WO2018180451A1 - エポキシ樹脂、製造方法、エポキシ樹脂組成物及びその硬化物 - Google Patents
エポキシ樹脂、製造方法、エポキシ樹脂組成物及びその硬化物 Download PDFInfo
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- WO2018180451A1 WO2018180451A1 PCT/JP2018/009660 JP2018009660W WO2018180451A1 WO 2018180451 A1 WO2018180451 A1 WO 2018180451A1 JP 2018009660 W JP2018009660 W JP 2018009660W WO 2018180451 A1 WO2018180451 A1 WO 2018180451A1
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Definitions
- the present invention is excellent in fluidity and curability, and the resulting cured product has good moisture resistance and mechanical strength, and can be suitably used for a semiconductor sealing material, a circuit board, etc., its production method, and
- the present invention relates to an epoxy resin composition containing the epoxy resin and a cured product thereof.
- Curable resin compositions using epoxy resins and various curing agents are used in adhesives, molding materials, paints, photoresist materials, color developing materials, etc., and the resulting cured products have excellent heat resistance and moisture resistance. From the point of view, it is widely used in the electrical and electronic fields such as semiconductor sealing materials and insulating materials for printed wiring boards.
- liquid sealing material As the semiconductor sealing material, a liquid sealing capable of thinly and locally sealing the semiconductor connection portion is used instead of the conventional solid sealing in accordance with the trend toward miniaturization and weight reduction of electronic devices. It is often done.
- the liquid epoxy resin used therein is required to have excellent fluidity, curability, moisture resistance, adhesiveness, mechanical strength, and insulation reliability.
- an epoxy resin that can be suitably used as a semiconductor sealing material for example, an epoxy resin having an allyl group as a substituent on an aromatic ring of a bisphenol skeleton is provided (for example, see Patent Document 1).
- the epoxy resin as a main component of the curable resin composition, a certain effect can be obtained in the fluidity of the composition and the strength of the cured product, compared with the case of using a general bisphenol type epoxy resin, but recently demanded.
- the resin composition does not sufficiently satisfy the balance level of fluidity, curability, low hygroscopicity, and mechanical strength, and further improvement is required.
- the problem to be solved by the present invention is excellent in fluidity and curability, the cured product obtained has good moisture resistance and mechanical strength, and can be suitably used for semiconductor encapsulating materials, circuit boards and the like. It is in providing an epoxy resin, its manufacturing method, and the epoxy resin composition containing the said epoxy resin, and its hardened
- the present inventors have as a main component an epoxidized product of dihydroxybenzene which may have an alkyl group having 1 to 8 carbon atoms as a substituent on the aromatic ring.
- an epoxy resin having an area ratio of the maximum peak in GPC measurement of 90% or more is used as one component of the curable composition, the balance of moldability, heat resistance, mechanical strength at the time of heat curing, etc.
- the present invention has been found to be excellent, and the present invention has been completed.
- the present invention relates to an epoxy resin (A) mainly composed of an epoxidized product of dihydroxybenzene which may have an alkyl group having 1 to 8 carbon atoms as a substituent on an aromatic ring.
- An epoxy resin having a maximum peak area ratio of 90% or more, a method for producing the epoxy resin, an epoxy resin composition containing the epoxy resin, and a cured product thereof are provided.
- an epoxy resin that is excellent in fluidity and curability has good moisture resistance and mechanical strength of the resulting cured product, and can be suitably used for semiconductor sealing materials, circuit boards, and the like, and a method for producing the same
- FIG. 1 is a GPC chart of the epoxy resin (A′-1) obtained in Synthesis Example 1.
- FIG. 2 is a GPC chart of the epoxy resin (A-1) obtained in Example 1.
- the epoxy resin of the present invention is an epoxy resin (A) mainly composed of an epoxidized product of dihydroxybenzene which may have an alkyl group having 1 to 8 carbon atoms as a substituent on an aromatic ring, and measured by GPC The area ratio of the maximum peak at is 90% or more.
- Examples of the dihydroxybenzene optionally having an alkyl group having 1 to 8 carbon atoms as a substituent on the aromatic ring include a linear or branched chain having 1 to 8 carbon atoms on the aromatic ring of catechol, resorcinol and hydroquinone. Having 1 to 4 alkyl groups.
- the obtained epoxy resin has a low viscosity and has an alkyl group on the aromatic ring of catechol from the viewpoint of easy availability of raw materials.
- epoxy resin for example, the following structural formula (1)
- R 1 is a hydrogen atom or an alkyl group having 1 to 8 carbon atoms
- R is a hydrogen atom or a glycidyl group
- m is 1 to 4
- n represents the number of repetitions
- the average value is 0.01 to 5
- R, R 1 and m may be the same or different for each repetition.
- R 1 is a butyl group or an octyl group from the viewpoint of availability of raw materials and curability.
- R 1 is a butyl group or an octyl group from the viewpoint of availability of raw materials and curability.
- t-butyl group and t-octyl group are preferable.
- m in the case where R 1 is an alkyl group is preferably 0 to 2, and particularly preferably 1.
- n is more preferably in the range of 0.01 to 2
- the crosslinking density during the curing reaction is appropriately adjusted due to its bulkiness, and moisture resistance after heat curing And mechanical strength, and the balance of their durability is considered to be excellent.
- a cured product is obtained using a curing agent as described later, it is a t-butyl group from the viewpoint that the curing reaction proceeds well and the crosslinking density of the cured product is easily set in a more appropriate range.
- the butyldihydroxybenzene is most preferably t-butylcatechol.
- the epoxy resin of the present invention is characterized in that the area ratio of the maximum peak in GPC measurement is 90% or more.
- the GPC measurement in the present invention is the following method. ⁇ GPC measurement conditions> Measuring device: “HLC-8320 GPC” manufactured by Tosoh Corporation Column: Guard column “HXL-L” manufactured by Tosoh Corporation + “TSK-GEL G2000HXL” manufactured by Tosoh Corporation + “TSK-GEL G2000HXL” manufactured by Tosoh Corporation + Tosoh Corporation “TSK-GEL G3000HXL” + “TSK-GEL G4000HXL” manufactured by Tosoh Corporation Detector: RI (differential refractometer) Data processing: “GPC workstation EcoSEC-WorkStation” manufactured by Tosoh Corporation Measurement conditions: Column temperature 40 ° C Developing solvent Tetrahydrofuran Flow rate 1.0 ml / min Standard: The following monodisperse polystyrene having a known molecular weight was used in accordance with the measurement manual of “GPC workstation EcoSEC-WorkStation”.
- the peak is mainly split by the molecular weight, but in the present invention, the peak area ratio at which the area ratio is maximized is 90% or more, preferably 93% or more. It is characterized by that.
- the content of impurities such as chlorine is reduced and it can be suitably used in the electrical and electronic fields such as semiconductor encapsulants.
- a compound having a cyclic structure containing an oxygen atom derived from it or a compound in which one hydroxyl group is not glycidylated and remains as a hydroxyl group is not separated under the GPC measurement conditions.
- the epoxy equivalent is in the range of 190 to 205 g / eq. It is preferable. By setting the epoxy equivalent within this range, it is easy to make the cured product excellent in moisture resistance of the cured product while having appropriate curability and viscosity and good handling.
- the viscosity of the epoxy resin (A) at 25 ° C. is preferably in the range of 400 to 1000 mPa ⁇ s from the viewpoint of more excellent fluidity.
- the total chlorine content of the epoxy resin (A) of the present invention is particularly preferably 2000 ppm or less when used for electrical materials, and most preferably 1500 ppm or less.
- epoxy equivalent of the epoxy resin (A) in this invention a viscosity, and total chlorine content are measured with the following method.
- the epoxy resin (A) of the present invention is obtained by GPC measurement from an epoxidized product of dihydroxybenzene which may have an alkyl group having 1 to 8 carbon atoms as a substituent on the aromatic ring. Requires a purification step such as fractionation of a specific compound contained in the maximum peak in.
- the dihydroxybenzene which may have an alkyl group having 1 to 8 carbon atoms as a substituent on the aromatic ring is a compound as described above, and it may be composed of only one kind. You may mix and use the above. Among these, from the viewpoint of the balance between the fluidity of the resulting epoxy resin and the mechanical strength of the cured product, it is preferable that the alkyl group has a higher bulk structure and the hydroxyl groups are adjacent to each other. Most preferably, butylcatechol is used.
