WO2005080466A1 - 熱硬化性樹脂組成物およびその利用 - Google Patents
熱硬化性樹脂組成物およびその利用 Download PDFInfo
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- WO2005080466A1 WO2005080466A1 PCT/JP2005/002781 JP2005002781W WO2005080466A1 WO 2005080466 A1 WO2005080466 A1 WO 2005080466A1 JP 2005002781 W JP2005002781 W JP 2005002781W WO 2005080466 A1 WO2005080466 A1 WO 2005080466A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L79/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen or carbon only, not provided for in groups C08L61/00 - C08L77/00
- C08L79/02—Polyamines
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/03—Use of materials for the substrate
- H05K1/0313—Organic insulating material
- H05K1/0353—Organic insulating material consisting of two or more materials, e.g. two or more polymers, polymer + filler, + reinforcement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/38—Layered products comprising a layer of synthetic resin comprising epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/50—Amines
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L79/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen or carbon only, not provided for in groups C08L61/00 - C08L77/00
- C08L79/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C08L79/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31511—Of epoxy ether
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31721—Of polyimide
Definitions
- the present invention relates to a thermosetting resin composition and its use, and particularly relates to a flexible printed wiring board containing a polyimide resin component, an amine component, an epoxy resin component, and an imidazole component as essential components.
- the present invention relates to a thermosetting resin composition that can be suitably used for the production of a circuit board such as a build-up circuit board, and to typical uses such as a laminate and a circuit board using the same.
- a protective film for protecting the wiring board or the circuit or an interlayer insulating film for ensuring insulation between layers in a multilayer wiring board is usually provided on the circuit board.
- An insulating layer is formed. Since the insulating layers such as the protective film and the interlayer insulating film are provided on the wiring board, in addition to the insulating properties, the adhesiveness for bonding to the wiring board is required.
- the boards are bonded and fixed by the interlayer insulating film.
- the wiring is fixed with the material of the interlayer insulating film interposed between the circuit wirings.
- the interlayer insulating film is required to have excellent adhesiveness to a substrate or the like and fluidity enough to support the space between circuit wirings. Therefore, the insulating layers such as the above protective film and interlayer insulating film are formed using an adhesive material having adhesiveness and resin fluidity.
- the adhesive material (insulating layer) obtains high reliability of the wiring board at least in the (l) GHz (gigahertz) band. But It is desirable to have a characteristic that it does not adversely affect the transmission of electrical signals. As a result, as described above, the information processing capability of the electronic device can be improved by increasing the frequency of the electric signal.
- an epoxy-based adhesive material or a thermoplastic polyimide-based adhesive material is generally used as the above-mentioned adhesive material conventionally used for a wiring substrate.
- the above-mentioned epoxy adhesive material has excellent workability such as bonding between adherends under low-temperature and low-pressure conditions and embedding of circuit wiring between lines, and is also excellent in adhesion to adherends. Are better.
- the thermoplastic polyimide-based adhesive material has excellent heat resistance such as low thermal expansion and high thermal decomposition temperature.
- JP-A-8-27430 discloses that a polyimide resin having a glass transition temperature within a predetermined range, an epoxy compound, and a compound having an active hydrogen group capable of reacting with the epoxy compound are mixed.
- a technique using a film adhesive is disclosed.
- the film adhesive obtained by this technology enables the adherends to be adhered to each other in a short time at a low temperature, and also enables the heat resistance at a high temperature to be obtained.
- Patent Document 1 JP-A-8-27430
- the above-mentioned conventional adhesive material has a problem that its various characteristics are still insufficient, particularly for use in manufacturing a wiring board corresponding to a high frequency of an electric signal. Has occurred. Specifically, first, in the above general epoxy-based adhesive material, the cured resin (epoxy resin) after curing has a high dielectric constant in the GHz band and a high dielectric loss tangent. Therefore, good dielectric properties cannot be obtained. On the other hand, the above-mentioned thermoplastic polyimide-based adhesive material has excellent dielectric properties because the cured resin (thermoplastic polyimide-based resin) after curing has a small dielectric constant in the GHz band and a small dielectric loss tangent.
- the film adhesive disclosed in Japanese Patent Application Laid-Open No. 8-27430 is a mixture of a polyimide resin and an epoxy compound, and is capable of bonding at a low temperature in a short time. Although it has excellent heat resistance at high temperatures, it does not describe the filling property (resin fluidity) between the lines of the wiring circuit or the dielectric properties.
- the epoxy adhesive compound contained in the film adhesive lowers the softening temperature of the film adhesive to improve the low-temperature curing property.
- the insulating layer in order to improve the information processing capability of electronic devices by increasing the frequency of electric signals, the insulating layer must have (i) adhesiveness, ( ⁇ ) workability and handling, and (m) heat resistance. Gv) Not only the resin fluidity is sufficient (V) The cured resin after curing must exhibit a low dielectric constant and low dielectric loss tangent even in the GHz band and exhibit sufficient dielectric properties. You. Therefore, in order to form the insulating layer, it is expected to develop an adhesive material that satisfies the above (i) various characteristics (V).
- the present invention has been made to solve the above-mentioned conventional problems, and has as its object to be suitably used for manufacturing circuit boards such as flexible printed wiring boards and build-up circuit boards.
- thermosetting resin compositions with excellent adhesiveness, processability, and heat resistance, as well as excellent resin fluidity and dielectric properties in the GHz band, and their typical application technologies. is there.
- the present inventors have conducted intensive studies in view of the above problems, and as a result, by using a polyimide resin, a diamine, an epoxy resin, and an imidazole as essential components, (i) a circuit board or the like as an adhesive material and an insulating layer. (Ii) excellent workability and handleability to enable bonding at low temperatures, (m) excellent heat resistance for thermal expansion and thermal decomposition, and (iv) for embedding circuits. It has been found that the required resin fluidity is specifically improved, and that (V) the cured resin after curing can have a low dielectric constant and dielectric loss tangent in the GHz band, and has excellent dielectric properties. Thus, the present invention has been completed.
- thermosetting resin composition according to the present invention has been developed in order to solve the above-mentioned problems.
- A a polyimide resin component containing at least one polyimide resin
- B an amine component containing at least one amine
- C an epoxy resin component containing at least one epoxy resin.
- D an imidazole component containing one kind of imidazole.
- thermosetting resin composition a mass mixture represented by the mass of the (A) polyimide resin component with respect to the total mass of the (B) amine component and (C) the epoxy resin component is used.
- the ratio (8) / [(8) + () is preferably in the range of 0.4 or more and 2.0 or less.
- the epoxy resin component (C) contains a crystalline epoxy resin. Further, the melting point of the crystalline epoxy resin is preferably in the range of 60 ° C or more and 220 ° C or less.
- thermosetting resin composition is in a semi-cured state and has a minimum melt viscosity of not less than 100 Boys and not more than 500 Boys under the condition that the temperature is in the range of not less than 60 ° C and not more than 200 ° C. It is preferable to be within the range of the void or less.
- the number of moles of active hydrogen contained in the (B) amine component is based on the number of moles of epoxy group of the epoxy resin contained in the (C) epoxy resin component.
- the molar mixing ratio (B) / (C) represented by is preferably in the range of 0.4 or more and 2.0 or less.
- the (B) amine component preferably contains an aromatic diamine having a molecular weight of 300 or more.
- at least one kind of polyimide resin contained in the above-mentioned (A) polyimide resin component has a general formula (1)
- XI is one, one CO—, -0-X2-0-, and one COO—X2— ⁇ C ⁇ one (A-1) acid dianhydride comprising at least one acid dianhydride having a structure represented by the following formula:
- X2 is a divalent group selected from the group consisting of More preferably, it is obtained by reacting the component with a (A-2) diamine component comprising at least one diamine.
- X2 more preferably has at least one aromatic ring, preferably an aliphatic group having 2 to 10 carbon atoms, or a group having at least one aromatic ring.
- the present invention provides a laminate comprising at least one resin layer formed using the above-mentioned thermosetting resin composition, and using the above-mentioned thermosetting resin composition. Circuit boards.
