JP2006131660A - Polycarbonate resin composition and retardation film - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a polycarbonate resin composition having desired chromatic dispersion characteristics and a low photoelastic coefficient, highly transparent and excellent in melt processability, and to provide a retardation film consisting of it. <P>SOLUTION: The aromatic polycarbonate resin composition is obtained by incorporating, based on 100 pts.wt. of (A), an aromatic polycarbonate copolymer consisting of a repeating unit (A1) represented by, for example, formula [7] and a repeating unit (A2) represented by, for example, formula [8] and having, regarding the ratio [(A1):(A2)] of the unit (A1) to the unit (A2), a molar ratio in the range of 5:95-95:5, (B) 2-95 pts.wt. of a polyether ester resin, and (C) 4-95 pts.wt. of a maleimide-based (co)polymer. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

The present invention relates to a polycarbonate resin composition having desired wavelength dispersion characteristics and a low photoelastic coefficient, excellent transparency and melt processability, and a retardation film comprising the same.
Such a retardation film is suitably used for, for example, a liquid crystal display device, an optical pickup used in a recording device, an optical device such as an optical recording medium, a light emitting element, an optical arithmetic element, an optical communication element, and a touch panel.

In general, a retardation film is used in a display device such as a liquid crystal display device, and has functions such as color compensation, viewing angle expansion, and antireflection. As the material of the retardation film, generally used are polycarbonates obtained by polycondensation of bisphenol A, polyether sulfone, polysulfone, polyvinyl alcohol, and thermoplastic polymers such as norbornene resin.
For example, in a super twist nematic (STN) mode liquid crystal display device, the retardation film is usually used for the purpose of color compensation and widening the viewing angle. The following are known as the retardation film.

For example, a retardation film made of a resin in which a polymer that generates positive birefringence and a polymer that generates negative birefringence is mixed is described. Specifically, a film formed by mixing poly (2,6 dimethyl-1,4 phenylene oxide) and polystyrene or polyvinyl chloride and polymethyl methacrylate is uniaxially stretched and has a small viewing angle dependency. It is described that a phase difference film was obtained. (For example, see Patent Document 1)
Further, it is described that a polycarbonate resin film having a fluorene structural unit is obtained by a cast film method and has a high refractive index and low birefringence. (For example, see Patent Document 2)

Such a polycarbonate resin having a fluorene-based bisphenol skeleton has a problem that when it is melt-processed, a gel is easily generated due to decomposition because of its high melting temperature. In addition, since it has a high Tg (glass transition temperature), it requires a high temperature for film stretching and the like, and requires special processing equipment different from the conventional one, so that the workability is not always sufficient. I can't say that.
In addition, in a reflective liquid crystal display device, particularly a reflective liquid crystal display device using only one polarizing plate, the retardation film is optically designed to exhibit a function of generating circularly polarized light in combination with the polarizing plate. There may be.

  In such a liquid crystal display device, the optical design of the retardation film is usually performed in order to optimize the optical characteristics of the entire device. However, since the wavelength dispersion characteristic of retardation, which is one of optical characteristics, is almost determined by the material constituting the retardation film, usable materials are limited. In general, polymers are not compatible with each other, and therefore, when they are mixed, they are phase-separated. Therefore, when the obtained mixture is optically observed, the haze is high and is not suitable for a retardation film. Therefore, practical materials are limited, and there are very few combinations of polymers compatible with each other, such as poly (2,6 dimethyl-1,4 phenylene oxide) and polystyrene or polyvinyl chloride and polymethyl methacrylate.

  For this reason, it is difficult to perform optical design to match the wavelength dispersion of the retardation of the retardation film with the wavelength dispersion of the retardation of the liquid crystal cell because the types of polymer materials that can be used are limited. In addition, in order to provide various retardation films having the wavelength dispersion characteristics of retardation required by many liquid crystal display device manufacturers, the retardation film manufacturer possesses a very large number of materials and forms films. There was a problem that I had to think about what to do. Furthermore, the above-described compatible polymer combination is a combination of different types of polymers, but the types are limited, and there are problems in terms of thermal durability and productivity.

The main object of the present invention is to provide a polycarbonate resin composition having a low photoelastic coefficient, high transparency, and excellent melt processability.
Another object of the present invention is to provide a retardation film melt-molded from the same kind of polymer.
A further object of the present invention is to provide an optical component having excellent optical characteristics.

JP-A-4-194902 JP 2001-253960 A

An object of the present invention is to solve these problems.
That is, an object of the present invention is to provide a polycarbonate resin composition having desired wavelength dispersion characteristics and a low photoelastic coefficient, and having excellent transparency and melt processability, and a retardation film comprising the same.

  As a result of intensive studies, the inventor has obtained a desired wavelength dispersion characteristic by mixing an appropriate amount of a specific polyetherester resin and a maleimide (co) polymer into a special polycarbonate, thereby reducing the photoelastic coefficient, The present invention has been found by providing excellent transparency and excellent melt processability.

