Thermoplastic resin and optical component containing the same

Abstract

An object of the present invention is to efficiently manufacture and provide a material having a high refractive index, low birefringence, excellent balance between heat resistance and moldability, low haze, high Charpy impact strength, low water absorption, and a wide high refractive index band. A thermoplastic resin composition comprising: a thermoplastic resin (A) containing units represented by formula (1) and a thermoplastic resin (B) containing units represented by formula (2). {In formula (1), L 1 and L 2 each independently represent a divalent linking group, k and l each independently represent an integer of 0 or more, R 1 、R 2 、R 3 and R 4 each independently represent a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms, and W represents a divalent linking group.}{In formula (2), L 3 and L 4 each independently represent a divalent linking group, m and n each independently represent an integer of 0 or more, R 5 、R 6 、R 7 and R 8 each independently represent a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms.}

Description

Technical Field

[0001] The present invention relates to a novel thermoplastic resin and an optical component formed from the thermoplastic resin, particularly an optical lens. Background Art

[0002] Imaging modules have been used in devices such as smartphones. In the optical systems used in such imaging modules, miniaturization has been continuously pursued. As the optical system is miniaturized, there is a problem of large chromatic aberration in the optical system. Therefore, chromatic aberration is corrected by combining an optical lens with a high refractive index and high dispersion achieved by increasing the refractive index and decreasing the Abbe number and an optical lens with a low refractive index and low dispersion achieved by decreasing the refractive index and increasing the Abbe number.

[0003] Patent Document 1 discloses the following: Even when a polycarbonate resin composition containing a polycarbonate resin having a structural unit represented by formula (M) and a polycarbonate resin having a structural unit represented by formula (N) is kneaded at each ratio, a polycarbonate resin with a low refractive index and a high Abbe number can be obtained without deteriorating the hue and haze.

[0004]

[0005] Patent Document 2 discloses a polycarbonate resin composition obtained by kneading a polycarbonate resin having a structural unit represented by formula (P) and a polycarbonate resin having a structural unit represented by formula (Q), and discloses that the resin composition has a high refractive index, has fluidity suitable for molding, and is not easily optically distorted under low birefringence.

[0006]

[0007] Among them, with the rapid technological innovation in recent years, high refractive index resins have attracted much attention, and further increase in refractive index has been pursued.

[0008] Prior Art Documents

[0009] Patent Documents

[0010] Patent Document 1: International Publication No. 2018 / 181157

[0011] Patent Document 2: International Publication No. 2015 / 166951 Summary of the Invention

[0012] Therefore, an object of the present invention is to efficiently manufacture and provide a material in a high refractive index range that has a high refractive index, low haze, further low birefringence, excellent balance between heat resistance and moldability, high Charpy impact strength, and a wide range showing low water absorption.

[0013] The inventors of the present invention have found that the above problems can be solved by the present invention having the following aspects.

[0014] < >Aspect 1

[0015] A thermoplastic resin composition comprising: a thermoplastic resin (A) containing units represented by formula (1) and a thermoplastic resin (B) containing units represented by formula (2).

[0016]

[0017] {In formula (1), L 1 and L 2 each independently represent a divalent linking group, k and l each independently represent an integer of 0 or more, and R 1 、R 2 、R 3 and R 4 each independently represent a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms, and W represents a divalent linking group.}

[0018]

[0019] {In formula (2), L 3 and L 4 each independently represent a divalent linking group, m and n each independently represent an integer of 0 or more, and R 5 、R 6 、R 7 and R 8 each independently represent a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms.}

[0020] < >Aspect 2

[0021] The thermoplastic resin composition according to Aspect 1, wherein W in the above formula (1) contains formula (3) or formula (4).

[0022]

[0023] {In formula (3), L 5 and L 6 each independently represent a divalent linking group, o and p each independently represent an integer of 0 or more, and R 9 、R 10 、R 11 and R 12 each independently represent a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms.}

[0024]

[0025] {In formula (4), the rings Z are the same or different and represent an aromatic hydrocarbon ring, and L 7 and L8 each independently represents a divalent linking group, q and r each independently represent an integer of 0 or more, and R 13 , R 14 , R 15 , and R 16 each independently represents a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms.}

[0026] {Mode 3}

[0027] The thermoplastic resin composition according to Mode 2, wherein Z in the above formula (4) is a naphthalene ring.

[0028] {Mode 4}

[0029] The thermoplastic resin composition according to any one of Modes 1 to 3, wherein the haze measured at a thickness of 3 mm is 0.5% or less.

[0030] {Mode 5}

[0031] The thermoplastic resin composition according to any one of Modes 1 to 4, wherein the mass ratio (A:B) of the thermoplastic resin (A) to the thermoplastic resin (B) is 1:99 to 99:1.

[0032] {Mode 6}

[0033] The thermoplastic resin composition according to any one of Modes 1 to 5, wherein the refractive index is 1.645 to 1.690.

[0034] {Mode 7}

[0035] The thermoplastic resin composition according to any one of Modes 1 to 6, wherein the orientation birefringence is 4.5×10 -3 or less.

[0036] {Mode 8}

[0037] The thermoplastic resin composition according to any one of Modes 1 to 7, wherein the notched Charpy impact strength is 25 J / m 2 or more.

[0038] {Mode 9}

[0039] The thermoplastic resin composition according to any one of Modes 1 to 8, wherein the thermoplastic resin (A) is a polyester carbonate resin.

[0040] {Mode 10}

[0041] The thermoplastic resin composition according to any one of Modes 1 to 9, wherein the thermoplastic resin (B) is a polyester carbonate resin or a polycarbonate resin.

[0042] "Method 11"

[0043] An optical component comprising the thermoplastic resin composition according to any one of Methods 1 to 10.

[0044] The thermoplastic resin composition of the present invention can efficiently produce a material having a high refractive index, low birefringence, excellent balance between heat resistance and moldability, low haze, high Charpy impact strength, and a wide range of low water absorption in the high refractive index band. Detailed Embodiments

[0045] Hereinafter, the methods for implementing the present invention will be described in detail. However, the present invention is not limited thereto, and various modifications can be made without departing from the gist thereof.

[0046] "Thermoplastic Resin (A)"

[0047] The thermoplastic resin (A) in the present invention contains a structural unit represented by the above formula (1).

[0048] In the above formula (1), R 1 , R 2 , R 3 and R 4 each independently represent a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms. Examples of the hydrocarbon group include an alkyl group, a cycloalkyl group, and an aryl group.

[0049] Examples of the alkyl group include a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, a tert-butyl group, etc., and a methyl group is preferred.

[0050] Examples of the cycloalkyl group include a cyclopropyl group, a cyclobutyl group, a cyclopentyl group, a cyclohexyl group, and a bicyclo[1.1.1]pentyl group, etc.

[0051] Examples of the aryl group include a phenyl group, a tolyl group, a naphthyl group, a xylyl group, etc., and a phenyl group is preferred.

[0052] R 1 to R 4 each independently are preferably a hydrogen atom, a methyl group, or a phenyl group, more preferably a hydrogen atom or a phenyl group, and still more preferably a hydrogen atom.

[0053] In the above formula (1), L 1 and L 2 each independently represent a divalent linking group, and examples thereof include an alkylene group having 1 to 4 carbon atoms, etc. Preferred are a methylene group, an ethylene group, or a propylene group, and more preferred is a methylene group.

[0054] In the above formula (1), k and l each independently represent an integer of 0 or more, preferably represent 0 to 2, and more preferably represent 1.

[0055] In the above formula (1), W represents a divalent linking group, and preferably represents the above formula (3) or the above formula (4).

[0056] In the above formula (1), the 1,1'-binaphthyl skeleton has the effect of reducing birefringence because it increases the refractive index and has a conformation that is perpendicular to the bonding axis connecting the two naphthalene rings.

[0057] In the above formula (3), R 9 , R 10 , R 11 and R 12 each independently represent a hydrogen atom, a hydrocarbon group having 1 to 20 carbon atoms. Examples of the hydrocarbon group include an alkyl group, a cycloalkyl group, and an aryl group.

[0058] Examples of the alkyl group include a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, a tert-butyl group, etc., and a methyl group is preferred.

[0059] Examples of the cycloalkyl group include a cyclopropyl group, a cyclobutyl group, a cyclopentyl group, a cyclohexyl group, and a bicyclo[1.1.1]pentyl group, etc.

[0060] Examples of the aryl group include a phenyl group, a tolyl group, a naphthyl group, a xylyl group, etc., and a phenyl group is preferred.

[0061] R 9 to R 12 each independently are preferably a hydrogen atom, a methyl group, a phenyl group, more preferably a hydrogen atom or a phenyl group, and still more preferably a hydrogen atom.

[0062] In the above formula (3), L 5 and L 6 each independently represent a divalent linking group. Examples include an alkylene group having 1 to 4 carbon atoms, etc. Preferably, it represents an ethylene group or a propylene group, and more preferably represents an ethylene group.

[0063] o and p each independently represent an integer of 0 or more, preferably represent 0 to 2, and more preferably represent 1.

[0064] In the above formula (3), the 1,1'-binaphthyl skeleton has the effect of reducing birefringence because it increases the refractive index and has a conformation that is perpendicular to the bonding axis connecting the two naphthalene rings.

[0065] In the above formula (4), Z, which may be the same or different, represents an aromatic hydrocarbon ring. Examples include a naphthalene ring, a benzene ring, etc., and a naphthalene ring is preferred.

[0066] R 13 , R 14 , R 15 and R 16 each independently represent a hydrogen atom, a hydrocarbon group having 1 to 20 carbon atoms. Examples of the hydrocarbon group include an alkyl group, a cycloalkyl group, and an aryl group.

[0067] Examples of the alkyl group include a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, a tert-butyl group, etc., with a methyl group being preferred.

[0068] Examples of the cycloalkyl group include a cyclopropyl group, a cyclobutyl group, a cyclopentyl group, a cyclohexyl group, a bicyclo[1.1.1]pentyl group, etc.

[0069] Examples of the aryl group include a phenyl group, a tolyl group, a naphthyl group, a xylyl group, etc., with a phenyl group being preferred.