- the raw material dihydroxybenzene is reacted with epihalohydrin for epoxidation.
- epihalohydrin is added in an amount of 1 to 10 mol with respect to 1 mol of hydroxyl group contained in the raw material, and 0.9 to 2.0 mol of basic catalyst is added in batch with respect to 1 mol of raw material butyldihydroxybenzenes.
- the basic catalyst may be solid or an aqueous solution thereof. When an aqueous solution is used, it is continuously added and water and epihalohydrins are continuously distilled from the reaction mixture under reduced pressure or normal pressure. The solution may be taken out and further separated to remove water and the epihalohydrins are continuously returned to the reaction mixture.
- the epihalohydrin used for preparation is not particularly limited, and examples thereof include epichlorohydrin, epibromohydrin, ⁇ -methylepichlorohydrin, and the like. Among these, epichlorohydrin is preferable because it is easily available industrially.
- the basic catalyst include alkaline earth metal hydroxides, alkali metal carbonates, and alkali metal hydroxides.
- alkali metal hydroxides are preferable from the viewpoint of excellent catalytic activity of the epoxy resin synthesis reaction, and examples thereof include sodium hydroxide and potassium hydroxide.
- these basic catalysts may be used in the form of an aqueous solution of about 10% to 55% by weight or in the form of a solid.
- combination of an epoxy resin can be raised by using an organic solvent together.
- organic solvents examples include, but are not limited to, ketones such as acetone and methyl ethyl ketone, alcohols such as methanol, ethanol, 1-propyl alcohol, isopropyl alcohol, 1-butanol, secondary butanol, and tertiary butanol, methyl
- examples include cellosolves such as cellosolve and ethyl cellosolve, ethers such as tetrahydrofuran, 1,4-dioxane, 1,3-dioxane and diethoxyethane, and aprotic polar solvents such as acetonitrile, dimethyl sulfoxide and dimethylformamide.
- ketones such as acetone and methyl ethyl ketone
- alcohols such as methanol, ethanol, 1-propyl alcohol, isopropyl alcohol, 1-butanol, secondary butanol, and tertiary butanol, methyl
- the amount used is preferably in the range of 0.1% by mass to 3.0% by mass with respect to the epoxy resin used.
- the produced salt is removed by filtration, washing with water, etc., and further, an epoxidized product can be obtained by distilling off a solvent such as toluene and methyl isobutyl ketone under heating and reduced pressure.
- the epoxidized product obtained above contains a high molecular weight component and a compound formed by bonding a halogen atom derived from epihalohydrin without forming an epoxy ring.
- a component is contained in a certain amount or more, the flowability as an epoxy resin is insufficient, and the curability may be hindered, or it may have an adverse effect when used for electrical materials, etc.
- Examples of the purification method include a method of fractionating a compound contained in the maximum peak in the GPC measurement of the epoxy resin (A) using a column or the like, and a conventionally known method such as an aprotic polar solvent for an epoxidized product. Next, a base is added to this solution and reacted to remove halogen impurities contained in the epoxidized product, and by dissolving in a solvent such as toluene and hexane to separate and remove insoluble parts. Examples include a method of combining high-molecular weight component removal methods, and a more industrially superior method is a distillation purification method. The distillation purification method is preferable because it can simultaneously remove a high molecular weight component and a subcomponent containing a large amount of halogen atoms.
- the hydrolyzable chlorine content in the epoxidized product before distillation is preferably adjusted to 600 ppm or less, more preferably 400 ppm or less. It is preferable to adjust various reaction conditions. However, if the processing conditions are too severe, side reactions such as high molecular weight increase and the yield in the distillation purification step decreases, so that the epoxy equivalent of the epoxidized product is 300 g / eq or less, preferably 250 g / eq. It is preferable to adjust various reaction conditions so as to be as follows.
- by-product salts and the like can be removed by filtration or washing with water.
- alkali metal hydroxide remains, there is a risk of causing polymerization or gelation during distillation.
- volatile components such as organic solvent and water are removed by a method such as distillation under reduced pressure.
- the distillation purification step is a step of obtaining a high-purity and low-viscosity epoxy resin by distilling the epoxidized product obtained as described above and removing a polymer compound, an inorganic compound, a halogen atom-containing compound, and the like. .
- a distillation kettle continuous distillation using a rotary evaporator, etc.
- thin film molecular distillation such as a disk type and a falling film type.
- the distillation conditions vary depending on the quality of the epoxidized product at the end of the previous step, the boiling point of impurities to be removed, etc., but the normal temperature is 130 ° C.
- the residence time is that of batch distillation. In the case of 30 minutes to 5 hours, in the case of continuous distillation, 0.5 minutes to 10 minutes, and the pressure is 0.001 Torr to 1 Torr.
- Epoxy resin composition The epoxy resin (A) of the present invention can be used in combination with a curing agent.
- a curable epoxy resin composition can be produced by blending a curing agent with the epoxy resin (A).
- curing agents examples include various known curing agents for epoxy resins such as amine compounds, amide compounds, acid anhydride compounds, and phenol compounds.
- examples of the amine compound include diaminodiphenylmethane, diethylenetriamine, triethylenetetramine, diaminodiphenylsulfone, isophoronediamine, imidazole, BF 3 -amine complex, and guanidine derivative.
- examples of the amide compound include dicyandiamide. And a polyamide resin synthesized from a dimer of linolenic acid and ethylenediamine.
- Acid anhydride compounds include phthalic anhydride, trimellitic anhydride, pyromellitic anhydride, maleic anhydride, tetrahydrophthalic anhydride, methyltetrahydrophthalic anhydride, methyl nadic anhydride, hexahydrophthalic anhydride, methylhexahydro And phthalic anhydride.
- Phenol compounds include phenol novolac resin, cresol novolac resin, aromatic hydrocarbon formaldehyde resin-modified phenol resin, dicyclopentadiene phenol addition resin, phenol aralkyl resin (Zylok resin), naphthol aralkyl resin, triphenylol methane resin, Tetraphenylolethane resin, naphthol novolak resin, naphthol-phenol co-condensed novolak resin, naphthol-cresol co-condensed novolak resin, biphenyl-modified phenol resin (polyphenolic hydroxyl group-containing compound in which phenol nucleus is linked by bismethylene group), biphenyl Modified naphthol resin (polyvalent naphthol compound in which phenol nucleus is linked by bismethylene group), aminotriazine modified phenol resin (melamine, benzo Polyhydric phenolic hydroxyl group-containing compounds in which phenol nuclei are linked with anamin, etc.
- an epoxy resin (C) other than the epoxy resin (A) specified above can be used in combination with the epoxy resin composition of the present invention as long as the effects of the present invention are not impaired.
- epoxy resin (C) examples include bisphenol A type epoxy resins, bisphenol F type epoxy resins, biphenyl type epoxy resins, tetramethylbiphenyl type epoxy resins, polyhydroxynaphthalene type epoxy resins, phenol novolac type epoxy resins, and cresol novolacs.
- Type epoxy resin triphenylmethane type epoxy resin, tetraphenylethane type epoxy resin, dicyclopentadiene-phenol addition reaction type epoxy resin, phenol aralkyl type epoxy resin, naphthol novolak type epoxy resin, naphthol aralkyl type epoxy resin, naphthol-phenol Co-condensed novolac-type epoxy resin, naphthol-cresol co-condensed novolac-type epoxy resin, aromatic hydrocarbon formaldehyde resin-modified pheno Resin type epoxy resins, biphenyl-modified novolak type epoxy resins.
- epoxy resins in particular, in terms of obtaining a cured product having excellent thermal modulus and molding shrinkage rate, it is preferable to use a novolac type epoxy resin, and in terms of obtaining a cured product having excellent flame retardancy. It is preferable to use tetramethylbiphenol type epoxy resin, biphenyl aralkyl type epoxy resin, polyhydroxynaphthalene type epoxy resin, and dicyclopentadiene-phenol addition reaction type epoxy resin is preferable in that a cured product having excellent dielectric properties can be obtained. preferable.