- thermosetting resin composition according to the present invention comprises (A) a polyimide resin component, (B) an amine component, (C) an epoxy resin component, and (D) an imidazole component as essential components. Is what it is.
- thermosetting resin composition having excellent resin fluidity required for filling a circuit and excellent thermosetting resin composition.
- the dielectric constant and the dielectric loss tangent in the GHz band are much higher than those of a conventional resin composition comprising a polyimide resin and an epoxy resin. Since it can be lowered, it is possible to provide (V) a thermosetting resin composition having excellent dielectric properties.
- thermosetting resin composition according to the present invention has a better balance of various properties such as excellent dielectric properties, fluidity, heat resistance, adhesiveness, and processability as compared with conventional resin compositions. It has the effect that it can be realized. Also, since it has particularly excellent dielectric properties, it can be suitably used for manufacturing flexible printed wiring boards, build-up circuit boards, and laminates that require a low dielectric constant and a low dielectric loss tangent in the GHz band. This also has the effect.
- thermosetting resin composition according to the present invention the outline of the thermosetting resin composition according to the present invention, the components of the thermosetting resin composition, and the use of the thermosetting resin composition are described in the order of the present invention. Is explained in detail.
- thermosetting resin composition contains at least four components: (A) a polyimide resin component, (B) an amine component, (C) an epoxy resin component, and (D) an imidazole component.
- A a polyimide resin component
- B an amine component
- C an epoxy resin component
- D an imidazole component.
- thermosetting resin composition contains at least four components: (A) a polyimide resin component, (B) an amine component, (C) a component made of an epoxy resin, and (D) an imidazole component. And (E) other components.
- Each of the components (essential components) in (A) to (D) above need only contain at least one substance classified into each component.
- the mixing ratio of at least each of the components (A) to (C) is specified within a specific range, so that the obtained thermosetting resin composition and the cured resin after curing are obtained.
- various characteristics such as (i) adhesiveness, (ii) workability and handling, (iii) heat resistance, (iv) resin fluidity, and (V) dielectric characteristics can be provided in a more balanced manner.
- the mixing ratio of the components (A) and (C) is defined by a mass ratio or a weight ratio.
- the mass (weight) of each of the above components (A)-(C) mixed with the thermosetting resin composition is represented by the symbol (A)-(C)
- the thermosetting resin composition according to the present invention In the product, the mass mixing ratio of the above (A) polyimide resin component to the total mass (B) + (C) of the above (B) amine component and (C) epoxy resin component (A) / [(B) + (C)] is within a predetermined range.
- the lower limit of the mass mixing ratio (A) Z [(B) + (C)] may be 0.4 or more. It is preferably 0.5 or more.
- the upper limit of the mass mixing ratio (A) / [(B) + (C)] is preferably 2.0 or less, more preferably 1.5 or less. Therefore, the preferable range of the mass mixing ratio is in the range of 0.4 or more and 2.0 or less.
- the mass mixing ratio becomes less than 0.4, that is, the content of the (B) amine component and the (C) epoxy resin component contained in the thermosetting resin composition ((B) + ( When (C)) is relatively large compared to the content of (A) the polyimide resin component, (iii) the heat resistance of the cured resin sheet represented by the elastic modulus and the linear expansion coefficient at high temperature, (Iv) Resin fluidity is improved.
- the mass mixing ratio be 0.4 or more, particularly when the dielectric properties are important. That is, when the mass mixing ratio is less than 0.4, the cured resin sheet has a low G, a low dielectric constant, a low dielectric constant, a low dielectric loss tangent (G). Dielectric properties) may be difficult to achieve.
- the excellent dielectric properties will be described more specifically.
- the cured resin has a dielectric constant at a frequency of 11 GHz.
- the dielectric constant is 3.3 or less
- the dielectric loss tangent is preferably 0.020 or less.
- the electrical insulation of the circuit board can be improved.
- the reliability of the circuit board can be ensured and the signal transmission speed of the circuit on the circuit board can be prevented from being reduced and the signal loss can be suppressed, so that a highly reliable circuit board can be provided.
- the mass mixing ratio exceeds 2.0, that is, the content of the (A) polyimide resin component contained in the thermosetting resin composition is (B) the content of the amine component and (B)
- the content relative to (C) the epoxy resin component ((B) + (C)) is relatively large, (V) excellent dielectric properties can be obtained, but (i) adhesiveness, (ii) Processability ⁇ Handling properties and (iv) resin fluidity may decrease. Therefore, especially in applications where (i) adhesion, (ii) processability and handling properties, and (iv) resin fluidity are important, the mass mixing ratio is preferably 2.0 or less. . That is, when the mass mixing ratio exceeds 2.0, the cured resin after curing has a GHz band.
- thermosetting resin composition before curing, the adhesiveness between the thermosetting resin composition and a conductor or a circuit board, or the workability at the time of bonding the thermosetting resin composition to a conductor or a circuit board, May be insufficient, and the embedding of the circuit may be impaired due to a decrease in resin fluidity.
- thermosetting resin composition according to the present invention, it is more preferable to further define the mixing ratio of the components (B) and (C).
- the mixing ratio of these two components is defined by the molar ratio.
- the number of moles of the epoxy group of the epoxy resin contained in the (C) epoxy resin component is represented by the symbol (C) as in the case of the mass described above,
- the molar mixing ratio (B) / (C) of these two components is preferably within a predetermined range.
- the lower limit of the molar mixing ratio (B) / (C) is preferably 0.4 or more, and more preferably 0.7 or more.
- the upper limit of the molar mixing ratio (B) / (C) is preferably 2.0 or less, more preferably 1.1 or less. Therefore, a preferable range of the molar mixing ratio is in a range of 0.4 or more and 2.0 or less.
- the cured resin after curing may have insufficient (V) dielectric properties. Further, even in the thermosetting resin composition before curing, the glass transition temperature, the coefficient of thermal expansion, the elastic modulus at high temperatures are reduced, and (iii) the heat resistance is also impaired.
- the number of moles of each of the epoxy group and active hydrogen is calculated from the epoxy value and the molecular weight of diamine.
- the active hydrogen in the present invention refers to a hydrogen atom directly bonded to a nitrogen atom of an amino group, and generally has two active hydrogen forces S for one amino group.
- the mixing ratio of the imidazole component (D), which is another essential component in the thermosetting resin composition according to the present invention, is described in (II) Each component of the thermosetting resin composition according to the present invention.
- the mixing ratio of the (D) imidazole component in ( ⁇ -4) (D) imidazole component in (c) is 0.05% by mass or more for 100 parts by mass of (C) epoxy resin component. It is preferably in the range of 0.0 parts by mass or less.
- thermosetting resin composition among the essential components of the thermosetting resin composition, (A) a polyimide resin component, (B) an amine component, (C) an epoxy resin component, and (D) an imidazole component At least, the mixing ratio (mixing ratio) of the components (A) and (C) is specified by mass ratio, preferably the mixing ratio of the components (B) and (C) is specified by molar ratio, and more preferably (M). D) Specify the mixing ratio of the components by mass ratio.
- the resulting thermosetting resin composition and cured resin have (i) adhesiveness to adherends such as circuit boards and conductors, and ( ⁇ ) workability and handleability enabling low-temperature adhesion.
- thermosetting resin composition ⁇ Characteristics of thermosetting resin composition>
- thermosetting resin composition according to the present invention contains the above components (A) to (D) as essential components.
- the specific properties of the thermosetting resin composition are not particularly limited, but among the properties (i)-(V), the lowest value of the melt viscosity under specific conditions (the lowest melt viscosity) By defining (iv), the resin fluidity can be made more preferable. Specifically, it is preferable that the minimum melt viscosity is in the range of 100 to 50,000 vois in a semi-cured state and at a temperature in the range of 60 to 200 ° C. .
- the minimum melt viscosity under the above conditions exceeds 50,000 voids, (iv) the fluidity of the resin becomes insufficient and the circuit filling property may decrease. On the other hand, if it is less than 100 voids, the heat-resistant resin composition protrudes in large amounts outside the substrate during processing, and the amount of resin remaining on the substrate decreases. As a result, the circuit may not be embedded.