[0070] R 13 ~R 16 Each independently is preferably a hydrogen atom, a methyl group, or a phenyl group, more preferably a hydrogen atom or a phenyl group, and still more preferably a hydrogen atom.

[0071] L 7 and L 8 Each independently represents a divalent linking group, examples of which include an alkylene group having 1 to 4 carbon atoms, etc. Preferably, it represents an ethylene group or a propylene group, and more preferably an ethylene group.

[0072] q and r each independently represent an integer of 0 or more, preferably represent 0 to 2, and more preferably represent 1.

[0073] In the above formula (4), due to the presence of the Cardo structure, it exhibits high heat resistance and has the effect of reducing birefringence.

[0074] The thermoplastic resin (A) may contain the unit represented by the above formula (1) alone, or may contain two or more of the units represented by the above formula (1) in combination. For example, in the above formula (1), a unit in which W is the above formula (3) and a unit in which W is the above formula (4) may be contained together.

[0075] As the thermoplastic resin (A), a polyester resin or a polyester carbonate resin is preferred, and a polyester carbonate resin is more preferred.

[0076] 《Dicarboxylic acid component used in the unit represented by the above formula (1)》

[0077] The dicarboxylic acid component used in the unit represented by the above formula (1) of the thermoplastic resin of the present invention is mainly a compound represented by the formula (a) or its ester-forming derivative.

[0078]

[0079] In the above formula (a) of the dicarboxylic acid component as the raw material of the above formula (1), L 1 、L 2 、k、l、R 1 ~R 4 are the same as those in each of the above formula (1).

[0080] Specifically, examples include 2,2'-bis(carboxymethoxy)-3,3'-dimethyl-1,1'-binaphthalene, 2,2'-bis(carboxymethoxy)-6,6'-dimethyl-1,1'-binaphthalene, 2,2'-bis(carboxymethoxy)-7,7'-dimethyl-1,1'-binaphthalene, 2,2'-bis(carboxymethoxy)-3,3'-diphenyl-1,1'-binaphthalene, 2,2'-bis(carboxymethoxy)-6,6'-diphenyl-1,1'-binaphthalene, 2,2'-bis(carboxymethoxy)-7,7'-diphenyl-1,1'-binaphthalene, 2,2'-bis(carboxymethoxy)-1,1'-binaphthalene, 2,2'-bis(2-carboxyethoxy)-1,1'-binaphthalene, 2,2'-bis(3-carboxypropoxy)-1,1'-binaphthalene, 2,2'-bis(3-carboxy-2-methylpropoxy)-1,1'-binaphthalene, 2,2'-bis(4-carboxyphenylmethoxy)-1,1'-binaphthalene. Among them, 2,2'-bis(carboxymethoxy)-1,1'-binaphthalene, 2,2'-bis(2-carboxyethoxy)-1,1'-binaphthalene, 2,2'-bis(3-carboxypropoxy)-1,1'-binaphthalene, 2,2'-bis(3-carboxy-2-methylpropoxy)-1,1'-binaphthalene, 2,2'-bis(4-carboxyphenylmethoxy)-1,1'-binaphthalene are preferred, and 2,2'-bis(carboxymethoxy)-1,1'-binaphthalene is more preferred.

[0081] These can be used alone or in combination of two or more. In addition, as ester-forming derivatives, esters such as acyl chlorides, methyl esters, ethyl esters, and phenyl esters can also be used.

[0082] 《Diol Component Used in the Unit Represented by the Above Formula (1)》

[0083] As the diol component used in the unit represented by W in the above formula (1) of the thermoplastic resin of the present invention, examples include ethylene glycol, propylene glycol, butylene glycol, pentylene glycol, hexylene glycol, heptylene glycol, octylene glycol, nonylene glycol, tricyclo[5.2.1.0 2,6Decane dimethanol, cyclohexane-1,4-dimethanol, decalin-2,6-dimethanol, norbornane dimethanol, pentacyclopentadecane dimethanol, cyclopentane-1,3-dimethanol, spirodiol, isosorbide, isomannitol, isoidide, hydroquinone, resorcinol, dihydroxynaphthalene, 2,2-bis(4-hydroxyphenyl)propane, 2,2-bis(3-methyl-4-hydroxyphenyl)propane, 1,1-bis(4-hydroxyphenyl)-1-phenylethane, 1,3-bis(2-(4-hydroxyphenyl)-2-propyl)benzene, 1,1-bis(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane, 1,1-bis(4-hydroxyphenyl)cyclohexane, bis(4-hydroxyphenyl)diphenylmethane, 1,1-bis(4-hydroxyphenyl)decane, bis(4-hydroxyphenyl)sulfide, bis(4-hydroxy-3-methylphenyl)sulfide, biphenol, 9,9-bis(4-hydroxyphenyl)fluorene, 9,9-bis(4-hydroxy-3-methylphenyl)fluorene, 9,9-bis(4-hydroxy-3-cyclohexylphenyl)fluorene, 9,9-bis(4-hydroxy-3-phenylphenyl)fluorene, 9,9-bis(4-(2-hydroxyethoxy)phenyl)fluorene, 9,9-bis(4-(2-hydroxyethoxy)-3-methylphenyl)fluorene, 9,9-bis(4-(2-hydroxyethoxy)-3-cyclohexylphenyl)fluorene, 9,9-bis(4-(2-hydroxyethoxy)-3-phenylphenyl)fluorene, bis(4-hydroxyphenyl)sulfone, bis(4-(2-hydroxyethoxy)phenyl)sulfone, 10,10-bis(4-hydroxyphenyl)anthrone, the following formula (b), the following formula (c), wherein, 9,9-bis(4-(2-hydroxyethoxy)phenyl)fluorene, 9,9-bis(4-(2-hydroxyethoxy)-3-methylphenyl)fluorene, formula (b) and formula (c) are preferred, and formula (b) and formula (c) are more preferred.

[0084]

[0085] In the above formula (b) of the diol component, L 5 , L 6 , o, p, R 9 ~R 12 are the same as those in each of the above formula (3).

[0086]

[0087] In the above formula (c) of the diol component, L 7 , L 8 , q, r, R 13 ~R 16 are the same as those in each of the above formula (4).

[0088] Specifically, the above formula (b) preferably selects 2,2'-bis(2-hydroxyethoxy)-1,1'-binaphthalene, 2,2'-bis(2-hydroxyethoxy)-3,3'-diphenyl-1,1'-binaphthalene, 2,2'-bis(2-hydroxyethoxy)-6,6'-diphenyl-1,1'-binaphthalene, 2,2'-bis(2-hydroxyethoxy)-7,7'-diphenyl-1,1'-binaphthalene, 2,2'-bis(2-hydroxyethoxy)-3,3'-dimethyl-1,1'-binaphthalene, 2,2'-bis(2-hydroxyethoxy)-6,6'-dimethyl-1,1'-binaphthalene, 2,2'-bis(2-hydroxyethoxy)-7,7'-dimethyl-1,1'-binaphthalene, 1,1'-bi-2-naphthol, 2,2'-dihydroxy-3,3'-diphenyl-1,1'-binaphthalene, 2,2'-dihydroxy-6,6'-diphenyl-1,1'-binaphthalene, 2,2'-dihydroxy-7,7'-diphenyl-1,1'-binaphthalene, etc. Among them, 2,2'-bis(2-hydroxyethoxy)-1,1'-binaphthalene and 2,2'-bis(2-hydroxyethoxy)-6,6'-diphenyl-1,1'-binaphthalene are preferred, and 2,2'-bis(2-hydroxyethoxy)-1,1'-binaphthalene is further preferred.

[0089] These can be used alone, or two or more of them can be used in combination.

[0090] Specifically, the above formula (c) preferably selects 9,9-bis(6-(2-hydroxyethoxy)-2-naphthyl)-2,7-dimethylfluorene, 9,9-bis(6-(2-hydroxyethoxy)-2-naphthyl)-2,7-diphenylfluorene, 9,9-bis(6-(2-hydroxyethoxy)-2-naphthyl)fluorene, 9,9-bis(6-(3-hydroxypropoxy)-2-naphthyl)-2,7-diphenylfluorene, 9,9-bis(6-(3-hydroxypropoxy)-2-naphthyl)-2,7-dimethylfluorene, 9,9-bis(6-(3-hydroxypropoxy)-2-naphthyl)fluorene, 9,9-bis(6-hydroxy-2-naphthyl)-2,7-diphenylfluorene, 9,9-bis(6-hydroxy-2-naphthyl)-2,7-dimethylfluorene, 9,9-bis(6-hydroxy-2-naphthyl)fluorene, etc. Among them, 9,9-bis(6-(3-hydroxypropoxy)-2-naphthyl)fluorene, 9,9-bis(6-(2-hydroxyethoxy)-2-naphthyl)fluorene, and 9,9-bis(6-hydroxy-2-naphthyl)fluorene are preferred, and 9,9-bis(6-(2-hydroxyethoxy)-2-naphthyl)fluorene is more preferred.

[0091] These can be used alone, or two or more of them can be used in combination.

[0092] 《Copolymerization components other than the above formula (1)》

[0093] The thermoplastic resin (A) of the present invention may contain repeating units other than the repeating unit represented by the above formula (1) within the range where the advantageous effects of the present invention described above can be obtained. The proportion of the structural unit represented by the above formula (1) in the thermoplastic resin (A) of the present invention is preferably 50 mol% or more, more preferably 70 mol% or more. As the repeating units other than the repeating unit represented by the above formula (1), there are polycarbonates, polyesters, and polyester carbonates, and their dicarboxylic acid components and diol components are shown below.

