部になるように添加して塗料組成物を得た。ポリエステルフィルムへの塗布性を向上させるためにフッ素系界面活性剤を添加した。
・ポリエステルフィルム:
シリカ粒子(1次粒径0.3μm)4質量%と炭酸カルシウム粒子(1次粒径0.8μm)2質量%を含有したPETペレット(極限粘度0.64dl/g)を十分に真空乾燥した。次いで、PETペレットを押出機に供給して280℃で溶融し、T字型口金よりシート状に押し出し、静電印加キャスト法を用いて表面温度25℃の鏡面キャスティングドラムに巻き付けて冷却固化せしめた未延伸フィルムを90℃に加熱して長手方向に3.1倍延伸し、一軸延伸フィルム(Bフィルム)を得た。
・積層フィルム:
得られた一軸延伸フィルムに空気中でコロナ放電処理を施した後、表1に示す塗料組成物をバーコートを用いて塗布厚み約6μmで塗布した。続いて、塗料組成物を塗布した一軸延伸フィルムの幅方向の両端部をクリップで把持して予熱ゾーンに導いた。予熱ゾーンの雰囲気温度は90~100℃にし、塗料組成物の溶媒を乾燥させた。引き続き、連続的に100℃の延伸ゾーンで幅方向に3.6倍延伸し、続いて230~240℃の熱処理ゾーンで20秒間熱処理を施した後、樹脂層を形成せしめた。さらに同温度にて幅方向に5%の弛緩処理を施しつつ、55℃で30秒間冷却し、ポリエステルフィルムの結晶配向が完了した積層フィルムを得た。得られた積層フィルムにおいてポリエステルフィルムの厚みは50μm、樹脂層の厚みは30nmであった。実施例で得られた積層フィルムの特性等を表3~6に示す。
表1、表2に示す塗料組成物、表3、表4に示す温度条件とした以外は、実施例1と同様の方法で積層フィルムを得た。表1、表2に示す長鎖アルキル基含有樹脂a1~a12は参考例1~12、アクリル樹脂は参考例13、ポリエステル樹脂は参考例14で得られた樹脂を用いた。また、メラミン樹脂は(株)三和ケミカル製“ニカラック”(登録商標)MW-035(固形分濃度70質量%、溶媒:水)、オキサゾリン化合物は(株)日本触媒製“エポクロス”(登録商標)WS-500(固形分濃度40質量%、溶媒:水)を用いた。また固形分質量比は表に記載の樹脂及び化合物の総質量に対する比率を表す。いずれの実施例においてもPVB塗布性、剥離性ともに良好であった。
長鎖アルキル基含有樹脂を実質的に含まず、塗料組成物がオレフィン系樹脂(三井化学(株)製“ケミパール”(登録商標)XEP800H)と参考例13で得られたアクリル樹脂を含み、表2に示す塗料組成物、表4に示す温度条件とした以外は、実施例1と同様の方法で、積層フィルムを得た。得られた積層フィルムの特性等を表4、表6に示す。PVB塗布性、高温でのPVB密着性は良好なものの、PVB剥離性が不良であった。
長鎖アルキル基含有樹脂を実質的に含まず、塗料組成物が参考例15で調整したシリコーン系樹脂と、メラミン樹脂として(株)三和ケミカル製“ニカラック”(登録商標)MW-035(固形分濃度70質量%、溶媒:水)を含み、表2に示す塗料組成物、表4に示す温度条件とした以外は、実施例1と同様の方法で、積層フィルムを得た。PVB剥離性は良好なものの、PVB塗布性、高温でのPVB密着性は不良であった。
長鎖アルキル基含有樹脂を実質的に含まず、塗料組成物が参考例16で得られたフッ素系樹脂f1と参考例13で得られたアクリル樹脂を含み、表2に示す塗料組成物、表4に示す温度条件とした以外は、実施例1と同様の方法で、積層フィルムを得た。PVB塗布性、高温でのPVB密着性は良好なものの、PVB剥離性が不良であった。
長鎖アルキル基含有樹脂a1を長鎖アルキル基含有樹脂a7とし、塗料組成物が参考例13で得られたアクリル樹脂を含み、表2に示す塗料組成物、表4に示す温度条件とした以外は、実施例1と同様の方法で、積層フィルムを得た。PVB塗布性、高温でのPVB密着性は良好なものの、PVB剥離性が不良であった。
長鎖アルキル基含有樹脂を実質的に含まず、塗料組成物が参考例13で得られたアクリル樹脂とメラミン樹脂として(株)三和ケミカル製“ニカラック”(登録商標)MW-035(固形分濃度70質量%、溶媒:水)を含み、表2に示す塗料組成物、表4に示す温度条件とした以外は、実施例1と同様の方法で、積層フィルムを得た。PVB塗布性、高温でのPVB密着性は良好なものの、PVB剥離性が不良であった。
長鎖アルキル基含有樹脂を実質的に含まず、塗料組成物がオレフィン系樹脂(三井化学(株)製“ケミパール”(登録商標)XEP800H)と参考例13で得られたアクリル樹脂を含み、表2に示す塗料組成物、表4に示す温度条件とした以外は、実施例1と同様の方法で積層フィルムを得た。PVB塗布性、高温でのPVB密着性は良好なものの、PVB剥離性が不良であった。