- thermosetting resin composition by specifying the mixing ratio of each of the above components, (i) the adhesiveness between the thermosetting resin composition and the adherend such as a conductor or a circuit board; In addition to being able to improve various properties such as processability and handleability when bonding the resin composition to a conductor or circuit board, and (m) heat resistance such as a low thermal expansion coefficient and a high thermal decomposition temperature, (Iv) resin fluidity and ( v) Dielectric properties can be improved. Since the obtained thermosetting resin composition and cured resin can realize these characteristics in a well-balanced manner, the present invention is applicable to the manufacture of flexible printed wiring boards, circuit boards such as build-up circuit boards, and the like. It can be suitably used, and good characteristics can be imparted to a circuit board obtained by using the thermosetting resin composition of the present invention.
- thermosetting resin composition ( ⁇ ) Each component of the thermosetting resin composition according to the present invention
- the (A) polyimide resin component used in the present invention may contain at least one kind of polyimide resin.
- the thermosetting resin composition according to the present invention has sufficient heat resistance by containing the (A) polyimide resin component, and has an excellent bending resistance and an excellent resistance to the cured resin after curing. Mechanical properties and chemical resistance as well as excellent dielectric properties.
- the polyimide resin used as the polyimide resin component is not particularly limited, but is preferably a soluble polyimide resin that is soluble in an organic solvent.
- the soluble polyimide resin refers to a polyimide resin that dissolves in an organic solvent in an amount of 1% by weight or more in a temperature range of 15 ° C to 100 ° C.
- organic solvent examples include ether solvents such as dioxane, dioxolan, and tetrahydrofuran; acetoamide solvents such as N, N-dimethylformamide and N, N-getylacetamide; N, N-ethyl Examples include at least one solvent selected from formamide solvents such as formamide; N, N-dimethylacetamide; pyrrolidone solvents such as N-methyl-2-pyrrolidone and N-butyl_2_pyrrolidone. These solvents may be used alone or in combination of two or more at any ratio.
- the thermosetting resin composition according to the present invention when the above-mentioned soluble polyimide resin is used, when the thermosetting resin composition according to the present invention is heat-cured, it is not necessary to perform a treatment at a high temperature for a long time. Therefore, the epoxy resin component (C) described below can be efficiently cured. That is, in the present invention, when a soluble polyimide resin is used as one of the (A) polyimide resin components, (ii) processability and handleability are improved. It is preferable from the viewpoint of improvement.
- the polyimide resin can be produced by a conventionally known method. Specifically, for example, it can be obtained by chemically or thermally imidizing a polyamic acid (polyamic acid) which is a precursor material of a polyimide resin.
- polyamic acid polyamic acid
- a method for producing a polyimide resin by imidization from a polyamic acid will be described in detail.
- the polyamic acid comprises, as monomer materials, an organic solvent comprising (A-1) an acid dianhydride component containing at least one acid dianhydride and (A-2) diamine component containing at least one diamine. It can be synthesized by reacting in At this time, mixing is performed so that the total amount of the (A-1) acid dianhydride component and the total amount of the (A-2) diamine component are substantially equimolar.
- the power for obtaining a polyamic acid copolymer can be obtained.
- the (A-2) diamine component referred to herein is a monomer material for synthesizing a polyamic acid which is a precursor of a polyimide resin, and is a component of the thermosetting resin composition which is effective in the present invention. Needless to say, it is a different component from the required component (B).
- the above-mentioned monomer raw material components of the polyamic acid are each referred to as “(A-1) monomeric acid dianhydride component. "And" (A-2) monomer diamine component ".
- the method of reacting the (A-1) monomeric dianhydride component with the (A-2) monomeric diamine component is not particularly limited, but typical methods include (A — 2) Dissolve the monomeric diamine component in an organic solvent, and then add and mix (A-1) the monomeric dianhydride component to obtain a solution in which the polyamic acid is dissolved in the organic solvent. Acid solution).
- ⁇ dissolved '' refers to a state in which the solvent completely dissolves the solute, and a state in which the solute is uniformly dispersed or diffused in the solvent to be in a state substantially dissolved. Shall be included.
- the above (A-1) monomeric acid dianhydride component and (A-2) monomeric diamine component The addition is not limited to the order described above, and those skilled in the art can appropriately change, modify, and modify the addition method.
- a method of dissolving or dispersing the (A-1) monomeric dianhydride component in an organic solvent first and then removing the (A-2) monomeric diamine component may be employed.
- an appropriate amount of the (A-2) monomer diamine component is added to an organic solvent, and then an excess amount of the (A-1) monomer acid relative to the total amount of the added (A-2) monomer diamine component is added.
- a method of adding a dianhydride component and then adding an amount of the (A-2) monomer diamine component corresponding to an excess amount of the (A-1) monomeric dianhydride may be employed.
- the conditions for synthesizing the polyamic acid are not particularly limited as long as the acid dianhydride, which is a monomer raw material, and the diamine can be polymerized.
- the reaction temperature is preferably 80 ° C or less 0 More preferably within the range of 50 ° C.
- the reaction time may be arbitrarily set within a range of 30 minutes to 50 hours. If the reaction temperature and the reaction time are within these ranges, the polyamic acid can be efficiently synthesized.
- the organic solvent used in the synthesis of the polyamic acid is not particularly limited as long as it is an organic polar solvent. It is preferable to select an organic solvent that is a good solvent for the polyamic acid and has as low a boiling point as possible. When such an organic solvent is used, (1) the viscosity of the reaction solution at the time of performing a polymerization reaction of each of the monomer component components (A-1) and (A-2) (at the time of synthesizing the polyamic acid) is increased. (2) It is preferable in the production process from the viewpoint that the obtained polyimide resin is easily dried.
- organic solvent examples include sulfoxide-based solvents such as dimethyl sulfoxide and getyl sulfoxide; N, N-dimethylformamide and formamide-based solvents such as N, N-getylformamide; Dimethylacetamide—acetamide solvents such as N, N-getylacetamide; pyrrolidone solvents such as N_methyl-2-pyrrolidone and N-butyl-2-pyrrolidone; phenol, o_cresol, m_ Phenolic solvents such as cresol, p_cresol, xylenol, phenol halide, and catechol; hexamethylphosphoramido And ⁇ _petit mouth rataton.
- solvents may be used alone, or two or more thereof may be used in combination at an arbitrary ratio.
- an aromatic hydrocarbon such as xylene or toluene may be used in combination with the organic solvent.
- the ( ⁇ -1) monomeric acid dianhydride component as a monomer material used in the synthesis of the above polyamic acid is not particularly limited, and particularly, in the polyimide resin finally obtained, various kinds of organic solvents can be used.
- Known acid dianhydrides can be used as long as various properties such as solubility, heat resistance, and compatibility with other essential components (II) and (D) can be sufficiently realized.
- aromatic tetracarboxylic dianhydride is preferable.
- the aromatic tetracarboxylic dianhydride has the following general formula (1)
- XI is a divalent group selected from the group consisting of 110, one CO—, -0-X2-0-, and one COO—X2— ⁇ C ⁇ Represents a divalent organic group
- a compound having a structure represented by As the acid dianhydride having such a structure one type may be used alone, or two or more types may be used in combination at an arbitrary ratio.
- X2 is more preferably an aliphatic group having 2 to 10 carbon atoms or at least one aromatic ring, which is preferably a group having at least one aromatic ring.
- the thermosetting finally obtained Since the dielectric properties and heat resistance of the conductive resin composition and the cured resin can be improved, the general formula (1)
- the XI force in (1) is preferably X1—O— or C 1—2—OCO—.
