Resin compositions, molded articles, and optical components

Abstract

The present invention provides a resin composition that can suppress the occurrence of black spots in molded articles during continuous molding and improve the heat and humidity resistance of the molded articles. [Solution] A resin composition comprising a cyclic olefin resin (A), a hindered amine light stabilizer (B), an antioxidant (X), and a hydrophilic agent (Y), wherein the Hansen distance Ra between the cyclic olefin resin (A) and the hindered amine light stabilizer (B) is 9.00 or less, and the weight-average molecular weight Mw of the hindered amine light stabilizer (B) is less than 2000.

Description

[Technical Field]

[0001] The present invention relates to resin compositions, molded articles, and optical components. [Background technology]

[0002] Cyclic olefin resins are used, for example, in optical components such as automotive camera lenses and camera lenses for portable devices; optical recording media such as DVDs and CDs; and transparent containers for food and pharmaceuticals. Molded articles for such applications are formed using molding machines such as injection molding machines. However, it is known that if the molding machine is operated continuously for a long period of time, resin burning (a phenomenon in which discoloration occurs in the resin composition) occurs inside the injection molding machine, resulting in the inclusion of black spots in the molded article (see, for example, Patent Document 1).

[0003] Patent Document 1 describes a method for manufacturing a cyclic olefin resin molded article using a molding machine having a cylinder and a screw inserted into the cylinder, comprising a step of molding a cyclic olefin resin with the molding machine, wherein the screw has a screw body and flights formed around the screw body, and the groove depth h of the screw at the melting completion position is a relatively small value when the position in the axial direction of the cylinder where the melting of the cyclic olefin resin is completed is defined as the melting completion position. Furthermore, Patent Document 1 states that "the present invention aims to provide a method for manufacturing a cyclic olefin resin molded article that suppresses the occurrence of black spots and exhibits excellent product yield during continuous operation when molding a resin made of a cyclic olefin polymer."

[0004] Patent Document 2 describes "a method for producing a cyclic olefin resin molded article, characterized by molding a cyclic olefin resin consisting of at least one cyclic olefin polymer selected from the group consisting of [A-1], [A-2], [A-3] and [A-4] below using a molding machine that uses a screw and cylinder in which the dimensional difference (Dd) between the screw diameter (d) and the cylinder inner diameter (D) is 0.2 mm or more and the compression ratio of the screw is 1.6 to 2.4; [A-1] an α-olefin-cyclic olefin random copolymer obtained by copolymerizing an α-olefin having 2 to 20 carbon atoms with a cyclic olefin represented by a specific formula (I) or (II); [A-2] a ring-opening polymer or copolymer of the cyclic olefin represented by the above formula (I) or (II); [A-3] a hydride of the ring-opening polymer or copolymer of the above [A-2]; and [A-4] a graft-modified product of the above [A-1], [A-2] or [A-3]." Furthermore, Patent Document 2 states that "the present invention aims to provide a method for manufacturing a cyclic olefin resin molded article that suppresses the occurrence of black spots and exhibits excellent product yield during continuous operation when molding a resin made of a cyclic olefin polymer."

[0005] Patent Document 3 describes a method for producing a cyclic olefin-based random copolymer molded article, characterized in that when melt-molding a cyclic olefin-based random copolymer pellet having a softening temperature (TMA) of 70°C or higher, obtained by copolymerizing (a) ethylene and (b) a cyclic olefin represented by a specific formula [I] or [II], the molding machine is used in which the surface of the part that comes into contact with the molten resin is treated by one of the methods selected from the group consisting of (i) to (iii) below: (i) hard chrome plating treatment (ii) titanium carbide treatment (iii) titanium nitride treatment. Furthermore, Patent Document 3 states that "the present invention aims to provide a method for producing a cyclic olefin-based random copolymer molded article that can reduce the amount of foreign matter such as burnt residue contained in the molded article when a cyclic olefin-based random copolymer pellet consisting of ethylene and a specific cyclic olefin is melt-molded, and that can produce a molded article with excellent transparency." [Prior art documents] [Patent Documents]

[0006] [Patent Document 1] Japanese Patent Publication No. 2015-110293 [Patent Document 2] Japanese Patent Publication No. 2000-233425 [Patent Document 3] Japanese Patent Application Publication No. 6-226802 [Overview of the project] [Problems that the invention aims to solve]

[0007] The present invention provides a resin composition that can suppress the occurrence of black spots in molded articles during continuous molding and improve the heat and humidity resistance of molded articles. [Means for solving the problem]

[0008] According to the present invention, the following resin compositions, molded articles, and optical components are provided.

[0009] 1. A resin composition comprising a cyclic olefin resin (A), a hindered amine light stabilizer (B), an antioxidant (X), and a hydrophilic agent (Y), The Hansen distance Ra between the cyclic olefin resin (A) and the hindered amine light stabilizer (B) is 9.00 or less. A resin composition wherein the weight-average molecular weight Mw of the hindered amine-based light stabilizer (B) is less than 2000. 2. The resin composition according to 1., wherein the Hansen distance Ra between the hindered amine light stabilizer (B) and the antioxidant (X) is 7.00 or less. 3. The cyclic olefin resin (A) is at least one repeating unit (a) derived from an olefin represented by the following formula (I), and one or more repeating units (b) derived from a cyclic olefin monomer selected from the group consisting of a repeating unit (AA) represented by the following formula (II), a repeating unit (AB) represented by the following formula (III), and a repeating unit (AC) represented by the following formula (IV), and includes a cyclic olefin copolymer (P1). The resin composition according to 1. or 2.

Chemical formula

Chemical formula

Chemical formula

Advantages of the Invention

[0010] According to the present invention, it is possible to provide a resin composition capable of suppressing the generation of black spots in a molded article during continuous molding of the molded article and improving the moisture and heat resistance of the molded article.

Modes for Carrying Out the Invention

[0011] In the present embodiment, "A to B" indicating a numerical range represents A or more and B or less unless otherwise specified.

[0012] In this embodiment, "having substituents" of an alkyl group, unless otherwise specified, means that hydrogen atoms present in its structure are substituted by substituents. The position of the substituents and the number of substituents are not particularly limited. Note that if the substituent has carbon atoms, the number of carbon atoms in the substituent is not included in the total number of carbon atoms of the substituted group. For example, an ethyl group having a phenyl group as a substituent is considered an alkyl group with 2 carbon atoms.

[0013] Furthermore, the various monomers in this embodiment may be derived from fossil raw materials, from biological sources such as biomass, or from mixtures thereof.

[0014] 1.Resin composition The resin composition of this embodiment will be described below.

[0015] The resin composition of this embodiment is a resin composition comprising a cyclic olefin resin (A), a hindered amine light stabilizer (B), an antioxidant (X), and a hydrophilic agent (Y), wherein the Hansen distance Ra between the cyclic olefin resin (A) and the hindered amine light stabilizer (B) is 9.00 or less, and the weight-average molecular weight Mw of the hindered amine light stabilizer (B) is less than 2000.

[0016] Although the mechanism by which the present invention can suppress the occurrence of black spots in molded articles during continuous molding is not clear, it is presumed that by setting the Hansen distance Ra of the cyclic olefin resin (A) and the hindered amine light stabilizer (B) (hereinafter sometimes referred to as HALS(B)) to a certain level or less, and further setting the weight-average molecular weight Mw of HALS(B) to a certain level or less, HALS(B) can be uniformly dispersed in the resin composition, thereby suppressing the occurrence of black spots.

[0017] According to the present invention, the occurrence of black spots in the molded body during continuous molding of the molded body can be suppressed, thereby enabling continuous molding for a longer period of time.

[0018] Furthermore, according to the present invention, HALS(B) can be uniformly dispersed in the resin composition, making it possible to reduce the amount of HALS(B) added.

[0019] The Hansen distance Ra is the distance in three dimensions between the Hansen solubility parameters (HSPs) of any two substances. A smaller Hansen distance Ra indicates better compatibility between the two substances. Here, HSP represents solubility as a three-dimensional vector, and this three-dimensional vector includes a dispersion term (δ). D ), polarity term (δ P ), hydrogen bond term (δ H ) consists of.

[0020] In this embodiment, the Hansen distance Ra between the cyclic olefin resin (A) and HALS (B) can be expressed by the following formula. Ra=[4(δ DA -δ DB ) 2 +( δ PA -δ PB ) 2 +( δ HA -δ HB ) 2 ] 1 / 2 In the above formula, δ DA is the dispersion term for cyclic olefin resin (A), and δ DB is the variance term of HALS(B), and δ PA is the polarity term of the cyclic olefin resin (A), and δ PB is the polar term of HALS(B), and δ HA This is the hydrogen bonding term of the cyclic olefin resin (A), and δ HB This is the hydrogen bonding term of HALS(B).

[0021] The Hansen distance Ra between the cyclic olefin resin (A) and the hindered amine light stabilizer (B) is, for example, 1.00 or more, 2.00 or more, 3.00 or more, and 9.00 or less. From the viewpoint of further suppressing the occurrence of black spots in the molded body during continuous molding of the molded body, it is preferably 8.50 or less, more preferably 8.00 or less, even more preferably 7.50 or less, even more preferably 7.00 or less, even more preferably 6.50 or less, and even more preferably 6.00 or less. From the viewpoint of further suppressing the occurrence of black spots in the molded body during continuous molding of the molded body, it is preferably 1.00 or more and 8.50 or less, more preferably 2.00 or more and 8.00 or less, even more preferably 3.00 or more and 7.50 or less, even more preferably 3.00 or more and 7.00 or less, even more preferably 3.00 or more and 6.50 or less, and even more preferably 3.00 or more and 6.00 or less.

[0022] The Hansen distance Ra between the hindered amine light stabilizer (B) and the antioxidant (X) may be, for example, 0.10 or more, 0.50 or more, or 1.00 or more, and from the viewpoint of further suppressing the occurrence of black spots in the molded body during continuous molding of the molded body, it is preferably 7.00 or less, more preferably 6.50 or less, even more preferably 6.00 or less, even more preferably 5.50 or less, even more preferably 5.00 or less, even more preferably 4.50 or less, and even more preferably 4.00 or less, and from the viewpoint of further suppressing the occurrence of black spots in the molded body during continuous molding of the molded body, it is preferably 0.10 or more and 7.00 or less, more preferably 0.50 or more and 6.50 or less, even more preferably 1.00 or more and 6.00 or less, even more preferably 1.00 or more and 5.50 or less, even more preferably 1.00 or more and 5.00 or less, even more preferably 1.00 or more and 4.50 or less, and even more preferably 1.00 or more and 4.00 or less.

