Resin composition, method for producing same, and molded body

Abstract

The purpose of the present invention is to provide a resin composition capable of forming a molded body having excellent solvent resistance and heat sealability. The present invention provides a resin composition containing a crystalline norbornene-based ring-opened polymer hydride and an amorphous cyclic olefin-based polymer, wherein: the norbornene-based ring-opened polymer hydride is a ring-opened polymer hydride containing a norbornene-derived structural unit; the meso-dyad ratio of a cis-structural unit, which is represented by formula (I), contained in the norbornene-derived structural unit is less than 30%; and the mass ratio of the norbornene-based ring-opened polymer hydride to the cyclic olefin-based polymer is 75 / 25 to 95 / 5.

Description

Resin composition, method for producing the same, and molded article

[0001] The present invention relates to a resin composition, a method for producing the same, and a molded article.

[0002] Polymers (hydrogenated norbornene ring-opening polymers) obtained by hydrogenating ring-opening polymers obtained by ring-opening polymerization of a monomer composition containing norbornene have an excellent balance of properties such as heat resistance, transparency, light resistance, low water absorbency, water vapor barrier properties, chemical resistance, solvent resistance, dielectric properties, low birefringence, rigidity, and laser resistance, and are therefore used in a wide range of fields as optical materials, medical equipment, electrical insulating materials, equipment for processing electronic components, etc. Here, studies have been conducted to further improve the performance of resin compositions containing hydrogenated norbornene ring-opening polymers.

[0003] For example, Patent Document 1 discloses a polymer composition containing a crystalline cyclic olefin polymer and an amorphous cyclic olefin polymer, each having a predetermined weight average molecular weight, and the content of the crystalline cyclic olefin polymer is within a predetermined range. According to Patent Document 1, the polymer composition has excellent transparency and solvent crack resistance.

[0004] Japanese Patent Application Laid-Open No. 2007-016102

[0005] However, the above-mentioned conventional compositions have room for further improvement in terms of improving the resistance of the resulting molded article to solvents (solvent resistance) and increasing the seal strength of the heat-sealed portion of the molded article (improving heat sealability).

[0006] Therefore, an object of the present invention is to provide a resin composition capable of forming a molded article having excellent solvent resistance and heat sealability, a method for producing the same, and a molded article having excellent solvent resistance and heat sealability.

[0007] The present inventors have conducted extensive research to solve the above problems and have found that a molded article having excellent solvent resistance and heat sealability can be formed by using a resin composition containing a crystalline hydrogenated norbornene ring-opening polymer having predetermined properties and an amorphous cyclic olefin polymer in a predetermined ratio, thereby completing the present invention.

[0008] That is, the present invention aims to advantageously solve the above-mentioned problems, and provides the following resin compositions [1] to [6], the following molded article [7], and the following method for producing the resin composition [8].

[0009] [1] A resin composition comprising a crystalline hydrogenated norbornene ring-opening polymer and an amorphous cyclic olefin polymer, wherein the hydrogenated norbornene ring-opening polymer is a hydrogenated ring-opening polymer containing a structural unit derived from norbornene, and the norbornene-derived structural unit contains a compound represented by the following formula (I): A resin composition in which the ratio of meso dyads of structural units having a cis-1,3-cyclopentane structure represented by formula (I) is less than 30%, and the mass ratio of the hydrogenated norbornene ring-opening polymer to the cyclic olefin polymer (hydrogenated norbornene ring-opening polymer / cyclic olefin polymer) is 75 / 25 or more and 95 / 5 or less. Thus, by using a resin composition in which the mass ratio of the crystalline hydrogenated norbornene ring-opening polymer to the amorphous cyclic olefin polymer is within the above-mentioned range, and the ratio of meso dyads of structural units having a cis-1,3-cyclopentane structure represented by formula (I) (hereinafter, sometimes referred to as "cis structural units (I)") contained in the norbornene-derived structural units in the hydrogenated norbornene ring-opening polymer is less than the above-mentioned value, a molded article having excellent solvent resistance and heat sealability can be obtained. In the present invention, the "proportion of meso dyads" of the cis structural units (I) is １３It can be obtained as the ratio of the meso-dyad signal intensity to the total signal intensity of the meso-dyad and the racemo-dyad observed during C-NMR measurement. More specifically, the "meso-dyad ratio" of the "structural unit having a cis-1,3-cyclopentane structure represented by formula (I)" can be determined using the method described in the Examples of this specification. In addition, in the present invention, a polymer being "crystalline" means that a melting point can be observed by differential scanning calorimetry (DSC) by optimizing the measurement conditions, etc., and a polymer being "amorphous" means that a melting point cannot be observed by differential scanning calorimetry (DSC). The "crystalline" and "amorphous" properties of a polymer are determined by the stereoregularity of the polymer chain.

[0010] [2] The resin composition according to [1], wherein the norbornene-based ring-opening polymer hydrogenated product contains 90% by mass or more of the norbornene-derived structural units. When the norbornene-based ring-opening polymer hydrogenated product contains 90% by mass or more of the norbornene-derived structural units, the heat resistance can be improved. In the present invention, the proportion of each structural unit in the total structural units of the polymer is as follows: １ It can be identified by NMR (nuclear magnetic resonance) measurement such as H-NMR measurement.

[0011] [3] The resin composition according to [1] or [2] above, wherein the glass transition temperature of the cyclic olefin polymer is 60°C or higher and 110°C or lower. When the glass transition temperature of the cyclic olefin polymer is within the above-mentioned range, the heat sealability of the molded product can be further improved. In addition, the heat resistance of the cyclic olefin polymer can be sufficiently ensured. In the present invention, the "glass transition temperature" can be measured using the method described in the examples of this specification.

[0012] [4] The hydrogenated norbornene ring-opening polymer further has the following formula (II): The resin composition according to any one of [1] to [3] above, which contains a structural unit having a trans-1,3-cyclopentane structure represented by the following formula: wherein the proportion of the structural unit having the trans-1,3-cyclopentane structure in the total of the structural unit having the cis-1,3-cyclopentane structure and the structural unit having the trans-1,3-cyclopentane structure is 0.5% or more and 30% or less. When the proportion of the trans structural unit (II) in the total of the cis structural unit (I) and the structural unit having the trans-1,3-cyclopentane structure represented by the above formula (II) (hereinafter, sometimes referred to as "trans structural unit (II)") (hereinafter, this proportion may be referred to as "isomerization rate") is within the above-mentioned range, the heat sealability of the molded article can be further improved. In the present invention, the proportion (isomerization rate) of the trans structural unit (II) in the total of the cis structural unit (I) and the trans structural unit (II) is １３ The isomerization rate can be determined by C-NMR measurement. More specifically, the isomerization rate can be determined by the method described in the Examples section of this specification.

[0013] [5] The resin composition according to any one of [1] to [4] above, wherein the weight-average molecular weight of the hydrogenated norbornene ring-opening polymer is 60,000 or more and 200,000 or less. When the weight-average molecular weight of the hydrogenated norbornene ring-opening polymer is within the above-mentioned range, the heat-sealability of the molded article can be further improved. Furthermore, excessive increases in the viscosity of the resin composition can be suppressed, ensuring sufficient processability of the resin composition. In the present invention, the "weight-average molecular weight" is a value measured by gel permeation chromatography (GPC), and specifically, can be measured using the method described in the examples of this specification.

[0014] [6] The resin composition according to any one of [1] to [5] above, wherein the melting point of the hydrogenated norbornene ring-opening polymer is 110°C or higher and 150°C or lower. When the melting point of the hydrogenated norbornene ring-opening polymer is within the above-mentioned range, the heat sealability of the molded article can be further improved. Furthermore, the heat resistance of the hydrogenated norbornene ring-opening polymer can be sufficiently ensured. In the present invention, the "melting point" can be measured using a differential scanning calorimeter, for example, using the method described in the examples of this specification.

[0015] [7] A molded article formed using the resin composition according to any one of [1] to [6] above. The molded article formed by molding the resin composition has excellent solvent resistance and heat sealability.

[0016] [8] A method for producing the resin composition according to any one of [1] to [6] above, comprising the step of kneading the hydrogenated norbornene ring-opening polymer and the cyclic olefin polymer to obtain the resin composition. Through the steps described above, it is possible to satisfactorily produce the resin composition of the present invention, which can provide a molded article exhibiting excellent solvent resistance and heat sealability.

[0017] According to the present invention, it is possible to provide a resin composition capable of forming a molded article having excellent solvent resistance and heat sealability, and a method for producing the same. Furthermore, according to the present invention, it is possible to provide a molded article having excellent solvent resistance and heat sealability.

[0018] Hereinafter, embodiments of the present invention will be described in detail. The resin composition of the present invention can be used in various fields as a resin material for constituting various molded articles (particularly films, sheets, and bioreactor bags). The resin composition of the present invention can be produced using the method for producing a resin composition of the present invention. Furthermore, the molded article of the present invention can be obtained by molding the resin composition of the present invention.

[0019] (Resin Composition) The resin composition of the present invention comprises a norbornene-based ring-opening polymer hydrogenated salt and a cyclic olefin polymer, and may optionally further comprise components other than the norbornene-based ring-opening polymer hydrogenated salt and the cyclic olefin polymer (other components). The resin composition of the present invention is characterized in that the norbornene-based ring-opening polymer hydrogenated salt is crystalline, the cyclic olefin polymer is amorphous, the mass ratio of the norbornene-based ring-opening polymer hydrogenated salt to the cyclic olefin polymer is 75 / 25 or more and 95 / 5 or less, and the proportion of meso-dyads in the norbornene-based ring-opening polymer hydrogenated salt is less than 30%.