- X2 is a group of the following formulas (111)
- a divalent aromatic organic group selected from the group consisting of:
- aromatic tetracarboxylic dianhydrides it is particularly preferable to use 4,4 ′ _ (4,4′-isopropylidene diphenoxy) bisphthalic dianhydride represented by the following structural formula. . [0063]
- This 4,4 '-(4,4,1-isopropylidenediphenoxy) bisphthalic dianhydride is soluble in various organic solvents, heat resistance, Various properties such as compatibility with the) amine component and the (C) epoxy resin component, dielectric properties, etc. can be made sufficient, and a good balance of various properties can be obtained.
- (A-1) a compound used as a monomeric acid dianhydride component is easily available and has the following advantages.
- the (A-1) monomeric dianhydride component a plurality of types of compounds (acid dianhydrides) can be used.
- An acid dianhydride having a structure represented by the formula (1) may be used. That is, as the (A-1) monomeric dianhydride component, it is sufficient that at least one acid dianhydride of the above formula (1) is contained. It may be contained in combination in proportions, and may further contain an acid dianhydride other than the acid dianhydride of the above formula (1) (hereinafter, other acid dianhydrides). ,.
- the content of the acid dianhydride of the above formula (1) in the (A-1) monomeric dianhydride component that is, the content of the acid dianhydride of the formula (1) in all the acid dianhydrides
- the ratio is preferably 50 mol% or more when all the acid dianhydride components are 100 mol%. If the content of the acid dianhydride of the formula (1) is at least 50 mol%, the resulting polyamic acid and polyimide resin will have solubility in various organic solvents, (B) amine component and (C) epoxy resin.
- Various properties such as compatibility with the resin component and dielectric properties can be improved.
- Lomellitic dianhydride [1,2,4,5 benzenetetracarboxylic dianhydride], 3,3 ', 4,4, -Benzophenonetetracarboxylic dianhydride, 3,3,4,4 '-Diphenylsulfonetetracarboxylic dianhydride, 1, 4, 5, 8 naphthalenetetracarboxylic dianhydride, 2, 3, 6, 7_naphthalenetetracarboxylic dianhydride, 3, 3', 4, 4'_dimethyldiphenylsilanetetracarboxylic dianhydride, 1,2,3,4_furantetracarboxylic dianhydride, 4,4'_bis (3,4-dicarboxyphenoxy) diphenyl Nylpropanoic dianhydride, 4,4'_Hexafluoroisopropylidene diphthalic anhydride, 3,3 ', 4,4'_Bifenyltetracarboxylic dianhydride,
- the (A-2) monomer diamine component as a monomer raw material used in the synthesis of the polyamic acid is not particularly limited. Particularly, in the polyimide resin finally obtained, solubility in various organic solvents, heat resistance, soldering, and the like. Known diamines can be used if various properties such as heat resistance, PCT resistance, low water absorption, and thermoplasticity can be sufficiently realized. Of these, aromatic diamines are preferred. In particular, the aromatic diamine is a phenylenediamine such as 1,3-phenylenediamine and 1,2_phenylenediamine, and the following general formula (2)
- R is each independently a hydrogen atom, a halogen atom, Represents an atom or an alkyl group having 1 to 4 carbon atoms, m and n are each independently Is an integer from 1 to 5)
- a compound having a structure represented by the general formula (2) which is preferably a compound having a structure represented by
- the term “direct bond” means that two benzene rings are bonded by directly bonding carbons contained in each of the two benzene rings.
- diamine having a structure represented by the general formula (2) specifically, for example, bis [4 -— (3-— Aminophenoxy) phenyl] methane, bis [4- (4-aminophenyl) phenyl] methane, 1,1-bis [4- (3-aminophenyl) phenyl] ethane, 1,1-bis [4- (4-aminophenoxy) [Phenyl] ethane, 1,2-bis [4- (3-aminophenoxy) phenyl] ethane, 1,2-bis [4- (4-aminophenoxy) phenyl] ethane, 2,2-bis [4— (3— Bis [(aminophenoxy) phenyl] such as aminophenoxy) phenyl] propane, 2,2-bis [4— (4-aminophenoxy) phenyl] propane, 2,2-bis [4- (3-aminophen
- Nyl ether compounds such as 4,4,1-bis [4_ (4 amino- ⁇ , ⁇ -dimethylbenzyl) phenoxy] benzophenone; 4,4, -bis [4- (4-amino-a, (Phenoxy) phenylsulfone compounds such as a-dimethylbenzyl) phenoxy] diphenylsulfone and bis [4_ ⁇ 4_ (4-aminophenoxy) phenoxy ⁇ phenyl] sulfone; 1, 4_bis [4_ (4 Bis [(aminophenoxy) dimethylbenzene] benzene compounds, such as _aminophenoxy) one, one-dimethylbenzyl] benzene and 1,3_bis [4- (4-aminophenoxy) one, one-dimethylbenzyl] benzene; And the like.
- These diamines of the formula (2) may be used alone or in combination of two or more at an arbitrary ratio.
- R is each independently a hydrogen atom, a halogen atom,
- An atom or an alkyl group having 1 to 4 carbon atoms, m and n are each independently an integer of 1 or more and 5 or less), i.e., an amino group at the meta position.
- the diamine having is more preferably used.
- a diamine having a structure represented by the general formula (2-1) (for convenience of explanation, “meta-position diamine” Specifically, for example, among the compounds mentioned above as examples of diamine of the formula (2), 1,1-bis [4- (3-aminophenoxy) phenyl] ethane, 1 , 2-bis [4- (3-aminophenoxy) phenyl] ethane, 2,2_bis [4- (3-aminophenoxy) phenyl] propane, 2,2_bis [4- (3) _aminophenoxy] phenyl ] Butane, 2,2_bis [3 — (3-aminophenoxy) phenyl] — 1,1,1,3,3,3-hexafluoropropane, 1,3-bis (3-aminophenoxy) Benzene, 1,4-bis (3-aminophenoxy) benzene, bis [4- (3-aminophenoxy) phenyl] ketone, bis [4- (3-aminophen
- 1,3-bis (3-aminophenoxy) benzene is particularly preferably used as the meta-diamine.
- the finally obtained thermosetting resin composition has excellent solubility in various organic solvents, excellent solder heat resistance, and excellent PCT resistance. It becomes possible.
- a diamine having a hydroxyl group (-OH) and / or a carboxy group (-COOH) (for convenience of explanation, a structurally common diamine) is used.
- OH can be referred to as “hydroxydiamine”).
- the thermosetting resin composition can promote the curing of the epoxy resin component (C) described later. Therefore, when the thermosetting resin composition is cured, it becomes possible to perform the thermosetting of the (C) epoxy resin component at a low temperature or in a short time. Furthermore, since the epoxy resin component (C) reacts with a hydroxyl group or a carboxy group, the polyimide resins are crosslinked via the epoxy resin. Therefore, the molecular structure of the cured resin after curing is also strengthened.
- the heat-resistant resin composition and the cured resin finally obtained have heat resistance.
- various properties such as solder heat resistance and PCT resistance can be further improved.
- the hydroxydiamine is not particularly limited as long as it has at least one of a hydroxyl group and a carboxyl group in its structure.
- diaminophenol compounds such as 2,4 diaminophenol; diaminobiphenyl compounds such as 3,3, -dihydroxy-4,4, -diaminobiphenyl; 3,3′-diamino —4,4′-Dihydroxybiphenyl, 4,4,1-diamino-1,3,3,1-dihydroxybiphenyl, 4,4,1-diamino-1,2,2,1-dihydroxybiphenyl, 4,4, _diamino Hydroxybiphenyl compounds such as 2,2 ', 5,5'-tetrahydroxybiphenyl and the like; 3,3'-diamino_4,4'-dihydroxydiphenylmethane, 4,4'-diamino-13, 3'-dihydridoxidiphenyl
- thermosetting resin composition By including 3,3, -dihydroxy_4,4, -diaminobiphenyl in the (A_2) monomer diamine component, the resulting thermosetting resin composition and cured resin have good solder heat resistance and PCT resistance. Can be given.
