WO2021065974A1 - 樹脂組成物および樹脂シート - Google Patents
樹脂組成物および樹脂シート Download PDFInfo
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- WO2021065974A1 WO2021065974A1 PCT/JP2020/037061 JP2020037061W WO2021065974A1 WO 2021065974 A1 WO2021065974 A1 WO 2021065974A1 JP 2020037061 W JP2020037061 W JP 2020037061W WO 2021065974 A1 WO2021065974 A1 WO 2021065974A1
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- JXUKBNICSRJFAP-UHFFFAOYSA-N triethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCOCC1CO1 JXUKBNICSRJFAP-UHFFFAOYSA-N 0.000 description 1
- ZNOCGWVLWPVKAO-UHFFFAOYSA-N trimethoxy(phenyl)silane Chemical compound CO[Si](OC)(OC)C1=CC=CC=C1 ZNOCGWVLWPVKAO-UHFFFAOYSA-N 0.000 description 1
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 1
- QLAGHGSFXJZWKY-UHFFFAOYSA-N triphenylborane;triphenylphosphane Chemical compound C1=CC=CC=C1B(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 QLAGHGSFXJZWKY-UHFFFAOYSA-N 0.000 description 1
- BWHDROKFUHTORW-UHFFFAOYSA-O tritert-butylphosphanium Chemical compound CC(C)(C)[PH+](C(C)(C)C)C(C)(C)C BWHDROKFUHTORW-UHFFFAOYSA-O 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 229940099259 vaseline Drugs 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/28—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
- H01L23/29—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the material, e.g. carbon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/28—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
- H01L23/29—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the material, e.g. carbon
- H01L23/293—Organic, e.g. plastic
- H01L23/295—Organic, e.g. plastic containing a filler
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/28—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
- H01L23/31—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/048—Encapsulation of modules
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/048—Encapsulation of modules
- H01L31/0481—Encapsulation of modules characterised by the composition of the encapsulation material
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B33/00—Electroluminescent light sources
- H05B33/02—Details
- H05B33/04—Sealing arrangements, e.g. against humidity
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/204—Applications use in electrical or conductive gadgets use in solar cells
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/206—Applications use in electrical or conductive gadgets use in coating or encapsulating of electronic parts
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/844—Encapsulations
Definitions
- the present invention relates to a resin composition useful for encapsulating an electronic device and a resin sheet using the same.
- the electronic devices In order to protect electronic devices such as organic EL (Electroluminescence) devices and solar cells from moisture, the electronic devices are sealed with a resin composition.
- organic EL Electrode
- solar cells In order to protect electronic devices such as organic EL (Electroluminescence) devices and solar cells from moisture, the electronic devices are sealed with a resin composition.
- Patent Document 1 describes a sealing resin composition containing a hygroscopic metal hydroxide and a support, and a sealing resin composition layer formed of the sealing resin composition. The sheet is disclosed.
- a resin composition containing a polyolefin resin and semi-baked hydrotalcite has excellent moisture permeation resistance and transparency, and is useful for encapsulating electronic devices.
- the content of semi-baked hydrotalcite in the resin composition is increased in order to improve the moisture permeation resistance, the content of semi-baked hydrotalcite, which is a hygroscopic filler, is increased, but the time is increased. It has been found that the deterioration of the part to be sealed increases with the passage of time, and there is a limit to the improvement of the sealing performance.
- the present invention has been made in view of such circumstances, and an object of the present invention is to provide a resin composition having excellent sealing performance and a resin sheet using the same.
- the water supplemented by the semi-baked hydrotalcite reaches the site to be sealed with the passage of time and causes its deterioration, and the content of the semi-baked hydrotalcite increases. Then, it was found that this deterioration became apparent. Further, in order to improve the sealing performance, the content of the semi-baked hydrotalcite is increased to improve the moisture permeation resistance, and the amount of internal water content in the resin composition brought in by the semi-baked hydrotalcite is reduced. As a result, it was found that the sealing performance (moisture resistance and suppression of deterioration of the sealing target portion due to internal moisture) can be improved.
- a resin containing a polyolefin resin and semi-baked hydrotalcite the content of the semi-baked hydrotalcite is more than 45% by mass with respect to 100% by mass of the non-volatile content of the resin composition, and the water content is resin.
- the resin composition of the present invention contains a polyolefin resin and semi-baked hydrotalcite.
- the semi-firing hydrotalcite absorbs the moisture in the outside air, so that the deterioration of the electronic device due to the moisture invading from the outside air can be suppressed. ..
- the sealing layer formed from the resin composition containing the semi-fired hydrotalcite the water captured by the semi-fired hydrotalcite (the interlayer water of the semi-fired hydrotalcite and the water adhering to the surface of the semi-fired hydrotalcite).
- the moisture reaches the electronic device over time, causing deterioration of the electronic device.
- the water content of the resin composition containing semi-firing hydrotalcite is sufficiently reduced to allow the semi-firing hydrotalcite to be used.
- Deterioration of the electronic device can be sufficiently suppressed by the moisture in the brought-in resin composition, and a resin composition having excellent sealing performance can be provided.
- the water content of the resin composition is 2,500 ppm or less based on the mass of the entire resin composition (the entire resin composition containing volatile and non-volatile components). Let's do it.
- the lower the water content the more preferable (ideally 0 ppm), preferably 2,000 ppm or less, more preferably 1,500 ppm or less, still more preferably 1,000 ppm or less, and particularly preferably 800 ppm or less.
- This water content can be measured as described in the Examples column described later.
- the water content of 2,500 ppm or less can be achieved by a method such as appropriately setting the drying conditions of the resin composition.
- the heating temperature at the time of forming the resin composition layer (that is, the coating formed by the varnish coating).
- the heating temperature of the film) is preferably 70 to 150 ° C.
- the heating time is preferably 10 minutes to 2 hours to form the resin composition layer
- the drying temperature is preferably 100 to 180 ° C.
- the water content of the resin composition layer can be reduced to 2,500 ppm or less by additionally drying the formed resin composition layer with the drying time preferably 10 minutes to 7 weeks.
- the heating temperature for the formation of the resin composition layer and the subsequent additional drying is low, it may take a long time for the moisture content of the resin composition to be 2,500 ppm or less, or it may be 2,500 ppm or less. It can be difficult. Therefore, the heating temperature for forming the resin composition layer and the subsequent additional drying is preferably a high temperature to some extent. However, in the formation of the resin composition layer, if the heating temperature is raised too high, problems such as bubbles entering the resin composition layer may occur. Therefore, it is preferable that the formation temperature of the resin composition layer is set relatively low, and the temperature of the subsequent additional drying of the resin composition layer is set higher than the formation temperature of the resin composition layer.
- the polyolefin-based resin that can be used in the present invention is not particularly limited as long as it has an olefin-derived skeleton.
- the polyolefin-based resin described in Patent Document 1 can be mentioned as a known one.
- the olefin is preferably a monoolefin having one olefinic carbon-carbon double bond and / or a diolefin having two olefinic carbon-carbon double bonds.
- the monoolefin examples include ⁇ -olefins such as ethylene, propylene, 1-butene, isobutylene (isobutylene), 1-pentene, 1-hexene, 1-heptene, and 1-octene
- examples of the diolefin include ⁇ -olefins.
- 1,3-butadiene, isoprene, 1,3-pentadiene, 2,3-dimethylbutadiene and the like can be mentioned.
- the skeleton derived from olefin in the polyolefin resin may be one kind or two or more kinds. Only one type of polyolefin resin may be used, or two or more types may be used in combination.
- the polyolefin-based resin may be a homopolymer, or a copolymer such as a random copolymer or a block copolymer.
- the copolymer include a copolymer of two or more kinds of olefins and a copolymer of an olefin and a monomer other than the olefin such as a non-conjugated diene or styrene.
- Examples of preferred copolymers are ethylene-non-conjugated diene copolymer, ethylene-propylene copolymer, ethylene-propylene-non-conjugated diene copolymer, ethylene-butene copolymer, propylene-butene copolymer, propylene.
- -Butene-non-conjugated diene copolymer, styrene-isobutylene copolymer, styrene-isobutylene-styrene copolymer and the like can be mentioned.
- polystyrene-isobutylene-modified resin examples include the isobutylene-modified resin described in International Publication No. 2011/62167 and the styrene-isobutylene-modified resin described in International Publication No. 2013/108731.
- the polyolefin-based resin is preferably a polybutene-based resin or a polypropylene-based resin.
- the "polybutene-based resin” refers to a resin in which the main unit (unit of the maximum content) of all olefin monomer units constituting the polymer is derived from butene
- the "polypropylene-based resin” refers to a polymer.
- a resin whose main unit (unit of maximum content) is derived from propylene among all the constituent olefin monomer units.
- examples of the monomer other than butene include styrene, ethylene, propylene, and isoprene.