[0094] As the dicarboxylic acid component, there can be mentioned aliphatic dicarboxylic acid components such as malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, methylmalonic acid, ethylmalonic acid, etc., monocyclic aromatic dicarboxylic acid components such as phthalic acid, isophthalic acid, terephthalic acid, etc., polycyclic aromatic dicarboxylic acid components such as 2,6-naphthalenedicarboxylic acid, 2,7-naphthalenedicarboxylic acid, 2,3-naphthalenedicarboxylic acid, 1,4-naphthalenedicarboxylic acid, 1,8-naphthalenedicarboxylic acid, anthracenedicarboxylic acid, phenanthrenedicarboxylic acid, 9,9-bis(carboxymethyl)fluorene, 9,9-bis(2-carboxyethyl)fluorene, 9,9-bis(1-carboxyethyl)fluorene, 9,9-bis(1-carboxypropyl)fluorene, 9,9-bis(2-carboxypropyl)fluorene, 9,9-bis(2-carboxy-1-methylethyl)fluorene, 9,9-bis(2-carboxy-1-methylpropyl)fluorene, 9,9-bis(2-carboxybutyl)fluorene, 9,9-bis(2-carboxy-1-methylbutyl)fluorene, 9,9-bis(5-carboxypentyl)fluorene, 9,9-bis(carboxycyclohexyl)fluorene, etc., and alicyclic dicarboxylic acid components such as 1,4-cyclohexanedicarboxylic acid, 2,6-naphthalenedicarboxylic acid, etc. These can be used alone or in combination of two or more. In addition, as the ester-forming derivatives, esters such as acid chlorides, methyl esters, ethyl esters, phenyl esters, etc. can also be used.

[0095] As the diol component, there can be mentioned ethylene glycol, propylene glycol, butylene glycol, pentylene glycol, hexylene glycol, heptylene glycol, octylene glycol, nonylene glycol, tricyclo[5.2.1.0 2,6Decane dimethanol, cyclohexane-1,4-dimethanol, decalin-2,6-dimethanol, norbornane dimethanol, pentacyclopentadecane dimethanol, cyclopentane-1,3-dimethanol, spiro diol, isosorbide, isomannitol, isoidide, hydroquinone, resorcinol, dihydroxynaphthalene, 2,2-bis(4-hydroxyphenyl)propane, 2,2-bis(3-methyl-4-hydroxyphenyl)propane, 1,1-bis(4-hydroxyphenyl)-1-phenylethane, 1,3-bis(2-(4-hydroxyphenyl)-2-propyl)benzene, 1,1-bis(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane, 1,1-bis(4-hydroxyphenyl)cyclohexane, bis(4-hydroxyphenyl)diphenylmethane, 1,1-bis(4-hydroxyphenyl)decane, bis(4-hydroxyphenyl) sulfide, bis(4-hydroxy-3-methylphenyl) sulfide, biphenol, 9,9-bis(4-hydroxyphenyl)fluorene, 9,9-bis(4-hydroxy-3-methylphenyl)fluorene, 9,9-bis(4-hydroxy-3-cyclohexylphenyl)fluorene, 9,9-bis(4-hydroxy-3-phenylphenyl)fluorene, 9,9-bis(4-(2-hydroxyethoxy)phenyl)fluorene, 9,9-bis(4-(2-hydroxyethoxy)-3-methylphenyl)fluorene, 9,9-bis(4-(2-hydroxyethoxy)-3-cyclohexylphenyl)fluorene, 9,9-bis(4-(2-hydroxyethoxy)-3-phenylphenyl)fluorene, bis(4-hydroxyphenyl)sulfone, bis(4-(2-hydroxyethoxy)phenyl)sulfone, 10,10-bis(4-hydroxyphenyl)anthrone, 2,2'-bis(2-hydroxyethoxy)-1,1'-binaphthalene, 2,2'-bis(2-hydroxyethoxy)-3,3'-diphenyl-1,1'-binaphthalene, 2,2'-bis(2-hydroxyethoxy)-6,6'-diphenyl-1,1'-binaphthalene, 2,2'-bis(2-hydroxyethoxy)-7,7'-diphenyl-1,1'-binaphthalene, 2,2'-bis(2-hydroxyethoxy)-3,3'-dimethyl-1,1'-binaphthalene, 2,2'-bis(2-hydroxyethoxy)-6,6'-dimethyl-1,1'-binaphthalene, 2,2'-bis(2-hydroxyethoxy)-7,7'-dimethyl-1,1'-binaphthalene, 1,1'-bi-2-naphthol, 2,2'-dihydroxy-3,3'-diphenyl-1,1'-binaphthalene, 2,2'-dihydroxy-6,6'-diphenyl-1,1'-binaphthalene, 2,2'-dihydroxy-7,7'-diphenyl-1,1'-binaphthalene, 9,9-bis(4-(2-hydroxyethoxy)-1-naphthyl)fluorene, 9,9-bis(4-(2-hydroxypropoxy)-1-naphthyl)fluorene, 9,9-bis(6-(2-hydroxyethoxy)-2-naphthyl)fluorene, 9,9-bis(6-(2-hydroxypropoxy)-2-naphthyl)fluorene, 9,9-bis(4-hydroxy-1-naphthyl)fluorene, 9,9-bis(6-hydroxy-2-naphthyl)fluorene, etc. These can be used alone or in combination of two or more kinds.

[0096] "Thermoplastic Resin (B)"

[0097] The thermoplastic resin (B) in the present invention contains a structural unit represented by the above formula (2).

[0098] In the above formula (2), R 5 , R 6 , R 7 and R 8 each independently represent a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms. Examples of the hydrocarbon group include an alkyl group, a cycloalkyl group, and an aryl group.

[0099] Examples of the alkyl group include a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, a tert-butyl group, etc., and a methyl group is preferred.

[0100] Examples of the cycloalkyl group include a cyclopropyl group, a cyclobutyl group, a cyclopentyl group, a cyclohexyl group, and a bicyclo[1.1.1]pentyl group, etc.

[0101] Examples of the aryl group include a phenyl group, a tolyl group, a naphthyl group, a xylyl group, etc., and a phenyl group is preferred.

[0102] R 5 to R 8 each independently are preferably a hydrogen atom, a methyl group, or a phenyl group. R 5 and R 6 each independently are a hydrogen atom or a phenyl group, and R 7 and R 8 are further preferably a hydrogen atom.

[0103] In the above formula (2), L 3 and L 4 each independently represent a divalent linking group, and examples thereof include an alkylene group having 1 to 4 carbon atoms, etc. It is preferably an ethylene group or a propylene group, and more preferably an ethylene group.

[0104] In the above formula (2), m and n each independently represent an integer of 0 or more, preferably represent 0 to 2, and more preferably represent 1.

[0105] As the thermoplastic resin (A), a polycarbonate resin or a polyester carbonate resin is preferred.

[0106] "Diol Component Used in the Unit Represented by the Above Formula (2)"

[0107] As the diol component used in the unit represented by the above formula (2) of the thermoplastic resin of the present invention, a raw material represented by the formula (d) is mainly preferably used.

[0108]

[0109] In the above formula (d) of the diol component as the raw material of the above formula (2), L 3 , L4 , m, n, R 5 to R 8 are the same as those in the above formula (2).

[0110] Specifically, 9-bis(4-(hydroxymethoxy)-3-methylphenyl)fluorene, 9,9-bis(4-(hydroxymethoxy)phenyl)fluorene, 9,9-bis(4-(hydroxymethoxy)-3-phenylphenyl)fluorene, 9,9-bis(4-(3-hydroxypropoxy)-3-methylphenyl)fluorene, 9,9-bis(4-(3-hydroxypropoxy)-3-phenylphenyl)fluorene, 9,9-bis(4-(3-hydroxypropoxy)phenyl)fluorene, 9,9-bis(4-(2-hydroxyethoxy)-3-methylphenyl)fluorene, 9,9-bis(4-(2-hydroxyethoxy)-3-phenylphenyl)fluorene, 9,9-bis(4-(2-hydroxyethoxy)phenyl)fluorene can be cited. Among them, 9,9-bis(4-(3-hydroxypropoxy)-3-phenylphenyl)fluorene, 9,9-bis(4-(3-hydroxypropoxy)phenyl)fluorene, 9,9-bis(4-(2-hydroxyethoxy)-3-phenylphenyl)fluorene, 9,9-bis(4-(2-hydroxyethoxy)phenyl)fluorene are preferred, and 9,9-bis(4-(2-hydroxyethoxy)phenyl)fluorene is more preferred.

[0111] 《Copolymerization components other than the above formula (2)》

[0112] The thermoplastic resin (B) of the present invention has a structural unit represented by the above formula (2), and may also contain other structural units within the range that does not impair the effects of the present invention. The proportion of the structural unit represented by the above formula (2) in the thermoplastic resin (B) of the present invention is preferably 70 mol% or more, more preferably 80 mol% or more. As other repeating units, polycarbonate, polyester, and polyester carbonate are preferred, and the dicarboxylic acid components and diol components constituting them are shown below.

[0113] The following shows other dicarboxylic acid components and diol components that may be contained in the thermoplastic resin (B) of the present invention. As the dicarboxylic acid components, aliphatic dicarboxylic acid components such as malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, methylmalonic acid, ethylmalonic acid, etc., monocyclic aromatic dicarboxylic acid components such as phthalic acid, isophthalic acid, terephthalic acid, etc., polycyclic aromatic dicarboxylic acid components such as 2,6-naphthalenedicarboxylic acid, 2,7-naphthalenedicarboxylic acid, 2,3-naphthalenedicarboxylic acid, 1,4-naphthalenedicarboxylic acid, 1,8-naphthalenedicarboxylic acid, anthracenedicarboxylic acid, phenanthrenedicarboxylic acid, 9,9-bis(carboxymethyl)fluorene, 9,9-bis(2-carboxyethyl)fluorene, 9,9-bis(1-carboxyethyl)fluorene, 9,9-bis(1-carboxypropyl)fluorene, 9,9-bis(2-carboxypropyl)fluorene, 9,9-bis(2-carboxy-1-methylethyl)fluorene, 9,9-bis(2-carboxy-1-methylpropyl)fluorene, 9,9-bis(2-carboxybutyl)fluorene, 9,9-bis(2-carboxy-1-methylbutyl)fluorene, 9,9-bis(5-carboxypentyl)fluorene, 9,9-bis(carboxycyclohexyl)fluorene, etc., and alicyclic dicarboxylic acid components such as 1,4-cyclohexanedicarboxylic acid, 2,6-naphthalenedicarboxylic acid, etc. are exemplified. Isophthalic acid, terephthalic acid, 2,6-naphthalenedicarboxylic acid, and 9,9-bis(2-carboxyethyl)fluorene are preferred, and terephthalic acid is more preferred. These can be used alone or in combination of two or more. In addition, as the ester-forming derivatives, esters such as acid chlorides, methyl esters, ethyl esters, and phenyl esters can also be used.