- the (A-2) monomer diamine component contains at least one diamine of the above formula (2) (particularly, meta-position diamine), and further contains at least one hydroxy diamine. It is preferred that it is contained. Further, even when the diamine of the formula (2) is not contained, it is preferable that at least one kind of the hydroxydiamine is contained. That is, in the present invention, the monomer diamine component (A-2) preferably contains at least one diamine and / or hydroxy diamine of the formula (2). Thereby, more excellent solder heat resistance and PCT resistance can be obtained for the obtained thermosetting resin composition and cured resin.
- the content of the diamine of the above formula (2) in the (A-2) monomer diamine component that is, the ratio of the diamine of the formula (2) in all the diamines is 100 moles of all the diamine components. %, It is preferably from 60 mol% to 99 mol%.
- the content of the hydroxydiamine in the (A-2) monomeric diamine component was set to 100 mol% for all diamine components.
- the content is preferably 1 mol% or more and 40 mol% or less.
- the resulting thermosetting resin composition and cured resin are likely to lose solubility in various organic solvents, solder heat resistance, and PCT resistance. .
- the above-mentioned formulas (2) can be obtained by combining each of the diamines at an arbitrary ratio.
- diamine and hydroxydiamine are used in combination, they may be contained within the above ranges.
- the (A-2) monomer diamine component may contain a diamine other than the diamine of the above formula (2) and the hydroxydiamine (referred to as "other diamine” for convenience of explanation). ,.
- Other diamines contained in the monomer diamine component are not particularly limited, but aromatic diamines can be preferably used.
- aromatic diamines include m-phenylenediamine, o-phenylenediamine, p-phenylenediamine, m-aminopenzinoleamine, p-aminobenzinoleamine, and bis-diamine.
- (A- 2) content of the other di ⁇ Minh in Monomajiamin component is preferably less than 10 mol% is 100 mole 0/0 all Jiamin components.
- the (A-1) monomeric acid dianhydride component and the (A-2) monomeric diamine component are mixed and stirred in an organic solvent as described in the above section ⁇ Method for producing (synthesizing) polyamic acid>.
- a polyamic acid solution is obtained.
- imidizing the polyamic acid in the polyamic acid solution a soluble polyimide resin can be obtained.
- Specific methods for imidization performed at this time include (1) a thermal method, (2) a chemical method, and (3) a vacuum imidization method. By these techniques, a polyimide resin is obtained by dehydrating and cyclizing a polyamic acid.
- the above-mentioned (1) thermal method is a method in which a polyamic acid solution is subjected to heat treatment to effect dehydration and ring closure, and the specific steps are not particularly limited.
- the imidation reaction can be advanced by the treatment, and at the same time, the solvent can be evaporated.
- a solid polyimide resin can be obtained.
- the conditions of the heat treatment are not particularly limited, but it is preferable that the heating is performed at a temperature of 300 ° C. or lower for a time in a range of about 5 minutes to 20 minutes.
- the (2) chemical method is a method of dehydrating and cyclizing a polyamic acid using a dehydrating agent, and the specific steps are not particularly limited.
- a method of performing a dehydration reaction and evaporating an organic solvent by adding a stoichiometric amount or more of a dehydrating agent and a catalyst can be exemplified.
- this chemical method it is possible to obtain a solid polyimide luster.
- Examples of the dehydrating agent include aliphatic acid anhydrides such as acetic anhydride; aromatic acid anhydrides such as benzoic anhydride; N, N'-dicyclohexylcarbodiimide; N, N'-diisopropylcarbodiimide; And the like.
- Examples of the catalyst include: aliphatic tertiary amines such as triethylamine; aromatic tertiary amines such as dimethylaniline; and complex such as pyridine, ⁇ -picoline, —picoline, ⁇ -picoline, and isoquinoline. Cyclic tertiary amines; and the like.
- the temperature condition for the dehydration ring closure by a chemical method is preferably 100 ° C or less, and the reaction time is preferably within a range of about 1 minute to 50 hours. preferable. Further, the evaporation of the organic solvent is preferably performed at a temperature of 200 ° C. or less for a time in a range of about 5 minutes to 120 minutes.
- the vacuum imidization method is a method of imidizing a polyamic acid by performing a heat treatment under reduced pressure, and the specific steps are not particularly limited.
- the heating conditions may be within the range of 80 to 400 ° C, but in order to perform imidization and dehydration efficiently, it is more preferable to be 100 ° C or more, and it is more preferable to be 120 ° C or more. More preferred.
- the maximum temperature in the heat treatment is preferably set to be equal to or lower than the thermal decomposition temperature of the polyimide resin, and is usually set within a temperature range of about 150 ° C to 350 ° C which is the completion temperature of imidization. Determined.
- the pressure condition is preferably a low pressure. Specifically, it is preferable that the pressure be within the range of 0.001 to 0.9 atm. More preferably, it is within the range of 0.001 to 0.8 atm. 0.001 to 0.7 atm. Is more preferably within the range.
- the imidation method (1)-(3) the case where the solvent is evaporated has been described as an example.
- the imidation method is not limited to this. Good. Specifically, for example, there is a method in which a polyimide resin solution obtained by the imidation method (1) or (2) is added to a poor solvent to precipitate a polyimide resin. In this method, the unreacted monomer (acid dianhydride 'diamine) contained in the polyimide resin solution is removed for purification. If this is dried, a higher quality solid polyimide resin can be obtained.
- the poor solvent used in this method is not particularly limited as long as the solvent has a property of mixing well with the solvent of the polyimide resin solution, as long as the solvent has a property that the polyimide resin is hardly dissolved.
- acetone, methanol, ethanol, isopropanol, benzene, methylcellosolve (registered trademark), methylethylketone and the like can be mentioned.
- One of these poor solvents may be used alone, or two or more may be used in combination at an arbitrary ratio.
- the ( ⁇ ) amine component used in the present invention may contain at least one kind of amine.
- the thermosetting resin composition according to the present invention can impart good resin fluidity to the thermosetting resin composition by containing the ( ⁇ ) amine component, and can provide the cured resin after curing. Good heat resistance can be imparted thereto.
- the epoxy resin (C) described below is used. The components can be efficiently cured.
- the (B) amine component used in the present invention is not particularly limited, but, for example, monoamines such as aniline, benzylamine, and aminohexane; used in the production of the above-mentioned polyamic acid (A-2) Various diamines listed as the monomer diamine component; polyamines such as diethylenetriamine, tetraethylenepentamine, and pentaethylenehexamine; and the like.
- the amine component (B) among these amines, it is preferable to use an aromatic diamine, and it is preferable that the amine component contains an aromatic diamine having a molecular weight of 300 or more. It is more preferable to contain an aromatic diamine in the range of Thereby, good heat resistance and dielectric properties can be given to the cured resin after curing.
- the cured resin after curing contains a large number of polar groups in the structure, so that the dielectric properties may be impaired. That is, the dielectric constant and the dielectric loss tangent of the cured resin tend to increase. On the other hand, if the molecular weight exceeds 600, the crosslinking density in the cured resin decreases, and the heat resistance may be impaired.
- the aromatic diamine is not particularly limited, but specifically, for example, [4- (4-aminophenyl) phenyl] methane, 1,1-bis [4- (3-aminophenoxy) Phenyl] ethane, 1,1-bis [4- (4-aminophenoxy) phenyl] ethane, 1,2-bis [4- (3-aminophenyl) phenyl] ethane, 1,2-bis [4— (4— Aminophenoxy) phenyl] ethane, 2,2-bis [4- (3-aminophenoxy) phenyl] propane, 2,2-bis [4- (4-aminophenoxy) phenyl] propane, 2,2-bis [4— Bis [(aminophenoxy) phenyl] alkanes such as (3-aminophenoxy) phenyl] butane; 2,2_bis [3- (3-aminophenoxy) phenyl] -1,1,1,3,3,3_hex
- 2,2_bis [4- (3-aminophenoxy) phenyl] propane, 2,2-bis [4- (4-aminophenoxy) phenyl] propane, 2,2-bis [3 — (3-aminophenoxy) phenyl 1,1,3,3,3_hexafluoropropane, 2,2_bis [4- (4-aminophenyl) phenyl] —1,1,1,1, 3,3,3-hexafluoropropane, bis [4- (3-aminophenoxy) phenyl] sulfone, bis [4- (4-aminophenoxy) phenyl] sulfone, bis [4- (3-aminophenoxy) Phenyl] ether and bis [4- (4-aminophenoxy) phenyl] ether can be more preferably used.