- examples of the monomer other than propylene include ethylene, butene, and isoprene.
- the polyolefin-based resin is a polyolefin-based resin having an acid anhydride group (that is, a carbonyloxycarbonyl group (-CO-O-CO-)) and / / from the viewpoint of imparting excellent physical properties such as adhesiveness and adhesion wet heat resistance.
- it preferably contains a polyolefin-based resin having an epoxy group.
- the acid anhydride group include a group derived from succinic anhydride, a group derived from maleic anhydride, a group derived from glutaric anhydride and the like.
- the polyolefin-based resin can have one or more acid anhydride groups.
- the polyolefin-based resin having an acid anhydride group is, for example, an unsaturated compound having an acid anhydride group, and is obtained by graft-modifying the polyolefin resin under radical reaction conditions. Further, an unsaturated compound having an acid anhydride group may be radically copolymerized together with an olefin or the like.
- the polyolefin-based resin having an epoxy group is an unsaturated compound having an epoxy group such as glycidyl (meth) acrylate, 4-hydroxybutyl acrylate glycidyl ether, and allyl glycidyl ether, and the polyolefin-based resin is subjected to radical reaction conditions. It is obtained by graft modification with.
- an unsaturated compound having an epoxy group may be radically copolymerized together with an olefin or the like.
- One type or two or more types of polyolefin-based resin can be used, and a polyolefin-based resin having an acid anhydride group and a polyolefin-based resin having an epoxy group may be used in combination.
- polystyrene resin having an acid anhydride group a polybutene resin having an acid anhydride group and a polypropylene resin having an acid anhydride group are preferable.
- polyolefin-based resin having an epoxy group a polybutene-based resin having an epoxy group and a polypropylene-based resin having an epoxy group are preferable.
- the concentration of the acid anhydride group in the polyolefin resin having an acid anhydride group is preferably 0.05 to 10 mmol / g, more preferably 0.1 to 5 mmol / g.
- the concentration of the acid anhydride group is obtained from the value of the acid value defined as the number of mg of potassium hydroxide required to neutralize the acid present in 1 g of the resin according to the description of JIS K2501.
- the amount of the polyolefin-based resin having an acid anhydride group in the polyolefin-based resin is preferably 0 to 70% by mass, more preferably 10 to 50% by mass.
- the concentration of the epoxy group in the polyolefin resin having an epoxy group is preferably 0.05 to 10 mmol / g, more preferably 0.1 to 5 mmol / g.
- the epoxy group concentration is determined from the epoxy equivalent obtained based on JIS K 7236-1995.
- the amount of the polyolefin-based resin having an epoxy group in the polyolefin-based resin is preferably 0 to 70% by mass, more preferably 10 to 50% by mass.
- the polyolefin-based resin preferably contains both a polyolefin-based resin having an acid anhydride group and a polyolefin-based resin having an epoxy group, from the viewpoint of imparting excellent physical properties such as sealing performance.
- a polyolefin resin an acid anhydride group and an epoxy group are reacted by heating to form a crosslinked structure, and a sealing layer having excellent sealing performance or the like can be formed.
- the crosslinked structure can be formed after sealing, but when the object to be sealed is heat-sensitive, such as an electronic device, it is sealed using a sealing film and crosslinked when the sealing film is manufactured. It is desirable to form a structure.
- the ratio of the polyolefin resin having an acid anhydride group to the polyolefin resin having an epoxy group is not particularly limited as long as an appropriate crosslinked structure can be formed, but the molar ratio of the epoxy group to the acid anhydride group (epoxide group: acid anhydride).
- the group) is preferably 100:10 to 100: 400, more preferably 100: 25 to 100: 350, and particularly preferably 100: 40 to 100: 300.
- a polyolefin-based resin having an epoxy group When a polyolefin-based resin having an epoxy group is used in the resin composition of the present invention, a polyolefin-based resin having a functional group capable of reacting with the epoxy group (excluding the acid anhydride group) may be used.
- the functional group include a hydroxyl group, a phenolic hydroxyl group, an amino group, a carboxy group and the like.
- a polyolefin resin having an acid anhydride group When a polyolefin resin having an acid anhydride group is used in the resin composition of the present invention, a polyolefin resin having a functional group (excluding an epoxy group) capable of reacting with the acid anhydride group may be used.
- the functional group include a hydroxyl group, a primary or secondary amino group, a thiol group, and an oxetane group.
- the number average molecular weight of the polyolefin resin is not particularly limited, but is 1,000, from the viewpoint of providing good coatability of the varnish of the resin composition and good compatibility with other components in the resin composition.
- 000 or less is preferable, 750,000 or less is more preferable, 500,000 or less is further preferable, 400,000 or less is further preferable, 300,000 or less is further preferable, 200,000 or less is particularly preferable, and 150,000 or less is particularly preferable.
- this number average molecular weight is 1,000. The above is preferable, and 2,000 or more is more preferable.
- the number average molecular weight in the present invention is measured by gel permeation chromatography (GPC) method (polystyrene conversion). Specifically, the number average molecular weight by the GPC method is measured by moving LC-9A / RID-6A manufactured by Shimadzu Corporation as a measuring device and Shodex K-800P / K-804L / K-804L manufactured by Showa Denko Co., Ltd. as a column. It can be measured using toluene or the like as a phase at a column temperature of 40 ° C. and calculated using a standard polystyrene calibration curve.
- GPC gel permeation chromatography
- the polyolefin-based resin in the present invention is preferably amorphous from the viewpoint of suppressing a decrease in fluidity due to thickening of the varnish.
- amorphous means that the polyolefin resin does not have a clear melting point, and for example, when the melting point is measured by DSC (differential scanning calorimetry) of the polyolefin resin, no clear peak is observed. You can use the one.
- polystyrene resin As a specific example of the polypropylene-based resin, "T-YP341” manufactured by Seikou PMC (glycidyl methacrylate-modified propylene-butene random copolymer, amount of butene units per 100% by mass of propylene units and butene units in total: 29% by mass, Epoxy group concentration: 0.638 mmol / g, number average molecular weight: 155,000), "T-YP279” manufactured by Seikou PMC (maleic anhydride-modified propylene-butene random copolymer, total 100 mass of propylene unit and butene unit) Amount of butene unit per%: 36% by mass, acid anhydride group concentration: 0.464 mmol / g, number average molecular weight: 35,000), "T-YP276” manufactured by Seikou PMC (glycidyl methacrylate-modified propylene-butylene random copolymer, amount of
- polybutene resin examples include "HV-1900” (polybutene, number average molecular weight: 2,900) manufactured by ENEOS (former company name “JXTG Energy”) and "HV-300M” (anhydrous malein) manufactured by Toho Chemical Industry Co., Ltd.
- Acid-modified liquid polybutene (modified product of "HV-300” (number average molecular weight: 1,400)), number average molecular weight: 2,100, number of carboxy groups constituting acid anhydride group: 3.2 / 1 Molecule, acid value: 43.4 mgKOH / g, acid anhydride group concentration: 0.77 mmol / g), BASF's "Opanol B100” (polyisobutylene, viscosity average molecular weight: 1,110,000), BASF's "Opanol B100” N50SF ”(polyisobutylene, viscosity average molecular weight: 400,000) can be mentioned.
- styrene-isobutylene copolymer examples include “SIBSTAR T102” manufactured by Kaneka (styrene-isobutylene-styrene block copolymer, number average molecular weight: 100,000, styrene content: 30% by mass), manufactured by Seikou PMC.
- TiBSTAR T102 styrene-isobutylene-styrene block copolymer, number average molecular weight: 100,000, styrene content: 30% by mass
- Seikou PMC Specific examples of the styrene-isobutylene copolymer.
- T-YP757B maleic anhydride-modified styrene-isobutylene-styrene block copolymer, acid anhydride group concentration: 0.464 mmol / g, number average molecular weight: 100,000
- T-YP766 manufactured by Seikou PMC.
- the content of the polyolefin resin in the resin composition of the present invention is not particularly limited. However, from the viewpoint of sealing performance and handleability of the resin composition, the content thereof is preferably 5% by mass or more, more preferably 10% by mass or more, and further, with respect to 100% by mass of the non-volatile content of the resin composition. It is preferably 15% by mass or more, preferably 50% by mass or less, more preferably 40% by mass or less, and further preferably 35% by mass or less.
- Hydrotalcite can be classified into uncalcined hydrotalcite, semi-calcined hydrotalcite, and calcined hydrotalcite. From the viewpoint of transparency and moisture permeation resistance of the resin composition, semi-baked hydrotalcite is used in the present invention.
- Unfired hydrotalcite is, for example, a metal hydroxide having a layered crystal structure typified by natural hydrotalcite (Mg 6 Al 2 (OH) 16 CO 3 ⁇ 4H 2 O), for example, It consists of a basic skeleton layer [Mg 1-X Al X (OH) 2 ] X + and an intermediate layer [(CO 3 ) X / 2 ⁇ mH 2 O] X ⁇ .