[0114] As the diol components, ethylene glycol, propylene glycol, butylene glycol, pentylene glycol, hexylene glycol, heptylene glycol, octylene glycol, nonylene glycol, tricyclo[5.2.1.0 2,6Decane dimethanol, cyclohexane-1,4-dimethanol, decalin-2,6-dimethanol, norbornane dimethanol, pentacyclopentadecane dimethanol, cyclopentane-1,3-dimethanol, spirodiol, isosorbide, isomannitol, isoidide, hydroquinone, resorcinol, dihydroxynaphthalene, 2,2-bis(4-hydroxyphenyl)propane, 2,2-bis(3-methyl-4-hydroxyphenyl)propane, 1,1-bis(4-hydroxyphenyl)-1-phenylethane, 1,3-bis(2-(4-hydroxyphenyl)-2-propyl)benzene, 1,1-bis(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane, 1,1-bis(4-hydroxyphenyl)cyclohexane, bis(4-hydroxyphenyl)diphenylmethane, 1,1-bis(4-hydroxyphenyl)decane, bis(4-hydroxyphenyl)sulfide, bis(4-hydroxy-3-methylphenyl)sulfide, biphenol, 9,9-bis(4-hydroxyphenyl)fluorene, 9,9-bis(4-hydroxy-3-methylphenyl)fluorene, 9,9-bis(4-hydroxy-3-cyclohexylphenyl)fluorene, 9,9-bis(4-hydroxy-3-phenylphenyl)fluorene, 9,9-bis(4-(2-hydroxyethoxy)phenyl)fluorene, 9,9-bis(4-(2-hydroxyethoxy)-3-methylphenyl)fluorene, 9,9-bis(4-(2-hydroxyethoxy)-3-cyclohexylphenyl)fluorene, 9,9-bis(4-(2-hydroxyethoxy)-3-phenylphenyl)fluorene, bis(4-hydroxyphenyl)sulfone, bis(4-(2-hydroxyethoxy)phenyl)sulfone, 10,10-bis(4-hydroxyphenyl)anthrone, etc., and these can be used alone or in combination of two or more.

[0115] "Manufacturing Method of Thermoplastic Resin (A) and Thermoplastic Resin (B)"

[0116] The thermoplastic resin of the present invention is manufactured by, for example, a method of reacting a carbonate precursor substance such as phosgene or a carbonic acid diester with a glycol component, a method of reacting a dicarboxylic acid or its ester-forming derivative with a glycol component, etc. Specific examples thereof are shown below.

[0117] "Manufacturing Method of Polyester Resin"

[0118] Polyester resins are generally manufactured by the following method: subjecting a glycol component and a dicarboxylic acid component or its ester-forming derivative to an esterification reaction or a transesterification reaction, and then subjecting the resulting reaction product to a polycondensation reaction to form a high molecular weight substance having a desired molecular weight.

[0119] As the polymerization method, an appropriate method can be selected from known methods such as direct polymerization method, melt polymerization methods such as transesterification method, solution polymerization method, interfacial polymerization method, etc.

[0120] When using the interfacial polymerization method, the following method can preferably be selected: A solution (organic phase) obtained by dissolving dicarboxylic acid dichloride in an organic solvent immiscible with water is mixed into an aqueous alkaline solution (aqueous phase) containing an aromatic diol and a polymerization catalyst, and the polymerization reaction is carried out by stirring at a temperature of 50°C or lower, preferably 25°C or lower, for 0.5 to 8 hours.

[0121] As the solvent used in the organic phase, a solvent that is immiscible with water and dissolves the polyester resin of the present invention is preferred. As such a solvent, for example, chlorinated solvents such as dichloromethane, 1,2-dichloroethane, chloroform, and chlorobenzene, and aromatic hydrocarbon solvents such as toluene, benzene, and xylene can preferably be selected. Since it is easy to use in manufacturing, dichloromethane is more preferred.

[0122] As the aqueous alkaline solution used in the aqueous phase, for example, aqueous solutions of sodium hydroxide, potassium hydroxide, sodium carbonate, etc. can preferably be selected.

[0123] The reaction based on the melt polymerization method generally mixes a diol component with a dicarboxylic acid component or its diester, and the reaction is carried out at a temperature preferably of 120 to 350°C, more preferably 150 to 300°C, and further preferably 180 to 270°C. The degree of reduced pressure can be changed stepwise, and finally reaches 0.13 kPa or lower to distill out the generated water, alcohols and other hydroxy compounds outside the system. The reaction time is usually preferably about 1 to 10 hours.

[0124] In addition, in the melt method, in order to increase the polymerization rate, a transesterification catalyst and a polymerization catalyst can be used. As the transesterification catalyst, a transesterification catalyst known per se can be adopted. For example, compounds containing elements such as manganese, magnesium, titanium, zinc, aluminum, calcium, cobalt, sodium, lithium, and lead can preferably be used. Specifically, oxides, acetates, carboxylates, hydrides, alkoxides, halides, carbonates, sulfates, etc. containing these elements can be more preferably selected. Among them, from the viewpoints of the melt stability of the polyester resin, the hue, and less resin insoluble foreign matter, oxides, acetates, alkoxides, etc. of manganese, magnesium, zinc, and titanium are further preferred. These compounds can be used in combination of two or more. As the polymerization catalyst, a polymerization catalyst known per se can be adopted. For example, antimony compounds, titanium compounds, germanium compounds, tin compounds, or aluminum compounds are preferred. As such compounds, for example, oxides, acetates, carboxylates, hydrides, alkoxides, halides, carbonates, sulfates, etc. of antimony, titanium, germanium, tin, and aluminum can be preferably selected. In addition, these compounds can be used in combination of two or more.

[0125] The usage amount of the polymerization catalyst is preferably in the range of 1×10 -8 ~1×10 -3 mol with respect to 1 mol of the total of all monomer units.

[0126] The polyester resin used in the present invention can use a capping agent to adjust the molecular weight and improve the thermal stability. As the capping agent, monofunctional hydroxy compounds, epoxy compounds, oxazoline compounds, isocyanate compounds, carbodiimide compounds, keteneimine compounds, etc. can be preferably selected.

[0127] The polyester resin used in the present invention may contain copolymerization components other than the diol component and the dicarboxylic acid component or their ester-forming derivatives.

[0128] "Method for Manufacturing Polycarbonate Resin"

[0129] Polycarbonate resin is generally manufactured by a method of reacting a carbonate precursor such as a carbonic acid diester with a dihydroxy compound.

[0130] The transesterification reaction using a carbonic acid diester as the carbonate precursor can be carried out by the following method: In an inert gas atmosphere, a specified ratio of the dihydroxy component and the carbonic acid diester are heated and stirred while distilling off the generated alcohol or phenolic compound. The reaction temperature varies depending on the boiling point of the generated alcohol or phenolic compound, etc., and is usually in the range of 120 to 300 °C. The reaction is terminated by distilling off the generated alcohol or phenolic compound under reduced pressure from the initial stage. In addition, a terminal stopper, an antioxidant, etc. can be added as needed.

[0131] As the carbonic acid diester used in the above transesterification reaction, esters such as an aryl group or an aralkyl group having 6 to 12 carbon atoms that can be substituted can be cited. Specifically, diphenyl carbonate, dimethylxylene carbonate, bis(chlorophenyl) carbonate, and m-cresyl carbonate can be exemplified. Among them, diphenyl carbonate is particularly preferred. The usage amount of diphenyl carbonate is preferably 0.95 to 1.10 mol, more preferably 0.98 to 1.04 mol, relative to 1 mol in total of the dihydroxy compound.

[0132] In addition, in order to increase the polymerization rate, a polymerization catalyst can be used in the melt polymerization method. As the above polymerization catalyst, alkali metal compounds, alkaline earth metal compounds, nitrogen-containing compounds, etc. can be cited.

[0133] As such compounds, organic acid salts, inorganic salts, oxides, hydroxides, hydrides, alcoholates, ammonium hydroxide, etc. of alkali metals and alkaline earth metals can be preferably used, and these compounds can be used alone or in combination.

[0134] Examples of the alkali metal compounds include sodium hydroxide, potassium hydroxide, cesium hydroxide, lithium hydroxide, sodium hydrogen carbonate, sodium carbonate, potassium carbonate, cesium carbonate, lithium carbonate, sodium acetate, potassium acetate, cesium acetate, lithium acetate, sodium stearate, potassium stearate, cesium stearate, lithium stearate, sodium borohydride, sodium benzoate, potassium benzoate, cesium benzoate, lithium benzoate, disodium hydrogen phosphate, dipotassium hydrogen phosphate, dilithium hydrogen phosphate, disodium phenylphosphate, disodium salt, dipotassium salt, dicesium salt, dilithium salt of bisphenol A, sodium salt, potassium salt, cesium salt, lithium salt of phenol, etc.

[0135] Examples of the alkaline earth metal compounds include magnesium hydroxide, calcium hydroxide, strontium hydroxide, barium hydroxide, magnesium carbonate, calcium carbonate, strontium carbonate, barium carbonate, magnesium diacetate, calcium diacetate, strontium diacetate, barium diacetate, etc.

[0136] Examples of the nitrogen-containing compounds include ammonium hydroxides having an alkyl group, an aryl group, etc., such as tetramethylammonium hydroxide, tetraethylammonium hydroxide, tetrapropylammonium hydroxide, tetrabutylammonium hydroxide, trimethylbenzylammonium hydroxide. Examples of the bases or basic salts include ammonium borohydrides such as tetramethylammonium borohydride, tetrabutylammonium borohydride, tetrabutylammonium tetraphenylborate, and tetraphenylammonium tetraphenylborate.

[0137] Examples of the other transesterification catalysts include salts of zinc, tin, zirconium, lead, titanium, germanium, antimony, and osmium. For example, zinc acetate, zinc benzoate, zinc 2-ethylhexanoate, tin(II) chloride, tin(IV) chloride, tin(II) acetate, tin(IV) acetate, dibutyltin dilaurate, dibutyltin oxide, dibutyltin dimethoxide, zirconium acetylacetonate, zirconium glycolate, zirconium tetrabutoxide, lead(II) acetate, lead(IV) acetate, titanium(IV) tetrabutoxide, etc. can be used. The catalysts used in International Publication No. 2011 / 010741 and Japanese Patent Application Laid-Open No. 2017-179323 can be used.