[0023] In this embodiment, the Hansen distance Ra between HALS(B) and the antioxidant(X) can be expressed by the following formula. Ra=[4(δ DB -δ DX ) 2 +( δ PB-δ PX ) 2 +( δ HB -δ HX ) 2 ] 1 / 2 In the above formula, δ DB is the variance term of HALS(B), and δ DX is the dispersion term for the antioxidant (X), and δ PB is the polar term of HALS(B), and δ PX is the polar term of the antioxidant (X), and δ HB This is the hydrogen bonding term of HALS(B), and δ HX This is the hydrogen bonding term of the antioxidant (X).

[0024] The following describes each component included in the resin composition of this embodiment.

[0025] <Cyclic olefin resin (A)> The following describes cyclic olefin resin (A).

[0026] The cyclic olefin resin (A) in this embodiment is not particularly limited and may be a cyclic olefin homopolymer or a cyclic olefin copolymer. Furthermore, the cyclic olefin resin (A) in this embodiment may be used alone or in combination of two or more types.

[0027] From the viewpoint of improving the transparency, refractive index, heat resistance, and moldability of the molded article, the cyclic olefin resin (A) preferably includes a cyclic olefin copolymer (P1) comprising at least one repeating unit (a) derived from an olefin represented by the following formula (I), and one or more repeating units (b) derived from a cyclic olefin monomer selected from the group consisting of a repeating unit (AA) represented by the following formula (II), a repeating unit (AB) represented by the following formula (III), and a repeating unit (AC) represented by the following formula (IV).

[0028] [ka]

[0029] In equation (I), R 300 This represents a hydrogen atom or a linear or branched hydrocarbon group having 1 to 29 carbon atoms.

[0030] [ka]

[0031] In equation (II), u is 0 or 1, v is 0 or a positive integer, preferably an integer between 0 and 2, more preferably 0 or 1, w is 0 or 1, R 61 ~R 78 R a1 and R b1 These may be the same or different from each other, and are a hydrogen atom, a halogen atom, an alkyl group having 1 to 20 carbon atoms, a halogenated alkyl group having 1 to 20 carbon atoms, a cycloalkyl group having 3 to 15 carbon atoms, or an aromatic hydrocarbon group having 6 to 20 carbon atoms, R 75 ~R 78 These elements may be bonded to each other to form a monocycle or polycycle.

[0032] [ka]

[0033] In equation (III), x and d are integers greater than or equal to 0 or 1, y and z are 0, 1 or 2, and R 81 ~R 99 These may be the same or different from each other, and are a hydrogen atom, a halogen atom, an aliphatic hydrocarbon group which is an alkyl group having 1 to 20 carbon atoms or a cycloalkyl group having 3 to 15 carbon atoms, an aromatic hydrocarbon group which is an aromatic hydrocarbon group which is a 6 to 20 carbon atom or an alkoxy group, R 89 and R 90 The carbon atom to which it is bonded, and R 93 The carbon atom or R to which it is bonded 91 The carbon atom to which it is bonded may be directly bonded or bonded via an alkylene group having 1 to 3 carbon atoms, and when y=z=0, R 95 and R 92or R 95 and R 99 These elements may be bonded to each other to form a monocyclic or polycyclic aromatic ring.

[0034] [ka]

[0035] In equation (IV), R 100 and R 101 These elements may be identical or different from each other, and represent a hydrogen atom or a hydrocarbon group having 1 to 5 carbon atoms, where f is an integer of 1 ≤ f ≤ 18.

[0036] Olefin monomers, which are copolymerization raw materials for cyclic olefin copolymers (P1), undergo addition copolymerization to form repeating units (a) represented by formula (I). Specifically, olefin monomers represented by the following formula (Ia), which corresponds to formula (I), are used.

[0037] [ka]

[0038] In equation (Ia), R 300The group represents a hydrogen atom or a linear or branched hydrocarbon group having 1 to 29 carbon atoms. Examples of olefin monomers represented by formula (Ia) include ethylene, propylene, 1-butene, 1-pentene, 1-hexene, 3-methyl-1-butene, 3-methyl-1-pentene, 3-ethyl-1-pentene, 4-methyl-1-pentene, 4-methyl-1-hexene, 4,4-dimethyl-1-hexene, 4,4-dimethyl-1-pentene, 4-ethyl-1-hexene, 3-ethyl-1-hexene, 1-octene, 1-decene, 1-dodecene, 1-tetradecene, 1-hexadecene, 1-octadecene, and 1-eicosene. From the viewpoint of obtaining molded articles with superior heat resistance, mechanical properties, and optical properties, at least one selected from the group consisting of ethylene and propylene is preferred, and ethylene is more preferred. Two or more olefin monomers represented by formula (Ia) may be used. Furthermore, the olefin monomer represented by formula (Ia) may include at least one biomass-derived monomer (e.g., ethylene, propylene, and α-olefin). When the total amount of repeating units constituting the cyclic olefin copolymer (P1) is taken as 100 mol%, the proportion of repeating units (a) derived from olefins is preferably 5 mol% to 95 mol%, more preferably 20 mol% to 90 mol%, even more preferably 40 mol% to 85 mol%, and even more preferably 50 mol% to 80 mol%. Furthermore, the proportion of repeating units (a) derived from olefins is, 13 It can be measured by 13C-NMR.

[0039] A cyclic olefin monomer, one of the copolymerization raw materials for a cyclic olefin copolymer (P1), undergoes addition copolymerization to form repeating units (b) derived from the cyclic olefin monomer represented by formula (II), formula (III), or formula (IV). Specifically, cyclic olefin monomers represented by formulas (IIa), (IIIa), and (IVa), corresponding to formulas (II), (III), and (IV), respectively, are used.

[0040] [ka]

[0041] In formula (IIa), u is 0 or 1, v is 0 or a positive integer, preferably an integer between 0 and 2, more preferably 0 or 1, w is 0 or 1, R 61 ~R 78 R a1 and R b1 These may be the same or different from each other, and are a hydrogen atom, a halogen atom, an alkyl group having 1 to 20 carbon atoms, a halogenated alkyl group having 1 to 20 carbon atoms, a cycloalkyl group having 3 to 15 carbon atoms, or an aromatic hydrocarbon group having 6 to 20 carbon atoms, R 75 ~R 78 These elements may be bonded to each other to form a monocycle or polycycle.

[0042] [ka]

[0043] In formula (IIIa), x and d are integers of 0 or greater than or equal to 1, preferably integers of 0 or greater than or equal to 2, more preferably 0 or 1, and y and z are 0, 1 or 2, R 81 ~R 99 These may be the same or different from each other, and are a hydrogen atom, a halogen atom, an aliphatic hydrocarbon group which is an alkyl group having 1 to 20 carbon atoms or a cycloalkyl group having 3 to 15 carbon atoms, an aromatic hydrocarbon group which is an aromatic hydrocarbon group which is a 6 to 20 carbon atom or an alkoxy group, R 89 and R 90 The carbon atom to which it is bonded, and R 93 The carbon atom or R to which it is bonded 91 The carbon atom to which it is bonded may be directly bonded or bonded via an alkylene group having 1 to 3 carbon atoms, and when y=z=0, R 95 and R 92 or R 95 and R 99 These elements may be bonded to each other to form a monocyclic or polycyclic aromatic ring.

[0044] [ka]

[0045] In equation (IVa), R 100 and R 101 These elements may be identical or different from each other, and represent a hydrogen atom or a hydrocarbon group having 1 to 5 carbon atoms, where f is an integer of 1 ≤ f ≤ 18.

[0046] Specific examples of cyclic olefin monomers represented by formula (IIa), (IIIa), or (IVa) can be found in paragraphs 0037-0063 of International Publication No. 2006 / 118261. Furthermore, the monomers used as copolymer raw materials for the cyclic olefin copolymer (P1) include, for example, one or more selected from the group consisting of dicyclopentadiene and ethylene. The ethylene may also include biomass-derived monomers (ethylene).

[0047] Specifically, bicyclo-2-heptene derivatives (bicyclohept-2-ene derivatives), tricyclo-3-decene derivatives, tricyclo-3-undecene derivatives, tetracyclo-3-dodecene derivatives, pentacyclo-4-pentadecene derivatives, pentacyclopentadecadiene derivatives, pentacyclo-3-pentadecene derivatives, pentacyclo-4-hexadecene derivatives, pentacyclo-3-hexadecene derivatives, hexacyclo-4-heptadecene derivatives, heptacyclo-5-eicosene derivatives Examples include conductors, heptacyclo-4-eicosene derivatives, heptacyclo-5-heneicosene derivatives, octacyclo-5-docosene derivatives, nonacyclo-5-pentacosene derivatives, nonacyclo-6-hexacosene derivatives, cyclopentadiene-acenaphthylene adducts, 1,4-methano-1,4,4a,9a-tetrahydrofluorene derivatives, 1,4-methano-1,4,4a,5,10,10a-hexahydroanthracene derivatives, and cycloalkylene derivatives having 3 to 20 carbon atoms.

[0048] Among the cyclic olefin monomers represented by formulas (IIa), (IIIa), or (IVa), the cyclic olefin represented by formula (IIa) is preferred. Furthermore, it is preferable to use either a cyclic olefin represented by formula (IIa) or a cyclic olefin represented by formula (IIIa) or (IVa).

[0049] Examples of cyclic olefin monomers represented by formula (IIa) include bicyclo[2.2.1]-2-heptene (also referred to herein as "norbornene") and tetracyclo[4.4.0.1 2,5 .1 7,10 It is preferable to use at least one selected from the group consisting of ]-3-dodecene (also referred to herein as "tetracyclododecene"), and tetracyclo[4.4.0.1 2,5 .1 7,10 It is more preferable to use ]-3-dodecene. These cyclic olefins have a rigid ring structure, which has the advantage of making it easier to maintain the elastic modulus of the copolymer and molded article.