- the uncalcined hydrotalcite in the present invention is a concept including hydrotalcite-like compounds such as synthetic hydrotalcite. Examples of the hydrotalcite-like compound include those represented by the following formulas (I) and (II).
- M 2+ is Mg 2+, a divalent metal ion such as Zn 2+, M 3+ represents a trivalent metal ion such as Al 3+, Fe 3+, A n- is CO 3 2-, Cl -, NO 3 - represents a n-valent anion, such as a 0 ⁇ x ⁇ 1, a 0 ⁇ m ⁇ 1, n is a positive number).
- M 2+ is preferably Mg 2+
- M 3+ is preferably Al 3+
- a n- is preferably CO 3 2-.
- M 2+ is Mg 2+, a divalent metal ion such as Zn 2+, A n- is CO 3 2-, Cl -, NO 3 - represents a n-valent anion, such as, x is 2 or more Is a positive number, z is a positive number less than or equal to 2, m is a positive number, and n is a positive number.
- M 2+ is preferably Mg 2+
- Semi-calcined hydrotalcite refers to a metal hydroxide having a layered crystal structure in which the amount of interlayer water is reduced or eliminated, which is obtained by calcining uncalcined hydrotalcite.
- interlayer water refers to "H 2 O" described in the above-mentioned composition formulas of uncalcined natural hydrotalcite and hydrotalcite-like compounds, if it is described using a composition formula.
- calcined hydrotalcite refers to a metal oxide having an amorphous structure obtained by calcining uncalcined hydrotalcite or semi-calcined hydrotalcite, in which not only interlayer water but also hydroxyl groups are eliminated by condensation dehydration.
- Unfired hydrotalcite, semi-fired hydrotalcite and fired hydrotalcite can be distinguished by the saturated water absorption rate.
- the saturated water absorption rate of the semi-baked hydrotalcite is 1% by mass or more and less than 20% by mass.
- the saturated water absorption rate of uncalcined hydrotalcite is less than 1% by mass, and the saturated water absorption rate of calcined hydrotalcite is 20% by mass or more.
- the saturated water absorption rate of the semi-baked hydrotalcite is preferably 3% by mass or more and less than 20% by mass, and more preferably 5% by mass or more and less than 20% by mass.
- uncalcined hydrotalcite, semi-calcined hydrotalcite and calcined hydrotalcite can be distinguished by the thermogravimetric reduction rate measured by thermogravimetric analysis.
- the thermogravimetric reduction rate of the semi-baked hydrotalcite at 280 ° C. is less than 15% by mass, and the thermogravimetric reduction rate at 380 ° C. is 12% by mass or more.
- the thermogravimetric reduction rate of uncalcined hydrotalcite at 280 ° C. is 15% by mass or more
- the thermogravimetric reduction rate of calcined hydrotalcite at 380 ° C. is less than 12% by mass.
- thermogravimetric reduction rate 100 ⁇ (mass before heating-mass when a predetermined temperature is reached) / mass before heating (ii) Can be obtained at.
- uncalcined hydrotalcite, semi-calcined hydrotalcite and calcined hydrotalcite can be distinguished by the peak and relative intensity ratio measured by powder X-ray diffraction.
- Semi-baked hydrotalcite shows a peak in which 2 ⁇ is split into two in the vicinity of 8 to 18 ° by powder X-ray diffraction, or a peak with a shoulder due to the combination of the two peaks, and the peak or shoulder that appears on the low angle side.
- uncalcined hydrotalcite has only one peak near 8 to 18 °, or the relative intensity ratio of the diffraction intensity of the peak or shoulder appearing on the low angle side and the peak or shoulder appearing on the high angle side is in the above range. Be outside.
- the calcined hydrotalcite does not have a characteristic peak in the region of 8 ° to 18 °, but has a characteristic peak in the region of 43 °.
- the powder X-ray diffraction measurement is performed by a powder X-ray diffractometer (Empyrean manufactured by PANalytical), anti-cathode CuK ⁇ (1.5405 ⁇ ), voltage: 45 V, current: 40 mA, sampling width: 0.
- the measurement was performed under the conditions of 0260 °, scanning speed: 0.0657 ° / s, and measurement diffraction angle range (2 ⁇ ): 5.0131 to 79.9711 °.
- the peak search uses the peak search function of the software attached to the diffractometer, and "minimum significance: 0.50, minimum peak tip: 0.01 °, maximum peak tip: 1.00 °, peak base width: 2". It can be performed under the condition of "0.00 °, method: minimum value of second derivative".
- BET specific surface area of the semi-calcined hydrotalcites and calcined hydrotalcites are both preferably 1 ⁇ 250m 2 / g, more preferably 5 ⁇ 200m 2 / g. These BET specific surface areas can be calculated by adsorbing nitrogen gas on the sample surface using a specific surface area measuring device (Macsorb HM Model 1210, manufactured by Mountech) according to the BET method, and using the BET multipoint method.
- Macsorb HM Model 1210 manufactured by Mountech
- the particle size of the semi-baked hydrotalcite is preferably 1 to 1,000 nm, more preferably 10 to 800 nm. These particle sizes are median diameters of the particle size distribution when the particle size distribution is prepared on a volume basis by laser diffraction / scattering type particle size distribution measurement (JIS Z8825).
- the semi-baked hydrotalcite one that has been surface-treated with a surface treatment agent can be used.
- a surface treatment agent used for the surface treatment for example, higher fatty acids, alkylsilanes, silane coupling agents and the like can be used, and among them, higher fatty acids and alkylsilanes are preferable.
- the surface treatment agent one kind or two or more kinds can be used.
- higher fatty acids examples include higher fatty acids having 18 or more carbon atoms such as stearic acid, montanic acid, myristic acid, and palmitic acid, and stearic acid is preferable. These can be used alone or in combination of two or more.
- alkylsilanes include methyltrimethoxysilane, ethyltrimethoxysilane, hexyltrimethoxysilane, octyltrimethoxysilane, decyltrimethoxysilane, octadecyltrimethoxysilane, dimethyldimethoxysilane, octyltrimethoxysilane, and n-octadecyl. Examples thereof include dimethyl (3- (trimethoxysilyl) propyl) ammonium chloride. These can be used alone or in combination of two or more.
- silane coupling agent examples include 3-glycidyloxypropyltrimethoxysilane, 3-glycidyloxypropyltriethoxysilane, 3-glycidyloxypropyl (dimethoxy) methylsilane and 2- (3,4-epoxycyclohexyl) ethyltrimethoxy.
- Epoxy-based silane coupling agents such as silane; mercapto-based silane coupling agents such as 3-mercaptopropyltrimethoxysilane, 3-mercaptopropyltriethoxysilane, 3-mercaptopropylmethyldimethoxysilane and 11-mercaptoundecyltrimethoxysilane 3-Aminopropyltrimethoxysilane, 3-aminopropyltriethoxysilane, 3-aminopropyldimethoxymethylsilane, N-phenyl-3-aminopropyltrimethoxysilane, N-methylaminopropyltrimethoxysilane, N- (2) Amino-based silane coupling agents such as -aminoethyl) -3-aminopropyltrimethoxysilane and N- (2-aminoethyl) -3-aminopropyldimethoxymethylsilane; Coupling agents, vinyl-based
- the surface treatment of semi-baked hydrotalcite or the like is performed, for example, by stirring and dispersing untreated semi-baked hydrotalcite or the like at room temperature with a mixer, adding a surface treatment agent and spraying, and stirring for 5 to 60 minutes.
- a mixer a known mixer can be used, and examples thereof include blenders such as V blenders, ribbon blenders and bubble cone blenders, mixers such as Henshell mixers and concrete mixers, ball mills and cutter mills.
- the above-mentioned higher fatty acid, alkylsilanes or silane coupling agent can be added to perform surface treatment.
- the amount of the surface treatment agent used varies depending on the type of hydrotalcite, the type of surface treatment agent, and the like, but is preferably 1 to 10 parts by mass with respect to 100 parts by mass of hydrotalcite that has not been surface-treated.
- the surface-treated semi-firing hydrotalcite is included in the concept of "semi-firing hydrotalcite" in the present invention.
- the content of semi-baked hydrotalcite in the resin composition of the present invention is more than 45% by mass with respect to 100% by mass of the non-volatile content of the resin composition from the viewpoint of exhibiting the sealing performance of the resin composition in the present invention. is there.
- This content is preferably 50% by mass or more, more preferably 55% by mass or more, still more preferably 60% by mass or more.
- the upper limit of this content is not particularly limited as long as the effect of the present invention is exhibited, but from the viewpoint of transparency of the resin composition and the like, this content is preferably 80% by mass or less, more preferably 80% by mass or less. It is 75% by mass or less, more preferably 70% by mass or less.