[0138] In addition, a catalyst composed of aluminum or its compound and a phosphorus compound can be used. In this case, relative to 1 mol in total of all the monomer units used, it can be 8×10 -5 mol or more, 9×10 -5 mol or more, 1×10 -4 mol or more, and can be used in an amount of 1×10 -3 mol or less, 8×10 -4 mol or less, 6×10 -4 mol or less.

[0139] As the aluminum salt, organic acid salts and inorganic acid salts of aluminum can be cited. As the organic acid salts of aluminum, for example, carboxylates of aluminum can be cited. Specifically, aluminum formate, aluminum acetate, aluminum propionate, aluminum oxalate, aluminum acrylate, aluminum laurate, aluminum stearate, aluminum benzoate, aluminum trichloroacetate, aluminum lactate, aluminum citrate and aluminum salicylate can be cited. As the inorganic acid salts of aluminum, for example, aluminum chloride, aluminum hydroxide, aluminum hydroxychloride, aluminum carbonate, aluminum phosphate and aluminum phosphonate can be cited. As the aluminum chelate, for example, aluminum acetylacetonate, aluminum acetoacetate, aluminum ethyl acetoacetate and aluminum ethyl acetoacetate diisopropoxide can be cited.

[0140] As the phosphorus compound, for example, phosphonic acid-based compounds, hypophosphorous acid-based compounds, phosphine oxide-based compounds, phosphorous acid-based compounds, hypophosphorous acid-based compounds and phosphine-based compounds can be cited. Among them, phosphonic acid-based compounds, hypophosphorous acid-based compounds and phosphine oxide-based compounds can be particularly cited, and phosphonic acid-based compounds can be especially cited.

[0141] The usage amount of these polymerization catalysts is preferably 0.1 μmol to 500 μmol, more preferably 0.5 μmol to 300 μmol, and further preferably 1 μmol to 100 μmol with respect to 1 mol of the dihydroxy component.

[0142] In addition, a catalyst deactivator can also be added in the later stage of the reaction. As the catalyst deactivator used, although known catalyst deactivators can be effectively used, among them, ammonium salts of sulfonic acid are preferred. salt. Tetrabutyl salts such as salts of dodecylbenzenesulfonic acid, and salts of p-toluenesulfonic acid such as tetrabutylammonium p-toluenesulfonate are further preferred.

[0143] In addition, as the ester of sulfonic acid, methyl benzenesulfonate, ethyl benzenesulfonate, butyl benzenesulfonate, octyl benzenesulfonate, phenyl benzenesulfonate, methyl p-toluenesulfonate, ethyl p-toluenesulfonate, butyl p-toluenesulfonate, octyl p-toluenesulfonate, phenyl p-toluenesulfonate, etc. can be preferably used. Among them, tetrabutyl salt is most preferably used.

[0144] Regarding the usage amount of these catalyst deactivators, when using at least one polymerization catalyst selected from alkali metal compounds and / or alkaline earth metal compounds, it can be used in a ratio of preferably 0.5 to 50 mol, more preferably 0.5 to 10 mol, and further preferably 0.8 to 5 mol with respect to 1 mol of the catalyst.

[0145] "Method for Manufacturing Polyester Carbonate Resin"

[0146] Polyester carbonate resins are generally manufactured by a method of polycondensing a carbonate precursor such as a carbonic acid diester and a dicarboxylic acid or its ester-forming derivative with a dihydroxy compound.

[0147] In the reaction of a dihydroxy compound, a dicarboxylic acid or its acid chloride with phosgene, the reaction is carried out in the presence of an acid binder and a solvent in a non-aqueous system. As the acid binder, for example, pyridine, dimethylaminopyridine, tertiary amines, etc. can be used. As the solvent, for example, halogenated hydrocarbons such as dichloromethane and chlorobenzene can be used. As the molecular weight regulator, for example, terminal stoppers such as phenol and p-tert-butylphenol are preferably used. The reaction temperature is usually 0 to 40 °C, and the reaction time is preferably several minutes to 5 hours.

[0148] In the transesterification reaction, a dihydroxy compound, a dicarboxylic acid or its diester and a diaryl carbonate are mixed in an inert gas atmosphere, and the reaction is usually carried out at 120 to 350 °C, preferably 150 to 300 °C, under reduced pressure. The degree of reduced pressure is changed stepwise, and finally reaches below 133 Pa to distill out the generated alcohols out of the system. The reaction time is usually about 1 to 4 hours. In addition, a polymerization catalyst can be used in the transesterification reaction to promote the reaction. As such a polymerization catalyst, an alkali metal compound, an alkaline earth metal compound or a heavy metal compound is preferably used as the main component, and a nitrogen-containing basic compound is further used as the secondary component as needed.

[0149] Examples of the alkali metal compound include sodium hydroxide, potassium hydroxide, lithium hydroxide, sodium bicarbonate, potassium bicarbonate, lithium bicarbonate, sodium carbonate, potassium carbonate, lithium carbonate, sodium acetate, potassium acetate, lithium acetate, sodium stearate, potassium stearate, lithium stearate, sodium salt, potassium salt, lithium salt of bisphenol A, sodium benzoate, potassium benzoate, lithium benzoate, etc. Examples of the alkaline earth metal compound include calcium hydroxide, barium hydroxide, magnesium hydroxide, strontium hydroxide, calcium bicarbonate, barium bicarbonate, magnesium bicarbonate, strontium bicarbonate, calcium carbonate, barium carbonate, magnesium carbonate, strontium carbonate, calcium acetate, barium acetate, magnesium acetate, strontium acetate, calcium stearate, barium stearate, magnesium stearate, strontium stearate, etc.

[0150] Examples of the nitrogen-containing basic compound include tetramethylammonium hydroxide, tetraethylammonium hydroxide, tetrabutylammonium hydroxide, trimethylbenzylammonium hydroxide, trimethylamine, triethylamine, dimethylbenzylamine, triphenylamine, dimethylaminopyridine, etc.

[0151] As other transesterification catalysts, the catalysts cited as transesterification catalysts in the above-mentioned method for manufacturing polycarbonate can be used in the same manner.

[0152] After the polymerization reaction is completed, in order to maintain thermal stability and hydrolysis stability, the catalyst can be removed or deactivated. Generally, a method of deactivating the catalyst by adding a known acidic substance is appropriately implemented. Specifically, as these substances, esters such as butyl benzoate, aromatic sulfonic acids such as p-toluenesulfonic acid, aromatic sulfonic acid esters such as butyl p-toluenesulfonate and hexyl p-toluenesulfonate, phosphoric acids such as phosphorous acid, phosphoric acid, and phosphonic acid, phosphite esters such as triphenyl phosphite, monophenyl phosphite, diphenyl phosphite, diethyl phosphite, di-n-propyl phosphite, di-n-butyl phosphite, di-n-hexyl phosphite, dioctyl phosphite, and monooctyl phosphite, phosphate esters such as triphenyl phosphate, diphenyl phosphate, monophenyl phosphate, dibutyl phosphate, dioctyl phosphate, and monooctyl phosphate, phosphonic acids such as diphenyl phosphonate, dioctyl phosphonate, and dibutyl phosphonate, phosphonate esters such as diethyl phenylphosphonate, phosphines such as triphenylphosphine and bis(diphenylphosphino)ethane, boric acids such as boric acid and phenylboric acid, aromatic sulfonates such as tetrabutyl salts of dodecylbenzenesulfonic acid, organic halides such as stearyl chloride, benzoyl chloride, and p-toluenesulfonyl chloride, alkyl sulfates such as dimethyl sulfate, and organic halides such as benzyl chloride. These deactivators are used in an amount of 0.01 to 50 times mol relative to the amount of the catalyst, and preferably 0.3 to 20 times mol. When the amount is less than 0.01 times mol relative to the amount of the catalyst, the deactivation effect is insufficient, which is not preferred. In addition, when the amount is greater than 50 times mol relative to the amount of the catalyst, the heat resistance decreases and the molded article becomes easily colored, which is not preferred.

[0153] After the catalyst is deactivated, a step of devolatilizing and removing low-boiling compounds in the thermoplastic resin at a pressure of 13.3 to 133 Pa and a temperature of 200 to 320 °C can be provided.

[0154] "Thermoplastic Resin Composition"

[0155] The thermoplastic resin composition of the present invention contains a thermoplastic resin (A) and a thermoplastic resin (B). The thermoplastic resin composition of the present invention may contain other resins within a range that does not impair the effects of the present invention. The total proportion of the above-mentioned thermoplastic resin (A) and thermoplastic resin (B) in the thermoplastic resin composition of the present invention is preferably 70% by mass or more, and more preferably 90% by mass.

[0156] The mass ratio (A:B) of the thermoplastic resin (A) to the thermoplastic resin (B) in the thermoplastic resin composition of the present invention is preferably 1:99 to 99:1, more preferably 20:80 to 99:1, further preferably 30:70 to 99:1, and particularly preferably 60:40 to 90:10.

[0157] If it is within the above range, a thermoplastic resin having a high refractive index, a low Abbe number, and high impact strength can be obtained.

[0158] In the thermoplastic resin composition of the present invention, additives such as a mold release agent, a heat stabilizer, an ultraviolet absorber, a bluing agent, an antistatic agent, a flame retardant, a plasticizer, a filler, and an antioxidant can be appropriately added as needed and used as a resin composition. As specific mold release agents and heat stabilizers, the mold release agents and heat stabilizers described in International Publication No. 2011 / 010741 pamphlet can be preferably selected.

[0159] As a particularly preferred mold release agent, monoglyceryl stearate, tristearin, pentaerythritol tetrastearate, and a mixture of tristearin and stearyl stearate can be preferably used. In addition, when the amount of the above ester in the mold release agent is set to 100% by mass, it is preferably 90% by mass or more, more preferably 95% by mass or more. In addition, as the mold release agent incorporated in the thermoplastic resin composition, it is preferably in the range of 0.005 to 2.0 parts by mass, more preferably in the range of 0.01 to 0.6 parts by mass, and further preferably in the range of 0.02 to 0.5 parts by mass with respect to 100 parts by mass of the thermoplastic resin composition.

