Dispersion, laminate, method for manufacturing ceramic green sheet, method for manufacturing ceramic capacitor

Abstract

To provide a ceramic green sheet having superior peelability from a substrate, a laminate, a method for producing a ceramic green sheet, and a method for producing a ceramic capacitor.SOLUTION: A dispersion liquid comprises a resin, ceramic, and a solvent. The resin comprises at least one selected from the group consisting of a resin A that has a branched alkyl group and satisfies requirement X, a resin B that lacks siloxane bond and has a trialkylsilyl group, and an aromatic hydrocarbon resin C. Requirement X: the content of methyl groups in branched alkyl groups within the resin A is 25 mass% or more relative to the total mass of the resin A.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to a method for manufacturing a dispersion, a laminate, a ceramic green sheet, and a method for manufacturing a ceramic capacitor. [Background technology]

[0002] Ceramic green sheets are used in the manufacture of multilayer ceramic electronic components such as multilayer ceramic capacitors, multilayer chip coils, and multilayer ceramic substrates. Generally, ceramic green sheets are manufactured using a dispersion liquid containing the raw ceramic material.

[0003] For example, Patent Document 1 discloses a method for producing a ceramic green sheet using a ceramic slurry containing a polymer having a specific functional group and a mold release agent having both hydrophilic and hydrophobic parts. [Prior art documents] [Patent Documents]

[0004] [Patent Document 1] Japanese Patent Publication No. 2014-141394 [Overview of the project] [Problems that the invention aims to solve]

[0005] With the recent trend towards increasing capacitance and miniaturization of ceramic capacitors, further thinning of ceramic green sheets is being considered. This thinning necessitates improved release properties of the ceramic green sheet from the substrate (polyester substrate). Ceramic green sheets are formed by coating a ceramic-containing dispersion onto a substrate (polyester substrate), and ultimately, the ceramic green sheet is peeled off the substrate. Therefore, a ceramic green sheet with excellent release properties from the substrate is required to facilitate this peeling process.

[0006] The inventors of the present invention studied the dispersion liquid described in Patent Document 1 and found that there is room for improvement in the peelability of the obtained ceramic green sheet with respect to the substrate.

[0007] In view of the above circumstances, an object of the present invention is to provide a dispersion liquid capable of producing a ceramic green sheet excellent in peelability with respect to a substrate. Another object of the present invention is to provide a laminate, a method for producing a ceramic green sheet, and a method for producing a ceramic capacitor.

Means for Solving the Problems

[0008] As a result of intensive studies to solve the above problems, the inventors of the present invention have found that the above problems can be solved by the following configuration.

[0009] 〔1〕 A dispersion liquid containing a resin, a ceramic, and a solvent, where the resin contains at least one selected from the group consisting of resin A having a branched-chain alkyl group and satisfying requirement X described later, resin B having no siloxane bond and having a trialkylsilyl group, and aromatic hydrocarbon resin C. 〔2〕 The dispersion liquid according to 〔1〕, wherein the resin contains at least one selected from the group consisting of resin A further satisfying requirement Y1 described later, resin B satisfying requirement Y2 described later, and aromatic hydrocarbon resin C. 〔3〕 Furthermore, the dispersion liquid according to 〔1〕 or 〔2〕, which contains a low molecular compound having a branched-chain alkyl group. 〔4〕 The dispersion liquid according to 〔3〕, wherein the low molecular compound has an aromatic ring. 〔5〕 The dispersion liquid according to any one of 〔1〕 to 〔3〕, wherein when the molecular weight of the resin is measured by gel permeation chromatography, the number of peak tops is 2 or more. 〔6〕 A laminate having a ceramic green sheet and a polyester substrate, The ceramic green sheet contains a resin and a ceramic, The laminate contains at least one selected from the group consisting of resin A having a branched chain alkyl group and satisfying requirement X described below, resin B having a trialkylsilyl group without a siloxane bond, and aromatic hydrocarbon resin C. 〔7〕 A method for producing a ceramic green sheet, comprising a step of applying a dispersion liquid onto a polyester base material to produce a ceramic green sheet, The dispersion liquid contains a resin, a ceramic, and a solvent, A method for producing a ceramic green sheet, wherein the resin contains at least one selected from the group consisting of resin A having a branched chain alkyl group and satisfying requirement X described below, resin B having a trialkylsilyl group without a siloxane bond, and aromatic hydrocarbon resin C. 〔8〕 A method for producing a ceramic capacitor, which uses the laminate according to 〔6〕.

Advantages of the Invention

[0010] According to the present invention, a dispersion liquid capable of producing a ceramic green sheet excellent in peelability with respect to a base material can be provided. Further, according to the present invention, a laminate, a method for producing a ceramic green sheet, and a method for producing a ceramic capacitor can be provided.

Embodiments for Carrying Out the Invention

[0011] Hereinafter, embodiments of the present invention will be described in detail.

[0012] In this specification, a numerical range represented by "~" means a range that includes the numbers written before and after "~" as the lower and upper limits. In numerical ranges described stepwise in this specification, the upper or lower limit stated in one numerical range may be replaced with the upper or lower limit of another numerical range described stepwise. Also, in numerical ranges described in this specification, the upper or lower limit stated in one numerical range may be replaced with the values ​​shown in the examples.

[0013] In this specification, the term "process" includes not only independent processes but also processes that cannot be clearly distinguished from other processes, provided that the intended purpose of the process is achieved.

[0014] The bonding direction of divalent groups as expressed herein is not limited unless otherwise specified. For example, in a compound represented by the formula "XYZ", if Y is -COO-, Y may also be -CO-O- or -O-CO-. Furthermore, the above compound may also be "X-CO-OZ" or "XO-CO-Z".

[0015] In this specification, the amounts of various components in a dispersion or ceramic green sheet refer to the total amount of multiple substances present in the dispersion or ceramic green sheet, unless otherwise specified, if multiple substances corresponding to various components are present in the dispersion or ceramic green sheet.

[0016] In this specification, "solids" refers to the various components that form the ceramic green sheet, and does not include solvents. Furthermore, any component that forms the ceramic green sheet is considered a solid, even if its properties are liquid.