[0050] When the total amount of repeating units constituting the cyclic olefin copolymer (P1) is set to 100 mol%, the proportion of repeating units (b) derived from the cyclic olefin monomer is preferably 5 mol% to 95 mol%, more preferably 10 mol% to 80 mol%, even more preferably 15 mol% to 60 mol%, and even more preferably 20 mol% to 50 mol%. In this embodiment, the proportion of repeating units (b) derived from cyclic olefin monomers is, for example, 1 H-NMR or 13 It can be measured by 13C-NMR.

[0051] The copolymerization type of the cyclic olefin copolymer (P1) is not particularly limited, but examples include random copolymers and block copolymers. From the viewpoint of further improving optical properties such as transparency, refractive index, and birefringence, and obtaining optical components with higher precision, it is preferable to use a random copolymer as the cyclic olefin copolymer (P1).

[0052] As a cyclic olefin copolymer (P1), ethylene and tetracyclo[4.4.0.1 2,5 .1 7,10 Random copolymers of ethylene and bicyclo[2.2.1]-2-heptene, and random copolymers of ethylene and tetracyclo[4.4.0.1 2,5 .1 7,10 Preferably, it is at least one selected from the group consisting of a random copolymer of ]-3-dodecene and benzonorbornadiene, and is ethylene and tetracyclo[4.4.0.1 2,5 .1 7,10 Random copolymer with ]-3-dodecene and ethylene and tetracyclo[4.4.0.1 2,5 .1 7,10 More preferably, at least one selected from the group consisting of a random copolymer of ]-3-dodecene and benzonorbornadiene, and ethylene and tetracyclo[4.4.0.1 2,5 .1 7,10 A random copolymer with ]-3-dodecene is even more preferred.

[0053] The cyclic olefin copolymer (P1) may be used alone or in combination of two or more types.

[0054] The cyclic olefin copolymer (P1) can be produced by selecting appropriate conditions according to the methods described in, for example, Japanese Patent Publication No. 60-168708, Japanese Patent Publication No. 61-120816, Japanese Patent Publication No. 61-115912, Japanese Patent Publication No. 61-115916, Japanese Patent Publication No. 61-271308, Japanese Patent Publication No. 61-272216, Japanese Patent Publication No. 62-252406, and Japanese Patent Publication No. 62-252407.

[0055] From the viewpoint of improving the transparency, refractive index, heat resistance, and moldability of the molded article, the cyclic olefin resin (A) preferably comprises a cyclic olefin copolymer (P2) containing repeating units (AA) represented by the following formula (II) and repeating units (C) derived from a cyclic olefin having an aromatic ring, wherein the repeating units (AA) do not contain an aromatic ring, and the cyclic olefin having an aromatic ring comprises one or more compounds selected from the group consisting of compounds represented by the following formula (C-1), compounds represented by the following formula (C-2), and compounds represented by the following formula (C-3).

[0056] [ka]

[0057] In equation (II), u is 0 or 1, v is 0 or a positive integer, preferably an integer between 0 and 2, more preferably 0 or 1, w is 0 or 1, R 61 ~R 78 R a1 and R b1 These may be the same or different from each other, and are a hydrogen atom, a halogen atom, an alkyl group having 1 to 20 carbon atoms, an alkyl halide having 1 to 20 carbon atoms, or a cycloalkyl group having 3 to 15 carbon atoms, and R 75 ~R 78 These elements may be bonded to each other to form a monocycle or polycycle.

[0058] [ka]

[0059] In equation (C-1), n ​​and q are independently 0, 1, or 2, and R 1 ~R 17 Each of these is independently a hydrogen atom, a halogen atom other than a fluorine atom, or a hydrocarbon group having 1 to 20 carbon atoms which may be substituted with a halogen atom other than a fluorine atom, and R 10 ~R 17 One of them is a bond, and when q=0, R 10 and R 11 , R11 and R 12 , R 12 and R 13 , R 13 and R 14 , R 14 and R 15 , R 15 and R 10 They may be bonded to each other to form a monocycle or polycycle, and when q=1 or 2, R 10 and R 11 , R 11 and R 17 , R 17 and R 17 , R 17 and R 12 , R 12 and R 13 , R 13 and R 14 , R 14 and R 15 , R 15 and R 16 , R 16 and R 16 , R 16 and R 10 These elements may be bonded to each other to form a monocycle or polycycle, and the monocycle or polycycle may have a double bond, and the monocycle or polycycle may be an aromatic ring.

[0060] [ka]

[0061] In equation (C-2), n and m are independently 0, 1, or 2, and q is 1, 2, or 3, R 18 ~R 31 Each of these is independently a hydrogen atom, a halogen atom other than a fluorine atom, or a hydrocarbon group having 1 to 20 carbon atoms that may be substituted with a halogen atom other than a fluorine atom, and when q=1, R 28 and R 29 , R 29 and R 30 , R 30 and R 31 They may be bonded to each other to form a monocycle or polycycle, and when q=2 or 3, R 28 and R 28, R 28 and R 29 , R 29 and R 30 , R 30 and R 31 , R 31 and R 31 These elements may be bonded to each other to form a monocycle or polycycle, and the monocycle or polycycle may have a double bond, and the monocycle or polycycle may be an aromatic ring.

[0062] [ka]

[0063] In equation (C-3), q is 1, 2, or 3, and R 32 ~R 39 Each of these is independently a hydrogen atom, a halogen atom other than a fluorine atom, or a hydrocarbon group having 1 to 20 carbon atoms that may be substituted with a halogen atom other than a fluorine atom, and when q=1, R 36 and R 37 , R 37 and R 38 , R 38 and R 39 They may be bonded to each other to form a monocycle or polycycle, and when q=2 or 3, R 36 and R 36 , R 36 and R 37 , R 37 and R 38 , R 38 and R 39 , R 39 and R 39 These elements may be bonded to each other to form a monocycle or polycycle, and the monocycle or polycycle may have a double bond, and the monocycle or polycycle may be an aromatic ring.

[0064] The cyclic olefin copolymer (P2) contains repeating units (AA) represented by formula (II) and repeating units (C) derived from cyclic olefins having aromatic rings, thereby improving heat and humidity resistance while maintaining good transparency.

[0065] (Cyclic olefin-derived repeating units (AA)) The repeating unit (AA) is a repeating unit represented by equation (II). By including the repeating unit (AA), the refractive index of the resulting molded article can be further improved. Furthermore, the repeating units (AA) in the cyclic olefin copolymer (P2) do not contain aromatic rings. By not including aromatic rings in the repeating units (AA), the moldability of the resulting molded article can be further improved.

[0066] When the total content of repeating units (AA) and repeating units (C) in the cyclic olefin copolymer (P2) is set to 100 mol%, the content of repeating units (AA) in the cyclic olefin copolymer (P2) is preferably 5 mol% to 95 mol%, more preferably 30 mol% to 95 mol%, and even more preferably 50 mol% to 95 mol%. In this embodiment, the content of repeating units (AA) is, for example, 1 H-NMR or 13 It can be measured by 13C-NMR.

[0067] (Repeating units (C) derived from cyclic olefins having aromatic rings) The repeating unit (C) is a repeating unit derived from a cyclic olefin having an aromatic ring. Examples of cyclic olefins having aromatic rings include the compound represented by formula (C-1), the compound represented by formula (C-2), and the compound represented by formula (C-3) below. These cyclic olefins having aromatic rings may be used individually or in combination of two or more.

[0068] [ka]

[0069] In formula (C-1), n ​​and q are each independently 0, 1, or 2. n is preferably 0 or 1, and more preferably 0. q is preferably 0 or 1, and more preferably 0. R 1 ~R 17 Each of these is independently a hydrogen atom, a halogen atom other than a fluorine atom, or a hydrocarbon group having 1 to 20 carbon atoms which may be substituted with a halogen atom other than a fluorine atom, and R 10 ~R 17 One of them is a bonding hand, R 15 It is preferable that the coupling is a joint. R 1 ~R 17 Each of these is preferably an independent hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms, and more preferably a hydrogen atom. Also, when q=0, R 10 and R 11 , R 11 and R 12 , R 12 and R 13 , R 13 and R 14 , R 14 and R 15 , R 15 and R 10 They may be bonded to each other to form a monocycle or polycycle, and when q=1 or 2, R 10 and R 11 , R 11 and R 17 , R 17 and R 17 , R 17 and R 12 , R 12 and R 13 , R 13 and R 14 , R 14 and R 15 , R 15 and R 16 , R 16 and R 16 , R 16 and R 10 These elements may be bonded to each other to form a monocycle or polycycle, and the monocycle or polycycle may have a double bond, and the monocycle or polycycle may be an aromatic ring. Among the compounds represented by formula (C-1), the compound shown in formula (C-1A) below is preferred.

[0070] [ka]

[0071] In formula (C-1A), n is 0, 1, or 2, preferably 0 or 1, and more preferably 0.

[0072] [ka]

[0073] In formula (C-2), n and m are independently 0, 1, or 2, and q is 1, 2, or 3. m is preferably 0 or 1, and more preferably 1. n is preferably 0 or 1, and more preferably 0. q is preferably 1 or 2, and more preferably 1. R 18 ~R 31 Each of these is independently a hydrogen atom, a halogen atom other than a fluorine atom, or a hydrocarbon group having 1 to 20 carbon atoms that may be substituted with a halogen atom other than a fluorine atom. R 18 ~R 31 Each of these is preferably an independent hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms, and more preferably a hydrogen atom. Also, when q=1, R 28 and R 29 , R 29 and R 30 , R 30 and R 31 They may be bonded to each other to form a monocycle or polycycle, and when q=2 or 3, R 28 and R 28 , R 28 and R 29 , R 29 and R 30 , R 30 and R 31 , R 31 and R31 These elements may be bonded to each other to form a monocycle or polycycle, and the monocycle or polycycle may have a double bond, and the monocycle or polycycle may be an aromatic ring.

[0074] [ka]

[0075] In formula (C-3), q is 1, 2, or 3, preferably 1 or 2, and more preferably 1. R 32 ~R 39 Each of these is independently a hydrogen atom, a halogen atom other than a fluorine atom, or a hydrocarbon group having 1 to 20 carbon atoms that may be substituted with a halogen atom other than a fluorine atom. R 32 ~R 39 Each of these is preferably an independent hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms, and more preferably a hydrogen atom. Also, when q=1, R 36 and R 37 , R 37 and R 38 , R 38 and R 39 They may be bonded to each other to form a monocycle or polycycle, and when q=2 or 3, R 36 and R 36 , R 36 and R 37 , R 37 and R 38 , R 38 and R 39 , R 39 and R 39 These elements may be bonded to each other to form a monocycle or polycycle, and the monocycle or polycycle may have a double bond, and the monocycle or polycycle may be an aromatic ring.