[0020] <Hydrogenated norbornene ring-opening polymer> The hydrogenated norbornene ring-opening polymer is a hydrogenated norbornene ring-opening polymer containing structural units derived from norbornene. The hydrogenated norbornene ring-opening polymer must be crystalline. The norbornene-derived structural units include at least a cis structural unit (I) represented by the following formula (I), which is obtained by hydrogenating a norbornene unit, and optionally a trans structural unit (II) represented by the following formula (II).

[0021] <<Structural Units>> As described above, the hydrogenated norbornene ring-opening polymer contains at least a structural unit derived from norbornene, and may optionally contain a structural unit derived from a monomer other than norbornene (another monomer).

[0022] [Norbornene-derived structural units] The norbornene-based hydrogenated ring-opening polymer preferably contains norbornene-derived structural units in an amount of 90% by mass or more, more preferably 93% by mass or more, even more preferably 96% by mass or more, and particularly preferably 99% by mass or more, of which the total structural units are 100% by mass. When the proportion of norbornene-derived structural units in the total structural units of the norbornene-based hydrogenated ring-opening polymer is 90% by mass or more, heat resistance can be improved. Furthermore, from the viewpoint of obtaining a crystalline norbornene-based hydrogenated ring-opening polymer, the proportion of norbornene-derived structural units in the total structural units of the norbornene-based hydrogenated ring-opening polymer is preferably 90% by mass or more. The upper limit of the proportion of norbornene-derived structural units in the total structural units of the norbornene-based hydrogenated ring-opening polymer is not particularly limited, and can be 100% by mass or less.

[0023] [Other structural units] Other monomers that can be used to prepare hydrogenated norbornene ring-opening polymers are not particularly limited as long as they are capable of ring-opening copolymerization with norbornene. Examples of other monomers include monomers other than norbornene that have a norbornene skeleton (hereinafter referred to as "norbornene monomers"). Note that these other monomers may be used alone or in combination of two or more.

[0024] Here, examples of the norbornene-based monomer include norbornene-based monomers that do not have a ring fused with a norbornene ring (non-fused ring-forming norbornene-based monomers) and norbornene-based monomers that have a ring fused with a norbornene ring (fused ring-forming norbornene-based monomers).

[0025] -Non-condensed ring norbornene-based monomer- Examples of the non-condensed ring norbornene-based monomer include norbornenes having an alkyl group such as 5-methylnorbornene, 5-ethylnorbornene, 5-butylnorbornene, 5-hexylnorbornene, 5-decylnorbornene, 5-cyclohexylnorbornene, and 5-cyclopentylnorbornene; norbornenes having an alkenyl group such as 5-ethylidenenorbornene, 5-vinylnorbornene, 5-propenylnorbornene, 5-cyclohexenylnorbornene, and 5-cyclopentenylnorbornene; norbornenes having an aromatic ring such as 5-phenylnorbornene; 5-methoxycarbonylnorbornene, 5-ethoxycarbonylnorbornene, and 5-ethoxycarbonylnorbornene. norbornene having a polar group containing an oxygen atom, such as norbornene, 5-methyl-5-methoxycarbonylnorbornene, 5-methyl-5-ethoxycarbonylnorbornene, norbornenyl-2-methylpropionate, norbornenyl-2-methyloctanate, 5-hydroxymethylnorbornene, 5,6-di(hydroxymethyl)norbornene, 5,5-di(hydroxymethyl)norbornene, 5-hydroxyisopropylnorbornene, 5,6-dicarboxynorbornene, and 5-methoxycarbonyl-6-carboxynorbornene; and norbornenes having a polar group containing a nitrogen atom, such as 5-cyanonorbornene. These may be used alone or in combination of two or more.

[0026] -Fused Ring-Forming Norbornene-Based Monomer- Examples of the fused ring-forming norbornene-based monomer include monomers represented by the following formulae (III) and (IV).

[0027]

[0028] In the above formula (III), R １ and R ２ R each independently represent a hydrogen atom, a halogen atom, a hydrocarbon group having from 1 to 20 carbon atoms which may have a substituent, or a substituent containing a silicon atom, an oxygen atom, or a nitrogen atom (excluding those which fall under the category of hydrocarbon groups having from 1 to 20 carbon atoms which may have a substituent), and may be bonded to each other to form a ring. ３represents a divalent hydrocarbon group having 1 to 20 carbon atoms which may have a substituent.

[0029]

[0030] In the above formula (IV), R ４ , R ５ , R ６ , R ７ each independently represents a hydrogen atom, a halogen atom, a hydrocarbon group having from 1 to 20 carbon atoms which may have a substituent, or a substituent containing a silicon atom, an oxygen atom, or a nitrogen atom (excluding those which fall under the category of hydrocarbon groups having from 1 to 20 carbon atoms which may have a substituent), R ４ and R ６ may be bonded to each other to form a ring. m is 1 or 2.

[0031] Examples of the monomer represented by the formula (III) include dicyclopentadiene, methyldicyclopentadiene, dimethyldicyclopentadiene, tricyclo[5.2.1.0] ２，６ ]dec-8-ene, tetracyclo[9.2.1.0 ２，１０ .0 ３，８ ]tetradeca-3,5,7,12-tetraene (also known as 1,4-methano-1,4,4a,9a-tetrahydro-9H-fluorene), tetracyclo[10.2.1.0 ２，１１ .0 ４，９ ]pentadeca-4,6,8,13-tetraene (also called 1,4-methano-1,4,4a,9,9a,10-hexahydroanthracene). These may be used alone or in combination of two or more.

[0032] Examples of the monomer represented by the above formula (IV) include tetracyclododecenes in which m is 1 and hexacycloheptadecenes in which m is 2.

[0033] Examples of tetracyclododecenes (m=1) include tetracyclododecene; tetracyclododecenes having an alkyl group such as 8-methyltetracyclododecene, 8-ethyltetracyclododecene, 8-cyclohexyltetracyclododecene, and 8-cyclopentyltetracyclododecene; tetracyclododecenes having an exocyclic double bond such as 8-methylidenetetracyclododecene, 8-ethylidenetetracyclododecene, 8-vinyltetracyclododecene, 8-propenyltetracyclododecene, 8-cyclohexenyltetracyclododecene, and 8-cyclopentenyltetracyclododecene; tetracyclododecenes having an aromatic ring such as 8-phenyltetracyclododecene; 8-methoxycarbonyltetracyclododecene; Examples of the tetracyclododecene include tetracyclododecenes having a substituent containing an oxygen atom, such as tetracyclododecene, 8-methyl-8-methoxycarbonyltetracyclododecene, 8-hydroxymethyltetracyclododecene, 8-carboxytetracyclododecene, tetracyclododecene-8,9-dicarboxylic acid, and tetracyclododecene-8,9-dicarboxylic anhydride; tetracyclododecenes having a substituent containing a nitrogen atom, such as 8-cyanotetracyclododecene and tetracyclododecene-8,9-dicarboxylic imide; tetracyclododecenes having a substituent containing a halogen atom, such as 8-chlorotetracyclododecene; and tetracyclododecenes having a substituent containing a silicon atom, such as 8-trimethoxysilyltetracyclododecene. These may be used alone or in combination of two or more.

[0034] Examples of hexacycloheptadecenes (m=2) include hexacycloheptadecene; hexacycloheptadecenes having an alkyl group such as 12-methylhexacycloheptadecene, 12-ethylhexacycloheptadecene, 12-cyclohexylhexacycloheptadecene, and 12-cyclopentylhexacycloheptadecene; 12-methylidenehexacycloheptadecene; 12-ethylidenehexacycloheptadecene; Hexacycloheptadecenes having a double bond outside the ring, such as 12-hexacycloheptadecene, 12-vinylhexacycloheptadecene, 12-propenylhexacycloheptadecene, 12-cyclohexenylhexacycloheptadecene, and 12-cyclopentenylhexacycloheptadecene; hexacycloheptadecenes having an aromatic ring, such as 12-phenylhexacycloheptadecene; 12-methoxycarbonylhexacycloheptadecene, 12-methylhexacycloheptadecene, and 12-methylhexacycloheptadecene; Hexacycloheptadecenes having a substituent containing an oxygen atom, such as 12-methyl-12-methoxycarbonylhexacycloheptadecene, 12-hydroxymethylhexacycloheptadecene, 12-carboxyhexacycloheptadecene, hexacycloheptadecene-12,13-dicarboxylic acid, and hexacycloheptadecene-12,13-dicarboxylic acid anhydride; hexacycloheptadecenes having a substituent containing a nitrogen atom (excluding those containing an oxygen atom), such as 12-cyanohexacycloheptadecene and hexacycloheptadecene-12,13-dicarboxylic acid imide; hexacycloheptadecenes having a substituent containing a halogen atom, such as 12-chlorohexacycloheptadecene; and hexacycloheptadecenes having a substituent containing a silicon atom (excluding those containing an oxygen atom), such as 12-trimethoxysilylhexacycloheptadecene.

[0035] Among these, dicyclopentadiene is preferred. That is, when the hydrogenated ring-opening polymer of the present invention contains structural units derived from other monomers, the structural units derived from the other monomers are preferably structural units derived from dicyclopentadiene.