- These compounds are preferred from the viewpoints of easy handling and easy availability such as easy dissolving in a solvent, etc.
- a cured resin after curing is obtained.
- Excellent properties such as heat resistance (high glass transition temperature), dielectric properties, etc. Can be.
- the epoxy resin component (C) used in the present invention may contain at least one type of epoxy resin.
- the thermosetting resin composition according to the present invention can impart good resin fluidity to the thermosetting resin composition by containing the (C) epoxy resin component, and can also provide the cured resin after curing. Good heat resistance and insulation can be imparted to the steel. Further, by containing the epoxy resin component (C), good adhesion to a conductor such as a metal foil or a circuit board can be imparted.
- the epoxy resin is not particularly limited, but specifically, for example, bisphenol type epoxy resin, bisphenol A novolak type epoxy resin, biphenyl type epoxy resin, phenol novolak type Epoxy resin, alkyl phenol novolak type epoxy resin, polydalicol type epoxy resin, cycloaliphatic epoxy resin, cresol novolak type epoxy resin, glycidinoleamine type epoxy resin, naphthalene type epoxy resin, urethane modified epoxy resin, rubber modified epoxy Epoxy resins such as resins and epoxy-modified polysiloxanes; halogenated epoxy resins thereof; crystalline epoxy resins having a melting point; and the like. These epoxy resins may be used alone or in combination of two or more at an arbitrary ratio.
- an epoxy resin having at least one aromatic ring and / or an aliphatic ring in a molecular chain a biphenyl type epoxy resin having a biphenyl skeleton, a naphthalene type epoxy resin having a naphthalene skeleton,
- the crystalline epoxy resin having the same is more preferably used.
- These epoxy resins are readily available and have excellent compatibility with (A), (B) and (D). In addition, it is possible to impart excellent resin fluidity to the obtained thermosetting resin composition and to impart excellent heat resistance and insulation to the cured resin after curing.
- the epoxy resin represented by or a crystalline epoxy resin can be more preferably used.
- various properties such as dielectric properties, heat resistance and circuit embedding property can be imparted to the thermosetting resin composition and the cured resin, and a good balance of these properties can be obtained. It can be.
- thermosetting resin composition is specifically reduced, so that the circuit filling property can be significantly improved (that is, the resin fluidity can be improved).
- the crystalline epoxy resin is not particularly limited as long as it is an epoxy resin having a melting point.
- a product name: YX4000H (a biphenyl type epoxy resin manufactured by Japan Epoxy Resin Co., Ltd.) ), Trade name: EXA7337 (Dainippon Ink Industries, Ltd.) Xanthen-type epoxy resin manufactured by Co., Ltd.) is preferably used.
- the lower limit of the melting point of the crystalline epoxy resin is preferably 60 ° C or higher, more preferably 80 ° C or higher.
- the upper limit of the melting point is preferably 220 ° C or lower, more preferably 200 ° C or lower. Therefore, the melting point of the crystalline epoxy resin is preferably in the range of 60 ° C or more and 220 ° C or less.
- the melting point is less than 60 ° C., when the thermosetting resin composition is molded into a sheet, phase separation tends to occur during molding. As a result, the epoxy resin component (C) precipitates on the sheet surface or the sheet becomes sticky.
- the melting point exceeds 220 ° C., the temperature at which the thermosetting resin composition is bonded to a circuit board or the like increases.
- the epoxy resin used as the epoxy resin component (C) is preferably a high-purity epoxy resin, regardless of the epoxy resin described above.
- the obtained thermosetting resin composition and cured resin can realize a highly reliable electric insulation.
- the standard of the high purity is the concentration of halogen or alkali metal contained in the epoxy resin.
- the concentration of halogen and alkali metal contained in the epoxy resin should preferably be 25 ppm or less, preferably 15 ppm or less, when extracted under the conditions of 120 ° C and 2 atm. But more preferred. If the content of halogen or alkali metal is higher than 25 ppm, the reliability of the electrical insulation of the cured resin will be impaired.
- the epoxy resin used as the epoxy resin component (C) has a lower limit of 150 or more in the epoxy value (also referred to as epoxy equivalent) of any of the above epoxy resins. Preferable more than 170 more preferred most preferred to be 190 or more. Further, the upper limit of the epoxy value of the epoxy resin is preferably 700 or less, more preferably 500 or less, most preferably 300 or less. Therefore, (C) the epoxy value of the epoxy resin used as the epoxy resin component is preferably in the range of 150 to 700.
- the (D) imidazole component used in the present invention may contain at least one kind of imidazole.
- the thermosetting resin composition of the present invention can promote the curing reaction between the (B) amine component and the (C) epoxy resin component.
- thermosetting resin composition can further lower the minimum value of the melt viscosity and significantly improve the circuit filling property (that is, the resin fluidity can be further improved).
- the thermosetting resin composition before curing and the cured resin after curing balance various properties such as excellent dielectric properties, fluidity, heat resistance, adhesiveness and workability. Can be applied well.
- thermosetting resin composition of the present invention is useful in the mixing ratio of the imidazole component (D).
- the (mixing amount) is not particularly limited, but a preferable range of the mixing ratio can be defined by a mass ratio (weight ratio) based on the epoxy resin component (C).
- the mixing ratio of the total amount of the imidazole component (D) is preferably such that the lower limit is 0.05 part by mass or more when the total amount of the (C) epoxy resin component is 100 parts by mass. More preferably at least 1 part by mass. Particularly preferably at least 0.5 part by mass.
- the upper limit is preferably at most 10.0 parts by mass, more preferably at most 5.0 parts by mass, and particularly preferably at most 3.0 parts by mass. Therefore, the mixing ratio of the imidazole component (D) is preferably in the range of 0.05 to 10.0 parts by mass with respect to 100 parts by mass of the epoxy resin component (C).
- the mixing ratio of the (D) imidazole component is less than 0.05 parts by mass, not only the effect of improving the circuit embedding property cannot be obtained but also the curing of the (B) amine component and the (C) epoxy resin component. The reaction may not be able to proceed sufficiently.
- the mixing ratio of the (D) imidazole component exceeds 10.0 parts by mass, the curing reaction of the (B) amine component and the (C) epoxy resin component is excessively accelerated, and thus the storage of the thermosetting resin composition is prevented. When stability or handling is impaired.
- the imidazole used as the (D) imidazole component is not particularly limited.
- 2-ethyl-4-methylimidazole, 2_phenyl-2-methylimidazole, and 2,4-diamino-6 are excellent in circuit embedding property, availability, solvent solubility, and the like.
- -[2'-Indecylimidazolyl (1 ')]-ethyl-s-triazine is more preferably used.
- thermosetting resin composition according to the present invention may contain (E) other components other than the above components (A) to (D), if necessary.
- the other components are not particularly limited, but specifically, for example, (E-1) (C) a curing agent for the epoxy resin component (other than the (B) amine component) (E-2) (C) a curing accelerator for promoting the reaction between the epoxy resin component and the curing agent (other than the (D) imidazole component); and (E-3) a thermosetting component. .
- the curing agent (E-1) is not particularly limited, but specifically, for example, a phenol resin such as a phenol novolak type phenol resin, a cresol novolak type phenol resin, a naphthalene type phenol resin; Dodecyl succinic anhydride, polyadipic acid Aliphatic acid anhydrides such as hexahydrophthalic anhydride and methylhexahydrophthalic acid; aliphatic acid anhydrides such as anhydride and polyazelain anhydride; phthalic anhydride, trimellitic anhydride, benzofu Aromatic acid anhydrides such as enonetetracarboxylic acid, ethylene glycol bistrimellitate and glycerol tris trimellitate; other resins such as amino resins, urea resins and melamine resins; dicyandiamide; dihydrazine compounds; Blensted acid salts; polymercaptan conjugates; isocyanate and block isocyanate conjug
- the amount (mixing ratio) of these curing agents is not particularly limited, and is an amount capable of curing the (C) epoxy resin component, and impairs the dielectric properties of the cured resin.