［式中、Ｒ¹〜Ｒ⁴は夫々独立して水素原子、炭素原子数１〜９の芳香族基を含んでもよい炭化水素基、またはハロゲン原子である。］で表される繰り返し単位（Ａ１）及び下記一般式［２］

［式中、Ｒ⁵〜Ｒ⁸は夫々独立して水素原子、炭素原子数１〜９の芳香族基を含んでもよい炭化水素基又はハロゲン原子であり、Ｗは単結合、炭素原子数１〜２０の芳香族基を含んでもよい炭化水素基、Ｏ、Ｓ、ＳＯ、ＳＯ_２、ＣＯ又はＣＯＯ基である。］
で表される繰り返し単位（Ａ２）よりなり、全カーボネート繰り返し単位における単位（Ａ１）と単位（Ａ２）の割合がモル比で（Ａ１）：（Ａ２）＝５：９５〜９５：５の範囲である芳香族ポリカーボネート共重合体１００重量部に対して（Ｂ）ポリエーテルエステル樹脂２〜９５重量部、（Ｃ）マレイミド系（共）重合体４〜９５重量部を配合して得られる芳香族ポリカーボネート樹脂組成物及びそれからなる位相差フィルムである。 That is, the present invention
(A) The following general formula [1]

[Wherein, R ^{1 to} R ⁴ each independently represents a hydrogen atom, a hydrocarbon group which may contain an aromatic group having 1 to 9 carbon atoms, or a halogen atom. ] The repeating unit (A1) represented by the following general formula [2]

[Wherein, R ^{5 to} R ⁸ are each independently a hydrogen atom, a hydrocarbon group or a halogen atom which may contain an aromatic group having 1 to 9 carbon atoms, and W is a single bond, having 1 to 1 carbon atoms. A hydrocarbon group optionally containing 20 aromatic groups, an O, S, SO, SO ₂ , CO or COO group. ]
In the range of (A1) :( A2) = 5: 95 to 95: 5, the ratio of units (A1) to units (A2) in all carbonate repeating units is (A1) :( A2) = 5: 95 to 95: 5. Aromatic polycarbonate obtained by blending 2 to 95 parts by weight of (B) polyetherester resin and 4 to 95 parts by weight of (C) maleimide (co) polymer with respect to 100 parts by weight of certain aromatic polycarbonate copolymer A resin composition and a retardation film comprising the same.

In addition, it is preferable that said retardation film satisfies the following formula, when the phase difference in wavelength 450nm and 550nm is set to R (450) and R (550), respectively.
R (450) / R (550) ≦ 1

Hereinafter, the present invention will be described in detail.
[Polycarbonate copolymer]
In the polycarbonate copolymer (A) of the present invention, as the aromatic dihydroxy component constituting the polycarbonate copolymer (A), the ratio of the fluorene-based bisphenol represented by the following formula [3] is preferably 5 to 95 mol% of the total aromatic dihydroxy component, preferably Is 10 to 95 mol%, more preferably 30 to 85 mol%. If it is less than 5 mol%, it is not preferable because it is an unsatisfactory property as an optical material which is the object of the present invention. The fluorene-based bisphenol is preferably 9,9-bis (4-hydroxy-3-methylphenyl) fluorene.

［式中、Ｒ¹〜Ｒ⁴は夫々独立して水素原子、炭素原子数１〜９の芳香族基を含んでもよい炭化水素基、またはハロゲン原子である。］

[Wherein, R ^{1 to} R ⁴ each independently represents a hydrogen atom, a hydrocarbon group which may contain an aromatic group having 1 to 9 carbon atoms, or a halogen atom. ]

  The 9,9-bis (4-hydroxy-3-methylphenyl) fluorene has a b value of preferably 6.0 or less, more preferably 5. measured by measuring a solution of 10 g in 50 ml of ethanol at an optical path length of 30 mm. 5 or less, more preferably 5.0 or less. When the b value is within the above range, a molded product formed from the obtained polycarbonate copolymer has a favorable hue and high strength, and a stretched film characteristic is also preferable.

  The 9,9-bis (4-hydroxy-3-methylphenyl) fluorene is usually obtained by the reaction of o-cresol and fluorenone. The 9,9-bis (4-hydroxy-3-methylphenyl) fluorene having the specific b value can be obtained by performing a specific treatment to remove impurities. Specifically, after the reaction between o-cresol and fluorenone, unreacted o-cresol is distilled off, and the residue is dissolved in an alcohol, ketone, or benzene derivative solvent, and activated clay or activated carbon is added thereto. In addition, after filtration, 9,9-bis (4-hydroxy-3-methylphenyl) fluorene purified by filtering the product crystallized from the filtrate can be obtained. Examples of impurities to be removed include 2,4′-dihydroxy form, 2,2′-dihydroxy form and impurities whose structure is unknown. The alcohol solvent used for such purification is preferably a lower alcohol such as methanol, ethanol, propanol or butanol, and the ketone solvent is preferably a lower aliphatic ketone such as acetone, methyl ethyl ketone, methyl isopropyl ketone or cyclohexanone and a mixture thereof. As the benzene derivative solvent, toluene, xylene, benzene and a mixture thereof are preferable. The amount of the solvent used is sufficient if the fluorene compound is sufficiently dissolved, and is usually about 2 to 10 times the amount of the fluorene compound. As the activated clay, a commercially available powdery or granular silica-alumina main component is used. Further, as the activated carbon, commercially available powdery or granular materials are used.