[0076] Furthermore, in formulas (C-1) to (C-3), examples of hydrocarbon groups having 1 to 20 carbon atoms include, independently, alkyl groups having 1 to 20 carbon atoms, cycloalkyl groups having 3 to 15 carbon atoms, and aromatic hydrocarbon groups. More specifically, examples of alkyl groups include methyl, ethyl, propyl, isopropyl, amyl, hexyl, octyl, decyl, dodecyl, and octadecyl groups; examples of cycloalkyl groups include cyclohexyl groups; and examples of aromatic hydrocarbon groups include aryl or aralkyl groups such as phenyl, tolyl, naphthyl, benzyl, and phenylethyl groups. These hydrocarbon groups may be substituted with halogen atoms other than fluorine atoms.

[0077] Among these, as the cyclic olefin having an aromatic ring, at least one selected from the group consisting of benzonorbornane, indenenorbornene, and methylphenylnorbornene is preferred.

[0078] When the total content of repeating units (AA) and repeating units (C) in the cyclic olefin copolymer (P2) is set to 100 mol%, the content of repeating units (C) in the cyclic olefin copolymer (P2) is preferably 5 mol% to 95 mol%, more preferably 5 mol% to 70 mol%, and even more preferably 5 mol% to 50 mol%. In this embodiment, the content of repeating units (AA) and repeating units (C) is, for example, 1 H-NMR or 13 It can be measured by 13C-NMR.

[0079] The copolymerization type of the cyclic olefin copolymer (P2) is not particularly limited, but examples include random copolymers and block copolymers. In this embodiment, from the viewpoint of obtaining optical components with excellent transparency and heat resistance, a random copolymer is preferred for the cyclic olefin copolymer (P2).

[0080] The cyclic olefin copolymer (P2) can be manufactured by selecting appropriate conditions according to the methods described in, for example, Japanese Patent Publication No. 60-168708, Japanese Patent Publication No. 61-120816, Japanese Patent Publication No. 61-115912, Japanese Patent Publication No. 61-115916, Japanese Patent Publication No. 61-271308, Japanese Patent Publication No. 61-272216, Japanese Patent Publication No. 62-252406, Japanese Patent Publication No. 62-252407, Japanese Patent Publication No. 2007-314806, Japanese Patent Publication No. 2010-241932, etc.

[0081] It is preferable that the cyclic olefin resin (A) does not contain carbon-carbon double bonds, but if it does, it is preferable that the amount is 0.5 g or less per 100 g of cyclic olefin resin (A). This is preferable because substantially omitting carbon-carbon double bonds suppresses the deterioration of the resin composition. The carbon-carbon double bond content in the cyclic olefin resin (A) is determined by the iodine value method (titration method) in accordance with JIS K0070.

[0082] According to ASTM D1238, the melt flow rate (MFR) of the cyclic olefin resin (A), measured at 260°C and a load of 2.16 kgf, is preferably 5 g / 10 min or more, more preferably 8 g / 10 min or more, even more preferably 10 g / 10 min or more, and even more preferably 20 g / 10 min or more, and the upper limit is not particularly limited, but may be, for example, 100 g / 10 min or less, or 50 g / 10 min or less.

[0083] The glass transition temperature (Tg) of the cyclic olefin resin (A) is preferably 70°C or higher, more preferably 80°C or higher, even more preferably 90°C or higher, even more preferably 100°C or higher, even more preferably 110°C or higher, even more preferably 120°C or higher, even more preferably 130°C or higher, and even more preferably 140°C or higher, and also preferably 250°C or lower, more preferably 200°C or lower, even more preferably 180°C or lower, even more preferably 170°C or lower, and even more preferably 160°C or lower, from the viewpoint of improving the balance of moldability, transparency and heat resistance. The glass transition temperature (Tg) of the cyclic olefin resin (A) can be measured, for example, by the method described in the examples.

[0084] The intrinsic viscosity η [dl / g] (in decalin at 135°C) of the cyclic olefin resin (A) is preferably 0.05 dl / g or more, more preferably 0.1 dl / g or more, even more preferably 0.2 dl / g or more, and even more preferably 0.3 dl / g or more, from the viewpoint of further improving the balance of moldability and optical properties. Similarly, it is preferably 5.0 dl / g or less, more preferably 4.0 dl / g or less, even more preferably 2.0 dl / g or less, and even more preferably 1.0 dl / g or less. The intrinsic viscosity η [dl / g] of cyclic olefin resin (A) can be measured in accordance with ASTM J1601.

[0085] <Hindered amine-based light stabilizer (B)> The following describes hindered amine light stabilizers (B) (sometimes referred to as HALS(B)).

[0086] As HALS(B), any compound having one or more hindered amine structures (specifically, the substructure represented by formula (b1) below) can be used as appropriate.

[0087] [ka]

[0088] In formula (b1), * represents a bond with another chemical structure.

[0089] Furthermore, as HALS(B), compounds known as hindered amine light stabilizers (HALS) can be used.

[0090] HALS(B) may be used individually or in combination of two or more types.

[0091] HALS(B) includes, for example, one or more selected from the group consisting of hindered amine compounds described in paragraphs

[0058] to

[0082] of International Publication No. 2006 / 112434, hindered amine compounds described in paragraphs

[0124] to

[0186] of International Publication No. 2008 / 047468; piperidine derivatives or salts thereof described in paragraphs

[0187] to

[0226] of International Publication No. 2008 / 047468; polyamine derivatives or salts thereof described in Japanese Patent Application Publication No. 2006-321793; and products commercially available as hindered amine light stabilizers.

[0092] Examples of commercially available hindered amine light stabilizers include Chimassorb 2020, Chimassorb 944, Tinuvin 622, Tinuvin PA144, Tinuvin 765, Tinuvin 770, and Tinuvin 152 (all manufactured by BASF); Cyasorb UV-3853, Cyasorb UV-3529, Cyasorb UV-3346, and Cyasorb UV-531 (all manufactured by Cytec); and Adeka Stab LA-52, Adeka Stab LA-57, Adeka Stab LA-63P, Adeka Stab LA-68, Adeka Stab LA-72, Adeka Stab LA-77Y, Adeka Stab LA-81, Adeka Stab LA-82, and Adeka Stab LA-87 (all manufactured by ADEKA).

[0093] From the viewpoint of reducing the Hansen distance Ra between the cyclic olefin resin (A) and HALS (B), further suppressing the occurrence of black spots in the molded article during continuous molding of the molded article, and improving the light resistance of the molded article, HALS (B) preferably comprises one or more selected from the group consisting of Cyasorb UV-3529, Cyasorb UV-3346, Tinuvin 152, Adeka stub LA-52, and Adeka stub LA-57, and more preferably comprises one or more selected from the group consisting of Cyasorb UV-3529, Cyasorb UV-3346, and Tinuvin 152.

[0094] From the viewpoint of further suppressing the occurrence of black spots in molded articles during continuous molding of molded articles, HALS(B) preferably contains a compound represented by the following general formula (b1-1).

[0095] [ka]

[0096] In general formula (b1-1), R3, R4, R5 and R6 are C1~C 22 It is an alkyl group, and R8 independently consists of a hydrogen atom, C1~C 22 Alkyl and C1-C 22 Selected from alkoxy groups, L2 is C1~C 22 It is an alkylene group, R9 and R 10 These are, independently, hydrogen atoms, C1~C 22 Selected from alkyl groups, C3-C8 cycloalkyl groups and substituted C3-C8 cycloalkyl groups, or R9 and R 10 Collectively, z can represent divalent groups that form morpholine and / or piperidine rings, where z is a positive integer less than or equal to 20.

[0097] From the viewpoint of further suppressing the occurrence of black spots in molded articles during continuous molding of molded articles, the compound represented by general formula (b1-1) preferably includes one or two compounds selected from the group consisting of compounds represented by the following chemical formulas.

[0098] [ka]

[0099] [ka]

[0100] From the viewpoint of further suppressing the occurrence of black spots in molded articles during continuous molding of molded articles, HALS(B) preferably contains a compound represented by the following general formula (b1-2).

[0101] [ka]

[0102] In general formula (b1-2), R 3 , R 4 , R 5 and R 6 R is a hydrogen atom or a saturated or unsaturated hydrocarbon group having 1 to 18 carbon atoms. 7 These are hydroxyl groups, hydroxyalkyl groups, alkoxy groups, or alkanolamino groups.

[0103] From the viewpoint of further suppressing the occurrence of black spots in molded articles during continuous molding of molded articles, the compounds represented by general formula (b1-2) preferably include compounds represented by the following chemical formulas.

[0104] [ka]

[0105] From the viewpoint of further suppressing the occurrence of black spots in molded articles during continuous molding of molded articles, HALS(B) preferably contains a compound represented by the following formula.

[0106] [ka]

[0107] The weight-average molecular weight Mw of HALS(B) may be, for example, greater than 200, greater than 400, greater than 500, and less than 2000. From the viewpoint of further suppressing the occurrence of black spots in the molded body during continuous molding of the molded body, it is preferably less than 1950, more preferably less than 1900, even more preferably less than 1850, even more preferably less than 1800, and even more preferably less than 1750. From the viewpoint of further suppressing the occurrence of black spots in the molded body during continuous molding of the molded body, it is preferably greater than 200 and less than 1950, more preferably greater than 400 and less than 1900, even more preferably greater than 500 and less than 1850, even more preferably greater than 500 and less than 1800, and even more preferably greater than 500 and less than 1750. The weight-average molecular weight (Mw) of HALS(B) can be measured, for example, by gel permeation chromatography (GPC) or mass spectrometry (MS). Furthermore, the theoretical value of the weight-average molecular weight (Mw) of HALS(B) can be calculated from its chemical formula.