- the epoxy resin (A) of the present invention is 20 to 100 parts by mass with respect to 100 parts by mass in total of the epoxy resin (A) and the epoxy resin (C). It is preferable from the viewpoint that the effects of the present invention can be easily expressed.
- the compounding amount of the epoxy resin (A) and the curing agent is in the epoxy resin (C) used in combination with the epoxy resin (A) as necessary from the viewpoint of excellent curability. It is preferable that the total amount of active groups in the curing agent is 0.8 to 1.2 equivalents with respect to 1 equivalent of the total epoxy groups.
- the epoxy resin composition may be used in combination with other thermosetting resins.
- thermosetting resins examples include cyanate ester resins, resins having a benzoxazine structure, maleimide compounds, active ester resins, vinyl benzyl compounds, acrylic compounds, and copolymers of styrene and maleic anhydride.
- the amount used is not particularly limited as long as the effect of the present invention is not impaired, but it is in the range of 1 to 50 parts by mass in 100 parts by mass of the thermosetting resin composition. It is preferable that
- cyanate ester resin examples include bisphenol A type cyanate ester resin, bisphenol F type cyanate ester resin, bisphenol E type cyanate ester resin, bisphenol S type cyanate ester resin, bisphenol sulfide type cyanate ester resin, and phenylene ether type cyanate ester resin.
- cyanate ester resins bisphenol A-type cyanate ester resins, bisphenol F-type cyanate ester resins, bisphenol E-type cyanate ester resins, and polyhydroxynaphthalene-type cyanate ester resins are particularly preferred in that a cured product having excellent heat resistance can be obtained.
- a naphthylene ether type cyanate ester resin or a novolak type cyanate ester resin is preferably used, and a dicyclopentadiene-phenol addition reaction type cyanate ester resin is preferred in that a cured product having excellent dielectric properties can be obtained.
- the resin having a benzoxazine structure is not particularly limited.
- a reaction product of bisphenol F, formalin, and aniline Fa type benzoxazine resin
- a reaction product of diaminodiphenylmethane, formalin, and phenol P- d-type benzoxazine resin
- reaction product of bisphenol A, formalin and aniline reaction product of dihydroxydiphenyl ether, formalin and aniline
- reaction product of diaminodiphenyl ether, formalin and phenol dicyclopentadiene-phenol addition resin and formalin Reaction product of phenol and aniline
- reaction product of phenolphthalein, formalin and aniline reaction product of diphenyl sulfide, formalin and aniline.
- maleimide compound examples include various compounds represented by any of the following structural formulas (i) to (iii).
- R is an m-valent organic group
- ⁇ and ⁇ are each a hydrogen atom, a halogen atom, an alkyl group, or an aryl group, and s is an integer of 1 or more.
- R is a hydrogen atom, an alkyl group, an aryl group, an aralkyl group, a halogen atom, a hydroxyl group or an alkoxy group, s is an integer of 1 to 3, and t is an average of 0 to 10 repeating units.
- R is a hydrogen atom, an alkyl group, an aryl group, an aralkyl group, a halogen atom, a hydroxyl group or an alkoxy group, s is an integer of 1 to 3, and t is an average of 0 to 10 repeating units.
- the active ester resin is not particularly limited, but generally an ester group having high reaction activity, such as phenol esters, thiophenol esters, N-hydroxyamine esters, and esters of heterocyclic hydroxy compounds, is contained in one molecule. A compound having two or more is preferably used.
- the active ester resin is preferably obtained by a condensation reaction between a carboxylic acid compound and / or a thiocarboxylic acid compound and a hydroxy compound and / or a thiol compound.
- an active ester resin obtained from a carboxylic acid compound or a halide thereof and a hydroxy compound is preferred, and an active ester resin obtained from a carboxylic acid compound or a halide thereof and a phenol compound and / or a naphthol compound is preferred. More preferred.
- the carboxylic acid compound include benzoic acid, acetic acid, succinic acid, maleic acid, itaconic acid, phthalic acid, isophthalic acid, terephthalic acid, pyromellitic acid, and the like, or a halide thereof.
- phenol compounds or naphthol compounds include hydroquinone, resorcin, bisphenol A, bisphenol F, bisphenol S, dihydroxydiphenyl ether, phenolphthalein, methylated bisphenol A, methylated bisphenol F, methylated bisphenol S, phenol, o-cresol, m -Cresol, p-cresol, catechol, ⁇ -naphthol, ⁇ -naphthol, 1,5-dihydroxynaphthalene, 1,6-dihydroxynaphthalene, 2,6-dihydroxynaphthalene, dihydroxybenzophenone, trihydroxybenzophenone, tetrahydroxybenzophenone, phloroglucin Benzenetriol, dicyclopentadiene-phenol addition resin, and the like.
- the active ester resin examples include an active ester resin containing a dicyclopentadiene-phenol addition structure, an active ester resin containing a naphthalene structure, an active ester resin that is an acetylated product of phenol novolac, and an activity that is a benzoylated product of phenol novolac.
- An ester resin or the like is preferable, and an active ester resin having a dicyclopentadiene-phenol addition structure and an active ester resin having a naphthalene structure are more preferable because they are excellent in improving peel strength.
- examples of the active ester resin containing a dicyclopentadiene-phenol addition structure include compounds represented by the following general formula (iv).
- R represents a phenyl group or a naphthyl group
- u represents 0 or 1
- n represents an average of 0.05 to 2.5 repeating units.
- R is preferably a naphthyl group
- u is preferably 0, and n is preferably 0.25 to 1.5.
- the curing of the epoxy resin composition of the present invention proceeds only with the epoxy resin composition, but a curing accelerator may be used in combination.
- Curing accelerators include tertiary amine compounds such as imidazole and dimethylaminopyridine; phosphorus compounds such as triphenylphosphine; boron trifluoride amine complexes such as boron trifluoride and trifluoride monoethylamine complexes; thiodipropion Organic acid compounds such as acids; benzoxazine compounds such as thiodiphenol benzoxazine and sulfonyl benzoxazine; sulfonyl compounds and the like. These may be used alone or in combination of two or more.
- the addition amount of these catalysts is preferably in the range of 0.001 to 15 parts by mass per 100 parts by mass of the epoxy resin composition.
- a non-halogen flame retardant containing substantially no halogen atom may be blended.
- non-halogen flame retardant examples include a phosphorus flame retardant, a nitrogen flame retardant, a silicone flame retardant, an inorganic flame retardant, an organic metal salt flame retardant, and the like. It is not intended to be used alone, and a plurality of the same type of flame retardants may be used, or different types of flame retardants may be used in combination.
- the phosphorous flame retardant can be either inorganic or organic.
- the inorganic compounds include red phosphorus, monoammonium phosphate, diammonium phosphate, triammonium phosphate, ammonium phosphates such as ammonium polyphosphate, and inorganic nitrogen-containing phosphorus compounds such as phosphate amide. .
- the red phosphorus is preferably subjected to a surface treatment for the purpose of preventing hydrolysis and the like.
- the surface treatment method include (i) magnesium hydroxide, aluminum hydroxide, zinc hydroxide, water A method of coating with an inorganic compound such as titanium oxide, bismuth oxide, bismuth hydroxide, bismuth nitrate or a mixture thereof; (ii) an inorganic compound such as magnesium hydroxide, aluminum hydroxide, zinc hydroxide, titanium hydroxide; and A method of coating with a mixture of a thermosetting resin such as a phenol resin, (iii) thermosetting of a phenol resin or the like on a coating of an inorganic compound such as magnesium hydroxide, aluminum hydroxide, zinc hydroxide, or titanium hydroxide
- a method of double coating with a resin may be used.
- organic phosphorus compounds examples include 9,10-dihydro, as well as general-purpose organic phosphorus compounds such as phosphate ester compounds, phosphonic acid compounds, phosphinic acid compounds, phosphine oxide compounds, phosphorane compounds, and organic nitrogen-containing phosphorus compounds.
- the amount of these phosphorus-based flame retardants is appropriately selected depending on the type of phosphorus-based flame retardant, the other components of the resin composition, and the desired degree of flame retardancy.
- non-halogen flame retardants And 100 parts by mass of resin composition containing all other fillers and additives, etc.