  Other dihydroxy components used in the polycarbonate copolymer of the present invention may be those usually used as a dihydroxy component of an aromatic polycarbonate, and are represented by the following formula [4].

［式中、Ｒ⁵〜Ｒ⁸は夫々独立して水素原子、炭素原子数１〜９の芳香族基を含んでもよい炭化水素基又はハロゲン原子であり、Ｗは単結合、炭素原子数１〜２０の芳香族基を含んでもよい炭化水素基、Ｏ、Ｓ、ＳＯ、ＳＯ_２、ＣＯ又はＣＯＯ基である。］

[Wherein, R ^{5 to} R ⁸ are each independently a hydrogen atom, a hydrocarbon group or a halogen atom which may contain an aromatic group having 1 to 9 carbon atoms, and W is a single bond, having 1 to 1 carbon atoms. A hydrocarbon group optionally containing 20 aromatic groups, an O, S, SO, SO ₂ , CO or COO group. ]

  For example, hydroquinone, resorcinol, 4,4'-biphenol, 1,1-bis (4-hydroxyphenyl) ethane (bisphenol E), 2,2-bis (4-hydroxyphenyl) propane (bisphenol A), 2,2- Bis (4-hydroxy-3-methylphenyl) propane (bisphenol C), 2,2-bis (4-hydroxyphenyl) butane, 1,1-bis (4-hydroxyphenyl) -1-phenylethane, 1,1 -Bis (4-hydroxyphenyl) cyclohexane (bisphenol Z), 1,1-bis (4-hydroxyphenyl) -3,3,5-trimethylcyclohexane, 2,2-bis (4-hydroxyphenyl) pentane, 4, 4 ′-(p-phenylenediisopropylidene) diphenol, α, α′-bis (4-hydro Xylphenyl) -m-diisopropylbenzene (bisphenol M), 1,1-bis (4-hydroxyphenyl) -4-isopropylcyclohexane, and the like. Among them, bisphenol A, bisphenol Z, bisphenol C, bisphenol E, and bisphenol M Bisphenol A is particularly preferable.

  The polycarbonate copolymer of the present invention is produced by a reaction means known per se for producing an ordinary aromatic polycarbonate resin, for example, a method of reacting an aromatic dihydroxy component with a carbonate precursor such as phosgene or carbonic acid diester. Next, basic means for these manufacturing methods will be briefly described.

  In a reaction using, for example, phosgene as a carbonate precursor, the reaction is usually performed in the presence of an acid binder and a solvent. As the acid binder, for example, an alkali metal hydroxide such as sodium hydroxide or potassium hydroxide or an amine compound such as pyridine is used. As the solvent, for example, halogenated hydrocarbons such as methylene chloride and chlorobenzene are used. In order to accelerate the reaction, a catalyst such as a tertiary amine or a quaternary ammonium salt can also be used. In that case, reaction temperature is 0-40 degreeC normally, and reaction time is several minutes-5 hours.

  The transesterification reaction using a carbonic acid diester as a carbonate precursor is performed by a method in which an aromatic dihydroxy component in a predetermined ratio is stirred with a carbonic acid diester while heating with an inert gas atmosphere to distill the generated alcohol or phenols. . The reaction temperature varies depending on the boiling point of the alcohol or phenol produced, but is usually in the range of 120 to 300 ° C. The reaction is completed while distilling off the alcohol or phenol produced under reduced pressure from the beginning.

  Moreover, in order to accelerate | stimulate reaction, the catalyst normally used for transesterification can also be used. Examples of the carbonic acid diester used in the transesterification include diphenyl carbonate, dinaphthyl carbonate, bis (diphenyl) carbonate, dimethyl carbonate, diethyl carbonate, and dibutyl carbonate. Of these, diphenyl carbonate is particularly preferred.

The polycarbonate copolymer of the present invention can use monofunctional phenols that are usually used as a terminal terminator in the polymerization reaction. Particularly in the case of a reaction using phosgene as a carbonate precursor, monofunctional phenols are generally used as a terminator for molecular weight control, and the resulting aromatic polycarbonate copolymer has a monofunctional end. Since it is blocked by a group based on phenols, it is superior in thermal stability compared to other groups.
Such monofunctional phenols may be used as long as they are used as an end stopper for aromatic polycarbonate resins.

The polycarbonate copolymer of the present invention has a specific viscosity at 20 ° C. in a solution of the polymer dissolved in methylene chloride as η _sp .
0.18 ≦ η _sp ≦ 0.90
It is preferable that More preferably,
0.20 ≦ η _sp ≦ 0.75
It is.
When η _sp is smaller than 0.18, the resin is brittle and the molded product becomes very easy to break, which is not preferable. When η _sp is larger than 0.90, the melt fluidity of the resin becomes very low and molding becomes difficult, which is not preferable.

[Polyether ester resin]
The polyether ester resin (B) used in the present invention is a polyether ester copolymer obtained by polymerizing an acid component and a glycol component.
The polyether ester resin (B) used in the present invention is desirably a polyether ester resin having a Tm (melting point) of 120 to 240 ° C., preferably 150 to 230 ° C., and most preferably 160 to 210 ° C.
The polyether ester resin (B) used in the present invention has an IV (intrinsic viscosity) of 0.5 to 1.5 (dl / g), preferably 0.8 to 1.4 (dl / g). It is desirable that the polyether ester resin is 1.0 to 1.3 (dl / g).