[0160] Examples of the heat stabilizer include a phosphorus-based heat stabilizer, a sulfur-based heat stabilizer, and a hindered phenol-based heat stabilizer.

[0161] In addition, as a particularly preferred phosphorus-based heat stabilizer, tris(2,4-di-tert-butylphenyl) phosphite, bis(2,6-di-tert-butyl-4-methylphenyl)pentaerythritol diphosphite, and tetra(2,4-di-tert-butylphenyl)-4,4'-biphenylylene diphosphonate can be used. In addition, as the blending amount of the phosphorus-based heat stabilizer in the thermoplastic resin composition, it is preferably 0.001 to 0.2 parts by mass with respect to 100 parts by mass of the thermoplastic resin composition.

[0162] In addition, as a particularly preferred sulfur-based heat stabilizer, pentaerythritol-tetra(3-laurylthiopropionate) is used. In addition, the content of the sulfur-based heat stabilizer in the thermoplastic resin composition is preferably 0.001 to 0.2 parts by mass with respect to 100 parts by mass of the thermoplastic resin composition.

[0163] In addition, as a preferred hindered phenol-based heat stabilizer, octadecyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate and pentaerythritol-tetra[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] are used.

[0164] As the blending amount of the hindered phenol-based heat stabilizer in the thermoplastic resin composition, it is preferably 0.001 to 0.3 parts by mass with respect to 100 parts by mass of the thermoplastic resin composition.

[0165] The phosphorus-based heat stabilizer and the hindered phenol-based heat stabilizer can also be used in combination.

[0166] As an ultraviolet absorber, at least one ultraviolet absorber selected from benzotriazole-based ultraviolet absorbers, benzophenone-based ultraviolet absorbers, triazine-based ultraviolet absorbers, cyclic imidoester-based ultraviolet absorbers, and cyanoacrylate-based is preferably used.

[0167] Among the benzotriazole-based ultraviolet absorbers, 2-(2-hydroxy-5-tert-octylphenyl)benzotriazole and 2,2'-methylenebis[4-(1,1,3,3-tetramethylbutyl)-6-(2H-benzotriazol-2-yl)phenol] are more preferably used.

[0168] Examples of the benzophenone-based ultraviolet absorber include 2-hydroxy-4-n-dodecyloxydibenzophenone and 2-hydroxy-4-methoxy-2'-carboxydibenzophenone.

[0169] Examples of the triazine-based ultraviolet absorber include 2-(4,6-diphenyl-1,3,5-triazin-2-yl)-5-[(hexyl)oxy]-phenol, 2-(4,6-bis(2,4-dimethylphenyl)-1,3,5-triazin-2-yl)-5-[(octyl)oxy]-phenol, and the like.

[0170] As the cyclic imidoester-based ultraviolet absorber, 2,2'-p-phenylenebis(3,1-benz oxazin-4-one) is particularly preferably used.

[0171] Examples of the cyanoacrylate-based ultraviolet absorber include 1,3-bis-[(2'-cyano-3',3'-diphenylacryloyl)oxy]-2,2-bis[(2-cyano-3,3-diphenylacryloyl)oxy]methyl)propane and 1,3-bis-[(2-cyano-3,3-diphenylacryloyl)oxy]benzene.

[0172] The compounding amount of the ultraviolet absorber is preferably 0.01 to 3.0 parts by mass with respect to 100 parts by mass of the thermoplastic resin composition. As long as it is within the above compounding amount range, sufficient weather resistance can be imparted to the molded article of the thermoplastic resin composition according to the use.

[0173] Examples of antioxidants include triethylene glycol-bis[3-(3-tert-butyl-5-methyl-4-hydroxyphenyl)propionate], 1,6-hexanediol-bis[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], pentaerythritol-tetra[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate], octadecyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate, 1,3,5-trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)benzene, N,N-hexamethylenebis(3,5-di-tert-butyl-4-hydroxyhydrocinnamide), diethyl 3,5-di-tert-butyl-4-hydroxybenzylphosphonate, tris(3,5-di-tert-butyl-4-hydroxybenzyl)isocyanurate, and 3,9-bis{1,1-dimethyl-2-[β-(3-tert-butyl-4-hydroxy-5-methylphenyl)propanoyloxy]ethyl}-2,4,8,10-tetraoxaspiro[5,5]undecane, etc.

[0174] The compounding amount of the antioxidant is preferably 0.50 parts by mass or less, more preferably 0.05 - 0.40 parts by mass, still more preferably 0.05 - 0.20 parts by mass or 0.10 - 0.40 parts by mass, and particularly preferably 0.20 - 0.40 parts by mass, based on 100 parts by mass of the thermoplastic resin composition.

[0175] "Manufacturing Method of Thermoplastic Resin Composition"

[0176] The manufacturing method of the thermoplastic resin composition of the present invention is not particularly limited. For example, it can be manufactured by any of the following methods: a method of mixing the solids of the thermoplastic resin (A) and the thermoplastic resin (B) and kneading them using a kneading machine; a method of adding the solid thermoplastic resin (B) to the molten thermoplastic resin (A) and kneading; a method of adding the solid thermoplastic resin (A) to the solid thermoplastic resin (B) and kneading; a method of mixing the molten thermoplastic resin (A) and the molten thermoplastic resin (B) and kneading.

[0177] The kneading can be either continuous or batch. When the kneading machine is continuous, an extruder is preferably used, and when it is batch, a Labo Plastomill and a kneader are preferably used.

[0178] "Physical Properties of Thermoplastic Resin Composition"

[0179] When the refractive index of the thermoplastic resin composition of the present invention is measured at a temperature of 20 °C and a wavelength of 589 nm, it is 1.645 or more, and may also be 1.650 or more, 1.655 or more, 1.660 or more, 1.665 or more, 1.667 or 1.670 or more, and is 1.690 or less, and may also be 1.685 or less or 1.680 or less. For example, the refractive index of the thermoplastic resin of the present invention is 1.645 to 1.690, preferably 1.650 to 1.690, more preferably 1.655 to 1.690, further preferably 1.660 to 1.690, particularly preferably 1.665 to 1.690, and most preferably 1.667 to 1.685. When the refractive index is above the lower limit, spherical aberration of the optical lens can be reduced, and thus the focal length of the optical lens can be shortened.

[0180] The Abbe number of the thermoplastic resin composition of the present invention may be 10.0 or more, 11.0 or more, 12.0 or more, 13.0 or more, or 14.0 or more, and may also be 30.0 or less, 29.0 or less, 28.0 or less, 27.0 or less, 26.0 or less, or 25.0 or less. For example, the Abbe number of the thermoplastic resin composition of the present invention may be 15.0 to 25.0, 16.0 to 24.0, 17.0 to 23.0, 18.0 to 22.0.

[0181] Here, the Abbe number is calculated using the following formula based on the refractive indices at a temperature of 20 °C, wavelengths of 486.13 nm, 587.56 nm, and 656.27 nm.

[0182] νd = (nd - 1) / (nF - nC)

[0183] nd represents the refractive index at a wavelength of 587.56 nm,

[0184] nF represents the refractive index at a wavelength of 486.13 nm,

[0185] nC represents the refractive index at a wavelength of 656.27 nm.

[0186] The absolute value of the orientation birefringence (Δn) of the thermoplastic resin composition of the present invention is preferably 4.6×10 -3 or less, more preferably 4.4×10 -3 or less, and further preferably 4.2×10 -3 or less. When the orientation birefringence is within the above range, it will not have a great impact on chromatic aberration, and thus the original performance of the optical design can be maintained. The orientation birefringence (Δn) is measured at a wavelength of 589 nm after the cast film with a thickness of 100 μm obtained from the thermoplastic resin is stretched 2-fold at Tg + 10 °C.

[0187] The haze of the thermoplastic resin composition of the present invention at a thickness of 3 mm is preferably 2% or less, more preferably 1% or less, and still more preferably 0.5% or less. When the haze is within the above range, the range of use as various transparent components is not limited, and thus it is preferred.

[0188] When the viscosity-average molecular weight of the thermoplastic resin composition in the present invention is measured by the method described in the examples, it can be 5000 or more, 6000 or more, or 7000 or more, and can also be 25000 or less, 20000 or less, or 15000 or less. For example, the viscosity-average molecular weight of the thermoplastic resin composition of the present invention can be 6000 to 20000, or can be 7000 to 15000.

[0189] The water absorption rate of the thermoplastic resin composition of the present invention after being immersed at 23°C for 24 hours can be 0.01% by mass or more, 0.04% by mass or more, 0.07% by mass or more, 0.10% by mass or more, and can also be 0.30% by mass or less, 0.25% by mass or less, 0.20% by mass or less. For example, the water absorption rate of the thermoplastic resin composition of the present invention is preferably 0.01% by mass to 0.30% by mass, more preferably 0.04% by mass to 0.25% by mass, still more preferably 0.07% by mass to 0.25% by mass, and particularly preferably 0.07% by mass to 0.20% by mass. When the water absorption rate is within the above range, the change in optical properties caused by water absorption is small, and thus it is preferred.

[0190] The glass transition temperature of the thermoplastic resin composition of the present invention can be 130°C or more, 135°C or more, 140°C or more, or 145°C or more, and can also be 170°C or less, 165°C or less, 160°C or less. The glass transition temperature of the thermoplastic resin composition of the present invention is preferably 130°C to 170°C, more preferably 135°C to 165°C, still more preferably 140°C to 160°C, and particularly preferably 145°C to 160°C. When the glass transition temperature is within the above range, the balance between heat resistance and moldability is excellent, and thus it is preferred.

[0191] For the thermoplastic resin composition of the present invention, the value obtained by measuring the Izod impact strength without a notch according to ISO179 is preferably 25 J / m 2 or more, more preferably 27 J / m 2 or more, and particularly preferably 29 J / m 2 or more. It should be noted that when the Izod impact strength without a notch is within the above range, the occurrence of interruption of the gate and runner can be suppressed during continuous molding.

[0192] "Optical Components"

[0193] The optical component of the present invention contains the above-mentioned thermoplastic resin composition. As such an optical component, as long as it is an optical use for which the above-mentioned thermoplastic resin composition is useful, there is no particular limitation, and examples include optical discs, transparent conductive substrates, optical cards, sheets, films, optical fibers, lenses, prisms, optical films, substrates, optical filters, hard coating films, etc.