[0036] <<Properties>> [Proportion of meso-dyads] The hydrogenated norbornene ring-opening polymer must have a meso-dyad ratio of the cis structural unit (I) contained in the norbornene-derived structural unit of less than 30%. If the proportion of meso-dyads of the cis structural unit (I) is 30% or more, the stereoregularity of the molecular chain portion formed by the cis structural unit (I) in the hydrogenated norbornene ring-opening polymer is reduced (i.e., the molecular chain portion formed by the cis structural unit (I) has an atactic structure). It is presumed that this reduction in stereoregularity is involved, and if the proportion of meso-dyads of the cis structural unit (I) is 30% or more, the heat-sealing property of the resin composition is reduced. On the other hand, if the proportion of meso-dyads of the cis structural unit (I) is less than 30% (i.e., the molecular chain portion formed by the cis structural unit (I) has a syndiotactic structure), the resin composition can have excellent heat-sealing properties. The ratio of meso-dyads of the cis structural unit (I) can be, for example, 0% or more, 10% or more, 15% or more, or 20% or more, and 29% or less, 28% or less, or 27% or less. The ratio of meso-dyads of the cis structural unit (I) in the hydrogenated norbornene ring-opening polymer can be adjusted by changing the method for producing the hydrogenated norbornene ring-opening polymer. For example, it can be adjusted by changing the type of ring-opening polymerization catalyst used when preparing the norbornene ring-opening polymer, which is a precursor of the hydrogenated norbornene ring-opening polymer.

[0037] [Isomerization Rate] The hydrogenated norbornene ring-opening polymer preferably has an isomerization rate (the ratio of trans structural units (II) to the total of cis structural units (I) and trans structural units (II) of 0.5% or more, more preferably 2% or more, even more preferably more than 5%, and preferably 30% or less, more preferably 25% or less, even more preferably 23% or less, and particularly preferably 20% or less. When the isomerization rate is within the above-mentioned range, the heat sealability of the resin composition can be further improved. The isomerization rate of the hydrogenated norbornene ring-opening polymer can be adjusted by changing the method for producing the hydrogenated norbornene ring-opening polymer. For example, the isomerization rate can be adjusted by changing the type and / or amount of the hydrogenation catalyst used when subjecting the precursor norbornene ring-opening polymer to a hydrogenation reaction for hydrogenation.

[0038] [Weight-Average Molecular Weight] The weight-average molecular weight of the norbornene-based ring-opening polymer hydrogenated product is preferably 60,000 or more, more preferably 65,000 or more, even more preferably 70,000 or more, and preferably 200,000 or less, more preferably 150,000 or less, even more preferably 90,000 or less, and particularly preferably 80,000 or less. When the weight-average molecular weight of the norbornene-based ring-opening polymer hydrogenated product is 60,000 or more, the heat-sealability of the resin composition can be further improved. On the other hand, when the weight-average molecular weight of the norbornene-based ring-opening polymer hydrogenated product is 200,000 or less, the viscosity of the resin composition can be prevented from excessively increasing, thereby ensuring sufficient processability of the resin composition. The weight-average molecular weight of the norbornene-based ring-opening polymer hydrogenated product can be adjusted by changing the production method of the norbornene-based ring-opening polymer hydrogenated product. For example, it can be adjusted by changing the type and / or amount of a ring-opening polymerization catalyst, a molecular weight modifier, etc., used when preparing a norbornene ring-opening polymer, which is a precursor of the hydrogenated norbornene ring-opening polymer.

[0039] [Melting Point] The norbornene-based ring-opening polymer must be crystalline. That is, when the norbornene-based ring-opening polymer is subjected to differential scanning calorimetry (DSC), the melting point must be observable by optimizing the measurement conditions. The melting point of the norbornene-based ring-opening polymer is preferably 110°C or higher, more preferably 120°C or higher, and even more preferably 130°C or higher, and preferably 150°C or lower, and more preferably 140°C or lower. If the melting point of the norbornene-based ring-opening polymer is 110°C or higher, the heat resistance of the norbornene-based ring-opening polymer can be sufficiently ensured. On the other hand, if the melting point of the norbornene-based ring-opening polymer is 150°C or lower, the heat sealability of the molded article can be further improved. The melting point of the norbornene-based ring-opening polymer can be adjusted by changing the production method of the norbornene-based ring-opening polymer. For example, it can be adjusted by changing the type and / or amount of a monomer having a norbornene skeleton other than norbornene when preparing a norbornene ring-opening polymer, which is a precursor of a hydrogenated norbornene ring-opening polymer.

[0040] [Hydrogenation Rate] The hydrogenation rate of the hydrogenated norbornene ring-opening polymer (the proportion of hydrogenated carbon-carbon double bonds in the precursor norbornene ring-opening polymer) is usually 90% or more, preferably 95% or more, and more preferably 99% or more. In the present invention, the hydrogenation rate of the hydrogenated norbornene ring-opening polymer is １ The hydrogenation rate of the hydrogenated norbornene ring-opening polymer can be adjusted by, for example, changing the conditions of the hydrogenation reaction.

[0041] <<Method for Preparing Hydrogenated Norbornene Ring-Opening Polymer>> The hydrogenated norbornene ring-opening polymer can be prepared by ring-opening polymerizing a monomer composition containing norbornene and subjecting the resulting norbornene ring-opening polymer to a hydrogenation reaction. After the hydrogenation reaction, post-treatment may be carried out, if necessary.

[0042] <<Ring-Opening Polymerization>> The ring-opening polymerization of a monomer composition containing norbornene can be carried out using a ring-opening polymerization catalyst. During the ring-opening polymerization, a polymerization aid such as a molecular weight modifier may be added to the polymerization system. Furthermore, the ring-opening polymerization may be carried out in the absence of a solvent or in the presence of a solvent.

[0043] [Ring-Opening Polymerization Catalyst] The ring-opening polymerization catalyst is not particularly limited as long as it is capable of ring-opening polymerizing a monomer composition containing norbornene and capable of obtaining a norbornene-based ring-opening polymer that can be used as a precursor of a norbornene-based ring-opening polymer hydride having predetermined properties. However, from the viewpoint of efficiently obtaining a norbornene-based ring-opening polymer hydride having a meso-dyad ratio of less than a predetermined value, the ring-opening polymerization catalyst used for preparing the norbornene-based ring-opening polymer is preferably a ring-opening polymerization catalyst that can impart stereoregularity to the norbornene-based ring-opening polymer. Thus, examples of ring-opening polymerization catalysts capable of imparting stereoregularity to norbornene-based ring-opening polymers include complex catalysts containing a transition metal of Group 6 of the periodic table (for example, those described in JP-A-2007-137935, JP-A-2002-249553, WO 2015 / 127192, and Macromolecules, 2015, 48 (8), pp. 2480-2492).

[0044] —Complex Catalyst Containing a Transition Metal of Group 6 of the Periodic Table— Examples of the transition metal of Group 6 of the periodic table contained in the complex catalyst (as a central atom) include chromium, tungsten, and molybdenum, with tungsten and molybdenum being preferred.

[0045] More specifically, examples of the complex catalyst containing a transition metal of Group 6 of the periodic table include tungsten(ethylimide)(tetrachloride)(diethyl ether), tungsten(ethylimide)(t-butoxide)(trichloride), tungsten(ethylimide)[di(t-butoxide)](dichloride), tungsten(ethylimide)[tri(t-butoxide)](chloride), tungsten(ethylimide)[tetra(t-butoxide)], tungsten(ethylimide)(phenoxide)(tetrachloride)(diethyl ether), tungsten(n-butylimide)(tetrachloride)(tetrahydrofuran), tungsten(n-hexylimide)(tetrachloride)(diethyl ether ...phenoxide)(tetrachloride)(tetrahydrofuran), tungsten(n-hexylimide)(tetrachloride)(diethyl ether), tungsten(n-hexylimide)(tetrachloride)(diethyl ether), tungsten(n-hexylimide)(tetrachloride)(diethyl ether), tungsten(n-hexylimide)(n-hexylimide)(tetrachloride)(diethyl ether), tungsten(n-hexylimide)(n-hexylimide)(n-hexylimide)(n-hexylimide)(n-hexylimide)(n-hexylimide)(n-hexylimide)(n-hexylimide)(n-hexylimide)(n-hexylimide) Examples of tungsten(i-propylimide)(tetrachloride)(diethyl ether), tungsten(cyclohexylimide)(tetrachloride)(diethyl ether), tungsten(adamantylimide)(tetrachloride)(diethyl ether), tungsten(benzylimide)(tetrachloride)(diethyl ether), tungsten(phenylimide)(tetrachloride)(diethyl ether), tungsten(phenylimide)(tetrachloride)(tetrahydrofuran), tungsten(2,6-dimethylphenylimide)(tetrachloride)(diethyl ether), and tungsten[2,6-di(i-propyl)(phenylimide)](tetrachloride)(diethyl ether).