[0108] The content of the HALS (B) is preferably 0.001 part by mass or more, more preferably 0.01 part by mass or more, still more preferably 0.05 part by mass or more, still more preferably 0.10 part by mass or more, still more preferably 0.20 part by mass or more, still more preferably 0.25 part by mass or more, from the viewpoint of improving the light resistance of the molded article, based on 100 parts by mass of the cyclic olefin resin (A). And, from the viewpoint of further suppressing the generation of black spots in the molded article during continuous molding of the molded article, it is preferably 20.00 parts by mass or less, more preferably 10.00 parts by mass or less, still more preferably 5.00 parts by mass or less, still more preferably 2.00 parts by mass or less. And, from the viewpoint of improving the balance between the light resistance of the molded article and the suppression of the generation of black spots in the molded article during continuous molding of the molded article, it is preferably 0.001 part by mass or more and 20.00 parts by mass or less, more preferably 0.01 part by mass or more and 10.00 parts by mass or less, still more preferably 0.05 part by mass or more and 5.00 parts by mass or less, still more preferably 0.10 part by mass or more and 2.00 parts by mass or less, still more preferably 0.20 part by mass or more and 2.00 parts by mass or less, still more preferably 0.25 part by mass or more and 2.00 parts by mass or less.

[0109] <Antioxidant (X)> Hereinafter, the antioxidant (X) will be described.

[0110] The antioxidant (X) may be used alone or in combination of two or more.

[0111] From the viewpoints of being able to make the Hansen distance Ra between the hindered amine light stabilizer (B) and the antioxidant (X) smaller, being able to suppress the oxidation of the resin composition, being able to suppress the coloring of the molded article, and being able to improve the transparency of the molded article, the antioxidant (X) contains a phenolic antioxidant.

[0112] From the viewpoint of reducing the Hansen distance Ra between the hindered amine light stabilizer (B) and the antioxidant (X), suppressing oxidation of the resin composition, suppressing discoloration of the molded article, and improving the transparency of the molded article, the phenolic antioxidant in this embodiment is preferably Irganox 1076 (manufactured by BASF, compound name: octadecyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate) and Irganox 1330 (manufactured by BASF, compound name: 3,3',3'',5,5',5''-hexa-tert- Butyl-α-α'-α''-(mesitylene-2,4,6-triyl)tri-p-cresol), Irganox1010 (BASF, compound name: pentaerythritol tetrakis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate]), Sumilizer-GP (Sumitomo Chemical, compound name: 6-tert-butyl-4-[3-[(2,4,8,10-tetra-tert-butyldibenzo[d,f][1,3,2]dioxaphosfepin-6-yl)oxy]propyl]-2-methylphenol), dibutyl Droxytoluene, 1,3,5-Tris(3,5-di-tert-butyl-4-hydroxybenzyl)-1,3,5-triazine-2,4,6(1H,3H,5H)-trione, 3,9-bis{2-[3-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionyloxy]-1,1-dimethylethyl}-2,4,8,10-tetraoxaspiro[5.5]undecane, 1,3,5-Tris(3,5-di-tert-butyl-4-hydroxyphenylmethyl)-2,4,6-trimethylbenzene, 2,6-di-tert-butyl -4-methylphenol, 2,6-di-tert-butyl-4-ethylphenol, 2-tert-butyl-4,6-dimethylphenol, styrenephenol, 2,2'-methylenebis(4-ethyl-6-tert-butylphenol), 2,2'-thiobis-(6-tert-butyl-4-methylphenol), 2,2'-thiodiethylenebis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], 2-methyl-4,6-bis(octylsulfanylmethyl)phenol, 2,2'-isobutylidenebis(4,6-dimethylphenol), isooctyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate, N,N'-hexane-1,6-diylbis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionamide, 2,2'-oxamide-bis[ethyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], 2-ethylhexyl-3-(3',5'-di-tert-butyl-4'-hydroxyphenyl)propionate, 2,2'-ethylenebis(4,6-di-ter t-butylphenol), 3,5-di-tert-butyl-4-hydroxybenzenepropanoic acid and C13-15 alkyl ester, 2,5-di-tert-amylhydroquinone, polymer of hindered phenol (Adeka Palmarol trade name AO.OH.98), 2,2'-methylenebis[6-(1-methylcyclohexyl)-p-cresol], 2-tert-butyl-6-(3-tert-butyl-2-hydroxy-5-methylbenzyl)-4-methylphenyl acrylate, 2-[1-(2-hydroxy-3,5-di-tert-benzo [Diphenyl)ethyl]-4,6-di-tert-pentylphenyl acrylate, 6-[3-(3-tert-butyl-4-hydroxy-5-methyl)propoxy]-2,4,8,10-tetra-tert-butylbenz[d,f][1,3,2]-dioxaphosphobine, hexamethylenebis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate, bis[monoethyl(3,5-di-tert-butyl-4-hydroxybenzyl)phosphonate]calcium salt, 5,7-bis(1,1-dimethylethyl)-3-hydroxy Reaction product of C-2(3H)-benzofuranone and o-xylene, 2,6-di-tert-butyl-4-(4,6-bis(octylthio)-1,3,5-triazine-2-ylamino)phenol, DL-α-tocopherol (vitamin E), 2,6-bis(α-methylbenzyl)-4-methylphenol, bis[3,3-bis-(4'-hydroxy-3'-tert-butylphenyl)butanoic acid] glycol ester, 2,6-di-tert-butyl-p-cresol, 2,6-diphenyl-4-octadecyloxyphenol, stearyl(3,5-di-tert-butyl-4-hydroxyphenyl)propionate, distearyl(3,5-di-tert-butyl-4-hydroxybenzyl)phosphonate, tridecyl-3,5-tert-butyl-4-hydroxybenzylthioacetate, thiodiethylenebis[(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], 4,4'-thiobis(6-tert-butyl-m-cresol), 2-octylthio-4,6-di(3,5-di-tert-butyl-4-hydroxyphenoxy)- s-triazine, 2,2'-methylenebis(4-methyl-6-tert-butylphenol), bis[3,3-bis(4-hydroxy-3-tert-butylphenyl)butyric acid] glycol ester, 4,4'-butylidenebis(2,6-di-tert-butylphenol), 4,4'-butylidenebis(6-tert-butyl-3-methylphenol), 2,2'-ethylidenebis(4,6-di-tert-butylphenol), 1,1,3-tris(2-methyl-4-hydroxy-5-tert-butyl) (Triphenyl)butane, bis[2-tert-butyl-4-methyl-6-(2-hydroxy-3-tert-butyl-5-methylbenzyl)phenyl]terephthalate, 1,3,5-tris(2,6-dimethyl-3-hydroxy-4-tert-butylbenzyl)isocyanurate, 1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)isocyanurate, 1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)-2,4,6-trimethylbenzene, 1,3,5- Lis[(3,5-di-tert-butyl-4-hydroxyphenyl)propionyloxyethyl]isocyanurate, tetrakis[methylene-3-(3',5'-tert-butyl-4'-hydroxyphenyl)propionate]methane, 2-tert-butyl-4-methyl-6-(2-acryloyloxy-3-tert-butyl-5-methylbenzyl)phenol, 3,9-bis[2-(3-tert-butyl-4-hydroxy-5-methylhydrocinnamoyloxy)-1,1-dimethylethyl]-2,4,8,It comprises one or more 3-(3,5-dialkyl-4-hydroxyphenyl)propionic acid derivatives selected from the group consisting of 10-tetraoxaspiro[5.5]undecane, triethylene glycol bis[β-(3-tert-butyl-4-hydroxy-5-methylphenyl)propionate], stearyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionamide, palmityl-3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionamide, myristyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionamide, and lauryl-3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionamide, more preferably one or two selected from the group consisting of Irganox1010 and Sumilizer-GP, and even more preferably Irganox1010.

[0113] The content of the antioxidant (X) is preferably 0.001 parts by mass or more, more preferably 0.01 parts by mass or more, even more preferably 0.05 parts by mass or more, even more preferably 0.10 parts by mass or more, even more preferably 0.20 parts by mass or more, even more preferably 0.30 parts by mass or more, and even more preferably 0.35 parts by mass or more, and for example, it may be 10.00 parts by mass or less, 5.00 parts by mass or less, 2.00 parts by mass or less, 1.00 parts by mass or less, and 0 The amount may be 0.50 parts by mass or less, and from the viewpoint of reducing the Hansen distance Ra between the hindered amine light stabilizer (B) and the antioxidant (X), suppressing discoloration of the molded article, and improving the transparency of the molded article, it is preferably 0.001 parts by mass or more and 10.00 parts by mass or less, more preferably 0.01 parts by mass or more and 5.00 parts by mass or less, even more preferably 0.05 parts by mass or more and 2.00 parts by mass or less, even more preferably 0.10 parts by mass or more and 1.00 parts by mass or less, even more preferably 0.20 parts by mass or more and 0.50 parts by mass or less, even more preferably 0.30 parts by mass or more and 0.50 parts by mass or less, and even more preferably 0.35 parts by mass or more and 0.50 parts by mass or less.

[0114] <Hydrophilic agent (Y)> The following describes the hydrophilic agent (Y).

[0115] The hydrophilic agent (Y) may be used alone or in combination of two or more types.

[0116] From the viewpoint of further improving the moisture and heat resistance of the molded article, preferably, the hydrophilic agent (Y) includes a compound having an ester group and a hydroxyl group in its molecular structure.

[0117] (Fatty acid ester (1)) From the viewpoint of further improving the moisture and heat resistance of the molded article, preferably, the compound having an ester group and a hydroxyl group in the molecular structure of this embodiment includes a fatty acid ester of a polyhydric alcohol containing one or more ether groups (hereinafter sometimes referred to as fatty acid ester (1)). The following describes fatty acid esters (1).

[0118] From the viewpoint of further improving the moisture and heat resistance of the molded article, the polyhydric alcohol (hereinafter sometimes referred to as polyhydric alcohol (1)) containing one or more ether groups of fatty acid ester (1) preferably includes one or more selected from the group consisting of diglycerin, triglycerin, tetraglycerin, and sorbitan, and more preferably includes one or two selected from the group consisting of diglycerin and triglycerin. Note that the ether groups of polyhydric alcohol (1) do not include the ether groups in the ester group.