[0194] In addition, the optical component of the present invention may be composed of a resin composition containing the above-mentioned thermoplastic resin composition, and additives such as heat stabilizers, plasticizers, light stabilizers, polymerization metal deactivators, flame retardants, lubricants, antistatic agents, surfactants, antibacterial agents, ultraviolet absorbers, mold release agents, etc. may be blended according to need in this resin composition.

[0195] "Optical Lens"

[0196] As the optical component of the present invention, an optical lens can be particularly mentioned. As such an optical lens, examples include photographing lenses used in mobile phones, smartphones, tablet terminals, personal computers, digital video cameras, cameras, in-vehicle cameras, surveillance cameras, etc., and sensing detection cameras such as TOF cameras.

[0197] When manufacturing the optical lens of the present invention by injection molding, it is preferably molded under the conditions of a barrel temperature of 230 to 350°C and a mold temperature of 70 to 180°C. It is more preferably molded under the conditions of a barrel temperature of 250 to 300°C and a mold temperature of 80 to 170°C. When the barrel temperature is higher than 350°C, the thermoplastic resin composition decomposes and colors, and when it is lower than 230°C, the melt viscosity is high and it is liable to become difficult to mold. In addition, when the mold temperature is higher than 180°C, it is liable to become difficult to take out the molded sheet formed from the thermoplastic resin composition from the mold. On the other hand, when the mold temperature is less than 70°C, the resin in the mold cures prematurely during molding, making it difficult to control the shape of the molded sheet, or making it difficult to sufficiently transfer the shape imparted by the mold.

[0198] The optical lens of the present invention is suitable for implementing a mode that uses an aspherical lens as needed. Since an aspherical lens can substantially make the spherical aberration zero with one lens, it is not necessary to eliminate the spherical aberration by combining multiple spherical lenses, and weight reduction and reduction of molding costs can be achieved. Therefore, aspherical lenses are particularly useful as camera lenses among optical lenses.

[0199] In addition, due to the high molding fluidity, the thermoplastic resin composition of the present invention is particularly useful as a material for thin-walled, small-sized, and complex-shaped optical lenses. As specific lens dimensions, the thickness of the central portion is 0.05 to 3.0 mm, more preferably 0.05 to 2.0 mm, and further preferably 0.1 to 2.0 mm. In addition, the diameter is 1.0 mm to 20.0 mm, more preferably 1.0 to 10.0 mm, and further preferably 3.0 to 10.0 mm. In addition, as its shape, a meniscus lens with one convex side and one concave side is preferred.

[0200] The lens made of the thermoplastic resin of the present invention is molded by any method such as die molding, cutting, grinding, laser processing, electrical discharge machining, and etching. Among them, die molding is more preferred in terms of manufacturing cost.

[0201] Examples

[0202] The present invention will be described more specifically by the following examples, but the present invention is not limited thereto.

[0203] 《Evaluation Method》

[0204] 〈Refractive Index〉

[0205] A 3-mm thick circular plate of each thermoplastic resin composition is made, cut, and polished, and then the refractive index nd (587.56 nm) is measured using a Kalnew precision refractometer KPR-2000 manufactured by Shimadzu Corporation.

[0206] 〈Abbe Number〉

[0207] The measurement wavelength of the Abbe number is calculated using the following formula from the refractive indices at 486.13 nm, 587.56 nm, and 656.27 nm.

[0208] νd = (nd - 1) / (nF - nC)

[0209] nd represents the refractive index at a wavelength of 587.56 nm,

[0210] nF represents the refractive index at a wavelength of 486.13 nm,

[0211] nC represents the refractive index at a wavelength of 656.27 nm.

[0212] 〈Notched Izod Impact Strength〉

[0213] Using a 4-mm thick prismatic molded sheet obtained by injection molding, the notched Izod impact strength is measured according to ISO179.

[0214] 〈Water Absorption〉

[0215] Using a plate-shaped molded sheet with a thickness of 2 mm obtained by injection molding, measure the water absorption rate after immersion at 23 °C for 24 hours according to ISO62.

[0216] 〈Haze (Hz)〉

[0217] Using a circular plate with a thickness of 3 mm obtained by injection molding, measure the haze using a HazeMeter NDH 2000 manufactured by this Electro-Decoration Industry Co., Ltd.

[0218] 〈Glass transition temperature (Tg)〉

[0219] Measure the glass transition temperature of the obtained thermoplastic resin composition at a heating rate of 20 °C / min using a DSC Discovery DSC25Auto type manufactured by TA Instruments Japan Co., Ltd. The sample is measured with 5 - 10 mg.

[0220] 〈Viscosity-average molecular weight (Mv)〉

[0221] Measure the viscosity-average molecular weight of the thermoplastic resin composition by the following method. Measure the specific viscosity (ηsp) at 20 °C of the solution obtained by dissolving 0.7 g of the thermoplastic resin composition in 100 ml of dichloromethane. Then, use Mv calculated by the following formula as the viscosity-average molecular weight.

[0222] ηsp / c = [η] + 0.45×[η] 2 c

[0223] [η] = 1.23×10 -4 ×Mv 0.83

[0224] ηsp: Specific viscosity

[0225] η: Limiting viscosity

[0226] c: Constant (= 0.7)

[0227] Mv: Viscosity-average molecular weight

[0228] 〈Absolute value of orientation birefringence〉

[0229] After dissolving the thermoplastic resin composition in dichloromethane, cast it onto a glass petri dish and dry it thoroughly to produce a cast film with a thickness of 100 μm. Stretch this film 2-fold at Tg + 10 °C and measure the phase difference (Re) at 589 nm using an ellipsometer M-220 manufactured by JASCO Corporation, and calculate the absolute value of the orientation birefringence (|Δn|) from the following formula.

[0230] |Δn| = |Re / d|

[0231] Δn: Orientation birefringence

[0232] Re: Phase difference (nm)

[0233] d: Thickness (nm)

[0234] [Synthesis Example]

[0235] [Synthesis Example 1] (Manufacture of Thermoplastic Resin (A1))

[0236] 18.1 parts by mass of 2,2'-bis(carboxymethoxy)-1,1'-binaphthalene, 18.9 parts by mass of 9,9-bis[6-(2-hydroxyethoxy)-2-naphthyl]fluorene, 7.5 parts by mass of 2,2'-bis(2-hydroxyethoxy)-1,1'-binaphthalene, 2.4 parts by mass of diphenyl carbonate (hereinafter sometimes abbreviated as DPC), 19.5×10 -3 parts by mass, and 42.7×10 -3 parts by mass of diethyl 3,5-di-tert-butyl-4-hydroxybenzylphosphonate were placed in a reaction vessel equipped with a stirrer and a distillation device. After three nitrogen replacements, the jacket was heated to 200°C to melt the raw materials.

[0237] After complete dissolution, the pressure was reduced to 40 kPa in 20 minutes. Then, the temperature was raised to 245°C, and the pressure was reduced to 0.13 kPa or less, and the polymerization reaction was carried out until the specified stirring torque was reached. After the reaction was completed, the resulting resin was extruded while granulating to obtain pellets of thermoplastic resin (A1). The Mv of the obtained thermoplastic resin (A1) was 8400, and the Tg was 155°C.

[0238] [Synthesis Example 2] (Manufacture of Thermoplastic Resin (B1))

[0239] 36.0 parts by mass of 9,9-bis(4-(2-hydroxyethoxy)phenyl)fluorene, 3.5 parts by mass of dimethyl terephthalate, 13.7 parts by mass of DPC, and 4.3×10 -3 parts by mass were placed in a reaction vessel equipped with a stirrer and a distillation device. After three nitrogen replacements, the jacket was heated to 200°C to melt the raw materials.

[0240] After complete dissolution, the pressure was reduced to 80 kPa in 20 minutes. Then, the temperature was raised to 260°C, and the pressure was reduced to 0.13 kPa or less, and the polymerization reaction was carried out until the specified stirring torque was reached. After the reaction was completed, the resulting resin was extruded while granulating to obtain pellets of thermoplastic resin (B1). The Mv of the obtained thermoplastic resin (B1) was 10100, and the Tg was 149°C.

[0241] [Synthesis Example 3] (Manufacture of Thermoplastic Resin (B2))

[0242] 43.9 parts by mass of 9,9-bis(4-(2-hydroxyethoxy)phenyl)fluorene, 22.3 parts by mass of DPC, and 6.7×10 -5 parts by mass were charged into a reaction kettle equipped with a stirrer and a distillation device. After three nitrogen replacements, the jacket was heated to 200 °C to melt the raw materials.

[0243] After complete dissolution, the pressure was reduced to 80 kPa in 20 minutes. Thereafter, the temperature was raised to 260 °C, the pressure was reduced to 0.13 kPa, and the polymerization reaction was carried out until a specified stirring torque was reached. After the reaction was completed, the resulting resin was drawn out while pelletizing to obtain pellets of the thermoplastic resin (B2). The Mv of the obtained thermoplastic resin (B2) was 9400, and the Tg was 142 °C.

[0244] <Example 1>

[0245] 23.0 parts by mass of the thermoplastic resin (A1) produced in Synthesis Example 1 and 77.0 parts by mass of the thermoplastic resin (B1) produced in Synthesis Example 2 were thoroughly mixed, and the molten thermoplastic resin (A1) and thermoplastic resin (B1) were kneaded and pelletized at 270 °C and a vent hole pressure of 30 mmHg using an extruder (TEX30α 30 mmφ twin-screw extruder manufactured by Japan Steel Works, Ltd.) to obtain mixed pellets. The Tg of the pellets was 151 °C, and there was a single peak in the DSC measurement. In addition, the Mv of the pellets was 9700. The pellets were injection-molded to obtain a plate-shaped molded sheet with a thickness of 2 mm, a circular plate with a thickness of 3 mm, and a prismatic molded sheet with a thickness of 4 mm. The molded body was transparent. The evaluation results are shown in Table 1.