- red phosphorus is used as a non-halogen flame retardant, it is blended in the range of 0.1 to 2.0 parts by mass.
- organic phosphorus compound it is preferably blended in the range of 0.1 parts by mass to 10.0 parts by mass, and blended in the range of 0.5 parts by mass to 6.0 parts by mass. More preferably.
- the phosphorus flame retardant when using the phosphorus flame retardant, may be used in combination with hydrotalcite, magnesium hydroxide, boron compound, zirconium oxide, black dye, calcium carbonate, zeolite, zinc molybdate, activated carbon, etc. Good.
- nitrogen flame retardant examples include triazine compounds, cyanuric acid compounds, isocyanuric acid compounds, phenothiazines, and the like, and triazine compounds, cyanuric acid compounds, and isocyanuric acid compounds are preferable.
- triazine compound examples include melamine, acetoguanamine, benzoguanamine, melon, melam, succinoguanamine, ethylene dimelamine, melamine polyphosphate, triguanamine, and the like, for example, (1) guanylmelamine sulfate, melem sulfate, melam sulfate (2) Cocondensates of phenols such as phenol, cresol, xylenol, butylphenol and nonylphenol with melamines such as melamine, benzoguanamine, acetoguanamine and formguanamine and formaldehyde, (3) (2) A mixture of a co-condensate and a phenol resin such as a phenol formaldehyde condensate, (4) those obtained by further modifying (2) and (3) above with paulownia oil, isomerized linseed oil or the like.
- cyanuric acid compound examples include cyanuric acid and melamine cyanurate.
- the amount of the nitrogen-based flame retardant is appropriately selected depending on the type of the nitrogen-based flame retardant, the other components of the resin composition, and the desired degree of flame retardancy.
- a non-halogen flame retardant in 100 parts by mass of the resin composition in which all other fillers and additives are blended, it is preferably blended in the range of 0.05 to 10 parts by weight, and blended in the range of 0.1 to 5 parts by weight. More preferably.
- a metal hydroxide, a molybdenum compound or the like may be used in combination.
- the silicone flame retardant is not particularly limited as long as it is an organic compound containing a silicon atom, and examples thereof include silicone oil, silicone rubber, and silicone resin.
- the amount of the silicone-based flame retardant is appropriately selected according to the type of the silicone-based flame retardant, the other components of the resin composition, and the desired degree of flame retardancy.
- a non-halogen flame retardant In addition, it is preferably blended in the range of 0.05 to 20 parts by mass in 100 parts by mass of the resin composition in which all other fillers and additives are blended.
- inorganic flame retardant examples include metal hydroxide, metal oxide, metal carbonate compound, metal powder, boron compound, and low melting point glass.
- metal hydroxide examples include aluminum hydroxide, magnesium hydroxide, dolomite, hydrotalcite, calcium hydroxide, barium hydroxide, and zirconium hydroxide.
- metal oxide examples include zinc molybdate, molybdenum trioxide, zinc stannate, tin oxide, aluminum oxide, iron oxide, titanium oxide, manganese oxide, zirconium oxide, zinc oxide, molybdenum oxide, cobalt oxide, bismuth oxide, Examples thereof include chromium oxide, nickel oxide, copper oxide, and tungsten oxide.
- metal carbonate compound examples include zinc carbonate, magnesium carbonate, calcium carbonate, barium carbonate, basic magnesium carbonate, aluminum carbonate, iron carbonate, cobalt carbonate, and titanium carbonate.
- metal powder examples include aluminum, iron, titanium, manganese, zinc, molybdenum, cobalt, bismuth, chromium, nickel, copper, tungsten, and tin.
- Examples of the boron compound include zinc borate, zinc metaborate, barium metaborate, boric acid, and borax.
- low-melting-point glass examples include Shipley (Bokusui Brown), hydrated glass SiO 2 —MgO—H 2 O, PbO—B 2 O 3 system, ZnO—P 2 O 5 —MgO system, and P 2 O 5. Glassy compounds such as —B 2 O 3 —PbO—MgO, P—Sn—O—F, PbO—V 2 O 5 —TeO 2 , Al 2 O 3 —H 2 O, and lead borosilicate Can be mentioned.
- the blending amount of the inorganic flame retardant is appropriately selected according to the type of the inorganic flame retardant, the other components of the resin composition, and the desired degree of flame retardancy.
- a non-halogen flame retardant in 100 parts by mass of the resin composition in which all other fillers and additives are blended, it is preferably blended in the range of 0.05 to 20 parts by weight, and in the range of 0.5 to 15 parts by weight. It is more preferable to mix with.
- organic metal salt flame retardant examples include ferrocene, acetylacetonate metal complex, organic metal carbonyl compound, organic cobalt salt compound, organic sulfonic acid metal salt, metal atom and aromatic compound or heterocyclic compound. And the like.
- the amount of the organic metal salt flame retardant is appropriately selected depending on the type of the organic metal salt flame retardant, the other components of the resin composition, and the desired degree of flame retardancy. It is preferably blended in the range of 0.005 to 10 parts by mass in 100 parts by mass of the resin composition containing all of the halogen-based flame retardant and other fillers and additives.
- the epoxy resin composition of the present invention can be blended with an inorganic filler as necessary.
- the inorganic filler include fused silica, crystalline silica, alumina, silicon nitride, and aluminum hydroxide.
- fused silica When particularly increasing the blending amount of the inorganic filler, it is preferable to use fused silica.
- the fused silica can be used in either a crushed shape or a spherical shape. However, in order to increase the blending amount of the fused silica and suppress an increase in the melt viscosity of the molding material, it is preferable to mainly use a spherical shape.
- the filling rate is preferably higher in consideration of flame retardancy, and particularly preferably 20% by mass or more with respect to the total mass of the epoxy resin composition.
- electroconductive fillers such as silver powder and copper powder, can be used.
- the epoxy resin composition of the present invention may contain various compounding agents such as a silane coupling agent, a release agent, a pigment, and an emulsifier, if necessary.
- the epoxy resin composition of the present invention can be applied to semiconductor sealing materials, semiconductor devices, prepregs, printed circuit boards, build-up boards, build-up films, fiber reinforced composite materials, fiber reinforced resin molded products, conductive pastes, and the like. it can.
- Semiconductor encapsulating material As a method of obtaining a semiconductor encapsulating material from the epoxy resin composition of the present invention, the epoxy resin composition, the curing accelerator, and compounding agents such as an inorganic filler, if necessary, an extruder, A method of sufficiently melting and mixing until uniform using a kneader, a roll or the like can be mentioned. At that time, fused silica is usually used as the inorganic filler, but when used as a high thermal conductive semiconductor encapsulant for power transistors and power ICs, crystalline silica, alumina, nitridation having higher thermal conductivity than fused silica.
- High filling such as silicon, or fused silica, crystalline silica, alumina, silicon nitride, or the like may be used.
- the filling rate is preferably in the range of 30% to 95% by weight of inorganic filler per 100 parts by weight of the epoxy resin composition. Among them, flame retardancy, moisture resistance and solder crack resistance are improved, and linear expansion is achieved.
- the amount is more preferably 70 parts by mass or more, and further preferably 80 parts by mass or more.
- the semiconductor encapsulating material is cast or molded using a transfer molding machine, an injection molding machine or the like, and further at 50 to 200 ° C. for 2 to The method of heating for 10 hours is mentioned.
- a curable resin composition that has been varnished by blending an organic solvent is used as a reinforcing substrate (paper, glass cloth, glass nonwoven fabric, aramid paper, aramid cloth, Examples thereof include a method obtained by impregnating a glass mat, a glass roving cloth, etc.) and then heating at a heating temperature according to the solvent type used, preferably 50 to 170 ° C.
- the mass ratio of the resin composition and the reinforcing substrate used at this time is not particularly limited, but it is usually preferable that the resin content in the prepreg is adjusted to 20 mass% to 60 mass%.
- organic solvent used here examples include methyl ethyl ketone, acetone, dimethylformamide, methyl isobutyl ketone, methoxy propanol, cyclohexanone, methyl cellosolve, ethyl diglycol acetate, propylene glycol monomethyl ether acetate, etc.