[0119] From the viewpoint of further improving the moisture and heat resistance of the molded article, the fatty acid of the fatty acid ester (1) preferably includes one or more selected from the group consisting of saturated fatty acids such as butanoic acid, pentanoic acid, hexanoic acid, heptanoic acid, octanoic acid, nonanoic acid, capric acid, lauric acid, myristic acid, palmitic acid, and stearic acid; monounsaturated fatty acids such as crotonic acid, myristoleic acid, palmitoleic acid, sapienic acid, oleic acid, elaidic acid, gadolic acid, and eicosenoic acid; diunsaturated fatty acids such as linoleic acid, eicosadienoic acid, and docosadenoic acid; triunsaturated fatty acids such as linolenic acid, pinolenic acid, eleostearic acid, and eicosatrienoic acid; and tetraunsaturated fatty acids such as stearidonic acid, arachidonic acid, and eicosatetraenoic acid, more preferably including unsaturated fatty acids, even more preferably including monounsaturated fatty acids, and even more preferably including oleic acid.

[0120] From the viewpoint of further improving the moisture and heat resistance of the molded article, the fatty acid of the fatty acid ester (1) preferably contains a fatty acid having 8 to 24 carbon atoms, and more preferably contains a fatty acid having 12 to 18 carbon atoms.

[0121] Fatty acid esters (1) are formed when at least one of the multiple hydroxyl groups contained in a polyhydric alcohol (1) is esterified with a fatty acid. For example, in the case of diglycerol fatty acid esters, at least one of the four hydroxyl groups contained in diglycerol is esterified with a fatty acid, and in the case of triglycerol fatty acid esters, at least one of the five hydroxyl groups contained in triglycerol is esterified with a fatty acid. The fatty acid ester (1) includes, for example, one or more selected from the group consisting of monoesters, diesters, and triesters. Examples of fatty acid esters (1) include compounds described in Japanese Patent Publication No. 2006-232714, Japanese Patent Publication No. 2002-275308, Japanese Patent Publication No. Hei 10-165152, and the like.

[0122] When the hydrophilic agent (Y) contains a fatty acid ester (1), and the fatty acid ester (1) contains a diglycerin fatty acid ester, the monoester content, when the total amount of the hydrophilic agent (Y) is taken as 100% by mass, is preferably 60% by mass or more and 99% by mass or less, more preferably 70% by mass or more and 98% by mass or less, even more preferably 80% by mass or more and 95% by mass or less, and even more preferably 85% by mass or more and 95% by mass or less.

[0123] When the hydrophilic agent (Y) contains a fatty acid ester (1), and the fatty acid ester (1) contains a diglycerin fatty acid ester, the diester content, when the total amount of the hydrophilic agent (Y) is taken as 100% by mass, is preferably 1% by mass or more and 40% by mass or less, more preferably 2% by mass or more and 30% by mass or less, even more preferably 5% by mass or more and 20% by mass or less, and even more preferably 7% by mass or more and 15% by mass or less.

[0124] When the hydrophilic agent (Y) contains a fatty acid ester (1), and the fatty acid ester (1) contains a diglycerin fatty acid ester, the total content of monoesters and diesters when the total hydrophilic agent (Y) is considered as 100% by mass is preferably 70% by mass or more and 100% by mass or less, more preferably 80% by mass or more and 100% by mass or less, even more preferably 90% by mass or more and 100% by mass or less, and even more preferably 95% by mass or more and 100% by mass or less.

[0125] When the hydrophilic agent (Y) contains a fatty acid ester (1), and the fatty acid ester (1) contains a diglycerin fatty acid ester, the content of the hydrophilic agent (Y) is preferably 0.001 parts by mass or more, more preferably 0.01 parts by mass or more, even more preferably 0.10 parts by mass or more, even more preferably 0.20 parts by mass or more, and even more preferably 0.50 parts by mass or more, with respect to 100 parts by mass of the cyclic olefin resin (A), from the viewpoint of further improving the moldability and heat resistance, and for example, The amount may be 7.00 parts by mass or less, 5.00 parts by mass or less, or 1.50 parts by mass or less. From the viewpoint of further improving the moisture and heat resistance of the moldability, it is preferably 0.001 parts by mass or more and 7.00 parts by mass or less, more preferably 0.01 parts by mass or more and 5.00 parts by mass or less, even more preferably 0.10 parts by mass or more and 1.50 parts by mass or less, even more preferably 0.20 parts by mass or more and 1.50 parts by mass or less, and even more preferably 0.50 parts by mass or more and 1.50 parts by mass or less.

[0126] When the hydrophilic agent (Y) contains a fatty acid ester (1), and the fatty acid ester (1) contains a triglycerin fatty acid ester, the monoester content, when the total amount of the hydrophilic agent (Y) is taken as 100% by mass, is preferably 5% by mass or more and 70% by mass or less, more preferably 15% by mass or more and 60% by mass or less, even more preferably 25% by mass or more and 50% by mass or less, and even more preferably 30% by mass or more and 45% by mass or less.

[0127] When the hydrophilic agent (Y) contains a fatty acid ester (1) and the fatty acid ester (1) contains a triglyceride fatty acid ester, the content of the diester, when the total amount of the hydrophilic agent (Y) is 100% by mass, is preferably 20% by mass or more and 80% by mass or less, more preferably 30% by mass or more and 70% by mass or less, still more preferably 40% by mass or more and 60% by mass or less, and even more preferably 45% by mass or more and 55% by mass or less.

[0128] When the hydrophilic agent (Y) contains a fatty acid ester (1) and the fatty acid ester (1) contains a triglyceride fatty acid ester, the total content of the monoester and the diester, when the total amount of the hydrophilic agent (Y) is 100% by mass, is preferably 55% by mass or more and 95% by mass or less, more preferably 65% by mass or more and 90% by mass or less, still more preferably 75% by mass or more and 90% by mass or less, and even more preferably 80% by mass or more and 90% by mass or less.

[0129] When the hydrophilic agent (Y) contains a fatty acid ester (1) and the fatty acid ester (1) contains a triglyceride fatty acid ester, from the viewpoint of further improving the moldability and heat and humidity resistance, the content of the hydrophilic agent (Y) is preferably 0.001 part by mass or more, more preferably 0.01 part by mass or more, still more preferably 0.10 part by mass or more, even more preferably 0.50 part by mass or more, and even more preferably 0.80 part by mass or more, based on 100 parts by mass of the cyclic olefin resin (A). And, for example, it may be 10.00 parts by mass or less, 5.00 parts by mass or less, 2.00 parts by mass or less. From the viewpoint of further improving the moldability and heat and humidity resistance, it is preferably 0.001 part by mass or more and 10.00 parts by mass or less, more preferably 0.01 part by mass or more and 5.00 parts by mass or less, still more preferably 0.10 part by mass or more and 2.00 parts by mass or less, even more preferably 0.50 part by mass or more and 2.00 parts by mass or less, and even more preferably 0.80 part by mass or more and 2.00 parts by mass or less.

[0130] (fatty acid ester (2)) From the viewpoint of further improving the moisture and heat resistance of the molded article, preferably, the compound having an ester group and a hydroxyl group in the molecular structure of this embodiment includes one or more selected from the group consisting of fatty acid esters of glycerin and fatty acid esters of pentaerythritol (hereinafter sometimes referred to as fatty acid ester (2)), and more preferably includes a fatty acid ester of pentaerythritol. The following explains fatty acid esters (2).

[0131] From the viewpoint of further improving the moisture and heat resistance of the molded article, the fatty acid of the fatty acid ester (2) preferably includes one or more selected from the group consisting of saturated fatty acids such as butanoic acid, pentanoic acid, hexanoic acid, heptanoic acid, octanoic acid, nonanoic acid, capric acid, lauric acid, myristic acid, palmitic acid, and stearic acid; monounsaturated fatty acids such as crotonic acid, myristoleic acid, palmitoleic acid, sapienic acid, oleic acid, elaidic acid, gadolic acid, and eicosenoic acid; diunsaturated fatty acids such as linoleic acid, eicosadienoic acid, and docosadenoic acid; triunsaturated fatty acids such as linolenic acid, pinolenic acid, eleostearic acid, and eicosatrienoic acid; and tetraunsaturated fatty acids such as stearidonic acid, arachidonic acid, and eicosatetraenoic acid, more preferably saturated fatty acids, and even more preferably stearic acid.

[0132] From the viewpoint of further improving the moisture and heat resistance of the molded article, the fatty acid of the fatty acid ester (2) preferably contains a fatty acid having 8 to 24 carbon atoms, and more preferably contains a fatty acid having 12 to 18 carbon atoms.

[0133] Fatty acid esters (2) are formed in which at least one of the multiple hydroxyl groups contained in glycerol or pentaerythritol is esterified with a fatty acid. For example, in the case of glycerol fatty acid esters, at least one of the three hydroxyl groups contained in glycerol is esterified with a fatty acid, and in the case of pentaerythritol fatty acid esters, at least one of the four hydroxyl groups contained in erythritol is esterified with a fatty acid. The fatty acid ester (2) includes, for example, one or more selected from the group consisting of monoesters, diesters, and triesters.

[0134] When the hydrophilic agent (Y) contains a fatty acid ester (2), the monoester content, when the total amount of the hydrophilic agent (Y) is taken as 100% by mass, is preferably 5% by mass or more and 60% by mass or less, more preferably 15% by mass or more and 50% by mass or less, even more preferably 20% by mass or more and 40% by mass or less, and even more preferably 25% by mass or more and 35% by mass or less.

[0135] When the hydrophilic agent (Y) contains a fatty acid ester (2), the diester content, when the total amount of the hydrophilic agent (Y) is taken as 100% by mass, is preferably 20% by mass or more and 80% by mass or less, more preferably 30% by mass or more and 70% by mass or less, even more preferably 40% by mass or more and 60% by mass or less, and even more preferably 45% by mass or more and 55% by mass or less.

[0136] When the hydrophilic agent (Y) contains a fatty acid ester (2), the total content of monoesters and diesters, when the total amount of the hydrophilic agent (Y) is taken as 100% by mass, is preferably 50% by mass or more and 95% by mass or less, more preferably 60% by mass or more and 95% by mass or less, even more preferably 70% by mass or more and 90% by mass or less, and even more preferably 75% by mass or more and 85% by mass or less.