  In order to produce the polyether ester resin (B) used in the present invention, the carboxylic acid used for the synthesis thereof is an aromatic carboxylic acid or alicyclic carboxylic acid having 8 to 20 carbon atoms, such as terephthalic acid or isophthalic acid. Examples thereof include acid, phthalic acid, cyclohexanedicarboxylic acid, naphthalenedicarboxylic acid, and among them, terephthalic acid, isophthalic acid, and cyclohexanedicarboxylic acid are preferable.

［但し、式中Ｘは水素原子、ＣＨ_３、ＣＨ_２Ｃｌ、またはＣＨ_２ＯＣＨ_３を表し、ｎ及びｍはｎ≧０、ｍ≧０且つ１２０≧（ｎ＋ｍ）≧２０を満足するものとする。ｍが２以上の場合Ｘは同じでも異なってもよい。］
等が挙げられる。その中でもテトラメチレングリコール、エチレングリコール、シクロヘキサンジメタノール及び上記式[５]で表され式中のＸが水素原子、ＣＨ_３、ＣＨ_２Ｃｌ、ＣＨ_２ＯＣＨ_３であるポリ（アルキレンオキシド）グリコールが好ましい。 The glycols used for the synthesis of the polyetherester resin (B) of the present invention include (modified) ethylene glycol, tetramethylene glycol, cyclohexanedimethanol, trimethylene glycol, 1,5-pentanediol, 1,6-hexanediol. , Diethylene glycol and poly (alkylene oxide) glycol represented by the following formula [5],

[Wherein X represents a hydrogen atom, CH ₃ , CH ₂ Cl, or CH ₂ OCH ₃ , and n and m satisfy n ≧ 0, m ≧ 0, and 120 ≧ (n + m) ≧ 20. . When m is 2 or more, X may be the same or different. ]
Etc. Among them, tetramethylene glycol, ethylene glycol, cyclohexanedimethanol and poly (alkylene oxide) glycol represented by the above formula [5], wherein X is a hydrogen atom, CH ₃ , CH ₂ Cl, or CH ₂ OCH ₃ are preferable. .

［但し、式中Ｘは水素原子、ＣＨ_３、ＣＨ_２ＣｌもしくはＣＨ_２ＯＣＨ_３を表し、ｎは１２０≧ｎ≧１を満足するものとする。］

［但し、ｎは１２０≧ｎ≧１を満足するものとする。］ As the polyether ester resin (B) of the present invention, a polyether ester resin in which the ether structure contains repeating units [6] and / or [7] in the resin is preferable.

[Wherein X represents a hydrogen atom, CH ₃ , CH ₂ Cl or CH ₂ OCH ₃ , and n satisfies 120 ≧ n ≧ 1. ]

[However, n satisfies 120 ≧ n ≧ 1. ]

  When X is a complex group other than these, it is difficult to increase the degree of polymerization of the copolymer due to steric hindrance. In addition, those in which a halogen or alkoxy group is directly substituted on the main chain of the polyethylene glycol unit have a strong polymer decomposability. X is most preferably a hydrogen atom.

  On the other hand, when the value of n is less than 1, the block property of the block copolymer is lowered and the compatibility with the polycarbonate copolymer (A) becomes insufficient. On the other hand, when the value of n exceeds 120, polymerization is performed. The degree is lowered, and it becomes difficult to obtain a copolymer having a sufficient degree of polymerization. The poly (alkylene oxide) glycol component may itself be a random copolymer.

［但し、式中Ｘは水素原子、ＣＨ_３、ＣＨ_２ＣｌまたはＣＨ_２ＯＣＨ_３を表し、ｎ及びｍはｎ≧０、ｍ≧０且つ１２０≧（ｎ＋ｍ）≧２０を満足するものとする。ｍが２以上の場合Ｘは同じでも異なってもよい。］ Further, the polyether ester resin (B) of the present invention is most preferably composed of the following components (A), (B) and (C), and the repeating unit derived from the component (B) is a repeating unit derived from all glycols. Of 40 to 80% by weight of the polyetherester resin.
(A) 60 to 100 mol% of repeating units derived from terephthalic acid and 40 to 0 mol% of repeating units derived from isophthalic acid, or 100 mol% of repeating units derived from cyclohexanedicarboxylic acid, based on the repeating units derived from all acids.
(B) A repeating unit derived from cyclohexanedimethanol or a repeating unit derived from poly (alkylene oxide) glycol represented by the following general formula [8].