- a polar solvent having a boiling point of 160 ° C. or lower such as methyl ethyl ketone, acetone, dimethylformamide, etc.
- the non-volatile content is preferably 40% by mass to 80% by mass.
- Printed Circuit Board As a method for obtaining a printed circuit board from the epoxy resin composition of the present invention, the prepreg is laminated by a conventional method, and a copper foil is appropriately stacked, and the pressure is applied at 170 to 300 ° C. under a pressure of 1 to 10 MPa. A method of heat-pressing for minutes to 3 hours can be mentioned.
- step 1 As a method for obtaining a build-up substrate from the epoxy resin composition of the present invention, a method through steps 1 to 3 can be mentioned.
- step 1 first, the curable resin composition appropriately blended with rubber, filler, and the like is applied to a circuit board on which a circuit is formed using a spray coating method, a curtain coating method, or the like, and then cured.
- step 2 if necessary, after drilling a predetermined through-hole portion or the like on the circuit board coated with the epoxy resin composition, it is treated with a roughening agent, and the surface is washed with hot water, Irregularities are formed on the substrate, and a metal such as copper is plated.
- step 3 the operations in steps 1 and 2 are sequentially repeated as desired, and the build-up substrate is molded by alternately building up the resin insulating layer and the conductor layer having a predetermined circuit pattern.
- the through-hole portion is preferably formed after the outermost resin insulating layer is formed.
- the build-up board of the present invention is obtained by subjecting a copper foil with a resin obtained by semi-curing the resin composition on a copper foil to thermocompression bonding at 170 to 300 ° C. on a wiring board on which a circuit is formed. It is also possible to produce a build-up substrate by forming the chemical surface and omitting the plating process.
- Build-up film As a method for obtaining a build-up film from the epoxy resin composition of the present invention, for example, a curable resin composition is applied on a support film and then dried to form a resin composition layer on the support film. The method of forming is mentioned.
- the film softens under the temperature condition of the laminate in the vacuum laminating method (usually 70 ° C. to 140 ° C.) and exists on the circuit board at the same time as the circuit board lamination It is important to show fluidity (resin flow) that allows resin filling in the via hole or through hole to be formed, and it is preferable to blend the above-described components so as to exhibit such characteristics.
- the diameter of the through hole of the circuit board is usually 0.1 to 0.5 mm, and the depth is usually 0.1 to 1.2 mm, and it is preferable that the resin can be filled in this range.
- an epoxy resin composition that has been varnished by blending an organic solvent is prepared, and then the composition is applied to the surface of the support film (Y).
- a method of forming the layer (X) of the epoxy resin composition by drying the organic solvent by heating, hot air blowing or the like can be mentioned.
- organic solvent used herein examples include ketones such as acetone, methyl ethyl ketone, and cyclohexanone, acetates such as ethyl acetate, butyl acetate, cellosolve acetate, propylene glycol monomethyl ether acetate, and carbitol acetate, cellosolve, butyl carbitol, and the like.
- ketones such as acetone, methyl ethyl ketone, and cyclohexanone
- acetates such as ethyl acetate, butyl acetate, cellosolve acetate, propylene glycol monomethyl ether acetate, and carbitol acetate, cellosolve, butyl carbitol, and the like.
- Carbitols, aromatic hydrocarbons such as toluene and xylene, dimethylformamide, dimethylacetamide, N-methylpyrrolidone, etc. are preferably
- the thickness of the layer (X) of the resin composition to be formed usually needs to be equal to or greater than the thickness of the conductor layer. Since the thickness of the conductor layer of the circuit board is usually in the range of 5 to 70 ⁇ m, the thickness of the resin composition layer is preferably 10 to 100 ⁇ m.
- the layer (X) of the resin composition in the present invention may be protected by a protective film described later. By protecting with a protective film, it is possible to prevent dust and the like from being attached to the surface of the resin composition layer and scratches.
- the above-mentioned support film and protective film are made of polyolefin such as polyethylene, polypropylene and polyvinyl chloride, polyethylene terephthalate (hereinafter sometimes abbreviated as “PET”), polyester such as polyethylene naphthalate, polycarbonate, polyimide, and further. Examples thereof include metal foil such as pattern paper, copper foil, and aluminum foil.
- the support film and the protective film may be subjected to a release treatment in addition to the mud treatment and the corona treatment.
- the thickness of the support film is not particularly limited, but is usually 10 to 150 ⁇ m, and preferably 25 to 50 ⁇ m.
- the thickness of the protective film is preferably 1 to 40 ⁇ m.
- the support film (Y) described above is peeled off after being laminated on a circuit board or after forming an insulating layer by heat curing. If the support film (Y) is peeled after the epoxy resin composition layer constituting the build-up film is heat-cured, adhesion of dust and the like in the curing process can be prevented. In the case of peeling after curing, the support film is usually subjected to a release treatment in advance.
- a multilayer printed circuit board can be manufactured from the buildup film obtained as mentioned above.
- the layer (X) of the resin composition is protected by a protective film, after peeling off these layers, one side or both sides of the circuit board so that the layer (X) of the resin composition is in direct contact with the circuit board
- lamination is performed by a vacuum laminating method.
- the laminating method may be a batch method or a continuous method using a roll. If necessary, the build-up film and the circuit board may be heated (preheated) as necessary before lamination.
- the laminating conditions are preferably a pressure bonding temperature (lamination temperature) of 70 to 140 ° C.
- Fiber Reinforced Composite Material As a method for obtaining a fiber reinforced composite material (a sheet-like intermediate material in which a resin is impregnated with a reinforced fiber) from the epoxy resin composition of the present invention, the components constituting the epoxy resin composition are uniformly mixed. Then, after preparing a varnish, and then impregnating the varnish into a reinforcing base material composed of reinforcing fibers, a method of producing it by a polymerization reaction may be mentioned.
- the curing temperature at the time of carrying out such a polymerization reaction is preferably in the temperature range of 50 to 250 ° C., in particular, after curing at 50 to 100 ° C. to obtain a tack-free cured product,
- the treatment is preferably performed at a temperature of 120 to 200 ° C.
- the reinforcing fiber may be any of a twisted yarn, an untwisted yarn, and a non-twisted yarn, but the untwisted yarn and the untwisted yarn are preferable since both the moldability and the mechanical strength of the fiber-reinforced plastic member are compatible.
- the form of a reinforced fiber can use what the fiber direction arranged in one direction, and a textile fabric.
- the woven fabric can be freely selected from plain weaving, satin weaving, and the like according to the site and use. Specifically, since it is excellent in mechanical strength and durability, carbon fiber, glass fiber, aramid fiber, boron fiber, alumina fiber, silicon carbide fiber and the like can be mentioned, and two or more of these can be used in combination.
- carbon fiber is preferable from the viewpoint that the strength of the molded product is particularly good.
- the carbon fiber various types such as polyacrylonitrile-based, pitch-based, and rayon-based can be used. Among these, a polyacrylonitrile-based one that can easily obtain a high-strength carbon fiber is preferable.
- the amount of reinforcing fibers used when a reinforced varnish made of reinforcing fibers is impregnated into a fiber-reinforced composite material is such that the volume content of the reinforcing fibers in the fiber-reinforced composite material is 40% to 85%. It is preferable that the amount be in the range.
- Fiber-reinforced resin molded product As a method for obtaining a fiber-reinforced molded product (molded product obtained by curing a sheet-like member impregnated with a reinforced fiber with a resin) from the epoxy resin composition of the present invention, a fiber aggregate is laid on a mold, and the varnish is used. Using either the hand lay-up method, spray-up method, male type, or female type, in which multiple layers are laminated, the base material made of reinforcing fibers is stacked while being impregnated with varnish, and the pressure is applied to the molded product.
- a vacuum bag method that covers a flexible mold that can be sealed and vacuum-tightly seals what is hermetically sealed, a SMC press method that compresses and molds a varnish containing reinforcing fibers in advance in a sheet,
- a prepreg in which reinforcing fibers are impregnated with the varnish is manufactured by an RTM method in which the varnish is injected into a spread mold, and this is used as a large autoclay.
- a method of baking and solidifying with a bush is a molded product having a reinforced fiber and a cured product of the epoxy resin composition.