[0017] [Dispersion] The dispersion of the present invention is a dispersion comprising a resin, a ceramic, and a solvent, wherein the resin comprises at least one selected from the group consisting of resin A having a branched alkyl group and satisfying requirement X described later, resin B having a trialkylsilyl group but lacking a siloxane bond, and aromatic hydrocarbon resin C. Hereinafter, a resin containing at least one selected from the group consisting of resin A, resin B, and resin C will also be referred to as a "specific resin." Furthermore, a methyl group contained in the branched alkyl group of resin A will also be referred to as "methyl group X." The specific resin contained in the dispersion of the present invention has a characteristic structure that can reduce the surface free energy of the formed ceramic green sheet, thereby weakening its adhesion to the polyester substrate. As a result, it is presumed that the peelability from the polyester substrate may be improved.

[0018] [Specific resin] The dispersion contains a specific resin. The specified resin includes at least one selected from the group consisting of resin A, resin B, and resin C. The specified resin may contain other resins other than resins A, B, and C, as long as it contains at least one of resins A, B, and C. In this specification, if a resin falls under two or more of the resins A, B, and C, it will be preferentially classified as resin C or resin B. Specifically, an aromatic hydrocarbon resin having a branched alkyl group and containing 25% by mass or more of methyl group X relative to the total mass of resin A falls under the definition of resins A and C, but in this specification it will be classified and treated as resin C.

[0019] The specific resin preferably includes at least one selected from the group consisting of resin A that further satisfies requirement Y1 described later, resin B that satisfies requirement Y2 described later, and aromatic hydrocarbon resin C.

[0020] <Resin A> Resin A is a resin that has a branched alkyl group and satisfies requirement X. In other words, it is a resin that has a branched alkyl group and contains 25% by mass or more of methyl group X relative to the total mass of resin A. Note that resin A is a different component from the various components described later. Specifically, resin A is different from both resin B and resin C, and is also different from plasticizers.

[0021] Requirement X: The content of methyl groups (methyl X) in the branched alkyl group of resin A is 25% by mass or more, relative to the total mass of resin A. The methyl group X content is 25% by mass or more, preferably 28% by mass or more, and more preferably 30% by mass or more, based on the total mass of resin A. The upper limit is preferably 50% by mass or less, and more preferably 40% by mass or less, based on the total mass of resin A. Note that methyl group X does not include methyl groups that are directly bonded to the main chain of resin A. Specifically, methyl group Z, which will be described later, does not correspond to methyl group X. The methyl group X is preferably a methyl group that constitutes a branched alkyl group in the side chain of resin A.

[0022] The amount of methyl group X can be calculated using the following method. If the structure of the raw materials (monomers) used in the synthesis of resin A is known, it can be calculated from the structure and content of those raw materials. Specifically, as an example, the following will be explained in detail using resin AX. Resin AX is a copolymer of t-butyl acrylate and isopropyl methacrylate (80% by mass / 20% by mass). Each repeating unit derived from t-butyl acrylate contains 3 methyl groups X, and the molecular weight of each methyl group X is 15 g / mol. Therefore, the content of methyl groups X in the repeating units derived from t-butyl acrylate is "3 × 15 × 0.8 = 36 g / mol". Similarly, each repeating unit derived from isopropyl methacrylate contains 2 methyl groups X, and the mass of each methyl group X is 15 g / mol. Note that the methyl group indicated by the arrow in the following structural formula is a methyl group (methyl group Z) directly bonded to the main chain of resin A, and therefore does not correspond to methyl group X. Thus, the content of methyl groups X in the repeating units derived from isopropyl methacrylate is "2 × 15 × 0.2 = 6 g / mol". Therefore, the content of methyl group X in resin AX is "{(36+6) / (molecular weight of t-butyl acrylate × 0.8 + isopropyl methacrylate × 0.2)} × 100 = 32.8% by mass" relative to the total mass of resin AX. As shown in the above formula, the content of methyl group X can be determined by calculating the structure of the repeating units that make up resin A, and the content of methyl groups in that structure. Furthermore, as described above, if resin A contains multiple repeating units, the content of methyl group X can be calculated by multiplying the content ratio (mass ratio) of each repeating unit relative to the total number of repeating units of resin A by the content ratio (content ratio) of methyl groups in each repeating unit, and then summing the resulting values. If the structure of the raw material (monomer) used in the synthesis of resin A is unknown, the methyl group X content can be calculated in the same manner as when the raw material is known, after determining the structure of resin A using known methods such as NMR (nuclear magnetic resonance), elemental analysis, and py-GC / MS (pyrolysis gas chromatography-mass spectrometry).

[0023] [ka]

[0024] Examples of branched alkyl groups having a methyl group X include 2-propyl group, 1-isobutyl group, t-butyl group, 2-butyl group, t-pentyl group, 2-pentyl group, 3-pentyl group, 3-methyl-2-butyl group, 3,3-dimethyl-2-butyl group, 2-ethyl-1-hexyl group, 2-pentyl group, 3-pentyl group, 2-hexyl group, 3-hexyl group, 3-methyl-3-pentyl group, 2-heptyl group, 3-heptyl group, 4-heptyl group, 2-octyl group, 3-octyl group, 4-octyl group, 2,4-dimethyl-3-pentyl group, 3,5,5-trimethyl-1-hexyl group, and 2,6,8-trimethyl-4-nonyl group, with t-butyl group being preferred. Furthermore, the following branched alkyl groups are preferred as branched alkyl groups having a methyl group X. The numbers in parentheses in the following branched alkyl groups indicate the number of methyl groups X. * indicates the bond position.

[0025] [ka]

[0026] Resin A is preferably a resin having repeating units derived from acrylates and / or methacrylates having branched alkyl groups, and more preferably a resin having repeating units derived from alkyl acrylates and / or alkyl methacrylates having branched alkyl groups.

[0027] Resin A preferably has repeating units represented by formula (A).

[0028] [ka]

[0029] In formula (A), L A R represents a single bond or a divalent linking group. A1 R represents a branched alkyl group. A2 represents a hydrogen atom or a methyl group. L AExamples of the divalent linking group represented by include, for example, -O-, -S-, -CO-, -COO-, -CONR N -, an alkylene group, a cycloalkylene group, an alkenylene group, an arylene group, and a divalent linking group formed by combining these. R N represents a hydrogen atom or a substituent. L A is preferably a divalent linking group, more preferably -COO- or -CONR N -, and even more preferably -COO-. R N is preferably a hydrogen atom. R A1 Examples of the branched alkyl group represented by include, for example, the branched alkyl group having a methyl group X described above. R A2 is preferably a hydrogen atom.