- the range is not limited, but generally, it is preferable to use the epoxy resin component within the range of 1 to 100 parts by weight when the total amount of the epoxy resin component (C) is 100 parts by weight.
- the curing accelerator (E-2) is not particularly limited, but specific examples thereof include phosphine compounds such as triphenylphosphine; tertiary amines, trimethanolamine, and triethanol. Amine compounds such as amine and tetraethanolamine; and borate compounds such as 1,8-diazabicyclo [5,4,0] -7-indeseniumtetraphenylporate. Can be. These hardening accelerators may be used alone or in combination of two or more at an arbitrary ratio.
- the amount (mixing ratio) of these curing accelerators is not particularly limited, and is an amount that can promote the reaction between the epoxy resin component and the curing agent, and also impairs the dielectric properties of the cured resin.
- the range is not limited, but it is generally preferable to use 0.01 to 10 parts by weight when the total amount of the epoxy resin component (C) is 100 parts by weight.
- thermosetting component is not particularly limited, but specifically, for example, a bismaleimide resin, a bisarylnadiimide resin, an acrylic resin, a methacryl resin, a hydrosilyl cured resin
- Thermosetting resins such as epoxy resin, aryl curing resin and unsaturated polyester resin; aryl group, butyl group, alkoxysilyl group, hydrosilinole on the side chain or terminal of the polymer chain Side-chain reactive group type thermosetting polymer having a reactive group such as a group;
- thermosetting components may be used alone or in combination of two or more at an arbitrary ratio. By adding these thermosetting components, it is possible to improve various properties such as adhesiveness, heat resistance and workability of the obtained thermosetting resin composition and the cured resin after curing.
- the amount (mixing ratio) of the thermosetting component used is not particularly limited, and is an amount that can exhibit the effect of improving various properties and does not impair the dielectric properties of the cured resin. Should be fine.
- thermosetting resin composition which is powerful in the present invention
- thermosetting resin composition according to the present invention can be suitably used as a material for a circuit board such as a flexible printed wiring board and a build-up circuit board, among others, which can be suitably used for various applications. Specifically, it is preferably used as a protective material for protecting the circuit board or the patterned circuit on the circuit board, an interlayer insulating material for securing insulation between layers in a multilayer circuit board, and the like. Can be.
- thermosetting resin composition according to the present invention can be used, for example, as a resin solution (varnish).
- the method for preparing the resin solution is not particularly limited, and the thermosetting resin composition according to the present invention may be added to an appropriate solvent and stirred.
- each of the above-mentioned components (A) to (E) may be dissolved in an appropriate solvent to prepare a solution for each component, and these may be mixed.
- the solution for component separation at this time may contain only each of the components (A) to (E), or may contain two or more components.
- a solution may be prepared for each.
- each polyimide resin may be prepared as a solution and mixed.
- the solvent that can be used for the resin solution is not particularly limited as long as it can dissolve the thermosetting resin composition or each of the components (A) and (E). Is preferably a solvent at 150 ° C. or lower.
- a solvent at 150 ° C. or lower for example, tetrahydrofuran, di Cyclic ethers such as oxolane and dioxane; ethers such as ethylene glycol dimethyl ether, triglyme, diethylene glycol, linear ethers such as ethyl ethyl sorb and methyl ethyl sorb, and the like are preferably used.
- a mixed solvent obtained by mixing toluene, xylenes, glycols, N, N-dimethylformamide, N, N-dimethylacetamide, N-methylpyrrolidone, cyclic siloxane, chain siloxane, and the like with these ethers is also preferably used. be able to. These solvents may be used alone or in combination of two or more at any ratio.
- thermosetting resin composition according to the present invention can be used as a resin sheet by being formed into a sheet shape in advance.
- the configuration of the resin sheet is not particularly limited.
- a single-layer sheet composed only of the thermosetting resin composition, or the above-described thermosetting resin composition on one or both sides of the film base material examples thereof include a laminate such as a two-layer sheet or a three-layer sheet provided with a resin layer, and a multilayer sheet in which a resin layer composed of a film substrate and a thermosetting resin composition are alternately laminated. Therefore, the present invention also includes a laminate including at least one resin layer formed using the thermosetting resin composition, which is different from the thermosetting resin composition alone.
- the method of forming the resin sheet is not particularly limited, but usually, the resin solution is cast or applied to the surface of a film substrate (support), and then the resin solution is dried. It may be formed into a film.
- the thermosetting resin composition is in a semi-cured state (B-stage state). Therefore, if the resin sheet in the semi-cured state is peeled off from the support, the single-layer sheet can be obtained. If the resin sheet is not peeled off, a two-layer sheet composed of a film substrate and a resin layer of a thermosetting resin composition can be obtained.
- the multilayer sheet can be manufactured by repeating a step of casting or coating the resin solution on the surface of the film substrate and thereafter drying the resin solution. Wear.
- the type of the film substrate used as the support is not particularly limited.
- a known resin film can be suitably used.
- a support other than the film base may be used. Examples of such a support include a drum and an endless belt.
- the resin layer (the layer made of the thermosetting resin composition) may be used as a single-layer sheet or as a laminate.
- the thickness of () is not particularly limited. The thickness of the resin layer should be set appropriately according to the purpose of use.
- thermosetting resin composition according to the present invention can be used to convert the above resin solution (varnish) into various fibers such as glass cloth, glass mat, aromatic polyamide fiber cloth, and aromatic polyamide fiber mat. It can also be impregnated. If the thermosetting resin composition impregnated into the fibers is semi-hardened, a fiber-reinforced resin sheet can be obtained.
- a laminate including a metal layer (a laminate containing a metal layer) can be obtained by using a metal such as copper or aluminum instead of a resin film as the film base.
- the configuration of the metal layer-containing laminate is not particularly limited, and may be a laminate including at least one resin layer made of a thermosetting resin composition and at least one metal layer. Further, the resin layer may be provided on only one side of the metal layer, or may be provided on both sides. Further, a metal layer and a resin layer may be alternately laminated.
- the metal layer-containing laminate can be produced by casting or applying a resin solution to the surface of the metal layer and drying the resin solution, but is not limited thereto. It's not something.
- it can be manufactured by laminating a metal foil on the surface of the resin layer in the single-layer sheet or the two-layer sheet obtained by the above-described method.
- it can also be produced by forming a metal layer on the surface of the resin layer in a single-layer sheet or a two-layer sheet by a method such as chemical plating or sputtering.
- the metal layer is used as a conductor of the circuit board.
- a circuit pattern circuit
- the present invention also includes a circuit board formed by using the thermosetting resin composition.
- the method of the etching treatment is not particularly limited, and a known metal etching method using a dry film resist, a liquid resist, or the like can be suitably used.
- a flexible printed wiring board can be obtained as long as the resin layer serving as the support substrate has flexibility after curing.
- the resin sheet in a semi-cured state (a sheet-like thermosetting resin composition) can be laminated.
- the resin layer When the resin layer is in a semi-cured state, it has appropriate fluidity. Therefore, by performing a heat pressing process such as a hot pressing process, a laminating process (a hot laminating process), and a hot roll laminating process, it is possible to satisfactorily embed the line between the pattern circuits with a resin (a thermosetting resin composition). it can.
- a heat pressing process such as a hot pressing process, a laminating process (a hot laminating process), and a hot roll laminating process
- the processing temperature in the thermocompression bonding is not particularly limited, but is preferably in the range of 50 ° C or more and 200 ° C or less. It is preferred that the force be in the range of 80 ° C or more and 130 ° C or less. If the processing temperature exceeds 3 ⁇ 400 ° C., the resin layer may be cured during thermocompression bonding. On the other hand, if the processing temperature is lower than 50 ° C., it becomes difficult to embed a pattern circuit in which the fluidity of the resin layer is low.