[0137] When the hydrophilic agent (Y) contains a fatty acid ester (2), the content of the hydrophilic agent (Y) is preferably 0.001 parts by mass or more, more preferably 0.01 parts by mass or more, even more preferably 0.10 parts by mass or more, even more preferably 1.00 parts by mass or more, and even more preferably 1.50 parts by mass or more, with respect to 100 parts by mass of the cyclic olefin resin (A), and may be, for example, 20.00 parts by mass or less, 10.00 parts by mass or less, or 5.00 parts by mass or less, and from the viewpoint of further improving the moldability and heat resistance, preferably 0.001 parts by mass or more and 20.00 parts by mass or less, more preferably 0.01 parts by mass or more and 10.00 parts by mass or less, even more preferably 0.10 parts by mass or more and 5.00 parts by mass or less, even more preferably 1.00 parts by mass or more and 5.00 parts by mass or less, and even more preferably 1.50 parts by mass or more and 5.00 parts by mass or less.

[0138] <Other ingredients> The resin composition of this embodiment may contain optional components other than the cyclic olefin resin (A), hindered amine light stabilizer (B), antioxidant (X), and hydrophilic agent (Y) (hereinafter sometimes referred to as "other components"), as long as they do not impair the good physical properties of the resin composition of this embodiment. Other components of this embodiment include, for example, one or more selected from the group consisting of resins other than cyclic olefin resins (A), light stabilizers other than hindered amine light stabilizers (B), surfactants, weather stabilizers, heat stabilizers, antistatic agents, flame retardants, slip agents, antiblocking agents, antifogging agents, lubricants, dyes, pigments, natural oils, synthetic oils, waxes, and organic or inorganic fillers. The content of other components in the resin composition of this embodiment is appropriate.

[0139] <Method for producing the resin composition of this embodiment> The resin composition of this embodiment is obtained by mixing the components. The order in which the components are mixed is not particularly limited and can be carried out in any way, such as all at once or in stages. The apparatus for mixing the components is also not particularly limited and can be any batch or continuous apparatus capable of stirring and mixing.

[0140] The shape of the resin composition of this embodiment is not particularly limited, and may be, for example, in the form of pellets. The resin composition of this embodiment in the form of pellets can be obtained, for example, by kneading in an extruder, cooling with water, and cutting into pellets.

[0141] <Application> The resin composition of this embodiment is not particularly limited in its use, but it is suitable for use in molded articles because it can suppress the occurrence of black spots in molded articles during continuous molding and improve the heat and humidity resistance of the molded articles.

[0142] 2. Molded body The molded body of this embodiment will be described below.

[0143] The molded article of this embodiment contains the resin composition of this embodiment.

[0144] The content of the resin composition of this embodiment in the molded article of this embodiment, when the total mass of the molded article of this embodiment is set to 100% by mass, is preferably 50% by mass or more, more preferably 70% by mass or more, even more preferably 80% by mass or more, even more preferably 90% by mass or more, even more preferably 95% by mass or more, and may be, for example, 100% by mass or less. Furthermore, from the viewpoint of further suppressing the occurrence of black spots in the molded article during continuous molding and further improving the heat and humidity resistance, it is preferably 50% by mass or more and 100% by mass or less, more preferably 70% by mass or more and 100% by mass or less, even more preferably 80% by mass or more and 100% by mass or less, even more preferably 90% by mass or more and 100% by mass or less, and even more preferably 95% by mass or more and 100% by mass or less.

[0145] The molded article of this embodiment can be obtained by molding the cyclic olefin resin composition of this embodiment into a predetermined shape in a mold. The method for obtaining the molded article by molding the cyclic olefin resin composition of this embodiment is not particularly limited, and known methods can be used. Depending on the application and shape, applicable molding methods include, for example, extrusion molding, injection molding, compression molding, inflation molding, blow molding, extrusion blow molding, injection blow molding, press molding, vacuum molding, powder slush molding, calendering, and foam molding. Among these, injection molding and extrusion molding are preferred from the viewpoint of moldability and productivity, with injection molding being more preferred. Furthermore, molding conditions are appropriately selected depending on the intended use or molding method, but for example, the resin temperature in injection molding is appropriately selected within the range of, for example, 150°C to 400°C, preferably 200°C to 350°C, and more preferably 230°C to 330°C.

[0146] The molded body of this embodiment can be used in various forms such as lens shape, spherical shape, rod shape, plate shape, cylindrical shape, tubular shape, fiber shape, film shape, or sheet shape.

[0147] The applications of the molded articles of this embodiment are not particularly limited, but they can be used, for example, as optical components such as automotive camera lenses and camera lenses for portable devices; optical recording media such as DVDs and CDs; and transparent containers for food and pharmaceuticals.

[0148] The molded article of this embodiment may contain any components other than the cyclic olefin resin (A), hindered amine light stabilizer (B), antioxidant (X), and hydrophilic agent (Y) (hereinafter sometimes referred to as "other components"), as long as they do not impair the good physical properties of the molded article of this embodiment. Other components of this embodiment include, for example, one or more selected from the group consisting of resins other than cyclic olefin resins (A), light stabilizers other than hindered amine light stabilizers (B), surfactants, weather stabilizers, heat stabilizers, antistatic agents, flame retardants, slip agents, antiblocking agents, antifogging agents, lubricants, dyes, pigments, natural oils, synthetic oils, waxes, and organic or inorganic fillers. The content of other components in the molded article of this embodiment is appropriate.

[0149] 3. Optical components The optical components of this embodiment will be described below.

[0150] The optical component of this embodiment includes the molded body of this embodiment.

[0151] The optical components of this embodiment include, for example, one or more selected from the group consisting of sensor lenses, pickup lenses, projector lenses, prisms, fθ lenses, imaging lenses, light guide plates, in-vehicle camera lenses, and camera lenses for portable devices (mobile phones, smartphones, tablets, etc.). Examples of automotive camera lenses and mobile device camera lenses include view camera lenses; sensing camera lenses; light focusing lenses for head-up displays; light diffusing lenses for head-up displays; and lenses for various optical devices such as PC cameras, mobile phone cameras, smartphone cameras, tablet camera cameras, mobile device cameras, digital cameras, and medical device cameras. Other applications not mentioned above include automotive interior panels, automotive lamp lenses, automotive inner lenses, automotive lens protective covers, and automotive light guides.

[0152] Although embodiments of the present invention have been described above, these are merely examples, and various other configurations can be adopted. Furthermore, the present invention is not limited to the embodiments described above, and any modifications, improvements, etc., that can achieve the objectives of the present invention are included in the present invention. [Examples]

[0153] The present invention will now be described in detail with reference to examples, but the present invention is not limited to these examples.

[0154] <Preparation of catalyst> A vanadium catalyst was prepared by diluting VO(OC2H5)Cl2 with cyclohexane. Also, ethylaluminum sesquichloride (Al(C2H5) 1.5 C l1.5 The solution was diluted with cyclohexane to prepare an organoaluminum compound catalyst solution.

[0155] <Polymerization> In a stirred polymerizer, the vanadium catalyst and organoaluminum compound catalyst solution prepared by the above method are used as catalysts to polymerize ethylene and tetracyclo[4.4.0.1 2,5 .1 7,10 A copolymerization reaction of ]-3-dodecene was carried out to obtain a copolymer solution. Here, ethylene was supplied into the polymerizer along with hydrogen gas.

[0156] <Decalcification> Water and an aqueous sodium hydroxide solution were added to the obtained copolymer solution to stop the polymerization reaction and remove the catalyst residue present in the copolymer solution (decalcification). To the decalcified solution, antioxidants (X) of the types listed in Table 1 were added in a manner that the content was 0.4 parts by mass per 100 parts by mass of cyclic olefin resin (A), and the mixture was stirred in a stirring tank for 1 hour.

[0157] <Solvent removal> By adding an antioxidant (X) and mixing the solution, heating it to 180°C and removing the solvent and unreacted monomers, a cyclic olefin resin (A) is obtained, which consists of ethylene and tetracyclo[4.4.0.1 2,5 .1 7,10 A random copolymer with ]-3-dodecene was obtained in a molten state. Here, the glass transition temperature (Tg) of the cyclic olefin resin (A) obtained by the above method was 142°C, and the MFR measured under conditions of 260°C and a load of 2.16 kgf in accordance with ASTM D1238 was 20 g / 10 min. The glass transition temperature (Tg) was determined from the endothermic curve obtained under the following conditions. Measurement device: DSC-7020 (Hitachi High-Tech Science Co., Ltd.) Atmosphere: Under a nitrogen atmosphere Temperature conditions: First, the temperature was raised from room temperature to 200°C at a rate of 10°C / min and held for 5 minutes. Then, the temperature was lowered to -40°C at a rate of 10°C / min and held for 5 minutes. Then, the temperature was raised to 200°C at a rate of 10°C / min.

[0158] <Preparation of resin composition> As a twin-screw extruder, we used one with co-rotating screws, a screw diameter of 44 mmφ, and a vent hole located at L / D=24 from the resin loading section, resulting in an L / D=30 twin-screw extruder. The cyclic olefin resin (A) obtained by the above method and HALS (B) of the type and amount (content per 100 parts by mass of cyclic olefin resin (A)) listed in Table 1 were charged into the resin charging section of the twin-screw extruder. Next, hydrophilic agents (Y) of the type and quantity (content per 100 parts by mass of cyclic olefin resin (A)) listed in Table 1 were charged through the vent hole of the twin-screw extruder. Next, the mixture was melt-kneaded under conditions of a barrel temperature of 250°C, a screw rotation speed of 150 rpm, and a motor power of 30 kW, then water-cooled and cut into pellets to obtain a pelletized resin composition. In Table 1, "-" indicates that HALS(B) and / or hydrophilic agent(Y) were not added. Note that each hydrophilic agent (Y) is a distilled product. The ester ratios of each hydrophilic agent (Y) listed in Table 1 were calculated from the peak area ratios of the gas chromatograms.

[0159] <Hansen distance Ra> The Hansen distance Ra was calculated from the Hansen solubility parameters of each component, which were calculated using the computer software HSPiP (version: 5.2.05), using the following formula. The results are shown in Table 1. The Hansen distance Ra of the cyclic olefin resin (A) and HALS (B) is shown in the "(A)-(B)" column, and the Hansen distance Ra of HALS (B) and antioxidant (X) is shown in the "(B)-(X)" column.