- the resin composition of the present invention may contain a filler other than semi-baked hydrotalcite as long as the effects of the present invention are not impaired.
- Fillers other than semi-baked hydrotalcite include, for example, silica, alumina, barium sulfate, aluminum hydroxide, magnesium hydroxide, calcium carbonate, magnesium carbonate, boron nitride, aluminum borate, barium titanate, barium titanate, and titanium.
- Inorganic fillers such as calcium acid, magnesium titanate, bismuth titanate, titanium oxide, zirconium oxide, barium zirconate, calcium zirconate, silicate, and organic fillers such as rubber particles, silicone powder, nylon powder, and fluororesin powder. Can be mentioned.
- the content of the filler other than the semi-baked hydrotalcite is preferably 50 parts by mass or less, more preferably 30 parts by mass or less, and further preferably 20 parts by mass with respect to 100 parts by mass of the content of the semi-baked hydrotalcite. It is not more than 10 parts by mass, and even more preferably 10 parts by mass or less.
- the resin composition of the present invention may further contain a tackifier.
- the tackifier also called a tack fire, is a component that imparts stickiness to the composition.
- the tackifier is not particularly limited, and is terpene resin, modified terpene resin (hydrogenated terpene resin, terpene phenol copolymer resin, aromatic modified terpene resin, etc.), kumaron resin, inden resin, petroleum resin (fat).
- Group petroleum resins, hydrogenated alicyclic petroleum resins, aromatic petroleum resins, aliphatic aromatic copolymer petroleum resins, alicyclic petroleum resins, dicyclopentadiene petroleum resins and their hydrides, etc. are preferable. used.
- Examples of commercially available products that can be used as a tackifier include the following.
- Examples of the terpene resin include YS resin PX and YS resin PXN (both manufactured by Yasuhara Chemical Co., Ltd.), and examples of the aromatic-modified terpene resin include YS resin TO and TR series (both manufactured by Yasuhara Chemical Co., Ltd.).
- Examples of the terpene resin include Clearon P, Clearon M, and Clearon K series (all manufactured by Yasuhara Chemical Co., Ltd.).
- Examples of the terpene phenol copolymer resin include YS Polystar 2000, Polystar U, Polystar T, Polystar S, and Mighty Ace G (all of which are manufactured by Yasuhara Chemical Co., Ltd.).
- the softening point of the tackifier is preferably 50 to 200 ° C, more preferably 90 to 180 ° C, and 100 to 150 from the viewpoint that the sheet is softened in the laminating step of the resin composition sheet and has desired heat resistance. °C is more preferable.
- the softening point is measured by the ring-and-ball method according to JIS K2207.
- the tackifier may be used alone or in combination of two or more.
- the content of the tackifier in the resin composition is not particularly limited. However, from the viewpoint of maintaining good sealing performance of the resin composition, when a tackifier is used, the content thereof is preferably 50% by mass or less with respect to 100% by mass of the non-volatile content of the resin composition. , 40% by mass or less is more preferable, and 30% by mass or less is further preferable. On the other hand, when a tackifier is used from the viewpoint of having sufficient adhesiveness, the content thereof is preferably 5% by mass or more, preferably 10% by mass or more, based on 100% by mass of the non-volatile content of the resin composition. More preferred.
- Petroleum resin is preferable from the viewpoint of adhesiveness, sealing performance, transparency and the like of the resin composition.
- Examples of petroleum resins include aliphatic petroleum resins, aromatic petroleum resins, aliphatic aromatic copolymer petroleum resins, and alicyclic petroleum resins. From the viewpoints of adhesiveness, sealing performance, compatibility, etc. of the resin composition, aromatic petroleum resins, aliphatic aromatic copolymer petroleum resins, and alicyclic petroleum resins are more preferable. Further, from the viewpoint of improving transparency, an alicyclic petroleum resin is particularly preferable. As the alicyclic petroleum resin, one obtained by hydrogenating an aromatic petroleum resin can also be used.
- the hydrogenation rate of the alicyclic petroleum resin is preferably 30 to 99%, more preferably 40 to 97%, still more preferably 50 to 90%. If the hydrogenation rate is too low, there is a tendency for the transparency to decrease due to coloring, and if the hydrogenation rate is too high, the production cost tends to increase.
- the hydrogenation rate can be determined from the ratio of 1 H-NMR peak intensities of hydrogen in the aromatic ring before and after hydrogenation.
- a cyclohexane ring-containing hydrogenated petroleum resin and a dicyclopentadiene hydrogenated petroleum resin are particularly preferable. Petroleum resin may be used alone or in combination of two or more.
- the number average molecular weight Mn of the petroleum resin is preferably 100 to 2,000, more preferably 700 to 1,500, and even more preferably 500 to 1,000.
- the resin composition of the present invention may contain a curing agent and / or a curing accelerator (preferably a curing accelerator).
- a curing agent and the curing accelerator preferably a curing accelerator.
- the curing agent and the curing accelerator only one type may be used, or two or more types may be used in combination.
- the curing agent include imidazole compounds, tertiary / quaternary amine compounds, dimethylurea compounds, organic phosphine compounds, primary / secondary amine compounds, and the like.
- the curing accelerator include imidazole compounds, tertiary and quaternary amine compounds, dimethylurea compounds, organic phosphine compounds and the like.
- Examples of the imidazole compound which is the curing agent and / or the curing accelerator in the present invention include 1H-imidazole, 2-methylimidazole, 2-phenyl-4-methylimidazole, 2-ethyl-4-methylimidazole, and 1-cyanoethyl.
- Specific examples of the compound include Curesol 2MZ, 2P4MZ, 2E4MZ, 2E4MZ-CN, C11Z, C11Z-CN, C11Z-CNS, C11Z-A, 2PHZ, 1B2MZ, 1B2PZ, 2PZ, C17Z, 1.2DMZ, 2P4MHZ-PW, 2MZ-A, 2MA-OK (both manufactured by Shikoku Kasei Kogyo Co., Ltd.) and the like can be mentioned.
- the tertiary / quaternary amine compound as the curing agent and / or curing accelerator in the present invention is not particularly limited, and is, for example, a quaternary ammonium salt such as tetramethylammonium bromide or tetrabutylammonium bromide; DBU ( 1,8-diazabicyclo [5.4.0] undecene-7), DBN (1,5-diazabicyclo [4.3.0] nonen-5), DBU-phenol salt, DBU-octylate, DBU-p -Diazabicyclo compounds such as toluene sulfonate, DBU-gerate, DBU-phenol novolak resin salt; benzyl dimethylamine, 2- (dimethylaminomethyl) phenol, 2,4,6-tris (dimethylaminomethyl) phenol (TAP) ) And other tertiary amines and salts thereof, dimethylurea compounds such as aromatic dimethylurea and ali
- Examples of the primary and secondary amine compounds as the curing agent in the present invention include the aliphatic amines diethylenetriamine, triethylenetetraamine, tetraethylenepentamine, trimethylhexamethylenediamine, 2-methylpentamethylenediamine, and 1 , 3-Bisaminomethylcyclohexane, Dipropylenediamine, diethylaminopropylamine, Bis (4-aminocyclohexyl) methane, Norbornenediamine, 1,2-diaminocyclohexane, etc., N-aminoethylpyverazine, which is an alicyclic amine, Examples thereof include diaminodiphenylmethane, m-phenylenediamine, m-xylenediamine, metaphenylenediamine, diaminodiphenylmethane, diaminodiphenylsulfone, diethyltoluenediamine, which are aromatic amine
- dimethylurea compound as a curing agent and / or curing accelerator in the present invention examples include DCMU (3- (3,4-dichlorophenyl) -1,1-dimethylurea) and U-CAT3512T (manufactured by San-Apro).
- DCMU 3- (3,4-dichlorophenyl) -1,1-dimethylurea
- U-CAT3512T manufactured by San-Apro
- Aromatic dimethylurea such as, and aliphatic dimethylurea such as U-CAT3503N (manufactured by San-Apro Co., Ltd.) can be mentioned.
- aromatic dimethylurea is preferably used from the viewpoint of curability.
- organophosphine compound as a curing agent and / or a curing accelerator in the present invention examples include triphenylphosphine, triphenylphosphinenium tetra-p-trilborate, tetraphenylphosphonium tetraphenylborate, and tri-tert-butylphosphonium tetraphenyl.
- examples thereof include borate, (4-methylphenyl) triphenylphosphonium thiocyanate, tetraphenylphosphonium thiocyanate, butyltriphenylphosphonium thi
- organic phosphine compound examples include TPP, TPP-MK, TPP-K, TTBuP-K, TPP-SCN, TPP-S (manufactured by Hokuko Chemical Industry Co., Ltd.) and the like.