- the amount of the reinforced fiber in the fiber reinforced molded product is 40 The range is preferably from mass% to 70 mass%, particularly preferably from 50 mass% to 70 mass% from the viewpoint of strength.
- Electrically conductive paste As a method of obtaining an electrically conductive paste from the epoxy resin composition of this invention, the method of disperse
- the conductive paste can be a paste resin composition for circuit connection or an anisotropic conductive adhesive depending on the type of fine conductive particles used.
- Synthesis Example 1 Synthesis of polycondensate of 4-tertiarybutylcatechol and epichlorohydrin 2 liter separable equipped with thermometer, lower funnel, condenser, stirrer, baffle plate and with a separation cock at the bottom A flask was charged with 200 g of 4-t-butylcatechol, 892 g of epichlorohydrin, and 268 g of isopropyl alcohol, stirred, dissolved, and heated to 40 ° C. Thereafter, 554 g of a 20% aqueous sodium hydroxide solution was appropriately reduced over 3 hours from a suitable funnel. Stirring was continued for 30 minutes after completion of the proper condition to complete the reaction.
- FIG. 1 shows a chart obtained by GPC measurement of this epoxy resin (A′-1). The area ratio of the maximum peak in GPC measurement was 80%.
- the GPC measurement was performed by the following method. ⁇ GPC measurement conditions> Measuring device: “HLC-8320 GPC” manufactured by Tosoh Corporation Column: Guard column “HXL-L” manufactured by Tosoh Corporation + “TSK-GEL G2000HXL” manufactured by Tosoh Corporation + “TSK-GEL G2000HXL” manufactured by Tosoh Corporation + Tosoh Corporation “TSK-GEL G3000HXL” + “TSK-GEL G4000HXL” manufactured by Tosoh Corporation Detector: RI (differential refractometer) Data processing: “GPC workstation EcoSEC-WorkStation” manufactured by Tosoh Corporation Measurement conditions: Column temperature 40 ° C Developing solvent Tetrahydrofuran Flow rate 1.0 ml / min Standard: The following monodisperse polystyrene having a known molecular weight was used in accordance with the measurement manual of “GPC workstation EcoSEC-WorkStation”.
- Example 1 Supply the epoxy resin (A′-1) obtained in Synthesis Example 1 at a vacuum of 2 to 20 Pa using a falling film molecular distillation apparatus (manufactured by Shibata Kagaku Co., Ltd.) having a heat transfer area of about 0.03 m 2. Treatment was performed at a liquid speed of 100 ml / h and an evaporation surface temperature of 220 to 250 ° C., and an epoxy resin (A-1) was obtained as a distillate with a yield of 71%. A GPC measurement chart of the epoxy resin (A-1) is shown in FIG. The area ratio of the maximum peak in GPC measurement was 95%.
- Example 2 Supply the epoxy resin (A′-1) obtained in Synthesis Example 1 at a vacuum of 2 to 20 Pa using a falling film molecular distillation apparatus (manufactured by Shibata Kagaku Co., Ltd.) having a heat transfer area of about 0.03 m 2. Treatment was performed at a liquid speed of 100 ml / h and an evaporation surface temperature of 180 to 210 ° C., and an epoxy resin (A-2) was obtained as a distillate with a yield of 57%. The area ratio of the maximum peak in the GPC measurement of the epoxy resin (A-2) was 96%.
- Example 3 The epoxy resin (A′-1) obtained in Synthesis Example 1 was supplied using a falling film type molecular distillation apparatus (manufactured by Shibata Kagaku Co., Ltd.) having a heat transfer area of about 0.03 m 2 at a vacuum of 2 to 20 Pa.
- the epoxy resin (A-3) was obtained at a rate of 100 ml / h and an evaporation surface temperature of 140 to 170 ° C., and a distillation fraction with a yield of 48%.
- the area ratio of the maximum peak in the GPC measurement of the epoxy resin (A-3) was 97%.
- the epoxy resin (A'-2) used for comparison is bisphenol A type liquid epoxy resin EPICLON 850-S (manufactured by DIC Corporation), and the epoxy resin (A'-3) is bisphenol F type liquid epoxy resin EPICLON 830. -S (made by DIC Corporation).
- Table 1 shows the physical properties of the epoxy resins obtained in Examples 1 to 3 and the epoxy resins used in the comparative examples.
- ⁇ Method for producing cured product An epoxy resin, a curing agent (Me-THPA: methyltetrahydrophthalic anhydride), and a curing accelerator were mixed and deaerated at 25 ° C. between a glass plate with a thickness of 2 mm coated with a release agent. The resin composition was cast, heated at 80 ° C. for 1 hour, and then heated at 110 ° C. for 4 hours to produce a cured product.
- Me-THPA methyltetrahydrophthalic anhydride