[0160] <Suppression of black spot formation in continuous molding> The pelletized resin composition obtained by the above method was supplied from the hopper of the injection molding machine into the cylinder of the injection molding machine, and injection molding was continuously performed under the following conditions. Injection molding machine: Sumitomo Heavy Industries, Ltd., Product name: SE30DUZ, Screw diameter: 20mmφ Mold temperature: 70℃ Cylinder temperature: Nozzle / C3 / C2 / C1 / Hopper bottom = 280℃ / 295℃ / 290℃ / 280℃ / 80℃ Back pressure: 6 MPa Screw rotation speed: 50 rpm Holding pressure: 25MPa, 6 seconds Molding cycle: 18 seconds / cycle Molded product dimensions: 30mm (height), 30mm (width), 1.0mm (thickness) A sample of the molded body was taken every 500 cycles from the start of continuous molding, and its appearance was observed at 20x magnification using an optical microscope (Olympus, model: SZX16). If a colored foreign object was found in the molded product, and its major axis when approximated as an ellipse was 20 μm or larger, it was judged to be a "black spot occurrence." The number of molded bodies judged to have "black spots" was tallied daily from the start of continuous molding, and the product was judged to be "unacceptable" when the number reached 50 or more. The evaluation was then performed according to the following criteria based on the time until the product was deemed "unacceptable." The results are shown in Table 1. +++: Does not fail after 30 days of continuous molding. ++: Not permitted for continuous molding exceeding 10 days but not exceeding 30 days. +: Not possible for continuous molding of 10 days or less.

[0161] <Heat and moisture resistance> The pelletized resin composition obtained by the above method was supplied from the hopper of the injection molding machine into the cylinder of the injection molding machine, and injection molding was continuously performed under the following conditions. Injection molding machine: Sumitomo Heavy Industries, Ltd., Product name: SE30DUZ, Screw diameter: 20mmφ Mold temperature: 120℃ Cylinder temperature: Nozzle / C3 / C2 / C1 / Hopper bottom = 265℃ / 270℃ / 260℃ / 250℃ / 80℃ Back pressure: 3MPa Screw rotation speed: 30 rpm Molded product dimensions: 65mm (height), 35mm (width), 3.0mm (thickness) The internal haze of the obtained molded body was measured and this was defined as the haze before the environmental test. Next, the obtained molded body was left in an atmosphere of 85°C and 85% relative humidity for 168 hours, then removed and placed in an atmosphere of 23°C and 50% relative humidity. The internal haze was measured 24 hours after removal and this was defined as the haze after the environmental test. The change in haze (Δ-haze) was calculated by subtracting the haze before the environmental test from the haze after the environmental test, and the heat and humidity resistance was evaluated according to the following criteria. The results are shown in Table 1. Internal haze was measured using benzyl alcohol in accordance with JIS K 7136. OK: ΔHaze is 0.5% or less. Failure: ΔHaze exceeds 0.5%

[0162] [Table 1]

[0163] As described above, the resin composition of the example can suppress the occurrence of black spots in the molded body during continuous molding and improve the heat and humidity resistance of the molded body. From this, it can be seen that the resin composition of this embodiment can suppress the occurrence of black spots in the molded body during continuous molding and improve the heat and humidity resistance of the molded body.

Claims

1. The resin composition comprises a cyclic olefin resin (A), a hindered amine light stabilizer (B), an antioxidant (X), and a hydrophilic agent (Y). The Hansen distance Ra between the cyclic olefin resin (A) and the hindered amine light stabilizer (B) is 9.00 or less. A resin composition wherein the weight-average molecular weight Mw of the hindered amine-based light stabilizer (B) is less than 2000.

2. The resin composition according to claim 1, wherein the Hansen distance Ra between the hindered amine-based light stabilizer (B) and the antioxidant (X) is 7.00 or less.

3. The cyclic olefin resin (A) is A repeating unit (a) derived from at least one olefin represented by the following formula (I), A repeating unit (b) derived from one or more cyclic olefin monomers selected from the group consisting of a repeating unit (AA) represented by the following formula (II), a repeating unit (AB) represented by the following formula (III), and a repeating unit (AC) represented by the following formula (IV), The resin composition according to claim 1 or 2, comprising a cyclic olefin copolymer (P1) containing the above. 【Chemistry 1】 (In the above formula (I), R ３００ (This represents a hydrogen atom or a linear or branched hydrocarbon group having 1 to 29 carbon atoms.) 【Chemistry 2】 (In the above formula (II), u is 0 or 1, v is 0 or a positive integer, w is 0 or 1, R ６１ ~R ７８ And R ａ１ and R ｂ１ These may be the same or different from each other, and are a hydrogen atom, a halogen atom, an alkyl group having 1 to 20 carbon atoms, a halogenated alkyl group having 1 to 20 carbon atoms, a cycloalkyl group having 3 to 15 carbon atoms, or an aromatic hydrocarbon group having 6 to 20 carbon atoms, R ７５ ~R ７８ These may be bonded to each other to form a monocycle or polycycle. 【Transformation 3】 (In the formula (III), x and d are integers of 0 or 1 or more, y and z are 0, 1 or 2, and R ８１ ~R ９９ may be the same as or different from each other, and is a hydrogen atom, a halogen atom, an aliphatic hydrocarbon group which is an alkyl group having 1 to 20 carbon atoms or a cycloalkyl group having 3 to 15 carbon atoms, an aromatic hydrocarbon group having 6 to 20 carbon atoms or an alkoxy group, and R ８９ and R ９０ and the carbon atom to which R ９３ is bonded, or the carbon atom to which R ９１ is bonded may be bonded directly or via an alkylene group having 1 to 3 carbon atoms. Further, when y = z = 0, R ９５ and R ９２ or R ９５ and R ９９ may be bonded to each other to form a monocyclic or polycyclic aromatic ring.) 【Chemistry 4】 (In the above formula (IV), R １００ and R １０１ (These elements may be identical or different from each other, and represent hydrogen atoms or hydrocarbon groups having 1 to 5 carbon atoms, where f is an integer between 1 and 18.)

4. The cyclic olefin resin (A) is The repeating unit (AA) is represented by the following formula (II), A repeating unit (C) derived from a cyclic olefin having an aromatic ring, It contains a cyclic olefin copolymer (P2) that includes The aforementioned repeating unit (AA) does not contain an aromatic ring. The resin composition according to any one of claims 1 to 3, wherein the cyclic olefin having the aromatic ring comprises one or more compounds selected from the group consisting of the compound represented by the following formula (C-1), the compound represented by the following formula (C-2), and the compound represented by the following formula (C-3). 【Transformation 5】 (In the above formula (II), u is 0 or 1, v is 0 or a positive integer, w is 0 or 1, R ６１ ~R ７８ And R ａ１ and R ｂ１ These may be the same or different from each other, and are a hydrogen atom, a halogen atom, an alkyl group having 1 to 20 carbon atoms, an alkyl halide having 1 to 20 carbon atoms, or a cycloalkyl group having 3 to 15 carbon atoms, R ７５ ~R ７８ These may be bonded to each other to form a monocycle or polycycle. 【Transformation 6】 (In the above formula (C-1), n ​​and q are independently 0, 1, or 2, and R １ ~R １７ Each of these is independently a hydrogen atom, a halogen atom other than a fluorine atom, or a hydrocarbon group having 1 to 20 carbon atoms which may be substituted with a halogen atom other than a fluorine atom, and R １０ ~R １７ One of them is a bond, and when q = 0, R １０ and R １１ , R １１ and R １２ , R １２ and R １３ , R １３ and R １４ , R １４ and R １５ , R １５ and R １０ They may be bonded to each other to form a monocycle or polycycle, and when q = 1 or 2, R １０ and R １１ , R １１ and R １７ , R １７ and R １７ , R １７ and R １２ , R １２ and R １３ , R １３ and R １４ , R １４ and R １５ , R １５ and R １６ , R １６ and R １６ , R １６ and R １０ These elements may be bonded to each other to form a monocycle or polycycle, and the monocycle or polycycle may have a double bond, and the monocycle or polycycle may be an aromatic ring. 【Transformation 7】 (In the above formula (C-2), n and m are independently 0, 1, or 2, and q is 1, 2, or 3, R １８ ~R ３１ Each of these is independently a hydrogen atom, a halogen atom other than a fluorine atom, or a hydrocarbon group having 1 to 20 carbon atoms which may be substituted with a halogen atom other than a fluorine atom, and when q = 1, R ２８ and R ２９ , R ２９ and R ３０ , R ３０ and R ３１ They may be bonded to each other to form a monocycle or polycycle, and when q = 2 or 3, R ２８ and R ２８ , R ２８ and R ２９ , R ２９ and R ３０ , R ３０ and R ３１ , R ３１ and R ３１ These elements may be bonded to each other to form a monocycle or polycycle, and the monocycle or polycycle may have a double bond, and the monocycle or polycycle may be an aromatic ring. 【Transformation 8】 (In the formula (C-3), q is 1, 2, or 3; R ３２ ~R ３９ are each independently a hydrogen atom, a halogen atom excluding a fluorine atom, or a hydrocarbon group having 1 to 20 carbon atoms which may be substituted with a halogen atom excluding a fluorine atom. When q = 1, R ３６ and R ３７ , R ３７ and R ３８ , R ３８ and R ３９ may be bonded to each other to form a monocyclic or polycyclic ring. When q = 2 or 3, R ３６ and R ３６ , R ３６ and R ３７ , R ３７ and R ３８ , R ３８ and R ３９ , R ３９ and R ３９ may be bonded to each other to form a monocyclic or polycyclic ring. The monocyclic or polycyclic ring may have a double bond, and the monocyclic or polycyclic ring may be an aromatic ring.)

5. The resin composition according to any one of claims 1 to 4, wherein the antioxidant (X) comprises a phenolic antioxidant.

6. The resin composition according to any one of claims 1 to 5, wherein the hydrophilic agent (Y) comprises a compound having an ester group and a hydroxyl group in its molecular structure.

7. The resin composition according to claim 6, wherein the compound having an ester group and a hydroxyl group in the molecular structure includes a fatty acid ester of a polyhydric alcohol containing one or more ether groups.

8. The resin composition according to claim 6 or 7, wherein the compound having an ester group and a hydroxyl group in its molecular structure comprises one or more selected from the group consisting of fatty acid esters of glycerin and fatty acid esters of pentaerythritol.

9. A molded article comprising the resin composition according to any one of claims 1 to 8.

10. An optical component comprising the molded body described in claim 9.

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