[0030] The content of heteroatoms other than fluorine atoms and silicon atoms in Resin A (hereinafter, also referred to as "specific heteroatoms") is preferably 40% by mass or less, more preferably 30% by mass or less, and even more preferably 25% by mass or less, based on the total mass of Resin A. The lower limit is preferably 0% by mass or more, based on the total mass of Resin A. Resin A preferably further satisfies Requirement Y1. Requirement Y1: The content of heteroatoms other than fluorine atoms and silicon atoms (specific heteroatoms) in Resin A is 25% by mass or less based on the total mass of Resin A. The specific heteroatoms are heteroatoms other than fluorine atoms and silicon atoms. Specifically, it means an atom other than a hydrogen atom, a carbon atom, a fluorine atom, and a silicon atom, and is preferably an oxygen atom, a nitrogen atom, and a sulfur atom. In other words, the content of the specific heteroatoms of the above Resin A means the total content of atoms other than a hydrogen atom, a carbon atom, a fluorine atom, and a silicon atom in the above Resin A, and is preferably the total content of an oxygen atom, a nitrogen atom, and a sulfur atom. The content of specific heteroatoms can be calculated from the structure and content of the raw materials (monomers) used in the synthesis of resin A, if the structure of those materials is known. If the structure of the raw materials (monomers) used in the synthesis of resin A is unknown, the content can be calculated from the structure of the resin after determining the structure of resin A using known methods such as NMR (nuclear magnetic resonance), elemental analysis, and py-GC / MS (pyrolysis gas chromatography-mass spectrometry).

[0031] It is also preferable that resin A substantially does not contain fluorine atoms. "Substantially free of fluorine atoms" means that the fluorine atom content of resin A is 1% by mass or less, and preferably 0.1% by mass or less, relative to the total mass of resin A. The fluorine atom content can be measured by referring to the method for measuring the content of specific heteroatoms in resin A.

[0032] The weight-average molecular weight of resin A is preferably 1000 or more, more preferably 5000 or more, and even more preferably 10000 or more. The upper limit is preferably 500000 or less, and more preferably 300000 or less. The weight-average molecular weight is the converted value for polystyrene, measured using the same method as the measurement of the number of peak tops described later.

[0033] <Resin B> Resin B is a resin that does not have siloxane bonds and has trialkylsilyl groups. Since resin B does not have siloxane bonds (-Si-O-Si-) and has trialkylsilyl groups, it improves peelability from polyester substrates, and the final ceramic capacitor does not retain siloxane bonds, resulting in excellent electrical properties such as capacitance and electrical resistance. Furthermore, resin B is a different component from the various components mentioned above and the various components described later. Specifically, resin B is different from both resin A and resin C, and is also different from plasticizers.

[0034] The alkyl group constituting the trialkylsilyl group of resin B may be linear, branched, or cyclic, with linear or branched being preferred. The number of carbon atoms in the alkyl group is preferably 1 to 20, more preferably 1 to 10, and even more preferably 1 to 5. Note that the number of carbon atoms refers to the number of carbon atoms in each alkyl group constituting the trialkylsilyl group, and not the total number of carbon atoms in the alkyl group. Examples of the alkyl groups mentioned above include methyl, ethyl, propyl, and butyl groups. Each alkyl group constituting the trialkylsilyl group may be the same or different, but it is preferable that they be the same.

[0035] Resin B preferably has repeating units derived from a monomer having a trialkylsilyl group and a polymerizable group, and more preferably has repeating units derived from a monomer having a trialkylsilyl group and an allyl group.

[0036] Resin B preferably has repeating units represented by formula (B).

[0037] [ka]

[0038] In formula (B), L B R represents a single bond or a divalent linking group. B1 ~R B3 Each of these independently represents an alkyl group. B4 represents a hydrogen atom or a methyl group. L B Examples of divalent linking groups represented by -O-, -S-, -CO-, -COO-, -CONR N - Examples include alkylene groups (which may also be cycloalkylene groups), alkenylene groups, arylene groups, and divalent linking groups combining these. N represents a hydrogen atom or substituent. L B Preferably, the linking group is a divalent group, such as -COO- or -CONR N -or an alkylene group is more preferred, and an alkylene group is even more preferred. N A hydrogen atom is preferred as the element. L B The alkylene group represented by may be linear, branched, or cyclic, with linear being preferred. The number of carbon atoms in the alkylene group is preferably 1 to 10, and more preferably 1 to 3. Examples of the alkylene groups mentioned above include methylene, ethylene, propylene, and butylene groups. R B1 ~R B3 Examples of alkyl groups represented by this symbol include the alkyl groups that constitute the trialkylsilyl group of resin B. R B4 A hydrogen atom is preferred as the element.

[0039] The content of methyl group Y in resin B is preferably 1 to 50% by mass, more preferably 10 to 50% by mass, and even more preferably 20 to 40% by mass, based on the total mass of resin B. Note that methyl group Y is a methyl group other than a methyl group directly bonded to the main chain. Methyl group Y may be a methyl group included in a branched alkyl group, or a methyl group included in an alkyl group other than a branched alkyl group. The content of methyl group Y can be measured in the same way as the content of methyl group X.

[0040] The content of specific heteroatoms in resin B is preferably 40% by mass or less, more preferably 30% by mass or less, and even more preferably 25% by mass or less, relative to the total mass of resin B. The lower limit is preferably 1% by mass or more, and more preferably 10% by mass or more, relative to the total mass of resin B. Resin B is preferably one that satisfies requirement Y2. Requirement Y2: The content of heteroatoms other than fluorine atoms and silicon atoms (specific heteroatoms) in resin B is 25% by mass or less of the total mass of resin B. The content of specific heteroatoms can be measured using the same method as the content of specific heteroatoms in resin A.

[0041] It is also preferable that resin B substantially does not contain fluorine atoms. "Substantially free of fluorine atoms" means that the fluorine atom content of resin B is 1% by mass or less, and preferably 0.1% by mass or less, relative to the total mass of resin B. The fluorine atom content can be measured by referring to the method for measuring the content of specific heteroatoms in resin A.

[0042] The weight-average molecular weight of resin B is preferably 1000 or more, more preferably 5000 or more, and even more preferably 10000 or more. The upper limit is preferably 300000 or less, and more preferably 100000 or less. The weight-average molecular weight can be measured using the same method as for resin A.

[0043] <Resin C> Resin C is a resin (aromatic hydrocarbon resin) consisting only of carbon atoms and hydrogen atoms and having an aromatic ring. Since resin C consists only of carbon atoms and hydrogen atoms and does not contain heteroatoms, it can lower the surface free energy of the ceramic green sheet formed using a dispersion containing resin C, resulting in excellent peelability. Furthermore, resin C is a different component from the various components mentioned above and the various components described later. Specifically, resin C is different from both resin A and resin B, and is also different from plasticizers.