- the total content of the curing agent and the curing accelerator in the resin composition is not particularly limited, but from the viewpoint of preventing deterioration of the transparency of the sealing layer (resin composition layer), the resin composition is non-volatile. 5% by mass or less is preferable, and 1% by mass or less is more preferable with respect to 100% by mass per minute. On the other hand, the total is preferably 0.0005% by mass or more, more preferably 0.001% by mass or more, based on 100% by mass of the non-volatile content of the resin composition from the viewpoint of suppressing the tack of the sealing layer.
- the content of the curing accelerator in the resin composition is not particularly limited, but from the viewpoint of preventing deterioration of the transparency of the sealing layer (resin composition layer), the non-volatile content of the resin composition is 100% by mass. On the other hand, 5% by mass or less is preferable, and 1% by mass or less is more preferable. On the other hand, the content is preferably 0.0005% by mass or more, more preferably 0.001% by mass or more, based on 100% by mass of the non-volatile content of the resin composition from the viewpoint of suppressing the tack of the sealing layer.
- the resin composition of the present invention may further contain a plasticizer.
- a plasticizer By using a plasticizer, the flexibility and moldability of the resin composition can be improved.
- the plasticizer is not particularly limited, but a material that is liquid at room temperature is preferably used.
- Specific examples of plasticizers include paraffin-based process oils, naphthenic process oils, liquid paraffins, polyethylene waxes, polypropylene waxes, mineral oils such as vaseline, castor oil, cottonseed oil, rapeseed oil, soybean oil, palm oil, palm oil, and olive oil. Examples thereof include vegetable oils such as, liquid polybutene, hydrogenated liquid polybutene, liquid polybutadiene, and liquid poly ⁇ -olefins such as hydrogenated liquid polybutadiene.
- liquid poly- ⁇ -olefins are preferable, and liquid polybutadiene is particularly preferable.
- the liquid poly- ⁇ -olefin preferably has a low molecular weight from the viewpoint of adhesiveness, and preferably has a weight average molecular weight in the range of 500 to 5,000, more preferably 1,000 to 3,000.
- One of these plasticizers may be used alone, or two or more of these plasticizers may be used in combination.
- “liquid” is a state of the plasticizer at room temperature (25 ° C.).
- the content thereof is preferably 50% by mass or less with respect to 100% by mass of the non-volatile content of the resin composition from the viewpoint of not adversely affecting the electronic device.
- the resin composition of the present invention may optionally contain components other than the above-mentioned components to the extent that the effects of the present invention are not impaired.
- components include resins other than the above-mentioned polyolefin resins (eg, epoxy resins, urethane resins, acrylic resins, polyamide resins, etc.); thickeners such as Orben and Benton; silicone-based, fluorine-based, and high-grade resins.
- Molecular-based antifoaming agents or leveling agents; adhesion-imparting agents such as triazole compounds, thiazole compounds, triazine compounds, and porphyrin compounds; and the like can be mentioned.
- the method for producing the resin composition of the present invention is not particularly limited as long as its water content can be sufficiently reduced.
- a resin composition having a reduced water content can be produced by mixing each component and, if necessary, a solvent, and drying the obtained mixture.
- Heating may be performed under normal pressure or reduced pressure.
- the heating temperature and heating time may vary depending on the ingredients used. A person skilled in the art can appropriately set the heating temperature and the heating time for sufficiently reducing the water content according to the components to be used.
- the present invention also provides a resin sheet having a support and a layer of the resin composition of the present invention provided on the support (hereinafter, may be abbreviated as "resin composition layer").
- the resin composition layer of the resin sheet may be formed by a method known to those skilled in the art. For example, it can be formed by preparing a varnish in which the above-mentioned components are dissolved in an organic solvent, applying the varnish on the support, and drying the varnish.
- the non-volatile content of the varnish is preferably 20 to 80% by mass, more preferably 30 to 70% by mass.
- organic solvent examples include ketones such as acetone, methyl ethyl ketone (MEK) and cyclohexanone, acetates such as ethyl acetate, butyl acetate, cellosolve acetate, propylene glycol monomethyl ether acetate and carbitol acetate, and cellosolves such as cellosolve.
- ketones such as acetone, methyl ethyl ketone (MEK) and cyclohexanone
- acetates such as ethyl acetate, butyl acetate
- cellosolve acetate propylene glycol monomethyl ether acetate and carbitol acetate
- cellosolves such as cellosolve.
- carbitols such as butyl carbitol
- aromatic hydrocarbons such as toluene and xylene
- dimethylformamide dimethylacetamide
- Heating may be performed under normal pressure or reduced pressure.
- the heating temperature and heating time may vary depending on the ingredients used and the organic solvent.
- the heating temperature and heating time for sufficiently reducing the water content can be appropriately set by those skilled in the art depending on the components used and the organic solvent. Further, the preferable conditions for setting the water content of the resin composition layer to 2,500 ppm or less are as described above.
- a resin sheet is prepared using a resin composition containing a polyolefin-based resin having an acid anhydride group and a polyolefin-based resin having an epoxy group
- the acid anhydride group and the epoxy group are reacted to form a crosslinked structure.
- the resin composition By forming the resin composition, the moisture permeation resistance of the layer of the resin composition is enhanced, and a resin sheet having higher sealing performance (performance of blocking moisture and oxygen in the air, etc.) can be obtained.
- the thickness of the resin composition layer in the resin sheet is preferably 1 to 1000 ⁇ m, more preferably 2 to 800 ⁇ m.
- the support used for the resin sheet examples include polyolefins such as polyethylene, polypropylene, and polyvinyl chloride; cycloolefin polymers; polyesters such as polyethylene terephthalate (hereinafter, may be abbreviated as “PET”) and polyethylene naphthalate; Polypropylene; Examples thereof include plastic films such as polyethylene.
- the surface of the support to be joined to the resin composition layer may be subjected to a mold release treatment.
- the mold release treatment include a mold release treatment using a mold release agent such as a silicone resin-based mold release agent, an alkyd resin-based mold release agent, and a fluororesin-based mold release agent.
- the thickness of the support is not particularly limited, but is preferably 10 to 150 ⁇ m, more preferably 20 to 100 ⁇ m, from the viewpoint of handleability of the resin sheet and the like.
- a support having a barrier layer for example, a plastic film having a barrier layer
- the barrier layer include an inorganic film such as a silica-deposited film, a silicon nitride film, and a silicon oxide film.
- the barrier layer may be composed of a plurality of layers of a plurality of inorganic films (for example, a silica-deposited film). Further, the barrier layer may be composed of an organic substance and an inorganic substance, or may be a composite multilayer of an organic layer and an inorganic film.
- the support having a barrier layer for example, water vapor transmission rate (WVTR) can be used high barrier plastic film is 0.0005 (g / m 2 / 24hr ) or less.
- WVTR water vapor transmission rate
- the high barrier property plastic film for example, an inorganic film such as silicon oxide (silica), aluminum oxide, magnesium oxide, silicon nitride, silicon nitride oxide, SiCN, or amorphous silicon is applied to the surface of the plastic film by a chemical vapor deposition method (for example).
- WVTR can be used a barrier plastic film in the 0.01 (g / m 2 / 24hr ) or 1 (g / m 2 / 24hr ) or less.
- a medium barrier plastic film for example, an inorganic film containing an inorganic substance such as silicon oxide (silica), aluminum oxide, magnesium oxide, silicon nitride, silicon nitride oxide, SiCN, and amorphous silicon is vapor-deposited on the surface of the base material.
- the water vapor permeability can be measured as follows. First, a test piece punched to 60 mm ⁇ is produced from a plastic film having a barrier layer. According to JIS Z 0208: 1976, 7.5 g of calcium chloride is weighed into an aluminum moisture permeable cup having a permeation area of 2.826 ⁇ 10 -3 m 2 (60 mm ⁇ ), and the test piece is attached to the moisture permeable cup. Add calcium chloride and measure the initial mass of the moisture-permeable cup with the test piece attached with a precision balance. Next, the moisture permeable cup was allowed to stand in a constant temperature test room at a temperature of 40 ° C.
- a commercially available product may be used as the support having the barrier layer.
- Commercially available products of medium-barrier plastic films include, for example, “Clarista CI” manufactured by Kuraray, "Tech Barrier HX”, “Tech Barrier LX” and “Tech Barrier L” manufactured by Mitsubishi Plastics, and “IB” manufactured by Dai Nippon Printing Co., Ltd.
- Examples of commercially available high-barrier plastic films such as “PET-PXB” and "GL, GX series” manufactured by Toppan Printing Co., Ltd. include “X-BARRIER” manufactured by Mitsubishi Plastics Co., Ltd.
- the protective film can be laminated on the resin composition layer using a known device.
- the equipment used for laminating the protective film include a roll laminator, a press machine, and a vacuum pressurizing laminator.
- the protective film examples include the plastic film mentioned above. It is preferable that the surface of the protective film to be bonded to the resin composition layer is subjected to a mold release treatment.