[0046] Furthermore, examples of complex catalysts containing a transition metal of Group 6 of the periodic table include bis{3,3'-di(t-butyl)-5,5',6,6'-tetramethyl-2,2'-biphenoxy}oxymolybdenum(VI), bis{3,3',5,5'-tetramethyl-2,2'-biphenoxy}oxymolybdenum(VI), and {3,3'-di(t-butyl)-5,5',6,6'-tetramethyl-2,2'-biphenoxy}oxymolybdenum(VI). dichloride, bis{3,3'-diphenyl-1,1'-binaphthyl-2,2'-dioxy}oxymolybdenum(VI), {3,3'-diphenyl-1,1'-binaphthyl-2,2'-dioxy}oxymolybdenum(VI) dichloride, bis{3,3'-di(t-butyl)-5,5',6,6'-tetramethyl-2,2'-biphenoxy}oxytungsten(VI), {3,3'-di(t-butyl)-5,5',6, 6'-tetramethyl-2,2'-biphenoxy}oxytungsten(VI) dichloride, bis{3,3'-diphenyl-1,1'-binaphthyl-2,2'-dioxy}oxytungsten(VI), {3,3'-diphenyl-1,1'-binaphthyl-2,2'-dioxy}oxytungsten(VI) dichloride, bis{3,3'-di(t-butyl)-5,5',6,6'-tetramethyl-2,2'-biphenoxy}oxytungsten(VI) {3,3'-di(t-butyl)-5,5',6,6'-tetramethyl-2,2'-biphenoxy}tungsten(VI) tetrachloride, bis{3,3'-diphenyl-1,1'-binaphthyl-2,2'-dioxy}tungsten(VI) dichloride, and {3,3'-diphenyl-1,1'-binaphthyl-2,2'-dioxy}tungsten(VI) tetrachloride.

[0047] Furthermore, examples of the complex catalyst containing a transition metal of Group 6 of the periodic table include complex catalysts represented by the following formula (V).

[0048]

[0049] The complex catalyst containing a transition metal of Group 6 of the periodic table may be used alone or in combination of two or more. As the complex catalyst containing a transition metal of Group 6 of the periodic table, tungsten(phenylimide)(tetrachloride)(tetrahydrofuran) is particularly preferred.

[0050] - Co-catalyst - Furthermore, as the ring-opening polymerization catalyst, it is preferable to use the above-mentioned complex catalyst containing a transition metal of Group 6 of the periodic table in combination with a co-catalyst other than the complex catalyst in order to enhance catalytic activity.

[0051] The cocatalyst may be a known organometallic compound, preferably an organometallic compound belonging to any one of Groups 1, 2, 12, 13, and 14 of the Periodic Table having a hydrocarbon group having from 1 to 20 carbon atoms, more preferably an organolithium compound, an organomagnesium compound, an organozinc compound, an organoaluminum compound, or an organotin compound, and particularly preferably an organoaluminum compound.

[0052] Examples of organolithium compounds include n-butyllithium, methyllithium, phenyllithium, neopentyllithium, and neophyllithium. Examples of organomagnesium compounds include butylethylmagnesium, butyloctylmagnesium, dihexylmagnesium, ethylmagnesium chloride, n-butylmagnesium chloride, allylmagnesium bromide, neopentylmagnesium chloride, and neophylmagnesium chloride. Examples of organozinc compounds include dimethylzinc, diethylzinc, and diphenylzinc. Examples of organoaluminum compounds include trimethylaluminum, triethylaluminum, triisobutylaluminum, diethylaluminum chloride, diethylaluminum ethoxide, ethylaluminum dichloride, and ethylaluminum diethoxide. Of these, diethylaluminum ethoxide is preferred. Examples of organotin compounds include tetramethyltin, tetra(n-butyl)tin, and tetraphenyltin.

[0053] The cocatalyst may be used alone or in combination of two or more kinds.

[0054] [Molecular Weight Regulator] Examples of molecular weight regulators that can be optionally used in ring-opening polymerization include vinyl compounds and diene compounds.

[0055] The vinyl compound is not particularly limited as long as it is an organic compound having a vinyl group and not corresponding to the diene compounds described below. Examples thereof include α-olefins such as 1-butene, 1-pentene, 1-hexene, 1-octene, etc.; styrenes such as styrene and vinyltoluene; ethers such as ethyl vinyl ether, i-butyl vinyl ether, allyl glycidyl ether, etc.; halogen-containing vinyl compounds such as allyl chloride; oxygen-containing vinyl compounds such as allyl acetate, allyl alcohol, glycidyl methacrylate, etc.; nitrogen-containing vinyl compounds such as acrylamide, etc.; silicon-containing vinyl compounds such as vinyltrimethylsilane, vinyltrimethoxysilane, etc. Examples of diene compounds include non-conjugated dienes such as 1,4-pentadiene, 1,4-hexadiene, 1,5-hexadiene, 1,6-heptadiene, 2-methyl-1,4-pentadiene, and 2,5-dimethyl-1,5-hexadiene; and conjugated dienes such as 1,3-butadiene, 2-methyl-1,3-butadiene, 2,3-dimethyl-1,3-butadiene, 1,3-pentadiene, and 1,3-hexadiene. The molecular weight modifier may be used alone or in combination of two or more. Furthermore, α-olefins are preferred as the molecular weight modifier, with 1-hexene being more preferred.

[0056] [Solvent] From the viewpoint of being able to well control the reaction, the ring-opening polymerization is preferably carried out in a solvent, particularly an organic solvent. The organic solvent to be used is not particularly limited as long as it can dissolve or disperse the resulting norbornene-based ring-opening polymer and is inert to the polymerization reaction. Specific examples include aliphatic hydrocarbon solvents such as pentane, hexane, and heptane; alicyclic hydrocarbon solvents such as cyclopentane, cyclohexane, methylcyclohexane, dimethylcyclohexane, trimethylcyclohexane, ethylcyclohexane, diethylcyclohexane, decahydronaphthalene, bicycloheptane, tricyclodecane, hexahydroindenecyclohexane, and cyclooctane; aromatic hydrocarbon solvents such as benzene, toluene, and xylene; halogenated aliphatic hydrocarbon solvents such as dichloromethane, chloroform, and 1,2-dichloroethane; halogenated aromatic hydrocarbon solvents such as chlorobenzene and dichlorobenzene; nitrogen-containing hydrocarbon solvents such as nitromethane, nitrobenzene, and acetonitrile; ether solvents such as diethyl ether and tetrahydrofuran; and aromatic ether solvents such as anisole and phenetole. The solvent may be used alone or in combination of two or more. The solvent is particularly preferably an aromatic hydrocarbon solvent, an aliphatic hydrocarbon solvent, an alicyclic hydrocarbon solvent, an ether solvent, or an aromatic ether solvent.

[0057] [Conditions for Ring-Opening Polymerization] The conditions for ring-opening polymerization (such as the amounts of the above-mentioned components used, the polymerization time, and the polymerization temperature) are not particularly limited and can be appropriately set depending on the desired physical properties of the norbornene ring-opening polymer and the hydrogenated norbornene ring-opening polymer.

[0058] <<Hydrogenation Reaction>> A norbornene-based ring-opening polymer obtained through the above-mentioned ring-opening polymerization can be subjected to a hydrogenation reaction to obtain a hydrogenated norbornene-based ring-opening polymer. Here, the hydrogenation reaction can be carried out, for example, by supplying hydrogen gas to a polymer solution (or polymer dispersion) containing the norbornene-based ring-opening polymer obtained after the above-mentioned ring-opening polymerization and a solvent in the presence of a hydrogenation catalyst. The solvent used in the hydrogenation reaction is not particularly limited, and for example, the solvent (particularly the organic solvent) used in the above-mentioned ring-opening polymerization can be used as is.

[0059] [Hydrogenation Catalyst] The hydrogenation catalyst is not particularly limited, and those generally used in the hydrogenation reaction of olefin compounds can be used. For example, Ziegler catalysts consisting of a combination of a transition metal compound and an alkali metal compound, such as cobalt acetate and triethylaluminum, nickel acetylacetonate and triisobutylaluminum, titanocene dichloride and n-butyllithium, zirconocene dichloride and sec-butyllithium, or tetrabutoxytitanate and dimethylmagnesium; dichlorotris Examples of such catalysts include homogeneous catalysts such as (triphenylphosphine)rhodium and noble metal complex catalysts comprising ruthenium compounds described in JP-A Nos. 7-2929, 7-149823, 11-209460, 11-158256, 11-193323, and 11-209460; and supported heterogeneous catalysts in which a metal such as nickel, palladium, platinum, rhodium, or ruthenium is supported on a carrier such as carbon, silica, diatomaceous earth, alumina, or titanium oxide.

[0060] The hydrogenation catalyst may be used alone or in combination of two or more. Supported heterogeneous catalysts are preferred as the hydrogenation catalyst because they can be easily removed by filtering the reaction solution after the hydrogenation reaction. Specific preferred examples of supported heterogeneous catalysts include combinations of nickel / silica, nickel / diatomaceous earth, nickel / alumina, palladium / carbon, palladium / silica, palladium / diatomaceous earth, and palladium / alumina.

[0061] [Hydrogenation Reaction Conditions] The hydrogenation reaction conditions (such as the amount of hydrogenation catalyst used, reaction time, reaction temperature, and hydrogen pressure) are not particularly limited and can be appropriately set depending on the desired physical properties (e.g., hydrogenation rate and isomerization rate) of the hydrogenated norbornene ring-opening polymer.

[0062] <<Post-treatment>> After the ring-opening polymerization and hydrogenation reaction described above, post-treatment can be performed as necessary to effectively isolate the desired hydrogenated norbornene ring-opening polymer. For example, when a heterogeneous catalyst is used, the hydrogenation reaction is filtered to remove the hydrogenation catalyst, followed by coagulation drying or direct drying using a thin-film dryer or the like. When a homogeneous catalyst is used as the hydrogenation catalyst, alcohol or water is added after the hydrogenation reaction to deactivate the catalyst, and the catalyst is insolubilized in a solvent, followed by filtration to remove the catalyst. The hydrogenated norbornene ring-opening polymer can usually be obtained in the form of a powder or pellets.

[0063] <Cyclic Olefin Polymer> The cyclic olefin polymer is not particularly limited as long as it is an amorphous polymer obtained by polymerizing a cyclic olefin.