[0044] The aromatic ring in resin C may be monocyclic or polycyclic, with monocyclic being preferred. The number of carbon atoms in the above aromatic ring is preferably 6 to 30, and more preferably 6 to 12. Examples of the aromatic rings mentioned above include benzene rings, naphthalene rings, and anthracene rings, with benzene rings being preferred. Resin C may further have aliphatic hydrocarbon groups. The aromatic ring may have aliphatic hydrocarbon groups, and other substructures may also have aliphatic hydrocarbon groups. The above aliphatic hydrocarbon group may be linear, branched, or cyclic, with linear or branched being preferred. The number of carbon atoms in the above aliphatic hydrocarbon group is preferably 1 to 30, more preferably 1 to 10, and even more preferably 1 to 5. Alkyl groups are preferred as the above aliphatic hydrocarbon groups.

[0045] The resin C preferably has repeating units represented by formula (C).

[0046] [ka]

[0047] In formula (C), L C Ar represents a single bond or an alkylene group. C R represents an aromatic ring group. C1 R represents an alkyl group. C2 represents a hydrogen atom or a methyl group. nc represents an integer from 0 to 5. L C Examples of alkylene groups represented by L B An example of an alkylene group is represented by . L C A single bond is preferred. Ar C The aromatic ring group represented by may be monocyclic or polycyclic. The number of carbon atoms in the above aromatic ring group is preferably 6 to 30, and more preferably 6 to 12. Examples of the above aromatic ring groups include benzene ring groups, naphthalene ring groups, and anthracene ring groups, with benzene ring groups being preferred. R C1 Examples of alkyl groups represented by this symbol include alkyl groups among the aliphatic hydrocarbon groups that resin C may have. R C2 A hydrogen atom is preferred as the element. nc is preferably an integer between 0 and 3, and more preferably 0 or 1. R C1 If there are multiple instances, R C1 They may be the same or different.

[0048] Resin C is preferably free from repeating units derived from styrene having substituents at the α-position (for example, repeating units derived from α-methylstyrene) in terms of heat resistance and the applicability of the dispersion. Furthermore, in terms of the applicability of the dispersion, it is also preferable for resin C to have repeating units having aromatic rings in its main chain. Moreover, it is preferable that resin C does not contain polystyrene resin (resin consisting of repeating units derived from unsubstituted styrene).

[0049] The content of methyl group Y in resin C is preferably 1 to 50% by mass, more preferably 10 to 40% by mass, and even more preferably 20 to 40% by mass, based on the total mass of resin C. The methyl group Y is as described above. The content of methyl group Y can be measured in the same way as the content of methyl group X.

[0050] The weight-average molecular weight of resin C is preferably 1000 or more, more preferably 5000 or more, and even more preferably 10000 or more. The upper limit is preferably 500000 or less, and more preferably 300000 or less. The weight-average molecular weight can be measured using the same method as for resin A.

[0051] The content of specific heteroatoms in the specific resin is preferably 40% by mass or less, more preferably 30% by mass or less, and even more preferably 25% by mass or less, relative to the total mass of the specific resin. The lower limit is preferably 0% by mass or more, relative to the total mass of the specific resin. The content of specific heteroatoms can be measured using the same method as the content of specific heteroatoms in resin A.

[0052] When the molecular weight of a specific resin is measured by gel permeation chromatography (GPC) under the following conditions, it is preferable that the number of peak tops is two or more. In other words, it is preferable that the specific resin contains two or more resins with different weight-average molecular weights. • Column: TSK gel Super HZM-N (manufactured by Tosoh Corporation) • Eluent: Tetrahydrofuran • Detector: Differential refractometer ·Flow rate: 0.35mL / min Column temperature: 40°C • Measured concentration: 1 mg / mL (tetrahydrofuran solution)

[0053] The specific resin is also preferably satisfied with the following requirements. Furthermore, the more of the following requirements it satisfies, the more preferable it is. Requirement 1: The specified resin is substantially free of siloxane bonds. Requirement 2: The specified resin is substantially free of fluorine atoms. Requirement 3: The specified resin is substantially free of acidic groups. Requirement 4: The specified resin is substantially free of alcoholic hydroxyl groups. Requirement 5: The content of the specified heteroatom in the specified resin is 25% by mass or less of the total mass of the specified resin. Requirement 6: The specified resin does not contain any resin in which the content of repeating units derived from t-butyl methacrylate is 98% by mass of the total mass of the resin, and the content of repeating units derived from methacrylic acid is 2% by mass of the total mass of the resin.

[0054] If requirement 1 is met, the specified resin substantially does not contain siloxane bonds. "Substantially free of siloxane bonds" means that the siloxane bond content is 1% by mass or less relative to the total mass of the specific resin, and preferably 0.1% by mass or less. The siloxane bond content can be measured by referring to the method for measuring the content of specific heteroatoms in resin A.

[0055] If requirement 2 is met, the specified resin substantially does not contain fluorine atoms. "Substantially free of fluorine atoms" means that the fluorine atom content is 1% by mass or less, and preferably 0.1% by mass or less, relative to the total mass of the specific resin. The fluorine atom content can be measured by referring to the method for measuring the content of specific heteroatoms in resin A.

[0056] If requirement 3 is met, the specified resin is substantially free of acidic groups. Examples of acidic groups include phenolic hydroxyl groups and carboxyl groups. "Substantially free of acidic groups" means that the acidic group content is 1% by mass or less, and preferably 0.1% by mass or less, relative to the total mass of the specific resin. The acid group content can be measured by referring to the method for measuring the content of specific heteroatoms in resin A.

[0057] If requirement 4 is met, the specified resin substantially does not contain alcoholic hydroxyl groups. "Substantially free of alcoholic hydroxyl groups" means that the content of alcoholic hydroxyl groups is 1% by mass or less, relative to the total mass of the specific resin, and preferably 0.1% by mass or less. The alcoholic hydroxyl group content can be measured by referring to the method for measuring the content of specific heteroatoms in resin A.

[0058] If requirement 5 is met, the content of the specific heteroatom in the specific resin is 25% by mass or less of the total mass of the specific resin. The content of specific heteroatoms in the specific resin is as described above.

[0059] If requirement 6 is met, the specified resin does not contain a resin in which the content of repeating units derived from t-butyl methacrylate is 98% by mass of the total mass of the resin, and the content of repeating units derived from methacrylic acid is 2% by mass of the total mass of the resin. The specific resin preferably does not contain repeating units derived from methacrylic acid or acrylic acid.