- the mold release treatment include a mold release treatment using a mold release agent such as a silicone resin-based mold release agent, an alkyd resin-based mold release agent, and a fluororesin-based mold release agent.
- the thickness of the protective film is not particularly limited, but is preferably 10 to 150 ⁇ m, more preferably 20 to 100 ⁇ m, from the viewpoint of handleability of the resin sheet and the like.
- the protective film it is preferable to use a protective film having a barrier layer in order to prevent the resin composition layer from absorbing moisture after drying.
- the protective film having a barrier layer include the plastic film having the barrier layer described above.
- the plastic film having a barrier layer used for the protective film it is preferable to use the above-mentioned medium barrier plastic film from the viewpoint of cost and the like.
- the resin composition and resin sheet of the present invention can be used for encapsulating electronic devices.
- the electronic device is more preferably an organic EL device or a moisture-sensitive electronic device such as a solar cell. That is, the resin composition and the resin sheet of the present invention can be particularly suitably used for sealing an electronic device that is sensitive to moisture, such as an organic EL device and a solar cell.
- Example 1 A varnish having a blending ratio shown in the table below was prepared by the following procedure, and a resin sheet was prepared using the obtained varnish.
- the amount (part) of each component used in the table below indicates the amount of the non-volatile component of each component in the varnish.
- the table below shows the content of the semi-firing hydrotalcite used as the semi-firing hydrotalcite with respect to 100% by mass of the non-volatile content of the resin composition.
- a maleic anhydride-modified liquid polybutene (HV-300M, Toho Chemical Industry Co., Ltd.) was added to a swazole solution (nonvolatile content 60%) of a cyclohexane ring-containing saturated hydrocarbon resin (tacking agent; Archon P125, manufactured by Arakawa Chemical Industry Co., Ltd.).
- a swazole solution nonvolatile content 60%
- a cyclohexane ring-containing saturated hydrocarbon resin tacking agent; Archon P125, manufactured by Arakawa Chemical Industry Co., Ltd.
- Polybutene HV-1900, manufactured by JXTG Energy Co., Ltd.
- DHT-4C semi-baked hydrotalcite
- the obtained varnish is uniformly applied with a die coater on the release-treated surface of the polyethylene terephthalate (PET) film "SP4020" (PET: 50 ⁇ m: manufactured by Toyo Cloth Co., Ltd.) treated with a silicone-based mold release agent. , 130 ° C. for 30 minutes and then 160 ° C. for 30 minutes to obtain a resin sheet having a resin composition layer having a thickness of 25 ⁇ m.
- PET polyethylene terephthalate
- Example 2 The varnish and thickness of the resin composition are the same as in Example 1 except that the amount of semi-baked hydrotalcite (DHT-4C, manufactured by Kyowa Chemical Industry Co., Ltd.) is changed from 300 parts to 250 parts. A resin sheet having a resin composition layer of 25 ⁇ m was prepared.
- DHT-4C semi-baked hydrotalcite
- Example 3 The varnish and thickness of the resin composition are the same as in Example 1 except that the amount of semi-baked hydrotalcite (DHT-4C, manufactured by Kyowa Chemical Industry Co., Ltd.) is changed from 300 parts to 200 parts. A resin sheet having a resin composition layer of 25 ⁇ m was prepared.
- DHT-4C semi-baked hydrotalcite
- Example 4 The varnish and thickness of the resin composition are the same as in Example 1 except that the amount of semi-baked hydrotalcite (DHT-4C, manufactured by Kyowa Chemical Industry Co., Ltd.) is changed from 300 parts to 100 parts. A resin sheet having a resin composition layer of 25 ⁇ m was prepared.
- DHT-4C semi-baked hydrotalcite
- ⁇ Comparative example 1> A varnish having a blending ratio shown in the table below was prepared by the following procedure, and a resin sheet was prepared using the obtained varnish.
- the amount (part) of each component used in the table below indicates the amount of the non-volatile component of each component in the varnish.
- the table below shows the content of semi-baked hydrotalcite with respect to 100% by mass of the non-volatile content of the resin composition.
- a maleic anhydride-modified liquid polybutene (HV-300M, Toho Chemical Industry Co., Ltd.) was added to a swazole solution (nonvolatile content 60%) of a cyclohexane ring-containing saturated hydrocarbon resin (tacking agent; Archon P125, manufactured by Arakawa Chemical Industry Co., Ltd.).
- a swazole solution nonvolatile content 60%
- a cyclohexane ring-containing saturated hydrocarbon resin tacking agent; Archon P125, manufactured by Arakawa Chemical Industry Co., Ltd.
- Polybutene HV-1900, manufactured by JXTG Energy Co., Ltd.
- DHT-4C semi-baked hydrotalcite
- a swazole solution (nonvolatile content 20%) of a glycidyl methacrylate-modified propylene-butene random copolymer (T-YP341, manufactured by Seikou PMC), a curing accelerator (TAP, manufactured by Kayaku Akzo) and toluene.
- T-YP341 glycidyl methacrylate-modified propylene-butene random copolymer
- TAP curing accelerator
- toluene toluene
- ⁇ Comparative example 2> A varnish having a resin composition was prepared in the same manner as in Example 1, and the obtained varnish was released from a PET film "SP4020" (PET: 50 ⁇ m: manufactured by Toyo Cloth Co., Ltd.) treated with a silicone-based mold release agent.
- a resin sheet having a resin composition layer having a thickness of 25 ⁇ m was obtained by uniformly coating the mold-treated surface with a die coater and heating at 130 ° C. for 30 minutes.
- a varnish having a resin composition was prepared in the same manner as in Example 4, and the obtained varnish was released from a PET film "SP4020" (PET: 50 ⁇ m: manufactured by Toyo Cloth Co., Ltd.) treated with a silicone-based mold release agent.
- a resin sheet having a resin composition layer having a thickness of 25 ⁇ m was obtained by uniformly coating the mold-treated surface with a die coater and heating at 130 ° C. for 60 minutes.
- the transparency is determined by the total light transmittance
- the moisture permeability is determined by the average moisture penetration distance
- the portion to be sealed by the internal moisture was evaluated by the reflectance ratio.
- the temperature of the electric furnace was raised to 250 ° C.
- the desorbed water from the sample collected in the Karl Fischer test solution was measured mass of water at ordinary method. From the measured mass of water, the water content (ppm) of the resin composition layer was calculated based on the mass of the entire resin composition. The results are shown in the table below.
- the resin sheets produced in Examples and Comparative Examples were cut to a length of 50 mm and a width of 20 mm, and the cut resin sheets were cut into glass plates (length 76 mm, width 26 mm and thickness 1.2 mm microslide glass (Matsunami Glass Industry Co., Ltd.).
- the white slide glass S1112 edge polishing No. 2 was laminated using a batch type vacuum laminator (Nichigo Morton Co., Ltd., V-160) so that the resin composition layer and the glass plate were in contact with each other. After a temperature of 80 ° C. and a depressurization time of 30 seconds, the pressurization was performed at a pressure of 0.3 MPa for 30 seconds.
- Fiber type spectrophotometer (MCPD-7700, type 311C, manufactured by Otsuka Electronics Co., Ltd., external light source unit: halogen lamp MC-2564 (24V, 24V,) equipped with a ⁇ 60mm integrating sphere (model name SRS-99-010, reflectance 99%)
- the total light transmittance (%) at a wavelength of 450 nm was calculated using 150 W specification)) and evaluated according to the following criteria. The results are shown in the table below. The distance was set to 0 mm, and glass was used as a reference. Good ( ⁇ ): Total light transmittance is 90% or more Poor ( ⁇ ): Total light transmittance is less than 90%
- Alkaline-free glass 50 mm ⁇ 50 mm square was washed with boiling isopropeel alcohol for 5 minutes and dried at 150 ° C. for 30 minutes or more. Then, UV ozone cleaning of the non-alkali glass was carried out. A calcium film (purity 99.8%) was deposited on the washed non-alkali glass using a mask having a distance of 2 mm from the end (thickness 200 nm).
- the distance from the end of the evaluation sample obtained as described above to the calcium film was measured at 8 points by Mitutoyo's Measuring Microscope MF-U, and the average value was defined as X2.
- the evaluation sample was put into a constant temperature and humidity chamber set at a temperature of 85 ° C. and a relative humidity of 85% RH.
- the distance from the end of the evaluation sample to the calcium film 40 hours after being put into the constant temperature and humidity chamber was measured at 8 points, and the average value was defined as X1 (mm).
- Moisture resistance was evaluated. The higher the moisture permeation resistance, the slower the rate of moisture intrusion, and the smaller the value of the average moisture intrusion distance X.
- the results are shown in the table below. When X is less than 0.1 mm, it is described as " ⁇ 0.1" in the table below. Further, with respect to Comparative Examples 3 and 4 in which X1 could not be measured due to deterioration of the calcium film due to moisture, the result was evaluated as defective (x).