[0064] Specifically, examples of the cyclic olefin polymer include copolymers of cyclic olefins and chain olefins, ring-opening polymers of cyclic olefins, and hydrogenated products of ring-opening polymers of cyclic olefins.

[0065] <<Copolymer of Cyclic Olefin and Chain Olefin>> A copolymer of a cyclic olefin and a chain olefin is usually a polymer obtained by addition copolymerization of a cyclic olefin and a chain olefin.

[0066] Specific examples of the cyclic olefin include norbornene and norbornene-based monomers described above in the section "Hydrogenated norbornene-based ring-opening polymer."

[0067] Specific examples of the chain olefin are not particularly limited as long as it is copolymerizable with the above-mentioned cyclic olefin, and include, for example, linear or branched olefins having 2 to 20 carbon atoms, such as ethylene, propylene, butene, pentene, hexene, butadiene, pentadiene, and hexadiene.

[0068] The method for preparing the copolymer of a cyclic olefin and a chain olefin is not particularly limited, and any of the known methods for copolymerizing the above-mentioned cyclic olefin and a chain olefin can be used.

[0069] <<Ring-opening polymer of cyclic olefin>> A ring-opening polymer of cyclic olefin is a polymer obtained by ring-opening polymerization of one or more types of cyclic olefin. As the cyclic olefin, the same cyclic olefins as those used in preparing the above-mentioned copolymer of cyclic olefin and chain olefin can be used. The method for preparing the ring-opening polymer of cyclic olefin is not particularly limited, and known methods for ring-opening polymerization of the above-mentioned cyclic olefin, such as metathesis polymerization, can be used.

[0070] <<Hydrogenated ring-opening polymer of cyclic olefin>> The hydrogenated ring-opening polymer of cyclic olefin is obtained by hydrogenating the above-mentioned ring-opening polymer of cyclic olefin. The method for hydrogenating the ring-opening polymer of cyclic olefin is not particularly limited, and any known method can be used. For example, a method may be used in which a known hydrogenation catalyst containing a transition metal such as nickel or palladium is added to a solution of the above-mentioned ring-opening polymer of cyclic olefin to hydrogenate the carbon-carbon double bonds in the ring-opening polymer.

[0071] From the viewpoint of further enhancing the solvent resistance and heat sealability of the molded article, the cyclic olefin polymer is preferably a hydrogenated product of a ring-opening polymer of a cyclic olefin, and more preferably a hydrogenated product of a ring-opening polymer containing a structural unit derived from norbornene and a structural unit derived from a condensed ring-forming norbornene monomer.

[0072] [Norbornene-derived structural units] The cyclic olefin polymer preferably contains norbornene-derived structural units in an amount of 50% by mass or less, more preferably 48% by mass or less, based on 100% by mass of all structural units. If the proportion of norbornene-derived structural units in all structural units of the cyclic olefin polymer is 50% by mass or less, the transparency of the molded article can be improved while further improving the heat sealability. In addition, from the viewpoint of obtaining an amorphous cyclic olefin polymer, the proportion of norbornene-derived structural units in all structural units of the cyclic olefin polymer is preferably 50% by mass or less. The lower limit of the proportion of norbornene-derived structural units in all structural units of the cyclic olefin polymer is not particularly limited, and can be, for example, 0% by mass or more, 5% by mass or more, or 10% by mass or more.

[0073] [Structural Units Derived from Condensed Ring-Forming Norbornene Monomers] Dicyclopentadiene and tetracyclododecenes are preferred as condensed ring-forming norbornene monomers because of their excellent moldability. Furthermore, the cyclic olefin polymer preferably contains more than 50% by mass, and more preferably 52% by mass or more, of structural units derived from condensed ring-forming norbornene monomers, with the total structural units being 100% by mass. If the proportion of structural units derived from condensed ring-forming norbornene monomers in the total structural units of the cyclic olefin polymer is more than 50% by mass, the transparency of the molded article can be improved while further enhancing the heat sealability. The upper limit of the proportion of structural units derived from condensed ring-forming norbornene monomers in the total structural units of the cyclic olefin polymer is not particularly limited, and can be, for example, 100% by mass or less, 95% by mass or less, or 90% by mass or less.

[0074] <<Properties>> [Glass transition temperature] The glass transition temperature of the cyclic olefin polymer is preferably 60°C or higher, more preferably 65°C or higher, and preferably 150°C or lower, more preferably 120°C or lower, even more preferably 110°C or lower, and particularly preferably 90°C or lower. If the glass transition temperature of the cyclic olefin polymer is 60°C or higher, the heat resistance of the cyclic olefin polymer can be sufficiently ensured. On the other hand, if the glass transition temperature of the cyclic olefin polymer is 150°C or lower, the heat sealability of the molded article can be further improved. The glass transition temperature of the cyclic olefin polymer can be adjusted, for example, by changing the type and amount of monomers used in preparing the cyclic olefin polymer.

[0075] [Weight-average molecular weight] The weight-average molecular weight of the cyclic olefin polymer is preferably 20,000 or more, more preferably 25,000 or more, and even more preferably 30,000 or more, and is preferably 150,000 or less, more preferably 100,000 or less, and even more preferably 60,000 or less. If the weight-average molecular weight of the cyclic olefin polymer is 20,000 or more, sufficient mechanical strength can be imparted to the molded article. Furthermore, if the weight-average molecular weight of the cyclic olefin polymer is 150,000 or less, it can be easily molded and processed.

[0076] <Other Components> The other components are not particularly limited, and examples thereof include polymers other than the above-mentioned hydrogenated norbornene ring-opening polymers and cyclic olefin polymers (such as thermoplastic elastomers), fillers, antioxidants such as tetrakis[methylene-3-(3',5'-di-tert-butyl-4'-hydroxyphenyl], mold release agents, flame retardants, antibacterial agents, wood flour, coupling agents, plasticizers, colorants, lubricants, silicone oil, foaming agents, surfactants, light stabilizers, dispersing aids, heat stabilizers, ultraviolet absorbers, antistatic agents, dispersants, chlorine scavengers, crystallization nucleating agents, antifogging agents, organic fillers, neutralizing agents, decomposing agents, metal deactivators, and antifouling agents. One type of other component may be used alone, or two or more types may be used in combination.

[0077] The mass ratio of the norbornene ring-opening polymer hydrogenated to the cyclic olefin polymer in the resin composition (norbornene ring-opening polymer hydrogenated / cyclic olefin polymer) is preferably 75 / 25 or more, more preferably 80 / 20 or more, even more preferably 85 / 15 or more, and preferably 95 / 5 or less, more preferably 90 / 10 or less. When the norbornene ring-opening polymer hydrogenated / cyclic olefin polymer ratio is 75 / 25 or more, the solvent resistance of the molded article can be further improved. On the other hand, when the norbornene ring-opening polymer hydrogenated / cyclic olefin polymer ratio is 95 / 5 or less, the heat sealability of the molded article can be further improved and the haze value of the molded article can be reduced.

[0078] (Method for producing resin composition) The method for producing a resin composition of the present invention includes at least a step (kneading step) of kneading a hydrogenated norbornene ring-opening polymer and a cyclic olefin polymer to obtain a resin composition. The method for producing a resin composition of the present invention may further include a step (other step) other than the kneading step.

[0079] <Kneading Step> In the kneading step, a norbornene-based hydrogenated ring-opening polymer and a cyclic olefin polymer are kneaded to obtain a resin composition. As the norbornene-based hydrogenated ring-opening polymer and the cyclic olefin polymer, those described above in the "Resin Composition" section are used. During kneading, other components described above in the "Resin Composition" section can also be added to the norbornene-based hydrogenated ring-opening polymer and the cyclic olefin polymer.

[0080] For the kneading, a melt kneader such as a single-screw extruder, a twin-screw extruder, a Banbury mixer, a kneader, or a feeder ruder can be used. The kneading temperature is preferably in the range of 200 to 400° C., more preferably in the range of 240 to 300° C. Furthermore, when kneading, the components may be added all at once and kneaded, or may be added in several portions and kneaded.

[0081] Examples of other steps include a step of preparing a hydrogenated norbornene ring-opening polymer prior to the kneading step (preparation step), and a step of extruding the resin composition obtained in the kneading step to form pellets (extrusion step).

[0082] As a method for preparing the hydrogenated norbornene ring-opening polymer in the preparation step, the method described above in the section "Resin composition" can be used.

[0083] (Molded Article) The molded article of the present invention is formed using the resin composition of the present invention described above. Since the molded article of the present invention is formed by molding the resin composition of the present invention, it has excellent solvent resistance and heat sealability.

[0084] The method for producing the molded article is not particularly limited. The resin composition can be molded into a molded article using, for example, a known molding method such as injection molding, compression molding, extrusion molding, blow molding, inflation molding, calendar molding, solution casting, etc. The shape of the molded article can be appropriately selected depending on the application.