[0060] The specified resin may contain at least one of resins A, B, and C, and may also contain other resins other than resins A, B, and C. Other resins include, for example, polyvinyl acetal resin.

[0061] The specific resin may be used individually or in combination of two or more types. The content of the specific resin is preferably 1 to 30% by mass, more preferably 1 to 20% by mass, and even more preferably 1 to 10% by mass, relative to the total solid content of the dispersion. The total content of resins A, B, and C is preferably 50 to 100% by mass, more preferably 80 to 100% by mass, and even more preferably 90 to 100% by mass, relative to the total mass of the specified resin.

[0062] 〔ceramic〕 The dispersion contains ceramics. Examples of ceramics include barium titanate, ferrite, titanium oxide, alumina, zirconia, zinc oxide, aluminum silicate, silicon nitride, magnesia, sialon, spinemulite, silicon carbide, and aluminum nitride, with barium titanate being preferred.

[0063] The average particle size of the ceramic is preferably 0.01 to 5.0 μm, more preferably 0.02 to 3.0 μm, and even more preferably 0.05 to 1.0 μm. The average particle size of ceramics in a dispersion can be measured, for example, using a particle size distribution analyzer that employs dynamic light scattering (e.g., NanoTrac UPA EX150, manufactured by Nikkiso Co., Ltd.).

[0064] Ceramics may be used individually or in combination of two or more types. The ceramic content is preferably 10 to 98% by mass, more preferably 50 to 95% by mass, and even more preferably 70 to 95% by mass, relative to the total solid content of the dispersion.

[0065] [Plasticizer] The dispersion may contain a plasticizer. Plasticizers are components different from the various components mentioned above (for example, specific resins (e.g., resin A, resin B, resin C, and other resins)). If the dispersion contains a plasticizer, the dispersibility of the ceramic in the dispersion is further improved, allowing for an increase in the ceramic content of the dispersion. A plasticizer is a compound that does not contain repeating units and has a molecular weight of less than 1000. The plasticizer is a compound capable of plasticizing specific resins, etc., and known compounds (including surfactants) can be used. Examples of plasticizers include low molecular weight compounds having branched alkyl groups (hereinafter also referred to as "low molecular weight compound S"), low molecular weight compounds having alkylene glycols such as di(butoxyethyl) adipate, dibutoxyethoxyethyl adipate, triethylene glycol dihexanoate, and polyethylene glycol, and alkyl esters such as tributyl acetylcitrate, dibutyl sebacate, and dibutyl phthalate. The plasticizer preferably has an aromatic ring.

[0066] As a plasticizer, it is preferable to include a low molecular weight compound S, and more preferably a low molecular weight compound S, in that it provides good compatibility with specific resins. Low molecular weight compound S is a compound that does not contain repeating units, has a molecular weight of less than 1000, and has a branched alkyl group. The content of methyl groups in the branched alkyl group of the low molecular weight compound S is not particularly limited. That is, the content of methyl groups may be 25% by mass or more, or less than 25% by mass, relative to the total mass of the low molecular weight compound S. The number of carbon atoms in the above-mentioned branched alkyl group is preferably 3 to 30, and more preferably 3 to 10. Examples of the branched alkyl group mentioned above include the branched alkyl group present in resin A. The low molecular weight compound S preferably has an aromatic ring. The above aromatic ring may be monocyclic or polycyclic. The number of carbon atoms in the aromatic ring is preferably 6 to 30, more preferably 6 to 12, and even more preferably 6 to 8. Examples of the aromatic rings mentioned above include benzene rings, naphthalene rings, and anthracene rings, with benzene rings being preferred.

[0067] Examples of low molecular weight compounds S include phthalate esters having branched alkyl groups such as triethylene glycol bis(2-ethylhexanoate) and di-2-ethylhexyl phthalate, and benzenes having branched alkyl groups (e.g., alkene L, manufactured by Nippon Oil Corporation).

[0068] The molecular weight of the plasticizer is less than 1000, preferably 800 or less, and more preferably 500 or less. The lower limit is preferably 200 or more.

[0069] Plasticizers may be used individually or in combination of two or more types. The plasticizer content is preferably 0 to 20% by mass, more preferably 0 to 10% by mass, and even more preferably 0.01 to 5% by mass, relative to the total solid content of the dispersion.

[0070] 〔solvent〕 The dispersion contains a solvent. The solvent is a different component from the various components mentioned above (for example, a specific resin and a plasticizer). Examples of solvents include organic solvents, specifically hydrocarbon solvents such as toluene, xylene, methylcyclohexane, and terpineol; alcohol solvents such as ethanol, n-propanol, isopropanol, and n-butanol; ketone solvents such as acetone, methyl ethyl ketone, and methyl isobutyl ketone; ether solvents such as ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, and propylene glycol monomethyl ether; and ester solvents such as ethyl acetate, butyl acetate, isobutyl acetate, and propylene glycol monomethyl ether acetate. The solvent may be a mixed solvent, preferably a mixed solvent of a hydrocarbon solvent and an alcohol solvent, and more preferably a mixed solvent of toluene and ethanol.

[0071] The molecular weight of the solvent is preferably less than 200. The lower limit is preferably 15 or higher.

[0072] The solvent may be used alone or in combination of two or more types. The solvent content is preferably 10 to 80% by mass, and more preferably 30 to 70% by mass, relative to the total mass of the dispersion.

[0073] [Other ingredients] The dispersion may contain other components besides those listed above. Other components include, for example, flame retardants, thickeners, defoamers, leveling agents, and sintering aids.

[0074] [Method for producing dispersion] The method for producing the dispersion is not particularly limited, but one method involves mixing and dispersing the above-mentioned components. Furthermore, a solvent or additive may be added after dispersion, if necessary. Methods of dispersion include, for example, using known dispersers. Examples of dispersers include ball mill dispersers, paint shakers, and sand grinder mill dispersers. Furthermore, a method of dispersion using beads is preferred, and a bead mill dispersion method in the presence of zirconia beads is more preferred. The various components may be added either all at once or sequentially.

[0075] [Laminated structure] The laminate is a laminate comprising a ceramic lean sheet and a polyester substrate, wherein the ceramic lean sheet comprises a resin and a ceramic, and the resin comprises at least one selected from the group consisting of a resin A having branched alkyl groups and satisfying requirement X, a resin B having trialkylsilyl groups but not siloxane bonds, and an aromatic hydrocarbon resin C. The above-mentioned specific resin is synonymous with the specific resin contained in the dispersion, and the preferred embodiment is also the same. The above-mentioned ceramic is synonymous with the ceramic contained in the dispersion, and the preferred embodiment is also the same.