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Abstract
Description
以下、本発明を詳細に説明する。
本発明のエポキシ樹脂は、芳香環上の置換基として炭素数1~8のアルキル基を有していてもよいジヒドロキシベンゼンのエポキシ化物を主成分とするエポキシ樹脂(A)であって、GPC測定における最大ピークの面積比率が90%以上であることを特徴とする。
で表されるものを挙げることができる。
<GPC測定条件>
測定装置 :東ソー株式会社製「HLC-8320 GPC」、
カラム:東ソー株式会社製ガードカラム「HXL-L」
+東ソー株式会社製「TSK-GEL G2000HXL」
+東ソー株式会社製「TSK-GEL G2000HXL」
+東ソー株式会社製「TSK-GEL G3000HXL」
+東ソー株式会社製「TSK-GEL G4000HXL」
検出器: RI(示差屈折計)
データ処理:東ソー株式会社製「GPCワークステーション EcoSEC-WorkStation」
測定条件: カラム温度 40℃
展開溶媒 テトラヒドロフラン
流速 1.0ml/分
標準 : 前記「GPCワークステーション EcoSEC―WorkStation」の測定マニュアルに準拠して、分子量が既知の下記の単分散ポリスチレンを用いた。
(使用ポリスチレン)
東ソー株式会社製「A-500」
東ソー株式会社製「A-1000」
東ソー株式会社製「A-2500」
東ソー株式会社製「A-5000」
東ソー株式会社製「F-1」
東ソー株式会社製「F-2」
東ソー株式会社製「F-4」
東ソー株式会社製「F-10」
東ソー株式会社製「F-20」
東ソー株式会社製「F-40」
東ソー株式会社製「F-80」
東ソー株式会社製「F-128」
試料 : 樹脂固形分換算で1.0質量%のテトラヒドロフラン溶液をマイクロフィルターでろ過したもの(50μl)。
エポキシ当量:JIS K7236
粘度:JIS K7233 単一円筒回転粘度計法
全塩素含有量:JIS K7243-3
前記のように、本発明のエポキシ樹脂(A)を得る方法としては、芳香環上の置換基として炭素数1~8のアルキル基を有していてもよいジヒドロキシベンゼンのエポキシ化物から、GPC測定における最大ピークに含まれる特定の化合物を分取する等の精製工程を必要とする。
本発明のエポキシ樹脂(A)は、硬化剤を併用できるものである。前記エポキシ樹脂(A)に硬化剤を配合することで、硬化性のエポキシ樹脂組成物を作製することができる。
本発明のエポキシ樹脂組成物は、半導体封止材料、半導体装置、プリプレグ、プリント回路基板、ビルドアップ基板、ビルドアップフィルム、繊維強化複合材料、繊維強化樹脂成型品、導電ペースト等に適用することができる。
本発明のエポキシ樹脂組成物から半導体封止材料を得る方法としては、前記エポキシ樹脂組成物、前記硬化促進剤、及び無機充填剤等の配合剤とを必要に応じて押出機、ニ-ダ、ロ-ル等を用いて均一になるまで充分に溶融混合する方法が挙げられる。その際、無機充填剤としては、通常、溶融シリカが用いられるが、パワートランジスタ、パワーIC用高熱伝導半導体封止材として用いる場合は、溶融シリカよりも熱伝導率の高い結晶シリカ,アルミナ,窒化ケイ素などの高充填化、または溶融シリカ、結晶性シリカ、アルミナ、窒化ケイ素などを用いるとよい。その充填率はエポキシ樹脂組成物100質量部当たり、無機充填剤を30質量%~95質量%の範囲で用いることが好ましく、中でも、難燃性や耐湿性や耐半田クラック性の向上、線膨張係数の低下を図るためには、70質量部以上がより好ましく、80質量部以上であることがさらに好ましい。
本発明のエポキシ樹脂組成物から半導体装置を得る方法としては、前記半導体封止材料を注型、或いはトランスファー成型機、射出成型機などを用いて成型し、さらに50~200℃で2~10時間の間、加熱する方法が挙げられる。
本発明のエポキシ樹脂組成物からプリプレグを得る方法としては、有機溶剤を配合してワニス化した硬化性樹脂組成物を、補強基材(紙、ガラス布、ガラス不織布、アラミド紙、アラミド布、ガラスマット、ガラスロービング布など)に含浸したのち、用いた溶剤種に応じた加熱温度、好ましくは50~170℃で加熱することによって、得る方法が挙げられる。この時用いる樹脂組成物と補強基材の質量割合としては、特に限定されないが、通常、プリプレグ中の樹脂分が20質量%~60質量%となるように調製することが好ましい。
本発明のエポキシ樹脂組成物からプリント回路基板を得る方法としては、前記プリプレグを、常法により積層し、適宜銅箔を重ねて、1~10MPaの加圧下に170~300℃で10分~3時間、加熱圧着させる方法が挙げられる。
本発明のエポキシ樹脂組成物からビルドアップ基板を得る方法としては、工程1~3を経由する方法が挙げられる。工程1では、まず、ゴム、フィラーなどを適宜配合した前記硬化性樹脂組成物を、回路を形成した回路基板にスプレーコーティング法、カーテンコーティング法等を用いて塗布した後、硬化させる。工程2では、必要に応じて、エポキシ樹脂組成物が塗布された回路基板に所定のスルーホール部等の穴あけを行った後、粗化剤により処理し、その表面を湯洗することによって、前記基板に凹凸を形成させ、銅などの金属をめっき処理する。工程3では、工程1~2の操作を所望に応じて順次繰り返し、樹脂絶縁層及び所定の回路パターンの導体層を交互にビルドアップしてビルドアップ基板を成型する。なお、前記工程において、スルーホール部の穴あけは、最外層の樹脂絶縁層の形成後に行うとよい。また、本発明のビルドアップ基板は、銅箔上で当該樹脂組成物を半硬化させた樹脂付き銅箔を、回路を形成した配線基板上に、170~300℃で加熱圧着することで、粗化面を形成、メッキ処理の工程を省き、ビルドアップ基板を作製することも可能である。
本発明のエポキシ樹脂組成物からビルドアップフィルムを得る方法としては、例えば、支持フィルム上に硬化性樹脂組成物を塗布したのち、乾燥させて、支持フィルムの上に樹脂組成物層を形成する方法が挙げられる。本発明のエポキシ樹脂組成物をビルドアップフィルムに用いる場合、該フィルムは、真空ラミネート法におけるラミネートの温度条件(通常70℃~140℃)で軟化し、回路基板のラミネートと同時に、回路基板に存在するビアホール或いはスルーホール内の樹脂充填が可能な流動性(樹脂流れ)を示すことが肝要であり、このような特性を発現するよう前記各成分を配合することが好ましい。
本発明のエポキシ樹脂組成物から繊維強化複合材料(樹脂が強化繊維に含浸したシート状の中間材料)を得る方法としては、エポキシ樹脂組成物を構成する各成分を均一に混合してワニスを調整し、次いでこれを強化繊維からなる強化基材に含浸した後、重合反応させることにより製造する方法が挙げられる。
本発明のエポキシ樹脂組成物から繊維強化成型品(樹脂が強化繊維に含浸したシート状部材が硬化した成型品)を得る方法としては、型に繊維骨材を敷き、前記ワニスを多重積層してゆくハンドレイアップ法やスプレーアップ法、オス型・メス型のいずれかを使用し、強化繊維からなる基材にワニスを含浸させながら積み重ねて成型、圧力を成型物に作用させることのできるフレキシブルな型をかぶせ、気密シールしたものを真空(減圧)成型する真空バッグ法、あらかじめ強化繊維を含有するワニスをシート状にしたものを金型で圧縮成型するSMCプレス法、繊維を敷き詰めた合わせ型に前記ワニスを注入するRTM法などにより、強化繊維に前記ワニスを含浸させたプリプレグを製造し、これを大型のオートクレーブで焼き固める方法などが挙げられる。なお、前記で得られた繊維強化樹脂成型品は、強化繊維とエポキシ樹脂組成物の硬化物とを有する成型品であり、具体的には、繊維強化成型品中の強化繊維の量は、40質量%~70質量%の範囲であることが好ましく、強度の点から50質量%~70質量%の範囲であることが特に好ましい。
本発明のエポキシ樹脂組成物から導電ペーストを得る方法としては、例えば、微細導電性粒子を該硬化性樹脂組成物中に分散させる方法が挙げられる。前記導電ペーストは、用いる微細導電性粒子の種類によって、回路接続用ペースト樹脂組成物や異方性導電接着剤とすることができる。
温度計、適下ロート、冷却管、撹拌機、邪魔板を備えた、下部に分液コック付きの2リットルのセパラブルフラスコに、4-t-ブチルカテコール200g、エピクロルヒドリン892g、イソプロピルアルコール268gを仕込み、撹拌、溶解させ、40℃に加熱した。その後適下ロートより、20%水酸化ナトリウム水溶液の554gを3時間かけて適下した。適下終了後30分間撹拌を続け、反応を完結させた。その後撹拌を停止し静置し、下層の食塩水を分液し除いた。次に、過剰のエピクロルヒドリン、イソプロピルアルコール、水を蒸留回収した。得られた粗樹脂をトルエン503gで溶解させ、5%水酸化ナトリウム水溶液を50g加え、80℃、3時間撹拌した。その後水洗により生成した塩、及びアルカリを油水分離させて、除去し、脱水、濾過を経てトルエンを蒸留回収させてエポキシ樹脂(A’-1)を得た。このエポキシ樹脂(A’-1)のGPC測定で得られたチャートを図1に示す。GPC測定における最大ピークの面積比率は80%であった。
<GPC測定条件>
測定装置 :東ソー株式会社製「HLC-8320 GPC」、
カラム:東ソー株式会社製ガードカラム「HXL-L」
+東ソー株式会社製「TSK-GEL G2000HXL」
+東ソー株式会社製「TSK-GEL G2000HXL」
+東ソー株式会社製「TSK-GEL G3000HXL」
+東ソー株式会社製「TSK-GEL G4000HXL」
検出器: RI(示差屈折計)
データ処理:東ソー株式会社製「GPCワークステーション EcoSEC-WorkStation」
測定条件: カラム温度 40℃
展開溶媒 テトラヒドロフラン
流速 1.0ml/分
標準 : 前記「GPCワークステーション EcoSEC―WorkStation」の測定マニュアルに準拠して、分子量が既知の下記の単分散ポリスチレンを用いた。
(使用ポリスチレン)
東ソー株式会社製「A-500」
東ソー株式会社製「A-1000」
東ソー株式会社製「A-2500」
東ソー株式会社製「A-5000」
東ソー株式会社製「F-1」
東ソー株式会社製「F-2」
東ソー株式会社製「F-4」
東ソー株式会社製「F-10」
東ソー株式会社製「F-20」
東ソー株式会社製「F-40」
東ソー株式会社製「F-80」