[0085] The uses of the molded article of the present invention are not particularly limited, and examples thereof include optical materials such as optical disks, optical lenses, prisms, light diffusion plates, optical cards, optical fibers, optical mirrors, liquid crystal display element substrates, light guide plates, polarizing films, and retardation films; Medical equipment such as containers for liquid, powder, or solid medicines (liquid medicine containers for injection, ampoules, vials, prefilled syringes, bioreactor bags, infusion bags, inner layers, middle layers, outer layers of multilayer films, sealant films, sealed medicine bags, press-through packages, solid medicine containers, eye drop containers, etc.), sampling containers (blood test sampling test tubes, medicine container caps, blood collection tubes, specimen containers, etc.), medical instruments (syringes, etc.), sterilized containers for medical instruments (for scalpels, forceps, gauze, contact lenses, etc.), laboratory and analytical instruments (beakers, petri dishes, flasks, test tubes, centrifuge tubes, etc.), medical optical components (plastic lenses for medical tests, etc.), piping materials (medical infusion tubes, piping, joints, valves, etc.), artificial organs and their parts (tooth bases, artificial hearts, artificial tooth roots, etc.), and food containers such as bottles, returnable bottles, baby bottles, films, and shrink films. Electronic component processing equipment for processing or transport containers (tanks, trays, carriers, cases, etc.), protective materials (carrier tape, separation film, etc.), piping (pipes, tubes, valves, flow meters, filters, pumps, etc.), liquid containers (sampling containers, bottles, ampoule bags, etc.); coating materials (for electric wires, cables, etc.), consumer and industrial electronic device housings (copiers, computers, printers, televisions, VCRs, video cameras, etc.), structural members (parabolic antenna structural members, flat antenna structural members, radar dome structural members, etc.), and other electrical insulating materials; general circuit boards (rigid printed circuit boards, flexible printed circuit boards, multilayer printed wiring boards, etc.), high-frequency circuit boards (circuit boards for satellite communication equipment, etc.), and other circuit boards; substrates for transparent conductive films (liquid crystal substrates, optical memory, surface heating elements, etc.); semiconductor encapsulants (transistor encapsulants, IC encapsulants, LSI encapsulants, LED encapsulants, etc.), and encapsulants for electrical and electronic components (motor encapsulants, capacitor encapsulants, switch encapsulants, sensor encapsulants, etc.); Automotive interior materials such as rearview mirror and meter covers;Automotive exterior materials such as door mirrors, fender mirrors, beam lenses, and light covers.

[0086] The thickness of the film or sheet as the molded article of the present invention is not particularly limited, but is usually 1 μm to 20 mm, preferably 5 μm to 5 mm, and more preferably 10 μm to 2 mm.

[0087] The film and sheet as the molded article of the present invention may be a laminate having a layer containing the resin composition of the present invention and a layer containing a known polymer commonly used in home appliances, food, medical fields, etc. The number of layers to be laminated is usually two or three, but a laminate with more layers can also be used. The order of layer arrangement by polymer type in a multilayer of three or more layers can be determined depending on the purpose and application.

[0088] The present invention will be specifically described below using examples, but the present invention is not limited to these examples. In the following description, "%" and "parts" representing amounts are based on mass unless otherwise specified. In the examples and comparative examples, various measurements and evaluations were performed using the following methods.

[0089] <Copolymerization Composition Ratio of Norbornene Ring-Opening Polymer> １ Based on H-NMR measurement, the ratio of the number of hydrogen atoms derived from norbornene units to the number of hydrogen atoms derived from other monomer units was determined, and the copolymerization composition ratio of the norbornene ring-opening polymer was calculated based on this ratio. The norbornene ring-opening polymer for measurement was obtained by pouring a large amount of acetone into a polymerization reaction solution containing the norbornene ring-opening polymer, filtering the resulting aggregate, washing the filtered product with methanol, and drying under reduced pressure at 40°C for 24 hours. <Hydrogenation rate> １The weight average molecular weight was calculated based on H-NMR measurement. <Weight average molecular weight> The weight average molecular weight of the polymer was measured as a standard polystyrene equivalent value by gel permeation chromatography (GPC) using cyclohexane as an eluent. The measurement apparatus used was an HLC8121GPC / HT (manufactured by Tosoh Corporation). The sample was prepared by heating and dissolving the measurement sample in cyclohexane at 40°C to a sample concentration of 4 mg / ml. The measurement was performed using three TSKgel (registered trademark) GMHHR H(20)HT (manufactured by Tosoh Corporation) columns connected in series under the conditions of a flow rate of 1.0 ml / min, a sample injection volume of 300 μl, and a column temperature of 40°C. <Glass Transition Temperature> 10 mg of a measurement sample was weighed into an aluminum pan, and measurement was carried out using a differential scanning calorimeter (DSC; DSC7000X, manufactured by Hitachi High-Tech Science Corporation) under the conditions specified in JIS Z8703. The sample was heated from 30°C to 200°C at a rate of 10°C / min, cooled to 0°C at a cooling rate of -10°C / min, and then heated to 200°C at a rate of 10°C / min, to obtain a differential scanning calorimetry (DSC) curve. An empty aluminum pan was used as a reference. The temperature at which the differential signal (DDSC) peaked during this heating process was determined as the glass transition temperature (°C). When multiple peaks were measured, the temperature showing the peak with the largest displacement was determined as the glass transition temperature of the cyclic olefin polymer. <Melting Point> The melting point of the hydrogenated norbornene ring-opening polymer was measured using a differential scanning calorimeter (DSC; DSC7000X, manufactured by Hitachi High-Tech Science Corporation) regardless of whether the resin had a thermal history, by heating from 30°C to 200°C at a rate of 10°C / min, then cooling to 0°C at a cooling rate of -10°C / min, and then heating to 200°C at a rate of 10°C / min, and the temperature point at which the endothermic heat was greatest at the peak of the first-order phase transition of crystalline melting was taken as the melting point. <Proportion of meso-dyads of cis structural units (I)> The proportion of meso-dyads of cis structural units (I) of the hydrogenated norbornene ring-opening polymer is １３The ratio was calculated by C-NMR measurement (solvent: deuterated chloroform, measurement temperature: 60°C). Specifically, in the obtained NMR spectrum, the signal intensity of the meso-dyad observed at 31.712 ppm was divided by the sum of the signal intensity of the racemo-dyad observed at 31.724 ppm and the signal intensity of the meso-dyad observed at 31.712 ppm, and the result was multiplied by 100 to calculate the proportion (percentage) of the meso-dyad. Note that when the solubility of the norbornene-based ring-opening polymer hydrogenated product in the solvent is low and it is necessary to dissolve it at a high temperature, the solvent was deuterated tetrachloroethane and the measurement temperature was 125°C. １３ It was calculated by C-NMR measurement. Specifically, in such a case, the signal intensity of the meso-dyad observed at 40.315 ppm in the obtained NMR spectrum was divided by the sum of the signal intensity of the racemo-dyad observed at 40.310 ppm and the signal intensity of the meso-dyad observed at 40.315 ppm, and the result was multiplied by 100 to calculate the proportion (percentage) of the meso-dyad. １３ The chemical shift of each signal in C-NMR varies slightly depending on the measurement environment and analysis process. <Isomerization rate> The isomerization rate of the hydrogenated norbornene ring-opening polymer is １３ The isomerization rate (percentage) was calculated by C-NMR measurement (solvent: deuterated chloroform, measurement temperature: 60°C). Specifically, the signal intensity of the trans structural unit (II) observed at 32.96 to 33.01 ppm in the obtained NMR spectrum was divided by the sum of the signal intensity of the cis structural unit (I) observed at 31.70 to 31.73 ppm and the signal intensity of the trans structural unit (II) observed at 32.96 to 33.01 ppm, and the result was multiplied by 100. When the solubility of the norbornene-based ring-opening polymer hydrogenated product in the solvent was low and it was necessary to dissolve it at a high temperature, the solvent was deuterated tetrachloroethane and the measurement temperature was 125°C. １３The isomerization rate (percentage) was calculated by C-NMR measurement. Specifically, in the obtained NMR spectrum, the signal intensity of the trans structural unit (II) observed at 32.72 ppm was divided by the sum of the signal intensity of the cis structural unit (I) observed at 31.66 ppm and the signal intensity of the trans structural unit (II) observed at 32.72 ppm, and then multiplied by 100 to calculate the isomerization rate (percentage). <Heat sealability> Test pieces 15 mm wide and 100 mm long were cut out from the monolayer films used as molded articles prepared in the Examples and Comparative Examples, and the seal strength (N / 15 mm) of the heat-sealed portion was measured at a pulling rate of 100 mm / min and a width of 15 mm in accordance with JIS Z 0238. The heat seal conditions were heating and pressurization at a temperature of 150°C and a pressure of 0.3 MPa for 2 seconds. A higher seal strength value indicates better heat sealability. <Solvent Resistance> A solvent resistance test was conducted on the monolayer films used as molded articles produced in the Examples and Comparative Examples. Specifically, the monolayer films were cut into pieces measuring 0.50 cm x 2.00 cm, immersed in vials (5 mL capacity) containing 4 mL of each solvent (n-hexane, xylene, or methanol), and left to stand at 23°C for 7 days. After the monolayer films were removed and the solvent on the surface was wiped off, the length of the film in the longitudinal direction was measured with calipers, and this was designated L1 (cm). The dimensional change was calculated using the formula: Dimensional Change (%) = {(2.00 - L1) / 2.00} x 100, and evaluated according to the following criteria. A: Dimensional change is less than 5.0% B: Dimensional change is 5.0% or more but less than 10.0% C: Dimensional change is 10.0% or more or the monolayer film after immersion does not maintain its shape before immersion <Haze> The haze (%) of the monolayer films as molded articles produced in the examples and comparative examples was measured using a haze meter (NDH2000, manufactured by Nippon Denshoku Industries Co., Ltd.).