[Wherein X represents a hydrogen atom, CH ₃ , CH ₂ Cl or CH ₂ OCH ₃ , and n and m satisfy n ≧ 0, m ≧ 0 and 120 ≧ (n + m) ≧ 20. When m is 2 or more, X may be the same or different. ]

When X is a complex group other than these, it is difficult to increase the degree of polymerization of the copolymer due to steric hindrance. Those in which the main chain of the polyethylene glycol unit is directly substituted with a halogen or an alkoxy group have a strong polymer degradability. X is preferably a hydrogen atom. Further, when the value of (n + m) is less than 20, the block property of the block copolymer is lowered and the compatibility with the polycarbonate copolymer (A) becomes insufficient, while the value of (n + m) is 120. If it exceeds, the degree of polymerization will decrease, making it difficult to obtain a copolymer having a sufficient degree of polymerization. This repeating unit derived from poly (alkylene oxide) glycol may be a random copolymer or a block copolymer.
(Iii) (b) 65 to 100 mol% of repeating units derived from tetramethylene glycol and 35 to 0 mol% of repeating units derived from ethylene glycol, based on the repeating units derived from glycol excluding components.

  In addition, the repeating unit derived from tetramethylene glycol in this polyether ester resin needs to be 65 mol% or more based on the repeating unit derived from glycol excluding the component (b). If the repeating unit derived from tetramethylene glycol is less than 65 mol%, the moldability becomes poor.

Further, the copolymerization amount of cyclohexanedimethanol copolymerized in the polyether ester resin or poly (alkylene oxide) glycol represented by the above formula [8] is preferably 40 to 80% by weight of the total glycol component, preferably Is 40 to 70% by weight. If it is less than 40% by weight, the compatibility with the polycarbonate copolymer is deteriorated. If it exceeds 80% by weight, fusion and sticking of the polymer occur, resulting in problems in the process.
The polyether ester resin (B) may be copolymerized with an carboxylic acid other than an aromatic carboxylic acid having 8 to 20 carbon atoms or an alicyclic carboxylic acid as an acid.

When these components are copolymerized, the copolymerization amount is preferably less than 40 mol%, more preferably less than 20 mol%, based on the total acid component amount.
Further, the polyether ester resin (B) may be copolymerized with glycols other than the above-described compounds as glycols.
When these components are copolymerized, the copolymerization amount is preferably less than 40 mol%, more preferably less than 20 mol%, based on the glycol component amount excluding the component (b).

  The compounding quantity of the polyetherester resin (B) used for this invention is 2-95 weight part with respect to 100 weight part of polycarbonate copolymers (A), Preferably it is 3-85 weight part, Most preferred is 40 parts by weight. If the amount is less than 2 parts by weight, the target optical characteristics cannot be imparted. If the amount is more than 95 parts by weight, the photoelastic coefficient increases, which is a problem.

[Maleimide (co) polymer]
The maleimide (co) polymer (C) used in the present invention is an N-substituted maleimide monomer (A), or an N-substituted maleimide monomer (I) and an aromatic vinyl monomer (B). And / or a (co) polymer obtained by polymerizing an unsaturated monocarboxylic acid monomer (c).
The molecular weight of the maleimide (co) polymer (C) is preferably in the range of 5,000 to 200,000 and more preferably in the range of 5,000 to 100,000. More preferably, it is 10,000 to 50,000. If the weight average molecular weight exceeds the above range, the compatibility with polycarbonate may be extremely reduced. On the other hand, if it is below the above range, heat resistance and thermal stability may be lowered.
The maleimide (co) polymer (C) used in the present invention has a Tg (glass transition temperature) of 120 to 250 ° C, preferably 130 to 230 ° C, and most preferably 140 to 210 ° C. A (co) polymer is desirable.

  The N-substituted maleimide monomer (a) is preferably a compound having 4 to 25 carbon atoms, preferably 4 to 20 carbon atoms, and most preferably 5 to 16 carbon atoms, specifically phenyl maleimide, benzyl maleimide, naphthyl maleimide. And aromatic substituted maleimides such as o-chlorophenylmaleimide, alkyl-substituted maleimides such as methylmaleimide, ethylmaleimide, propylmaleimide, isopropylmaleimide, and cyclohexylmaleimide. These maleimide monomers can be used alone or in combination. Of these, phenylmaleimide and cyclohexylmaleimide are preferred because they are easily available industrially and the toxicity of the monomer is relatively low.

  The aromatic vinyl monomer (b) is preferably a compound having 2 to 25 carbon atoms, preferably 2 to 20 carbon atoms, and most preferably 8 to 15 carbon atoms. Specifically, styrene, α-methylstyrene, p -Methylstyrene, p-chlorostyrene, etc. are mentioned. These aromatic vinyl monomers can be used alone or in combination. Among these, styrene is preferable from the viewpoint of industrial availability and polymerizability.

  The unsaturated monocarboxylic acid monomer (c) is preferably a compound having 3 to 20 carbon atoms, preferably 3 to 15 carbon atoms, and most preferably 3 to 10 carbon atoms. Specifically, methacrylic acid, acrylic acid, etc. Is mentioned. These unsaturated monocarboxylic acid monomers can be used alone or in combination.

  Other copolymerizable monomers (d) other than the above (a), (b), and (c) are not particularly limited as long as they do not depart from the gist of the present invention. Specifically, methyl methacrylate , Methacrylates such as ethyl methacrylate, propyl methacrylate, 2-ethylhexyl methacrylate, acrylic esters such as methyl acrylate and butyl acrylate, vinyl cyanides such as acrylonitrile and methacrylonitrile, maleic anhydride, etc. Examples thereof include unsaturated dicarboxylic acid anhydrides. These other copolymerizable monomers can be used alone or in combination.