[0076] [Ceramic Green Sheet] The laminate has a ceramic green sheet. The ceramic green sheet is preferably formed using the above-mentioned dispersion. The ceramic green sheet is the same as the various components other than the solvent that can be contained in the above dispersion, and its preferred range is also the same. The preferred numerical range for the content of various components in the ceramic green sheet is the same as the preferred range obtained by replacing "content of various components relative to the total solid content of the dispersion (mass%)" with "content of various components relative to the total mass of the ceramic green sheet (mass%)". Specifically, the statement "The content of the specific resin is preferably 1 to 30% by mass relative to the total solid content of the dispersion" should be read as "The content of the specific resin is preferably 1 to 30% by mass relative to the total mass of the ceramic green sheet". The manufacturing method for the ceramic green sheet will be described later.

[0077] The thickness of the ceramic green sheet is preferably 0.5 to 100 μm, and more preferably 0.5 to 10 μm.

[0078] [Polyester base material] The laminate contains a polyester substrate. A polyester substrate is a film-like object containing polyester resin as its main resin component. "Main resin component" refers to the resin that is present in the largest quantity (by mass) of all resins contained in the polyester base material.

[0079] <Polyester resin> Polyester resin is a resin that has ester bonds in its main chain. Polyester resins can be obtained, for example, by polycondensation of a dicarboxylic acid compound and a diol compound. Examples of polyester resins include known polyester resins such as polyethylene terephthalate (PET), polyethylene-2,6-naphthalate (PEN), and copolymers thereof, with PET being preferred.

[0080] The method for producing polyester resin is not particularly limited, and known methods can be used. For example, polyester resin can be produced by polycondensation of at least one dicarboxylic acid compound and at least one diol compound in the presence of a catalyst.

[0081] Examples of methods for synthesizing polyester resin include the methods described in paragraphs

[0033] to

[0070] of Japanese Patent Publication No. 5575671, the contents of which are incorporated herein by reference.

[0082] The polyester substrate is preferably a biaxially oriented polyester substrate. "Biaxial orientation" refers to the property of having molecular orientation in two axial directions. Molecular orientation can be measured using a microwave transmission molecular orientation meter (e.g., MOA-6004, manufactured by Oji Instruments Co., Ltd.). The angle between the two axial directions is preferably within the range of 90°±5°, more preferably within the range of 90°±3°, and even more preferably within the range of 90°±1°.

[0083] The polyester resin content is preferably 85% by mass or more, more preferably 90% by mass or more, and even more preferably 95% by mass or more, relative to the total mass of resin in the polyester substrate. The upper limit is preferably 100% by mass or less, relative to the total mass of resin in the polyester substrate.

[0084] When the polyester substrate contains PET, the PET content is preferably 90 to 100% by mass, more preferably 95 to 100% by mass, and even more preferably 98 to 100% by mass, relative to the total mass of polyester resin in the polyester substrate.

[0085] The polyester substrate may contain components other than polyester resin (for example, catalysts, unreacted raw material components, particles, and water). The polyester substrate is preferably substantially free of particles, as this allows for the smooth formation of the ceramic green sheet.

[0086] The thickness of the polyester substrate is preferably 100 μm or less, more preferably 50 μm or less, and even more preferably 40 μm or less. The lower limit is preferably 3 μm or more, more preferably 10 μm or more, and even more preferably 20 μm or more, in terms of improving strength and processability. The thickness of the polyester substrate can be, for example, the arithmetic mean of the thicknesses measured at five points using a stylus-type film thickness gauge.

[0087] [Exfoliation layer] The laminate may have a release layer. The release layer is placed between the polyester substrate and the ceramic green sheet. The release layer may be provided directly on the surface of the polyester substrate, or it may be provided on the polyester substrate via another layer. The release layer preferably contains a release agent. Resins are preferred as the release agent. Examples of such resins include silicone resins, fluororesins, alkyd resins, acrylic resins, various waxes, and aliphatic olefins, with silicone resins being preferred because they offer superior release properties for ceramic green sheets.

[0088] Silicone resin refers to a resin that has a silicone structure within its molecule. Examples of silicone resins include curable silicone resins, silicone graft resins, and modified silicone resins such as alkyl-modified resins, with reactive curable silicone resins being preferred. Examples of reactive curable silicone resins include addition reaction-type silicone resins, condensation reaction-type silicone resins, and ultraviolet or electron beam curable silicone resins.

[0089] The thickness of the release layer is preferably 10 to 1000 nm, and more preferably 30 to 700 nm, in that it provides an excellent balance between release performance and surface smoothness of the release layer. The thickness of the delamination layer can be determined, for example, by preparing a section with a cross-section perpendicular to the main surface of the delamination layer and measuring the thickness at five points on the section using a scanning electron microscope (SEM) or transmission electron microscope (TEM), and taking the arithmetic mean of the thicknesses of these sections.

[0090] <Method for manufacturing polyester substrate> The method for manufacturing the polyester substrate is not particularly limited, but one example is a manufacturing method that includes an extrusion molding step to form the polyester substrate (unoriented polyester substrate) by extrusion molding. In the case of a method for manufacturing a uniaxially oriented or biaxially oriented polyester substrate, the method for manufacturing the polyester substrate further includes an orientation step which involves performing, either stepwise or simultaneously, a first orientation step which involves stretching an unoriented polyester substrate in either the conveying direction or the width direction to form a uniaxially oriented polyester substrate, and / or a second orientation step which involves stretching the uniaxially oriented polyester substrate in the other direction of the conveying direction or the width direction to form a biaxially oriented polyester substrate.

[0091] (Extrusion molding process) The extrusion molding process is a process of forming a polyester substrate (unoriented polyester substrate) by extrusion molding. Specifically, this process involves extruding a molten resin containing the raw material polyester resin into a film to form an unoriented polyester substrate. The raw material polyester resin is the same as the polyester resin described above. Furthermore, in order to produce a polyester substrate that is substantially free of particles, it is preferable to use particle-free polyester pellets during the extrusion molding process.

[0092] Extrusion molding is a method of molding a raw material resin into a desired shape by, for example, using an extruder to push out a molten mass of the raw material resin. The molten material extruded from the extrusion die is formed into a film by cooling. For example, the molten material can be formed into a film by bringing it into contact with a casting roll and cooling and solidifying it on the casting roll. In cooling the molten material, it is preferable to further apply air (preferably cold air) to the molten material.