[0090] Production Example 1 A dried and nitrogen-purged polymerization reactor was charged with 7 parts (1% based on the total amount of monomers used in polymerization) of a monomer mixture of norbornene (hereinafter referred to as "NB"), dicyclopentadiene (hereinafter referred to as "DCPD"), and tetracyclododecene (hereinafter referred to as "TCD") (NB / DCPD / TCD = 18 / 31 / 51 (weight ratio)), 1,600 parts of dehydrated cyclohexane, 3.5 parts of 1-hexene as a molecular weight modifier, 1.3 parts of diisopropyl ether, 0.33 parts of isobutyl alcohol, 0.84 parts of triisobutylaluminum, and 30 parts of a 0.66% cyclohexane solution of tungsten hexachloride, and the mixture was stirred at 55°C for 10 minutes. Next, while maintaining the reaction system at 55 ° C. and stirring, 693 parts of the monomer mixture and 72 parts of a 0.77% tungsten hexachloride cyclohexane solution were continuously added dropwise to the polymerization reactor over 150 minutes, and after the completion of the dropwise addition, the mixture was stirred for 30 minutes, and then 1.0 parts of isopropyl alcohol was added to terminate the polymerization reaction. When the polymerization reaction solution was measured by gas chromatography, the conversion rate of the monomer to polymer was 100%. Next, 300 parts of the polymerization reaction solution containing the polymer was transferred to an autoclave equipped with a stirrer, and 100 parts of cyclohexane and 2.0 parts of a diatomaceous earth-supported nickel catalyst (manufactured by JGC Chemical Industries, Ltd.; "T8400RL", nickel loading rate 58%) were added. After replacing the atmosphere in the autoclave with hydrogen, the reaction was carried out for 6 hours at 180 ° C. under a hydrogen pressure of 4.5 MPa. This solution was filtered through a filter equipped with a stainless steel wire mesh using diatomaceous earth (manufactured by Showa Chemical Industry Co., Ltd.; Radiolite #500) as a filter aid, and the catalyst was removed. The resulting reaction solution was poured into 8,000 parts of isopropyl alcohol with stirring to precipitate the hydride, which was then filtered off. ３ The mixture was dried in a vacuum dryer set at 100°C under a pressure of 1 Pa or less for 24 hours to obtain a cyclic olefin polymer X. The obtained cyclic olefin polymer X had a hydrogenation rate of 99.9%, a weight average molecular weight (Mw) of 41,100, and a glass transition temperature (Tg) of 100°C, and no melting point was observed (i.e., the cyclic olefin polymer X was amorphous).

[0091] Production Example 2 Cyclic olefin polymer Y was obtained in the same manner as in Production Example 1, except that the weight ratio of the monomer mixture was changed to NB / TCD = 46 / 54. The hydrogenation rate of the obtained cyclic olefin polymer Y was 99.9%, the weight average molecular weight (Mw) was 38,500, the glass transition temperature (Tg) was 68°C, and no melting point was observed (i.e., the cyclic olefin polymer Y was amorphous).

[0092] Production Example 3 A cyclic olefin polymer Z was obtained in the same manner as in Production Example 1, except that the weight ratio of the monomer mixture was changed to DCPD / TCD = 35 / 65. The resulting cyclic olefin polymer Z had a hydrogenation rate of 99.9%, a weight average molecular weight (Mw) of 37,800, a glass transition temperature (Tg) of 136°C, and no melting point was observed (i.e., the cyclic olefin polymer Z was amorphous).

[0093] Example 1 Preparation of Resin Composition Preparation of Norbornene-Based Ring-Opening Polymer Hydrogenate A 0.15 parts of tungsten(phenylimide)(tetrachloride)(tetrahydrofuran) and 7.42 parts of toluene were placed in reactor A and stirred. Next, 458 parts of cyclohexane, 0.24 parts of 1-hexene, and a solution of 0.12 parts of diethylaluminum ethoxide dissolved in 0.53 parts of n-hexane were added to another reactor B. Next, the toluene solution of tungsten(phenylimide)(tetrachloride)(tetrahydrofuran) in reactor A and a solution of 100 parts of norbornene dissolved in 100 parts of toluene were added to reactor B over 2.5 hours, and a polymerization reaction was carried out at 45°C for 2.5 hours to obtain a polymerization reaction solution containing a norbornene-based ring-opening polymer. After the polymerization reaction began, the viscosity of the mixture gradually increased. The polymerization reaction solution obtained above (containing 100 parts of norbornene-based ring-opening polymer) was transferred to an autoclave equipped with a stirrer without precipitation, and 333 parts of cyclohexane and 3 parts of a diatomaceous earth-supported nickel catalyst (manufactured by JGC Chemical Industries, Ltd.; "T8400RL", nickel loading 58 wt%, manufactured by Süd-Chemie Catalysts) were added thereto, followed by reaction at 200°C and a hydrogen pressure of 4.5 MPa for 6 hours. This solution was filtered using a filter equipped with a stainless steel wire mesh using 2 parts of separately added diatomaceous earth as a filter aid, and the resulting reaction solution was filtered to obtain a 0.13 x 10３ The mixture was dried for 48 hours in a vacuum dryer set at 100°C and 100 Pa or less, yielding 100 parts of a norbornene-based ring-opening polymer hydrogenated product A. The hydrogenation rate, weight-average molecular weight, melting point, meso-dyad ratio, and isomerization rate of this norbornene-based ring-opening polymer hydrogenated product A were measured. The results are shown in Table 1. The norbornene-based ring-opening polymer hydrogenated product A was crystalline in accordance with the definition of the present invention. 0.4 parts of an antioxidant (tetrakis[methylene-3-(3',5'-di-tert-butyl-4'-hydroxyphenyl)propionate]methane, Irganox 1010, manufactured by BASF) was added to 100 parts of the norbornene-based ring-opening polymer hydrogenated product A obtained above, and the mixture was kneaded in a twin-screw kneader (TEM-35B, manufactured by Toshiba Machine Co., Ltd.) and pelletized. [Kneading and Extrusion] 90 parts of pellets of the hydrogenated norbornene ring-opening polymer A obtained above and 10 parts of the cyclic olefin polymer X obtained in Production Example 1 were mixed and kneaded using a twin-screw kneader (TEM-35B, manufactured by Toshiba Machine Co., Ltd.) under the following kneading conditions, followed by extrusion and pelletization. Screw diameter: 37 mm (L / D = 32) Screw rotation speed: 175 rpm Resin temperature: 240°C Feed rate: 10 kg / hr <Preparation of Molded Product> The pellets of the resin composition obtained above were T-die molded using a hanger manifold-type T-die film melt extrusion molding machine equipped with a single-screw extruder equipped with a screw having a screw diameter of 20 mm and a compression ratio of 2.5 (L / D = 30) under the following molding conditions to obtain a monolayer film (thickness 100 μm) as a molded product. The heat sealability, solvent resistance, and haze of this monolayer film were evaluated. The results are shown in Table 1. Die lip: 0.8 mm Molten resin temperature: 220°C T-die width: 300 mm Chill roll: 60°C Cast roll: 60°C Film take-up speed: 0.9 m / min

[0094] Example 2 A molded article was produced in the same manner as in Example 1, except that a resin composition prepared as follows was used. Evaluations were then performed in the same manner as in Example 1. The results are shown in Table 1. <Preparation of Resin Composition> [Preparation of Norbornene-Based Ring-Opening Polymer Hydrogenate B] A norbornene-based ring-opening polymer hydrogenate (norbornene-based ring-opening polymer hydrogenate B) was prepared and pelletized in the same manner as in Example 1, except that the amount of diatomaceous earth-supported nickel catalyst used was changed from 3 parts to 5 parts. The norbornene-based ring-opening polymer hydrogenate B was crystalline as defined in the present invention. [Kneading and Extrusion] 95 parts of the pellets of norbornene-based ring-opening polymer hydrogenate B obtained as described above and 5 parts of cyclic olefin polymer X were mixed, and the mixture was kneaded and extruded in the same manner as in Example 1 to obtain a pelletized resin composition.

[0095] (Example 3) A resin composition and a molded article were prepared or fabricated in the same manner as in Example 2, except that the amount of hydrogenated norbornene ring-opening polymer B used was changed from 95 parts to 85 parts and the amount of cyclic olefin polymer X used was changed from 5 parts to 15 parts during the preparation of the resin composition. Evaluations were then performed in the same manner as in Example 1. The results are shown in Table 1.

[0096] Example 4 A resin composition and a molded body were prepared or fabricated in the same manner as in Example 2, except that the cyclic olefin polymer Y obtained in Production Example 2 was used instead of the cyclic olefin polymer X as the cyclic olefin polymer when preparing the resin composition.

[0097] Example 5 A resin composition and a molded article were prepared or fabricated in the same manner as in Example 4, except that the amount of hydrogenated norbornene ring-opening polymer B used was changed from 95 parts to 90 parts and the amount of cyclic olefin polymer Y used was changed from 5 parts to 10 parts when preparing the resin composition. Evaluations were then performed in the same manner as in Example 1. The results are shown in Table 1.

[0098] Example 6 A resin composition and a molded article were prepared or fabricated in the same manner as in Example 4, except that the amount of hydrogenated norbornene ring-opening polymer B used was changed from 95 parts to 85 parts and the amount of cyclic olefin polymer Y used was changed from 5 parts to 15 parts during the preparation of the resin composition. Evaluations were then performed in the same manner as in Example 1. The results are shown in Table 1.

[0099] Example 7 A resin composition and a molded article were prepared or fabricated in the same manner as in Example 4, except that the amount of hydrogenated norbornene ring-opening polymer B used was changed from 95 parts to 75 parts and the amount of cyclic olefin polymer Y used was changed from 5 parts to 25 parts during the preparation of the resin composition. Evaluations were then performed in the same manner as in Example 1. The results are shown in Table 1.