東ソー株式会社製「F-128」
試料 : 樹脂固形分換算で1.0質量%のテトラヒドロフラン溶液をマイクロフィルターでろ過したもの(50μl)。
合成例1で得られたエポキシ樹脂(A’-1)を、伝熱面積 約0.03m2の流下薄膜式分子蒸留装置(柴田科学社製)を用い、2~20Paの真空度で、供給液速度100ml/h、蒸発面の温度220~250℃にて処理し、蒸留分として、収率71%で、エポキシ樹脂(A-1)を得た。エポキシ樹脂(A-1)のGPC測定のチャートを図2に示す。GPC測定における最大ピークの面積比率は95%であった。
合成例1で得られたエポキシ樹脂(A’-1)を、伝熱面積 約0.03m2の流下薄膜式分子蒸留装置(柴田科学社製)を用い、2~20Paの真空度で、供給液速度100ml/h、蒸発面の温度180~210℃にて処理し、蒸留分として、収率57%で、エポキシ樹脂(A-2)を得た。エポキシ樹脂(A-2)のGPC測定における最大ピークの面積比率は96%であった。
合成例1で得られたエポキシ樹脂(A’-1)を、伝熱面積 約0.03m2の流下薄膜式分子蒸留装置(柴田科学社製)を用い、2~20Paの真空度で、供給液速度100ml/h、蒸発面の温度140~170℃にて処理し、蒸留分として、収率48%で、エポキシ樹脂(A-3)を得た。エポキシ樹脂(A-3)のGPC測定における最大ピークの面積比率は97%であった。
離型剤を塗布した厚さ2mmのガラス板とガラス板との間に、25℃でエポキシ樹脂と硬化剤(Me-THPA:メチルテトラヒドロフタル酸無水物)と硬化促進剤を混合・脱気した樹脂組成物を注型し、80℃1時間加熱後、110℃4時間加熱し、硬化物を作製した。
150℃に加熱したホットプレート上で、25℃で混合・脱気した樹脂組成物を1ml加熱し、ゲルタイムを測定した。
硬化物を幅25mm、長さ75mmのサイズに切り出し、これを試験片として、HAST装置((株)平山製作所製)を用いて121℃/100%RHの雰囲気下4時間放置し、処理前後の重量変化を測定した。
硬化物を幅10mm、長さ80mmのサイズに切り出し、これを試験片として、万能試験機((株)島津製作所製 AGI)を用いて室温での曲げ強度・曲げ弾性率を求めた。なお、n=3で測定し、平均値を用いた。また、試験片の膜厚及び幅は、5点測定し、平均値を計算値に用いた。
Claims (17)
- 芳香環上の置換基として炭素数1~8のアルキル基を有していてもよいジヒドロキシベンゼンのエポキシ化物を主成分とするエポキシ樹脂(A)であって、GPC測定における最大ピークの面積比率が90%以上であることを特徴とするエポキシ樹脂。
- 前記エポキシ樹脂(A)中の全塩素含有量が2000ppm以下である請求項1又は2記載のエポキシ樹脂。
- 前記構造式(1)中のR1がブチル基であり、mが1である請求項2又は3記載のエポキシ樹脂。
- エポキシ当量が190~205g/eqの範囲である請求項4記載のエポキシ樹脂。
- 前記エポキシ樹脂(A)の25℃における粘度が400~1000mPa・sの範囲である請求項4又は5記載のエポキシ樹脂。
- 前記ジヒドロキシベンゼンがt-ブチルカテコールである請求項1~6の何れか1項記載のエポキシ樹脂。
- 請求項1~7の何れか1項記載のエポキシ樹脂と、硬化剤とを必須成分とするエポキシ樹脂組成物。
- 請求項8記載のエポキシ樹脂組成物の硬化物。
- 請求項8記載のエポキシ樹脂組成物と無機充填材とを含有する半導体封止材料。
- 請求項10に記載の半導体封止材料の硬化物である半導体装置。
- 請求項8記載のエポキシ樹脂組成物と補強基材とを有する含浸基材の半硬化物であるプリプレグ。
- 請求項8記載のエポキシ樹脂組成物の板状賦形物と銅箔とからなる回路基板。
- 請求項8記載のエポキシ樹脂組成物の硬化物と基材フィルムとからなるビルドアップフィルム。
- 請求項8記載のエポキシ樹脂組成物と強化繊維とを含有する繊維強化複合材料。
- 請求項15記載の繊維強化複合材料の硬化物である繊維強化成形品。
- 芳香環上の置換基として炭素数1~8のアルキル基を有していてもよいジヒドロキシベンゼンとエピハロヒドリンとを反応させたのち、蒸留精製する工程を有することを特徴とするエポキシ樹脂の製造方法。
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| US16/495,482 US20200087444A1 (en) | 2017-03-29 | 2018-03-13 | Epoxy resin, production method, and epoxy resin composition and cured product thereof |
| CN201880022507.3A CN110475767A (zh) | 2017-03-29 | 2018-03-13 | 环氧树脂、制造方法、环氧树脂组合物和其固化物 |
| KR1020197024954A KR102398337B1 (ko) | 2017-03-29 | 2018-03-13 | 에폭시 수지, 제조 방법, 에폭시 수지 조성물 및 그 경화물 |
| JP2019509200A JP6660576B2 (ja) | 2017-03-29 | 2018-03-13 | エポキシ樹脂、製造方法、エポキシ樹脂組成物及びその硬化物 |
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| KR (1) | KR102398337B1 (ja) |
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| CN110128791A (zh) * | 2019-05-30 | 2019-08-16 | 江苏华海诚科新材料股份有限公司 | 一种环氧树脂组合物及其制备方法 |
| CN110564110A (zh) * | 2019-10-22 | 2019-12-13 | 惠柏新材料科技(上海)股份有限公司 | 一种环氧树脂组合物及其制备方法和应用 |
| JP7311077B1 (ja) * | 2022-02-03 | 2023-07-19 | Dic株式会社 | 酸化物微粒子及び酸化物微粒子の製造方法 |
| WO2023149315A1 (ja) * | 2022-02-03 | 2023-08-10 | Dic株式会社 | 酸化物微粒子及び酸化物微粒子の製造方法 |
| JP2023180969A (ja) * | 2022-06-10 | 2023-12-21 | 株式会社レゾナック | 封止用樹脂組成物、電子部品装置及び電子部品装置の製造方法 |
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| US10961208B1 (en) * | 2019-12-24 | 2021-03-30 | Chang Chun Plastics Co., Ltd. | Product of glycidyl ether of a mono or polyhydric phenol |
| CN114685944B (zh) * | 2020-12-28 | 2024-01-30 | 陕西生益科技有限公司 | 一种热固性树脂组合物、包含其的预浸料、层压板及印制电路板 |
| CN115677980A (zh) * | 2021-07-28 | 2023-02-03 | 华为技术有限公司 | 一种环氧树脂及其制备方法、树脂组合物 |
| US20230326820A1 (en) * | 2022-04-07 | 2023-10-12 | Infineon Technologies Ag | Anti-Corrosion Particles in Semiconductor Device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2019102853A1 (ja) * | 2017-11-22 | 2019-05-31 | Dic株式会社 | エポキシ樹脂組成物、硬化性樹脂組成物及び繊維強化複合材料 |
| JP2020056041A (ja) * | 2017-11-22 | 2020-04-09 | Dic株式会社 | エポキシ樹脂組成物、硬化性樹脂組成物及び繊維強化複合材料 |
| CN110128791A (zh) * | 2019-05-30 | 2019-08-16 | 江苏华海诚科新材料股份有限公司 | 一种环氧树脂组合物及其制备方法 |
| CN110128791B (zh) * | 2019-05-30 | 2022-02-15 | 江苏华海诚科新材料股份有限公司 | 一种环氧树脂组合物及其制备方法 |
| CN110564110A (zh) * | 2019-10-22 | 2019-12-13 | 惠柏新材料科技(上海)股份有限公司 | 一种环氧树脂组合物及其制备方法和应用 |
| JP7311077B1 (ja) * | 2022-02-03 | 2023-07-19 | Dic株式会社 | 酸化物微粒子及び酸化物微粒子の製造方法 |
| WO2023149315A1 (ja) * | 2022-02-03 | 2023-08-10 | Dic株式会社 | 酸化物微粒子及び酸化物微粒子の製造方法 |
| JP2023180969A (ja) * | 2022-06-10 | 2023-12-21 | 株式会社レゾナック | 封止用樹脂組成物、電子部品装置及び電子部品装置の製造方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR102398337B1 (ko) | 2022-05-17 |
| JPWO2018180451A1 (ja) | 2019-11-21 |
| TW201840624A (zh) | 2018-11-16 |
| CN110475767A (zh) | 2019-11-19 |
| KR20190127694A (ko) | 2019-11-13 |
| US20200087444A1 (en) | 2020-03-19 |
| TWI751310B (zh) | 2022-01-01 |
| JP6660576B2 (ja) | 2020-03-11 |
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