- the reflectance spectrum of the evaluation sample obtained as described above was obtained from a fiber spectrophotometer (MCPD-7700, type 311C, model 311C) equipped with a ⁇ 60 mm integrating sphere (model name SRS-99-010, reflectance 99%). Measurement was performed using an external light source unit manufactured by Otsuka Electronics Co., Ltd .: halogen lamp MC-2564 (24V, 150W specification)), and the reflectance (%) at a wavelength of 850 nm was calculated, and this value was defined as Y2.
- the evaluation sample was heated for 39 hours on a hot plate having a temperature of 80 ° C. in the glove box, and then the reflectance spectrum of the evaluated sample after heating was measured, and this value was set to Y1.
- the resin composition of the present invention and a resin sheet using the same are useful for encapsulating electronic devices (for example, organic EL devices, sensor devices, solar cells, etc.).
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Abstract
Description
[1] ポリオレフィン系樹脂および半焼成ハイドロタルサイトを含み、半焼成ハイドロタルサイトの含有量が、樹脂組成物の不揮発分100質量%に対して45質量%超であり、および含水率が、樹脂組成物全体に対する質量基準で2,500ppm以下である樹脂組成物。
[2] 含水率が、樹脂組成物全体に対する質量基準で2,000ppm以下である前記[1]に記載の樹脂組成物。
[3] 半焼成ハイドロタルサイトの含有量が、樹脂組成物の不揮発分100質量%に対して45質量%超80質量%以下である[1]または[2]に記載の樹脂組成物。
[4] 電子デバイスの封止に用いられる前記[1]~[3]のいずれか一つに記載の樹脂組成物。
[5] 電子デバイスが、有機ELデバイスまたは太陽電池である前記[4]に記載の樹脂組成物。
[6] 支持体と、該支持体上に設けられた前記[1]~[3]のいずれか一つに記載の樹脂組成物の層と、を有する樹脂シート。
[7] 電子デバイスの封止に用いられる前記[6]に記載の樹脂シート。
[8] 電子デバイスが、有機ELデバイスまたは太陽電池である前記[7]に記載の樹脂シート。
本発明の樹脂組成物は、ポリオレフィン系樹脂および半焼成ハイドロタルサイトを含む。半焼成ハイドロタルサイトを含む樹脂組成物から形成される封止層は、半焼成ハイドロタルサイトが外気中の水分を吸収するため、外気から侵入する水分による電子デバイスの劣化を抑制することができる。
本発明で使用し得るポリオレフィン系樹脂としては、オレフィン由来の骨格を有するものであれば特に限定されない。例えば、特許文献1に記載されているポリオレフィン系樹脂が、公知のものとして挙げられる。オレフィンは、1個のオレフィン性炭素-炭素二重結合を有するモノオレフィンおよび/または2個のオレフィン性炭素-炭素二重結合を有するジオレフィンが好ましい。モノオレフィンとしては、好ましくは、エチレン、プロピレン、1-ブテン、イソブチレン(イソブテン)、1-ペンテン、1-ヘキセン、1-ヘプテン、1-オクテン等のα-オレフィンが挙げられ、ジオレフィンとしては、好ましくは、1,3-ブタジエン、イソプレン、1,3-ペンタジエン、2,3-ジメチルブタジエン等が挙げられる。ポリオレフィン系樹脂中のオレフィン由来の骨格は、1種であっても2種以上であってよい。ポリオレフィン系樹脂は、1種のみを使用してもよく、2種以上を併用してもよい。
ハイドロタルサイトは、未焼成ハイドロタルサイト、半焼成ハイドロタルサイト、および焼成ハイドロタルサイトに分類することができる。樹脂組成物の透明性や耐透湿性の観点から、本発明においては半焼成ハイドロタルサイトを使用する。
(I)
(式中、M2+はMg2+、Zn2+などの2価の金属イオンを表し、M3+はAl3+、Fe3+などの3価の金属イオンを表し、An-はCO3 2-、Cl-、NO3 -などのn価のアニオンを表し、0<x<1であり、0≦m<1であり、nは正の数である。)
式(I)中、M2+は、好ましくはMg2+であり、M3+は、好ましくはAl3+であり、An-は、好ましくはCO3 2-である。
(式中、M2+はMg2+、Zn2+などの2価の金属イオンを表し、An-はCO3 2-、Cl-、NO3 -などのn価のアニオンを表し、xは2以上の正の数であり、zは2以下の正の数であり、mは正の数であり、nは正の数である。)
式(II)中、M2+は、好ましくはMg2+であり、An-は、好ましくはCO3 2-である。
飽和吸水率(質量%)
=100×(吸湿後の質量-初期質量)/初期質量 (i)
で求めることができる。
熱重量減少率(質量%)
=100×(加熱前の質量-所定温度に達した時の質量)/加熱前の質量 (ii)
で求めることができる。
本発明の樹脂組成物は、さらに粘着付与剤を含有していてもよい。粘着付与剤は、タッキファイヤーとも呼ばれ、組成物に粘着性を付与する成分である。粘着付与剤としては、特に限定されるものではなく、テルペン樹脂、変性テルペン樹脂(水素添加テルペン樹脂、テルペンフェノール共重合樹脂、芳香族変性テルペン樹脂等)、クマロン樹脂、インデン樹脂、石油樹脂(脂肪族系石油樹脂、水添脂環式石油樹脂、芳香族系石油樹脂、脂肪族芳香族共重合系石油樹脂、脂環族系石油樹脂、ジシクロペンタジエン系石油樹脂およびその水素化物等)が好ましく使用される。
本発明の樹脂組成物は、硬化剤および/または硬化促進剤(好ましくは硬化促進剤)を含んでいてもよい。硬化剤および硬化促進剤は、いずれも、1種のみを使用してもよく、2種以上を併用してもよい。硬化剤としては、例えば、イミダゾール化合物、3級・4級アミン系化合物、ジメチルウレア化合物、有機ホスフィン化合物、1級・2級アミン系化合物等が挙げられる。硬化促進剤としては、例えば、イミダゾール化合物、3級・4級アミン系化合物、ジメチルウレア化合物、有機ホスフィン化合物等が挙げられる。
本発明の樹脂組成物は、さらに可塑剤を含んでいてもよい。可塑剤を使用することにより、樹脂組成物の柔軟性や成形性を向上させることができる。可塑剤としては、特に限定はされないが、室温で液状の材料が好適に用いられる。可塑剤の具体例としては、パラフィン系プロセスオイル、ナフテン系プロセスオイル、流動パラフィン、ポリエチレンワックス、ポリプロピレンワックス、ワセリン等の鉱物油、ヒマシ油、綿実油、菜種油、大豆油、パーム油、ヤシ油、オリーブ油等の植物油、液状ポリブテン、水添液状ポリブテン、液状ポリブタジエン、水添液状ポリブタジエン等の液状ポリαオレフィン類等が挙げられる。本発明に使用する可塑剤としては、液状ポリαオレフィン類が好ましく、特に液状ポリブタジエンが好ましい。また液状ポリαオレフィンとしては接着性の観点から分子量が低いものが好ましく、重量平均分子量で500~5,000、さらには1,000~3,000の範囲のものが好ましい。これら可塑剤は1種を単独で使用してもよく、2種以上を組み合わせて使用してもよい。なお、ここで「液状」とは、室温(25℃)での可塑剤の状態である。可塑剤を使用する場合、電子デバイスに悪影響を及ぼさないという観点から、その含有量は、樹脂組成物の不揮発分100質量%に対して、50質量%以下が好ましい。
本発明の樹脂組成物には、本発明の効果を阻害しない程度に、上述した成分以外の成分を任意で含有させてもよい。このような成分としては、例えば、上述したポリオレフィン系樹脂以外の樹脂(例えば、エポキシ樹脂、ウレタン樹脂、アクリル樹脂、ポリアミド樹脂等);オルベン、ベントン等の増粘剤;シリコーン系、フッ素系、高分子系の消泡剤またはレベリング剤;トリアゾール化合物、チアゾール化合物、トリアジン化合物、ポルフィリン化合物等の密着性付与剤;等を挙げることができる。
本発明の樹脂組成物の製造方法は、その含水率を充分に低減し得る限り、特に限定は無い。例えば、各成分および必要に応じて溶媒を混合し、得られた混合物を乾燥することによって、含水率が低減された樹脂組成物を製造することができる。
本発明は、支持体と、該支持体上に設けられた本発明の樹脂組成物の層(以下「樹脂組成物層」と略称することがある)と、を有する樹脂シートも提供する。