[0246] <Example 2>

[0247] 44.0 parts by mass of the thermoplastic resin (A1) produced in Synthesis Example 1 and 56.0 parts by mass of the thermoplastic resin (B1) produced in Synthesis Example 2 were thoroughly mixed, and the molten thermoplastic resin (A1) and thermoplastic resin (B1) were kneaded and pelletized at 270 °C and a vent hole pressure of 30 mmHg using an extruder (TEX30α 30 mmφ twin-screw extruder manufactured by Japan Steel Works, Ltd.) to obtain mixed pellets. The Tg of the pellets was 152 °C, and there was a single peak in the DSC measurement. In addition, the Mv of the pellets was 9400. The pellets were injection-molded to obtain a plate-shaped molded sheet with a thickness of 2 mm, a circular plate with a thickness of 3 mm, and a prismatic molded sheet with a thickness of 4 mm. The molded body was transparent. The evaluation results are shown in Table 1.

[0248] <Example 3>

[0249] 64.0 parts by mass of the thermoplastic resin (A1) produced in Synthesis Example 1 and 36.0 parts by mass of the thermoplastic resin (B1) produced in Synthesis Example 2 were thoroughly mixed, and the molten thermoplastic resin (A1) and thermoplastic resin (B1) were kneaded and pelletized at 270 °C and a vent hole pressure of 30 mmHg using an extruder (TEX30α 30 mmφ twin-screw extruder manufactured by Japan Steel Works, Ltd.) to obtain mixed pellets. The Tg of the pellets was 153 °C, and there was a single peak in the DSC measurement. In addition, the Mv of the pellets was 9000. The pellets were injection molded to obtain a plate-shaped molded sheet with a thickness of 2 mm, a circular plate with a thickness of 3 mm, and a prismatic molded sheet with a thickness of 4 mm. The molded body was transparent. The evaluation results are shown in Table 1.

[0250] <Example 4>

[0251] 86.0 parts by mass of the thermoplastic resin (A1) produced in Synthesis Example 1 and 14.0 parts by mass of the thermoplastic resin (B1) produced in Synthesis Example 2 were thoroughly mixed, and the molten thermoplastic resin (A1) and thermoplastic resin (B1) were kneaded and pelletized at 270 °C and a vent hole pressure of 30 mmHg using an extruder (TEX30α 30 mmφ twin-screw extruder manufactured by Japan Steel Works, Ltd.) to obtain mixed pellets. The Tg of the pellets was 154 °C, and there was a single peak in the DSC measurement. In addition, the Mv of the pellets was 8600. The pellets were injection molded to obtain a plate-shaped molded sheet with a thickness of 2 mm, a circular plate with a thickness of 3 mm, and a prismatic molded sheet with a thickness of 4 mm. The molded body was transparent. The evaluation results are shown in Table 1.

[0252] <Example 5>

[0253] 95.0 parts by mass of the thermoplastic resin (A1) produced in Synthesis Example 1 and 5.0 parts by mass of the thermoplastic resin (B1) produced in Synthesis Example 2 were thoroughly mixed, and the molten thermoplastic resin (A1) and thermoplastic resin (B1) were kneaded and pelletized at 270 °C and a vent hole pressure of 30 mmHg using an extruder (TEX30α 30 mmφ twin-screw extruder manufactured by Japan Steel Works, Ltd.) to obtain mixed pellets. The Tg of the pellets was 155 °C, and there was a single peak in the DSC measurement. In addition, the Mv of the pellets was 8500. The pellets were injection molded to obtain a plate-shaped molded sheet with a thickness of 2 mm, a circular plate with a thickness of 3 mm, and a prismatic molded sheet with a thickness of 4 mm. The molded body was transparent. The evaluation results are shown in Table 1.

[0254] <Example 6>

[0255] 44.0 parts by mass of the thermoplastic resin (A1) produced in Synthesis Example 1 and 56.0 parts by mass of the thermoplastic resin (B2) produced in Synthesis Example 3 were thoroughly mixed, and the molten thermoplastic resin (A1) and thermoplastic resin (B2) were kneaded and pelletized at 270 °C and a vent hole pressure of 30 mmHg using an extruder (TEX30α 30 mmφ twin-screw extruder manufactured by Japan Steel Works, Ltd.) to obtain mixed pellets. The Tg of the pellets was 148 °C, and there was a single peak in the DSC measurement. In addition, the Mv of the pellets was 8800. The pellets were injection-molded to obtain a plate-shaped molded sheet with a thickness of 2 mm, a circular plate with a thickness of 3 mm, and a prismatic molded sheet with a thickness of 4 mm. The molded body was transparent. The evaluation results are shown in Table 1.

[0256] <Example 7>

[0257] 74.0 parts by mass of the thermoplastic resin (A1) produced in Synthesis Example 1 and 26.0 parts by mass of the thermoplastic resin (B2) produced in Synthesis Example 3 were thoroughly mixed, and the molten thermoplastic resin (A1) and thermoplastic resin (B2) were kneaded and pelletized at 270 °C and a vent hole pressure of 30 mmHg using an extruder (TEX30α 30 mmφ twin-screw extruder manufactured by Japan Steel Works, Ltd.) to obtain mixed pellets. The Tg of the pellets was 152 °C, and there was a single peak in the DSC measurement. In addition, the Mv of the pellets was 8600. The pellets were injection-molded to obtain a plate-shaped molded sheet with a thickness of 2 mm, a circular plate with a thickness of 3 mm, and a prismatic molded sheet with a thickness of 4 mm. The molded body was transparent. The evaluation results are shown in Table 1.

[0258] <Comparative Example 1>

[0259] The pellets produced in Synthesis Example 1 were injection-molded to obtain a plate-shaped molded sheet with a thickness of 2 mm, a circular plate with a thickness of 3 mm, and a prismatic molded sheet with a thickness of 4 mm. The molded body was transparent. The evaluation results are shown in Table 1.

[0260] <Comparative Example 2>

[0261] The pellets produced in Synthesis Example 2 were injection-molded to obtain a plate-shaped molded sheet with a thickness of 2 mm, a circular plate with a thickness of 3 mm, and a prismatic molded sheet with a thickness of 4 mm. The molded body was transparent. The evaluation results are shown in Table 1.

[0262] <Comparative Example 3>

[0263] The pellets produced in Synthesis Example 3 were injection-molded to obtain a plate-shaped molded sheet with a thickness of 2 mm, a circular plate with a thickness of 3 mm, and a prismatic molded sheet with a thickness of 4 mm. The molded body was transparent. The evaluation results are shown in Table 1.

[0264] <Comparative Example 4>

[0265] Pellets of polycarbonate resin "AD-5503" (manufactured by Teijin Limited) composed of bisphenol A polycarbonate resin were injection molded to obtain plate-shaped molded sheets with a thickness of 2 mm, circular plates with a thickness of 3 mm, and prismatic molded sheets with a thickness of 4 mm. The molded bodies were transparent. The evaluation results are shown in Table 1.

[0266] 〈Comparative Example 5〉

[0267] 50.0 parts by mass of the thermoplastic resin (A1) pellets produced in Synthesis Example 1 and 50.0 parts by mass of the AD-5503 pellets were thoroughly mixed, and the molten thermoplastic resin (A1) and AD-5503 were kneaded and pelletized at 270 °C and a vent hole pressure of 30 mmHg using an extruder (TEX30α 30 mmφ twin-screw extruder manufactured by Japan Steel Works, Ltd.) to obtain mixed pellets. The pellets became turbid.

[0268] The evaluation results are shown in Table 1.

[0269]

[0270] Industrial Applicability

[0271] The thermoplastic resin of the present invention can be used for optical materials and can be used for optical components such as optical lenses, prisms, optical discs, transparent conductive substrates, optical cards, sheets, films, optical fibers, optical films, optical filters, and hard coating films, and is particularly useful in optical lenses.

Claims

1. A thermoplastic resin composition comprising: a thermoplastic resin (A) containing units represented by formula (1) and a thermoplastic resin (B) containing units represented by formula (2). In formula (1), L 1 and L 2 each independently represent an alkylene group having 1 to 4 carbon atoms, k and l each independently represent an integer of 0 or more, R 1 , R 2 , R 3 and R 4 each independently represent a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms, and W contains formula (3) or formula (4). In formula (3), L 5 and L 6 each independently represent an alkylene group having 1 to 4 carbon atoms, o and p each independently represent an integer of 0 or more, R 9 , R 10 , R 11 and R 12 each independently represent a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms, In formula (4), the rings Z are the same or different and represent aromatic hydrocarbon rings, L 7 and L 8 each independently represent an alkylene group having 1 to 4 carbon atoms, q and r each independently represent an integer of 0 or more, and R 13 , R 14 , R 15 and R 16 each independently represent a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms. In formula (2), L 3 and L 4 each independently represent an alkylene group having 1 to 4 carbon atoms, m and n each independently represent an integer of 0 or more, and R 5 , R 6 , R 7 and R 8 each independently represent a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms. The thermoplastic resin (A) is a polyester resin or a polyester carbonate resin. The thermoplastic resin (B) is a polyester carbonate resin or a polycarbonate resin. The thermoplastic resin (A) and the thermoplastic resin (B) are different. The mass ratio of the thermoplastic resin (A) to the thermoplastic resin (B), i.e., A:B, is from 20:80 to 99:

1.

2. The thermoplastic resin composition according to claim 1, wherein, Z in formula (4) is a naphthalene ring.

3. The thermoplastic resin composition according to claim 1 or 2, wherein, The haze measured at a thickness of 3 mm is 0.5% or less.

4. The thermoplastic resin composition according to claim 1 or 2, wherein The refractive index measured at a thickness of 3 mm and a wavelength of 587.56 nm is from 1.645 to 1.

690.

5. The thermoplastic resin composition according to claim 1 or 2, wherein After the cast film with a thickness of 100 μm obtained from the thermoplastic resin composition is stretched 2-fold at Tg + 10°C, the orientation birefringence measured at a wavelength of 589 nm is 4.5×10 -3 or less.

6. The thermoplastic resin composition according to claim 1 or 2, wherein, The unnotched Charpy impact strength measured at a thickness of 4 mm and in accordance with ISO 179 is 25 J / m 2 or more.

7. The thermoplastic resin composition according to claim 1 or 2, wherein The thermoplastic resin (A) is a polyester carbonate resin.

8. An optical component comprising the thermoplastic resin composition according to any one of claims 1 to 7.

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