  As the method for producing the maleimide (co) polymer (C), known solution polymerization, suspension polymerization, and emulsion polymerization can be employed. In suspension polymerization and emulsion polymerization, a suspending agent and an emulsifier are mixed. Therefore, there is a risk of causing a decrease in transparency. The maleimide (co) polymer (C) of the present invention is preferably a polymer obtained by a solution polymerization method in which polymerization is performed in the presence of a solvent using a maleimide monomer. is there. Furthermore, the most preferable form is a polymer obtained by a batch solution polymerization method using a maleimide monomer.

  The polymerization temperature in the above polymerization reaction may be set according to the polymerization initiator to be used and is not particularly limited, but is preferably 50 ° C to 200 ° C, and more preferably 80 to 150 ° C. When the polymerization temperature is below the above range, it is necessary to use an initiator having a low decomposition temperature, which is disadvantageous for industrial production, such as requiring equipment for storing the initiator in a cold state. Above the above range, the monomer starts thermal polymerization in the middle of raising the temperature to the polymerization temperature, which is not preferable.

  The solvent used in the solution polymerization is not particularly limited. For example, there is no problem in the solution polymerization reaction, and both the monomer for obtaining the polymer of the present invention and the produced polymer of the present invention are dissolved. There is no particular limitation as long as it is a liquid that can be used, for example, aliphatic alcohols having 1 to 3 carbon atoms such as methanol, ethanol, glycol, cyclic ethers such as tetrahydrofuran, ketones such as methyl ethyl ketone, methyl isobutyl ketone, dimethyl sulfoxide, Examples include polar organic solvents such as dimethylformamide. The solvent used for non-aqueous dispersion polymerization is not particularly limited as long as the above-mentioned monomer for obtaining the polymer of the present invention can be dissolved and the produced polymer of the present invention is insoluble. Examples thereof include nonpolar organic solvents such as liquid hydrocarbons such as benzene, toluene, hexane, and cyclohexane. The amount of the solvent used for the solution polymerization or non-aqueous dispersion polymerization is preferably 20 to 80% by weight, more preferably 30 to 70% by weight, based on the total weight of the monomers. If it is below the above range, the stirring may be insufficient due to thickening at the end of the polymerization, and if it exceeds the above range, the molecular weight of the produced polymer may not rise to the above range.

As the polymerization initiator, peroxides and azo compounds which are known radical polymerization initiators are preferably used, and are appropriately determined according to the polymerization temperature, and are usually 0.001 to the total weight of the monomers. Used in a proportion of 1.0% by weight.
In the polymerization method of the present invention, a chain transfer agent can be used for adjusting the molecular weight. For example, α-methylstyrene or a mercaptan chain transfer agent can be used.

  The compounding quantity of the maleimide type (co) polymer of this invention is 4-95 weight part with respect to 100 weight part of polycarbonate compounds. Preferably, it is 6-75 weight part, and 30-60 weight part is the most preferable. If the amount is less than 4 parts by weight, the optical characteristics (particularly, the photoelastic coefficient) cannot be reduced. When the amount is more than 95 parts by weight, the haze is extremely increased, which is not preferable.

[Additive]
Various additives can be added to the resin composition of the present invention as long as the object of the present invention is not impaired.
Examples of additives include mold release agents such as montanic acid wax, polyethylene wax and silicone oil, flame retardants, flame retardant aids, heat stabilizers, ultraviolet absorbers, pigments, dyes, KCl, NaCl and other metal salts. Can be mentioned.

  The heat stabilizer is preferably a phosphorus stabilizer. Examples of such phosphorus stabilizers include phosphite compounds, phosphonite compounds, and phosphate compounds. Examples of the phosphite compound include triphenyl phosphite, trisnonylphenyl phosphite, tris (2,4-di-tert-butylphenyl) phosphite, tridecyl phosphite, trioctyl phosphite, trioctadecyl phosphite, di Decyl monophenyl phosphite, dioctyl monophenyl phosphite, diisopropyl monophenyl phosphite, monobutyl diphenyl phosphite, monodecyl diphenyl phosphite, monooctyl diphenyl phosphite, bis (2,6-di-tert-butyl-4- Methylphenyl) pentaerythritol diphosphite, 2,2-methylenebis (4,6-di-tert-butylphenyl) octyl phosphite, bis (nonylphenyl) pentaerythritol diphosphite Sufaito, and bis (2,4-di -tert- butylphenyl) pentaerythritol diphosphite and the like.

  Examples of the phosphate compound include tributyl phosphate, trimethyl phosphate, tricresyl phosphate, triphenyl phosphate, trichlorophenyl phosphate, triethyl phosphate, diphenyl cresyl phosphate, diphenyl monoorthoxenyl phosphate, tributoxyethyl phosphate, dibutyl phosphate, dioctyl phosphate , Diisopropyl phosphate and the like.

Examples of the phosphonite compound include tetrakis (2,4-di-tert-butylphenyl) -4,4′-biphenylenediphosphonite, tetrakis (2,4-di-tert-butylphenyl) -4,3′-biphenylenedi. Examples include phosphonite, tetrakis (2,4-di-tert-butylphenyl) -3,3′-biphenylene diphosphonite, bis (2,4-di-tert-butylphenyl) -4-biphenylene diphosphonite, and the like. It is done.
Among these, tris (2,4-di-tert-butylphenyl) phosphite, triphenyl phosphate, and trimethyl phosphate are preferable.