長鎖アルキル基含有樹脂を実質的に含まず、塗料組成物が参考例15で調整したシリコーン系樹脂とメラミン樹脂として(株)三和ケミカル製“ニカラック”(登録商標)MW-035(固形分濃度70質量%、溶媒:水)を含み、表2に示す塗料組成物、表4に示す温度条件とした以外は、実施例1と同様の方法で積層フィルムを得た。PVB剥離性は良好なものの、PVB塗布性、高温でのPVB密着性は不良であった。
長鎖アルキル基含有樹脂を実質的に含まず、塗料組成物が参考例17で得られたフッ素系樹脂f1と参考例13で得られたアクリル樹脂を含み、表2に示す塗料組成物、表4に示す温度条件とした以外は、実施例1と同様の方法で、積層フィルムを得た。PVB塗布性、高温でのPVB密着性は良好なものの、PVB剥離性が不良であった。
Claims (14)
- 樹脂基材の少なくとも片面に樹脂層を有する積層フィルムであって、前記樹脂層が少なくとも一方の表層にあり、樹脂層面に対し、部分電子収量法によって測定したXAFSスペクトルのうち、炭素のK吸収端のX線吸収端近傍構造(XANES)スペクトルについて、入射X線と樹脂層面がなす角をθとし、293.5eVのスペクトル強度をI(θ)としたとき、I(15°)-I(90°)≧0.1を満たす積層フィルム。
- 前記樹脂層をAFMによって測定した表面弾性率が1GPa以上である請求項1に記載の積層フィルム。
- 樹脂基材の少なくとも片面に、樹脂層が積層された積層フィルムであり、テープ剥離力が3.0N/19mm以下であり、かつAFMによる弾性率像にて観察されるドメイン径が500nm以下である請求項1または請求項2に記載の積層フィルム。
- 樹脂基材の少なくとも片面に、樹脂層が積層された積層フィルムであり、テープ剥離力が3.0N/19mm以下であり、かつAFMによる弾性率像にて観察されるドメイン径が500nm以下である積層フィルム。
- 前記樹脂層をAFMによって測定した表面弾性率が1GPa以上である請求項4に記載の積層フィルム。
- 前記樹脂層の水接触角が85°以上110°以下である請求項1~5のいずれかに記載の積層フィルム。
- 前記樹脂層面に対し、部分電子収量法によって測定したXAFSスペクトルのうち、炭素のK吸収端のX線吸収端近傍構造(XANES)スペクトルについて、入射X線と樹脂層面がなす角をθとし、293.5eVのスペクトル強度をI(θ)としたとき、[I(15°)-0.1]/I(90°)>1を満たす請求項1~6のいずれかに記載の積層フィルム。
- 飛行時間型2次イオン質量分析により前記樹脂層の表面を分析した際、最大強度で検出されるフラグメントのピーク強度(K)に対する、ポリジメチルシロキサンに由来するフラグメントのピーク強度(P)の比(P/K)[-]が0.01未満である請求項1~7のいずれかに記載の積層フィルム。
- 前記樹脂層に離型剤(A)として長鎖アルキル系樹脂を含み、かつ長鎖アルキル系樹脂が、示差走査熱量計(DSC)で25℃から200℃まで20℃/minで昇温後、200℃から-50℃まで20℃/minで降温した際の、降温過程における発熱ピーク温度(Tc)が30℃以上である請求項1~8のいずれかに記載の積層フィルム。
- 前記樹脂層が、離型剤(A)と、エポキシ樹脂、オキサゾリン化合物、カルボジイミド化合物、ポリエステル樹脂、アクリル樹脂、ウレタン樹脂から選ばれる少なくとも1種類の樹脂又は化合物(B)を含有する塗料組成物から形成される請求項1~9のいずれかに記載の積層フィルム。
- 前記樹脂層の膜厚が10nmより大きく200nm未満である請求項1~10のいずれかに記載の積層フィルム。
- 前記樹脂基材がポリエステルフィルムである請求項1~11のいずれかに記載の積層フィルム。
- 請求項1~12のいずれかに記載の積層フィルムの製造方法であって、樹脂基材の少なくとも一方の面に、離型剤(A)と、エポキシ樹脂、オキサゾリン化合物、カルボジイミド化合物、ポリエステル樹脂、アクリル樹脂、ウレタン樹脂から選ばれる少なくとも1種類の樹脂又は化合物(B)を含有する塗料組成物を塗布し、次いで少なくとも一軸方向に延伸し、その後、150℃以上に加熱し、樹脂層を形成せしめる積層フィルムの製造方法。
- 前記樹脂層の表面に、セラミックスラリーを塗布し、固化させた後、剥離する用途に用いられる請求項1~12のいずれかに記載の積層フィルム。
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