[0093] (Orientation process) The orientation process is a process that involves performing, either stepwise or simultaneously, a first orientation process in which an unoriented polyester substrate is stretched in either the conveying direction or the width direction to form a uniaxially oriented polyester substrate, and a second orientation process in which the uniaxially oriented polyester substrate is stretched in the other direction (conveying direction or width direction) to form a biaxially oriented polyester substrate. One of the first and second orientation steps is a longitudinal orientation step in which the polyester substrate is stretched in the transport direction (hereinafter also referred to as "longitudinal stretching"), and the other of the first and second orientation steps is a transverse orientation step in which the polyester substrate is stretched in the width direction (hereinafter also referred to as "transverse stretching"). During stretching, the polyester polymers are arranged in each respective direction.

[0094] The orientation process described above may be simultaneous biaxial stretching, in which longitudinal stretching and transverse stretching are performed at the same time, or it may be sequential biaxial stretching, in which longitudinal stretching and transverse stretching are performed in stages. Examples of sequential biaxial stretching include longitudinal stretching → transverse stretching, longitudinal stretching → transverse stretching → longitudinal stretching, and longitudinal stretching → longitudinal stretching → transverse stretching, with longitudinal stretching → transverse stretching being preferred.

[0095] The method for manufacturing the polyester substrate may include other steps in addition to the steps described above. Other processes include, for example, a heat setting process, a heat relaxation process, and a cooling process.

[0096] A method for manufacturing a polyester substrate may include, for example, the steps described in paragraphs 0105 to 0157 of International Publication No. 2022 / 019113, the details of which are incorporated herein by reference.

[0097] [Method for manufacturing ceramic green sheets] The method for manufacturing a ceramic green sheet is not particularly limited, but one example of a method for manufacturing a ceramic green sheet is one which includes the step of applying the above-mentioned dispersion onto a polyester substrate to manufacture a ceramic green sheet. Methods for applying the dispersion include, for example, the reverse roll method, the die coating method, the spray method, the pull method, the inkjet method, and the gravure printing method. Furthermore, if necessary, the coating film formed by application may be subjected to drying treatments such as natural drying, hot air drying, and vacuum drying.

[0098] [Method for manufacturing laminates] The method for manufacturing the laminate is not particularly limited, as long as it includes the above-described method for manufacturing the ceramic green sheet.

[0099] [Method for manufacturing ceramic capacitors] The method for manufacturing the ceramic capacitor is not particularly limited, as long as it is a manufacturing method that uses the above-mentioned laminated body. For example, internal electrodes are provided on the exposed surface of the ceramic green sheet in the laminate manufactured by the above-described method of manufacturing the laminate by applying or printing a conductive paste. Next, the ceramic green sheet with internal electrodes is peeled off from the laminate, and an intermediate laminate is produced by sequentially stacking the obtained ceramic green sheets with internal electrodes and pressing the resulting laminate. After cutting the intermediate laminate into a desired shape, the cut intermediate laminate is fired to obtain a ceramic body. Next, external electrodes that electrically connect to the internal electrodes are formed on the two end faces of the fired intermediate laminate using a conductive paste such as silver, thereby obtaining a ceramic capacitor.

[0100] [Application] The dispersion is preferably used for the manufacture of ceramic green sheets. The ceramic green sheet produced using the above dispersion can be suitably used in the manufacture of ceramic capacitors, where multilayering of internal electrodes is required due to miniaturization and increased capacitance. [Examples]

[0101] The present invention will be further described in detail below with reference to examples. The materials, amounts used, proportions, processing content, and processing procedures shown in the following examples can be appropriately modified as long as they do not depart from the spirit of the present invention. Therefore, the scope of the present invention is not limited to the specific examples shown below. Unless otherwise specified, "parts" and "%" are based on mass.

[0102] [Example 1] First, the dispersion of Example 1 was obtained by mixing the various components listed below using a ball mill in the presence of zirconia beads and then removing the zirconia beads.

[0103] • Ceramic: Barium titanate powder (BaTiO3, product name "BT-03", average particle size 0.3 μm, manufactured by Sakai Chemical Industry Co., Ltd.): 100 parts by mass • Solvent: Mixed solvent of toluene and ethanol (mass ratio 6:4): 135 parts by mass TBST-1: Homopolymer of p-(t-butyl)styrene, weight-average molecular weight 50,000: 8 parts by mass • Dioctyl phthalate (di-2-ethylhexyl phthalate, first grade, manufactured by Kanto Chemical Co., Ltd.)

[0104] Next, the dispersion was applied to the smooth surface of a PET film (the film from Example 1 of International Publication No. 2022 / 019113) using a die coater over a width of 250 mm and a length of 10 m, so that the film thickness after drying would be 3 μm. After that, the obtained film was dried in a dryer at 100°C for 2 minutes, and then wound into a roll to produce a ceramic green sheet-attached film (laminated). The PET film used did not have a release layer.

[0105] [Examples 2-14, Comparative Examples 1-3] Examples 2-14 and Comparative Examples 1-3 were prepared using the same procedure as in Example 1, except that the resins shown in the table below and, if necessary, plasticizers were used. A film (laminated structure) with a ceramic green sheet was then fabricated. In addition, the ceramic and solvent used in the dispersions of Examples 2-14 and Comparative Examples 1-3 were the same as those used in Example 1, in the same amounts. Furthermore, the dispersion in Comparative Example 2 was based on Sample 21 in Example 3 of Patent Document 1.

[0106] 〔resin〕 TBST-1: Homopolymer of p-(t-butyl)styrene, weight-average molecular weight 50,000 TBST-2: Homopolymer of p-(t-butyl)styrene, weight-average molecular weight 5,000 • pTBA-1: Homopolymer of t-butyl acrylate, weight-average molecular weight 30,000 • pTBA-2: Homopolymer of t-butyl acrylate, weight-average molecular weight 80,000 TMAS / TBA: Copolymer of trimethylallylsilane and t-butyl acrylate (40 mol / 60 mol), weight-average molecular weight 10,000 • TMAS / TfBA: Copolymer of trimethylallylsilane and t-butyl-α-CF3-acrylate (40 mol / 60 mol), weight-average molecular weight 8,000 • PVB: Polyvinyl butyral resin (manufactured by Sekisui Chemical Co., Ltd., product name "Esrec (registered trademark) B·K BM-2", weight-average molecular weight 50,000, degree of acetalization approximately 69 mol%) • pNIPAM: Homopolymer of polyisopropylacrylamide • NPST: Homopolymer of p-(n-propyl)styrene TBOST: Homopolymer of p-(t-butoxy)styrene PEO-AA / MMA: Copolymer of polyethylene glycol methyl ether acrylate (molecular weight 480) and methacrylic acid (50% by mass / 50% by mass), weight-average molecular weight 40,000 • pIBMA: i-butyl methacrylate homopolymer, weight-average molecular weight 20,000

[0107] [Plasticizer] • Dioctyl phthalate (di-2-ethylhexyl phthalate, first grade, manufactured by Kanto Chemical Co., Ltd.) • Branched alkylbenzene: Benzene, alkene L, having a branched alkyl chain, manufactured by Nippon Oil Corporation.