[0100] Example 8 A molded article was produced in the same manner as in Example 1, except that a resin composition prepared as follows was used. Evaluations were then performed in the same manner as in Example 1. The results are shown in Table 1. <Preparation of Resin Composition> [Preparation of Hydrogenated Norbornene Ring-Opening Polymer C] A hydrogenated norbornene ring-opening polymer (hydrogenated norbornene ring-opening polymer C) was prepared and pelletized in the same manner as in Example 1, except that 99 parts of norbornene and 1 part of dicyclopentadiene were used instead of 100 parts of norbornene, and the amount of diatomaceous earth-supported nickel catalyst used was changed from 3 parts to 5 parts. The hydrogenated norbornene ring-opening polymer C was crystalline as defined in the present invention. [Kneading and Extrusion] 90 parts of the pellets of hydrogenated norbornene ring-opening polymer C obtained as described above and 10 parts of cyclic olefin polymer Y were mixed, and the mixture was kneaded and extruded in the same manner as in Example 1 to obtain a pelletized resin composition.

[0101] Example 9 A resin composition and a molded article were prepared or fabricated in the same manner as in Example 2, except that the amount of norbornene ring-opening polymer hydride B used was changed from 95 parts to 90 parts, and 10 parts of ring-opening polymer hydride Z obtained in Production Example 3 were used instead of 5 parts of ring-opening polymer hydride X as the cyclic olefin polymer. Evaluations were then performed in the same manner as in Example 1. The results are shown in Table 2.

[0102] Comparative Example 1 A resin composition and a molded article were prepared or produced in the same manner as in Example 1, except that cyclic olefin polymer X was not used when preparing the resin composition. Evaluations were then carried out in the same manner as in Example 1. The results are shown in Table 2.

[0103] Comparative Example 2 A resin composition and a molded article were prepared or fabricated in the same manner as in Example 1, except that the amount of hydrogenated norbornene ring-opening polymer A used was changed from 95 parts to 97 parts and the amount of cyclic olefin polymer X used was changed from 5 parts to 3 parts during the preparation of the resin composition. Evaluations were then performed in the same manner as in Example 1. The results are shown in Table 2.

[0104] Comparative Example 3 A resin composition and a molded article were prepared or fabricated in the same manner as in Example 1, except that the amount of hydrogenated norbornene ring-opening polymer A used was changed from 95 parts to 70 parts and the amount of cyclic olefin polymer X used was changed from 5 parts to 30 parts during the preparation of the resin composition. Evaluations were then performed in the same manner as in Example 1. The results are shown in Table 2.

[0105] Comparative Example 4 A resin composition and a molded article were prepared or fabricated in the same manner as in Example 2, except that cyclic olefin polymer X was not used when preparing the resin composition. Evaluations were then carried out in the same manner as in Example 1. The results are shown in Table 2.

[0106] Comparative Example 5 A resin composition and a molded article were prepared or fabricated in the same manner as in Example 8, except that cyclic olefin polymer Y was not used when preparing the resin composition. Evaluations were then carried out in the same manner as in Example 1. The results are shown in Table 2.

[0107] Comparative Example 6 A molded body was produced in the same manner as in Example 1, except that a resin composition prepared as follows was used. Evaluations were then performed in the same manner as in Example 1. The results are shown in Table 1. <Preparation of Resin Composition> [Preparation of Hydrogenated Norbornene-Based Ring-Opening Polymer D] Under a nitrogen atmosphere, 500 parts of dehydrated cyclohexane were charged into a reactor at room temperature and mixed with 0.55 parts of 1-hexene, 0.40 parts of diisopropyl ether, 0.28 parts of triisobutylaluminum, and 0.10 parts of isobutyl alcohol. Then, while maintaining the temperature at 55°C, 247.5 parts of norbornene, 2.5 parts of dicyclopentadiene, and 20 parts of a 1.0% toluene solution of tungsten hexachloride were continuously added over 2 hours to carry out a polymerization reaction, yielding a polymerization reaction solution containing a norbornene-based ring-opening polymer. The polymerization conversion was nearly 100%. The mass ratio of norbornene units to dicyclopentadiene units in the resulting norbornene-based ring-opening polymer was 99:1. The polymerization reaction solution obtained above was transferred to a pressure-resistant hydrogenation reactor, and 0.5 parts of a diatomaceous earth-supported nickel catalyst (manufactured by JGC Chemical Industries, Ltd.; "T8400RL", nickel loading rate 58 wt%, manufactured by Süd-Chemie Catalysts) was added thereto, followed by a reaction at 160°C and a hydrogen pressure of 4.5 MPa for 6 hours. This solution was filtered using a filter equipped with a stainless steel wire mesh, using 1 part of separately added diatomaceous earth as a filter aid, to remove the catalyst. The resulting reaction solution was filtered using 0.13 x 10 ３ The mixture was dried in a vacuum oven set at 100°C or less and 100 Pa for 48 hours to obtain 190 parts of a norbornene ring-opening polymer D. The norbornene ring-opening polymer D was crystalline as defined in the present invention. 0.4 parts of an antioxidant (tetrakis[methylene-3-(3',5'-di-tert-butyl-4'-hydroxyphenyl)propionate]methane, Irganox 1010, manufactured by BASF) was added to 100 parts of the norbornene ring-opening polymer D obtained above, and the mixture was kneaded and pelletized in a twin-screw kneader (TEM-35B, manufactured by Toshiba Machine Co., Ltd.). [Kneading and Extrusion] 90 parts of the pellets of the norbornene ring-opening polymer D obtained as described above and 10 parts of the cyclic olefin polymer X were mixed, and the mixture was kneaded and extruded in the same manner as in Example 1 to obtain a pelletized resin composition.

[0108] In Tables 1 and 2 shown below, "hydrides A to D" represent "hydrides A to D of norbornene-based ring-opening polymers," respectively; "polymers X to Z" represent "cyclic olefin-based polymers X to Z," respectively; "NB" represents a structural unit derived from norbornene; "DCPD" represents a structural unit derived from dicyclopentadiene; "TCD" represents a structural unit derived from tetracyclododecene; "Mw" represents the weight-average molecular weight; and "Tg" represents the glass transition temperature.

[0109]

[0110]

[0111] Tables 1 and 2 show that molded articles with excellent solvent resistance and heat sealability were produced in Examples 1 to 9, which used resin compositions in which the mass ratio of the norbornene-based ring-opening polymer hydrogenated product to the cyclic olefin polymer was within a predetermined range and the proportion of meso-dyads in the cis structural unit (I) was less than a predetermined value. On the other hand, in Comparative Examples 1 and 4 to 5, which used resin compositions that did not contain a cyclic olefin polymer, and in Comparative Example 2, which used a resin composition in which the mass ratio of the norbornene-based ring-opening polymer hydrogenated product to the cyclic olefin polymer was outside the predetermined range, the heat sealability of the molded articles was found to be inferior to that of Examples 1 to 9. Furthermore, in Comparative Example 3, which used a resin composition in which the mass ratio of the norbornene-based ring-opening polymer hydrogenated product to the cyclic olefin polymer was outside the predetermined range, the solvent resistance of the molded articles was found to be inferior to that of Examples 1 to 9. Furthermore, in Comparative Example 6, which used a resin composition in which the proportion of meso-dyads in the cis structural unit (I) was equal to or greater than a predetermined value, the solvent resistance and heat sealability of the molded articles were both inferior to those of Examples 1 to 9.

[0112] According to the present invention, it is possible to provide a resin composition capable of forming a molded article having excellent solvent resistance and heat sealability, and a method for producing the same. Furthermore, according to the present invention, it is possible to provide a molded article having excellent solvent resistance and heat sealability.

Claims

1. A resin composition comprising a crystalline hydrogenated norbornene ring-opening polymer and an amorphous cyclic olefin polymer, wherein the hydrogenated norbornene ring-opening polymer is a hydrogenated ring-opening polymer containing a structural unit derived from norbornene, and the norbornene-derived structural unit contains a compound represented by the following formula (I): a ratio of meso-dyad structural units having a cis-1,3-cyclopentane structure represented by the formula: is less than 30%, and the mass ratio of the hydrogenated norbornene ring-opening polymer to the cyclic olefin polymer (hydrogenated norbornene ring-opening polymer / cyclic olefin polymer) is 75 / 25 or more and 95 / 5 or less.

2. The resin composition according to claim 1, wherein the hydrogenated norbornene ring-opening polymer contains 90% by mass or more of the structural units derived from norbornene.

3. The resin composition according to claim 1, wherein the glass transition temperature of the cyclic olefin polymer is 60°C or higher and 110°C or lower.

4. The hydrogenated norbornene ring-opening polymer may further be represented by the following formula (II): wherein the proportion of the structural units having the trans-1,3-cyclopentane structure in the total of the structural units having the cis-1,3-cyclopentane structure and the structural units having the trans-1,3-cyclopentane structure is 0.5% or more and 30% or less.

5. The resin composition according to claim 1, wherein the weight average molecular weight of the hydrogenated norbornene ring-opening polymer is 60,000 or more and 200,000 or less.

6. The resin composition according to claim 1, wherein the melting point of said hydrogenated norbornene ring-opening polymer is 110°C or higher and 150°C or lower.

7. A molded article formed using the resin composition according to any one of claims 1 to 6.

8. A method for producing the resin composition according to any one of claims 1 to 6, comprising the step of kneading the hydrogenated norbornene ring-opening polymer and the cyclic olefin polymer to obtain the resin composition.

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