本発明の樹脂組成物および樹脂シートは、電子デバイスの封止に用いることができる。電子デバイスは、より好ましくは有機ELデバイスまたは太陽電池等の水分に弱い電子デバイスである。即ち、本発明の樹脂組成物および樹脂シートは、特に有機ELデバイス、太陽電池等の水分に弱い電子デバイスの封止に好適に使用することができる。
実施例および比較例で用いた成分を以下に示す。
(ポリオレフィン系樹脂)
「HV-1900」(JXTGエネルギー社製):ポリブテン、数平均分子量2,900
「HV-300M」(東邦化学工業社製):無水マレイン酸変性液状ポリブテン、酸無水物基濃度0.77mmol/g、数平均分子量2,100
「T-YP341」(星光PMC社製):グリシジルメタクリレート変性プロピレン-ブテンランダム共重合体、プロピレン単位/ブテン単位71%/29%、エポキシ基濃度0.638mmol/g、数平均分子量155,000
(半焼成ハイドロタルサイト)
「DHT-4C」(協和化学工業社製):半焼成ハイドロタルサイト、平均粒子径400nm、BET比表面積15m2/g
(粘着付与剤)
「アルコンP125」(荒川化学社製):シクロヘキサン環含有飽和炭化水素樹脂、軟化点125℃
(硬化促進剤)
2,4,6-トリス(ジメチルアミノメチル)フェノール(以下「TAP」と略記する。)(化薬アクゾ社製):硬化促進剤
下記表に示す配合比のワニスを以下の手順で作製し、得られたワニスを用いて樹脂シートを作製した。なお、下記表に記載の各成分の使用量(部)は、ワニス中の各成分の不揮発分の量を示す。また、下記表には、半焼成ハイドロタルサイトとして使用した半焼成ハイドロタルサイトの、樹脂組成物の不揮発分100質量%に対する含有量を示す。
半焼成ハイドロタルサイト(DHT-4C、協和化学工業社製)の使用量を300部から250部に変えたこと以外は実施例1と同様の方法にて、樹脂組成物のワニス、および厚さ25μmの樹脂組成物層を有する樹脂シートを作製した。
半焼成ハイドロタルサイト(DHT-4C、協和化学工業社製)の使用量を300部から200部に変えたこと以外は実施例1と同様の方法にて、樹脂組成物のワニス、および厚さ25μmの樹脂組成物層を有する樹脂シートを作製した。
半焼成ハイドロタルサイト(DHT-4C、協和化学工業社製)の使用量を300部から100部に変えたこと以外は実施例1と同様の方法にて、樹脂組成物のワニス、および厚さ25μmの樹脂組成物層を有する樹脂シートを作製した。
下記表に示す配合比のワニスを以下の手順で作製し、得られたワニスを用いて樹脂シートを作製した。なお、下記表に記載の各成分の使用量(部)は、ワニス中の各成分の不揮発分の量を示す。また、下記表には、半焼成ハイドロタルサイトの、樹脂組成物の不揮発分100質量%に対する含有量を示す。
実施例1と同様の方法にて樹脂組成物のワニスを作製し、得られたワニスを、シリコーン系離型剤で処理されたPETフィルム「SP4020」(PET:50μm:東洋クロス社製)の離型処理面上に、ダイコーターにて均一に塗布し、130℃で30分間加熱することにより、厚さ25μmの樹脂組成物層を有する樹脂シートを得た。
実施例4と同様の方法にて樹脂組成物のワニスを作製し、得られたワニスを、シリコーン系離型剤で処理されたPETフィルム「SP4020」(PET:50μm:東洋クロス社製)の離型処理面上に、ダイコーターにて均一に塗布し、130℃で60分間加熱することにより、厚さ25μmの樹脂組成物層を有する樹脂シートを得た。
下記表1に示す比較例4の配合比のワニスを作製したこと以外は比較例3と同様の方法にて、厚さ25μmの樹脂組成物層を有する樹脂シートを作製した。
実施例および比較例で作製した樹脂シートを長さ70mmおよび幅40mmにカットし、支持体(即ち、シリコーン系離型剤で処理されたPETフィルム「SP4020」)を剥離し、よく乾燥したスクリューバイアルビン(VABH17、三菱ケミカルアナリテック社製)に、樹脂組成物層を折りたたんで入れ、カールフィッシャー測定器(CA310型、三菱ケミカルアナリテック社製)に直結した電気炉(VA-236S型、三菱ケミカルアナリテック社製)に入れた。N2気流中、電気炉の温度を250℃まで昇温し、測定試料から脱離した水をカールフィッシャー測定液に捕集し、定法にて水の質量を測定した。測定した水の質量から、樹脂組成物層の含水率(ppm)を、樹脂組成物全体に対する質量基準で算出した。結果を下記表に示す。
実施例および比較例で作製した樹脂シートを長さ50mmおよび幅20mmにカットし、カットした樹脂シートをガラス板(長さ76mm、幅26mmおよび厚さ1.2mmのマイクロスライドガラス(松浪ガラス工業社製白スライドグラスS1112 縁磨No.2)にバッチ式真空ラミネーター(ニチゴー・モートン社製、V-160)を用いて、樹脂組成物層とガラス板とが接触するようにラミネートした。ラミネート条件は、温度80℃、減圧時間30秒の後、圧力0.3MPaにて30秒加圧であった。その後、樹脂シートのPETフィルムを剥離し、露出した樹脂組成物層の光透過率スペクトルを、φ60mm積分球(型名SRS-99-010、反射率99%)を装着したファイバー式分光光度計(MCPD-7700、形式311C、大塚電子社製、外部光源ユニット:ハロゲンランプMC-2564(24V、150W仕様))を用いて測定し、波長450nmでの全光線透過率(%)を算出し、以下の基準で評価した。結果を下記表に示す。なお、積分球とサンプル(積層体)の距離を0mmとし、リファレンスとしてはガラスを用いた。
良好(○):全光線透過率が90%以上
不良(×):全光線透過率が90%未満
無アルカリガラス50mm×50mm角を煮沸したイソプロピールアルコールで5分間洗浄し、150℃において30分以上乾燥した。次いで無アルカリガラスのUVオゾン洗浄を実施した。端部からの距離を2mmとしたマスクを使用して、洗浄した無アルカリガラスにカルシウム膜(純度99.8%)を蒸着した(厚さ200nm)。
良好(○):Xが1mm未満
不良(×):Xが1mm以上、または水分によるカルシウム膜の劣化によりX1が測定不可
無アルカリガラス50mm×50mm角を煮沸したイソプロピールアルコールで5分間洗浄し、150℃において30分以上乾燥した。次いで無アルカリガラスのUVオゾン洗浄を実施した。端部からの距離を2mmとしたマスクを使用して、洗浄した無アルカリガラスにカルシウム膜(純度99.8%)を蒸着した(厚さ200nm)。
良好(○):反射率比Yが0.90以上
可(△):反射率比Yが0.90未満
不良(×):水分によるカルシウム膜の劣化により反射率スペクトルY1が測定不可
Claims (8)
- ポリオレフィン系樹脂および半焼成ハイドロタルサイトを含み、半焼成ハイドロタルサイトの含有量が、樹脂組成物の不揮発分100質量%に対して45質量%超であり、および含水率が、樹脂組成物全体に対する質量基準で2,500ppm以下である樹脂組成物。
- 含水率が、樹脂組成物全体に対する質量基準で2,000ppm以下である請求項1に記載の樹脂組成物。
- 半焼成ハイドロタルサイトの含有量が、樹脂組成物の不揮発分100質量%に対して45質量%超80質量%以下である請求項1または2に記載の樹脂組成物。
- 電子デバイスの封止に用いられる請求項1~3のいずれか一項に記載の樹脂組成物。
- 電子デバイスが、有機ELデバイスまたは太陽電池である請求項4に記載の樹脂組成物。
- 支持体と、該支持体上に設けられた請求項1~3のいずれか一項に記載の樹脂組成物の層と、を有する樹脂シート。
- 電子デバイスの封止に用いられる請求項6に記載の樹脂シート。
- 電子デバイスが、有機ELデバイスまたは太陽電池である請求項7に記載の樹脂シート。
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WO2013186992A1 (ja) * | 2012-06-14 | 2013-12-19 | 三井化学東セロ株式会社 | 太陽電池封止材および太陽電池モジュール |
WO2016152756A1 (ja) * | 2015-03-20 | 2016-09-29 | 味の素株式会社 | 封止体の製造方法 |
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JP2018162418A (ja) * | 2017-03-27 | 2018-10-18 | 味の素株式会社 | 封止用樹脂組成物および封止用シート |
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WO2016152756A1 (ja) * | 2015-03-20 | 2016-09-29 | 味の素株式会社 | 封止体の製造方法 |
WO2017057708A1 (ja) * | 2015-09-30 | 2017-04-06 | 味の素株式会社 | 封止用樹脂組成物 |
JP2018162418A (ja) * | 2017-03-27 | 2018-10-18 | 味の素株式会社 | 封止用樹脂組成物および封止用シート |
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