[0108] [evaluation] [Removability] The resulting ceramic green sheet-attached film was cut to a width of 30 mm and a length of 80 mm to be used as a sample for peelability measurement. The peel strength at room temperature (25°C) was measured using a peel tester, and the peelability of the ceramic green sheet was evaluated according to the following evaluation criteria. A: It was possible to peel it off much more easily than in Comparative Example 1 (it could be peeled off with much less force). B: It was easier to peel off than in Comparative Example 1 (it could be peeled off with less force). C: It was possible to peel it off with the same amount of force as in Comparative Example 1.

[0109] [Dispersibility] The average particle size of the obtained dispersion (immediately after preparation) was measured using a particle size distribution analyzer (NanoTrack UPA EX150, manufactured by Nikkiso Co., Ltd.), and the dispersibility of the dispersion was evaluated according to the following evaluation criteria. An A rating indicates good dispersibility. A: Average particle size 1μm or less B: Average particle size greater than 1 μm

[0110] [Number of peak tops in GPC] A dispersion containing 1 mg of solids was prepared using tetrahydrofuran to obtain a sample for GPC measurement. The molecular weight of a specific resin was measured using this sample by gel permeation chromatography under the following conditions, and the number of peak tops was determined from the resulting spectrum. • Column: TSK gel Super HZM-N (manufactured by Tosoh Corporation) • Eluent: Tetrahydrofuran • Detector: Differential refractometer ·Flow rate: 0.35mL / min Column temperature: 40°C • Measured concentration: 1 mg / mL (tetrahydrofuran solution) Furthermore, if the number of peak tops in the GPC is two or more, it indicates that the dispersion contains two or more resins with different weight-average molecular weights.

[0111] Each entry in the table indicates the following: The "Methyl group X content" column indicates the content of methyl groups relative to the total mass of resin A in the dispersion, provided that the dispersion contains resin A. If the "Methyl group X content" column shows "25% by mass or more," it indicates that requirement X is met. The "Methyl group Y content" column indicates the content of methyl group Y in resin B or resin C relative to the total mass of resin B or resin C, if the dispersion contains resin B or resin C. The "Content of Specific Heteroatoms" column shows the content of specific heteroatoms relative to the total mass of each resin: resin A, resin B, resin C, and other resins. Note that if the "Content of Specific Heteroatoms" column for resin A is "25% by mass or more," it indicates that requirement Y1 is met. If the "Content of Specific Heteroatoms" column for resin B is "25% by mass or more," it indicates that requirement Y2 is met. The content of methyl group X, methyl group Y, and specific heteroatoms is as described above, and the content of each methyl group and specific heteroatom is calculated from the structure and content of the raw materials (monomers) used in the synthesis of each resin.

[0112] [Table 1]

[0113] As shown in the table, the ceramic green sheet formed using the dispersion of the present invention was confirmed to have excellent peelability from the substrate. When the molecular weight of a specific resin was measured by gel permeation chromatography, it was confirmed that the dispersibility was superior when the number of peak tops was two or more (Examples 9-11). It was confirmed that the peelability is superior when the resin includes at least one selected from the group consisting of resin A which further satisfies requirement Y1, resin B which satisfies requirement Y2, and aromatic hydrocarbon resin C (Examples 3 and 12).

Claims

1. A dispersion containing a resin, a ceramic, and a solvent, A dispersion comprising at least one selected from the group consisting of resin A having a branched alkyl group and satisfying requirement X, resin B having a trialkylsilyl group but lacking a siloxane bond, and aromatic hydrocarbon resin C. Requirement X: The content of methyl groups in the branched alkyl group of resin A is 25% by mass or more relative to the total mass of resin A.

2. The dispersion according to claim 1, wherein the resin comprises at least one selected from the group consisting of resin A that further satisfies requirement Y1, resin B that satisfies requirement Y2, and aromatic hydrocarbon resin C. Requirement Y1: The content of heteroatoms other than fluorine atoms and silicon atoms in the resin A is 25% by mass or less of the total mass of the resin A. Requirement Y2: The content of heteroatoms other than fluorine atoms and silicon atoms in the resin B is 25% by mass or less of the total mass of the resin B.

3. Furthermore, the dispersion according to claim 1 or 2, comprising a low molecular weight compound having a branched alkyl group.

4. The dispersion according to claim 3, wherein the low molecular weight compound has an aromatic ring.

5. The dispersion according to claim 1 or 2, wherein when the molecular weight of the resin is measured by gel permeation chromatography, the number of peak tops is two or more.

6. A laminate having a ceramic green sheet and a polyester substrate, The aforementioned ceramic green sheet comprises resin and ceramic, A laminate comprising at least one selected from the group consisting of a resin A having branched alkyl groups and satisfying requirement X, a resin B having trialkylsilyl groups but lacking siloxane bonds, and an aromatic hydrocarbon resin C. Requirement X: The content of methyl groups in the branched alkyl group of resin A is 25% by mass or more relative to the total mass of resin A.

7. A method for manufacturing a ceramic green sheet, comprising the step of applying a dispersion onto a polyester substrate to manufacture a ceramic green sheet, The dispersion comprises a resin, a ceramic, and a solvent. A method for producing a ceramic green sheet, wherein the resin comprises at least one selected from the group consisting of a resin A having a branched alkyl group and satisfying requirement X, a resin B having a trialkylsilyl group but lacking a siloxane bond, and an aromatic hydrocarbon resin C. Requirement X: The content of methyl groups in the branched alkyl group of resin A is 25% by mass or more relative to the total mass of resin A.

8. A method for manufacturing a ceramic capacitor, comprising manufacturing a ceramic capacitor using the laminate described in claim 6.

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