These heat stabilizers may be used alone or in combination of two or more. The content (or addition amount) of the heat stabilizer is, for example, in the range of about 0.001 to 0.5% by weight, preferably about 0.005 to 0.3% by weight, based on the entire resin composition. May be.

  Examples of the UV absorber include benzophenone UV absorbers, benzotriazole UV absorbers, triazine UV absorbers, benzoxazine UV absorbers, and salicylic acid phenyl ester UV absorbers.

  Examples of the benzophenone ultraviolet absorber include 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-n-octoxybenzophenone, 2-hydroxy-4-methoxy-2′-carboxybenzophenone, 2,4-dihydroxybenzophenone, 2,2′-dihydroxy-4-methoxybenzophenone and the like can be mentioned, among which 2-hydroxy-4-n-octoxybenzophenone is preferable.

  Examples of the benzotriazole ultraviolet absorber include 2- (2′-hydroxy-5′-methylphenyl) benzotriazole and 2- (2′-hydroxy-3 ′-(3,4,5,6-tetrahydrophthalimidomethyl). ) -5′-methylphenyl) benzotriazole, 2- (2′-hydroxy-3 ′, 5′-di-tert-butylphenyl) benzotriazole, 2- (2′-hydroxy-5′-tert-octylphenyl) ) Benzotriazole, 2- (3'-tert-butyl-5'-methyl-2'-hydroxyphenyl) -5-chlorobenzotriazole, 2,2'-methylenebis (4- (1,1,3,3- Tetramethylbutyl) -6- (2H-benzotriazol-2-yl) phenol), 2- (2'-hydroxy-3 ', 5'-bi) (Α, α-dimethylbenzyl) phenyl) -2H-benzotriazole, 2- (3 ′, 5′-di-tert-amyl-2′-hydroxyphenyl) benzotriazole, 5-trifluoromethyl-2- (2 -Hydroxy-3- (4-methoxy-α-cumyl) -5-tert-butylphenyl) -2H-benzotriazole and the like.

  Among them, 2- (2′-hydroxy-5′-methylphenyl) benzotriazole, 2- (2′-hydroxy-3 ′-(3,4,5,6-tetrahydrophthalimidomethyl) -5′-methylphenyl) benzo Triazole, 2- (2′-hydroxy-3 ′, 5′-di-tert-butylphenyl) benzotriazole, 2- (2′-hydroxy-5′-tert-octylphenyl) benzotriazole, 2- (3 ′ -Tert-butyl-5'-methyl-2'-hydroxyphenyl) -5-chlorobenzotriazole is preferred, and 2- (2'-hydroxy-5'-tert-octylphenyl) benzotriazole is more preferred.

  Examples of triazine ultraviolet absorbers include 2,4-diphenyl-6- (2-hydroxy-4-methoxyphenyl) -1,3,5-triazine and 2,4-diphenyl-6- (2-hydroxy-4). -Ethoxyphenyl) -1,3,5-triazine, 2,4-diphenyl-6- (2-hydroxy-4-propoxyphenyl) -1,3,5-triazine, 2,4-diphenyl-6- (2 -Hydroxy-4-butoxyphenyl) -1,3,5-triazine, 2,4-diphenyl-6- (2-hydroxy-4-hexyloxyphenyl) -1,3,5-triazine, 2,4-diphenyl -6- (2-hydroxy-4-octyloxyphenyl) -1,3,5-triazine, 2,4-diphenyl-6- (2-hydroxy-4-dodecyloxyphenyl) -1, , 5-triazine, 2,4-diphenyl-6- [2-hydroxy-4- (2-butoxyethoxy) phenyl] -1,3,5-triazine, 2,4-diphenyl-6- (2-hydroxy- 4-benzyloxyphenyl) -1,3,5-triazine, 2,4-di (4-methylphenyl) -6- (2-hydroxy-4-methoxyphenyl) -1,3,5-triazine, 2, 4-di (4-methylphenyl) -6- (2-hydroxy-4-ethoxyphenyl) -1,3,5-triazine, 2,4-di (4-methylphenyl) -6- (2-hydroxy- 4-propoxyphenyl) -1,3,5-triazine, 2,4-di (4-methylphenyl) -6- (2-hydroxy-4-butoxyphenyl) -1,3,5-triazine, 2,4 -Di (4-methylphen ) -6- (2-hydroxy-4-hexyloxyphenyl) -1,3,5-triazine, 2,4-di (4-methylphenyl) -6- (2-hydroxy-4-octyloxyphenyl) -1,3,5-triazine, 2,4-di (4-methylphenyl) -6- (2-hydroxy-4-dodecyloxyphenyl) -1,3,5-triazine, 2,4-di (4 -Methylphenyl) -6- [2-hydroxy-4- (2-hexyloxyethoxy) phenyl] -1,3,5-triazine, 2,4-bis (2,4-dimethylphenyl) -6- (2 -Hydroxy-4-ethoxyphenyl) -1,3,5-triazine, 2,4-bis (2,4-dimethylphenyl) -6- (2-hydroxy-4-butoxyphenyl) -1,3,5- Triazine, 2,4-bis ( 2,4-dimethylphenyl) -6- (2-hydroxy-4-octyloxyphenyl) -1,3,5-triazine, 2,4-bis (2,4-dimethylphenyl) -6- [2-hydroxy -4- (2-hexyloxyethoxy) phenyl] -1,3,5-triazine and the like, and commercially available products include Tinuvin 400 and Tinuvin 1577 (manufactured by Ciba Specialty Chemicals). Of these, Tinuvin 400 is preferred.