- the resin layer provided on the pattern circuit is a protective material for protecting the pattern circuit, and serves as an interlayer insulating material in a multilayer circuit board. For this reason, it is preferable that the pattern circuit is completely cured by carrying out exposure treatment, heat curing, etc. after the pattern circuit is loaded.
- the specific method of the exposure treatment and the heat curing is not particularly limited, and the method may be carried out under conditions that can sufficiently cure the resin layer, that is, the thermosetting resin composition.
- the resin layer (thermosetting resin composition) is cured, (C) after the metal layer and the resin layer are bonded together in order to sufficiently advance the curing reaction of the epoxy resin component. It is preferable to perform a boss heat treatment.
- the conditions of the post heat treatment are not particularly limited, but it is preferable to perform the heat treatment for 10 minutes to 3 hours under a temperature condition of 150 ° C. to 200 ° C.
- the laminate and the circuit board according to the present invention include the resin layer containing the above-described thermosetting resin composition. Therefore, the laminate and the resin layer of the circuit board can impart various properties such as adhesiveness, workability, handleability, heat resistance, resin fluidity, and dielectric properties with a good balance. This makes it possible to suitably manufacture a high-quality laminate or circuit board. In particular, when the laminate and the circuit board have circuits and the like, the electrical reliability of each circuit can be ensured, and a reduction in signal transmission speed and signal loss in each circuit can be suppressed.
- thermosetting resin composition according to the present invention was used as a resin sheet, its fluidity, laminability, and amount of volatile components were evaluated or calculated as follows.
- the dielectric properties and glass transition temperature of a cured resin sheet (cured resin) obtained by heating and curing the resin sheet were measured and evaluated as follows.
- the complex viscosity (Pa'S) of the resin sheet before heat curing was measured under the following conditions, and the melt viscosity was calculated from the complex viscosity. (Boys).
- the melt viscosity of each resin sheet was evaluated within the temperature range of 60 ° C. or more and 200 ° C. or less, with the lowest melt viscosity.
- the lamination property was evaluated as acceptable ( ⁇ ) when no bubble entrapment between circuits (a part where resin did not enter between circuits) was confirmed, and the laminability when bubble entrapment was confirmed was evaluated. The evaluation was made as failed (X).
- the resin sheet was placed in a sample container, and the weight change was measured under the following conditions.
- the weight that decreased within the range of 100 ° C to 300 ° C was calculated as a ratio to the weight of the resin sheet before the weight change, and was defined as the volatile component amount.
- Sample container made of aluminum
- the dielectric constant and dielectric loss tangent of the cured resin sheet were measured under the following conditions.
- Measurement frequency 3GHz, 5GHz, 10GHz,
- Measurement sample Resin sheet left for 24 hours under the above measurement temperature and measurement humidity conditions [Glass transition temperature] Using a DMS-200 (product number, manufactured by Seiko Denshi Kogyo Co., Ltd.), measure the storage elastic modulus ( ⁇ ') of the cured resin sheet under the following conditions with the measurement length (measurement jig interval) set to 20 mm. The inflection point of the storage modulus ( ⁇ ′) was defined as the glass transition temperature (° C.).
- Measurement sample Cured resin sheet slit to 9mm in width and 40mm in length
- the amount of DMF used was set so that the concentration of the monomers of APB, 3,3'-dihydroxy-4,4'-diaminobiphenyl and IPBP was 30% by weight.
- thermosetting resin composition which is powerful in the present invention.
- polyimide resin component polyimide resin obtained by the above synthesis example
- the PET film was peeled off from the two-layer sheet to obtain a single-layer sheet (resin sheet before heat curing).
- the thickness of the obtained resin sheet was 50 xm.
- the resin flowability, laminability, and the amount of volatile components of the obtained resin sheet were evaluated. The results are shown in Table 3.
- a resin sheet (before heat curing) and a cured resin sheet obtained by curing the resin sheet in the same manner as in Example 1 except that the components (A) and (D) were mixed at the ratios shown in Table 1. was obtained.
- YX4000H (trade name, manufactured by Japan Epoxy Resin Co., Ltd.) is a biphenyl type epoxy resin
- NC7000L (trade name, manufactured by Nippon Kayaku Co., Ltd.) is a naphthalene type epoxy resin. Resin.
- BAPS (manufactured by Wakayama Seika Kogyo Co., Ltd.) refers to bis [4- (4-aminophenoxy) phenyl] sulfone
- HFBAPP (manufactured by Wakayama Seikaido Kogyo) comprises 2,2-bis [4- (4-aminophenoxy) phenyl] — refers to 1,1,1,3,3,3-hexafluoropropane.
- C11Z-A (trade name, manufactured by Shikoku Kasei Kogyo Co., Ltd.) is 2,4-diamino_6_ [2, -indesylimidazolyl_ (1,)] _ ethyl_s-triazine.
- a resin sheet (before heat curing) and a cured resin sheet obtained by curing the resin sheet in the same manner as in Example 1 except that the components (A) to (D) were mixed at the ratios shown in Table 2. was obtained.
- the obtained resin sheet was evaluated for fluidity, laminability, and the amount of volatile components, and the cured resin sheet was evaluated for dielectric properties and glass transition temperature. The results are shown in Tables 3 and 4.
- thermosetting resin composition according to the present invention comprises (D) an imidazole component in addition to (A) a polyimide resin component, (B) an amine component, and (C) an epoxy resin component.
- an imidazole component in addition to (A) a polyimide resin component, (B) an amine component, and (C) an epoxy resin component.
- various properties such as (i) adhesiveness, (ii) workability and handling, (iii) heat resistance, (iv) resin fluidity and (V) dielectric properties can be realized sufficiently and in a well-balanced manner. .
- thermosetting resin composition according to the present invention has sufficient (i) adhesiveness, (ii) processability and handleability, (m) heat resistance, and Gv) resin fluidity.
- V The cured resin after curing shows a low dielectric constant and low dielectric loss tangent even in the GHz band, and can exhibit sufficient dielectric properties. Therefore, it can be suitably used for manufacturing circuit boards such as flexible printed wiring boards and build-up circuit boards. Therefore, the present invention can be suitably used in the industrial fields of various electronic parts, which are not limited to the material processing industries such as resin compositions and adhesives, and various chemical industries.
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
- Laminated Bodies (AREA)
- Epoxy Resins (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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US10/588,264 US7838114B2 (en) | 2004-02-25 | 2005-02-22 | Thermosetting resin composition and use thereof |
KR1020067016185A KR101182026B1 (ko) | 2004-02-25 | 2005-02-22 | 열경화성 수지 조성물 및 그 용도 |
JP2006510276A JP5232386B2 (ja) | 2004-02-25 | 2005-02-22 | 熱硬化性樹脂組成物およびその利用 |
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JP2004-049388 | 2004-02-25 | ||
JP2004049388 | 2004-02-25 |
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WO2005080466A1 true WO2005080466A1 (ja) | 2005-09-01 |
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PCT/JP2005/002781 WO2005080466A1 (ja) | 2004-02-25 | 2005-02-22 | 熱硬化性樹脂組成物およびその利用 |
Country Status (6)
Country | Link |
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US (1) | US7838114B2 (ja) |
JP (1) | JP5232386B2 (ja) |
KR (1) | KR101182026B1 (ja) |
CN (1) | CN100572416C (ja) |
TW (1) | TWI400268B (ja) |
WO (1) | WO2005080466A1 (ja) |
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Also Published As
Publication number | Publication date |
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KR20070018851A (ko) | 2007-02-14 |
US20080230261A1 (en) | 2008-09-25 |
TWI400268B (zh) | 2013-07-01 |
US7838114B2 (en) | 2010-11-23 |
JP5232386B2 (ja) | 2013-07-10 |
CN100572416C (zh) | 2009-12-23 |
CN1914246A (zh) | 2007-02-14 |
KR101182026B1 (ko) | 2012-09-11 |
JPWO2005080466A1 (ja) | 2007-10-25 |
TW200602375A (en) | 2006-01-16 |
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