  Examples of the benzoxazine-based ultraviolet absorber include 2-methyl-3,1-benzoxazin-4-one, 2-butyl-3,1-benzoxazine-4-one, 2-phenyl-3,1-benzoxazine -4-one, 2- (1- or 2-naphthyl) -3,1-benzoxazin-4-one, 2- (4-biphenyl) -3,1-benzoxazin-4-one, 2,2 ′ -Bis (3,1-benzoxazin-4-one), 2,2'-p-phenylenebis (3,1-benzoxazin-4-one, 2,2'-m-phenylenebis (3,1- Benzoxazin-4-one), 2,2 ′-(4,4′-diphenylene) bis (3,1-benzoxazin-4-one), 2,2 ′-(2,6 or 1,5-naphthalene) ) Bis (3,1-benzoxazin-4-one) 1,3,5-tris (3,1-benzoxazin-4-on-2-yl) benzene and the like, among others, 2,2′-p-phenylenebis (3,1-benzoxazine-4- ON) is preferred.

Examples of the salicylic acid phenyl ester ultraviolet absorber include p-tert-butylphenyl salicylic acid ester and p-octylphenyl salicylic acid ester.
An ultraviolet absorber may be used independently or may use 2 or more types together. The content (or addition amount) of these ultraviolet absorbers is, for example, 0.01 to 5 wt%, preferably 0.02 to 3 wt%, where the total amount of the polycarbonate resin and the ultraviolet absorber is 100 wt%. About 0.05 to 2% by weight may be particularly preferable. If it is less than 0.01% by weight, the ultraviolet absorption performance may be insufficient. If it exceeds 5% by weight, the hue of the resin may be deteriorated.

  Examples of the release agent include silicone oil, higher fatty acid ester of monohydric or polyhydric alcohol, and the like, a part of monohydric or polyhydric alcohol having 1 to 20 carbon atoms and saturated fatty acid having 10 to 30 carbon atoms. Esters or all esters are preferred. Examples of such release agents include stearic acid monoglyceride, stearic acid monosorbate, behenic acid monoglyceride, pentaerythritol monostearate, pentaerythritol tetrastearate, propylene glycol monostearate, stearyl stearate, palmityl palmitate. Examples thereof include tate, butyl stearate, methyl laurate, isopropyl palmitate, 2-ethylhexyl stearate, and stearic acid monoglyceride and pentaerythritol tetrastearate are preferable. The release agents may be used alone or in combination of two or more.

  The compounding amount (addition amount, content) of the release agent is, for example, 0.01 to 2% by weight, preferably 0.015 to 0.5% by weight, more preferably 0.5%, based on the resin composition. It may be about 02 to 0.2% by weight. If the blending amount is within this range, it is preferable because the mold release property is excellent and the mold release agent does not cause mold contamination.

  In addition, other thermoplastic resins such as polyethylene, polypropylene, polystyrene, acrylic resins, fluororesins, polyamides, polyacetals, polysulfones, polyphenylene sulfides; thermosetting resins such as phenol resins and melamine resins are used within the range not impairing the object of the present invention. , Silicone resin, epoxy resin; soft thermoplastic resin such as ethylene / vinyl acetate copolymer, polyester elastomer, epoxy-modified polyolefin, and other fillers such as talc, kaolin, wollastonite, Clay, silica, sericite, titanium oxide, carbon black, graphite, metal powder, glass beads, glass balloons, glass flakes, glass powder, and glass fibers can be added.

[Method for Producing Resin Composition]
The resin composition of this invention can be obtained by mix | blending the said (A), (B), (C) component by arbitrary mixing methods.
Usually, it is preferable to disperse these blending components more uniformly, and it is preferable to disperse all or part of them simultaneously or separately uniformly.

  In the resin composition of the present invention, it is possible to use a method in which all or a part of the components are simultaneously or separately mixed and homogenized with a mixer such as a blender, kneader, Banbury mixer, roll, or extruder.

Further, it is also possible to use a method in which a pre-dry blended composition is melt-kneaded with a heated extruder, homogenized, extruded into a wire shape, and then cut into a desired length and granulated.
Since the resin composition of the present invention has a high degree of transparency and excellent melt processability, it is also suitable as a film or a sheet such as a plastic substrate, a protective film for an optical disk, a light guide plate or a diffusion plate.

In addition, since the resin composition of the present invention has high transparency and excellent melt processability, lenses such as pickup lenses, camera lenses, microarray lenses, projector lenses and Fresnel lenses, optical path conversion parts such as prisms and optical fibers, It is also optimal as an optical component (molded product) such as a reflow soldering component, an optical disc, a plastic mirror, various cases, a tray, or a container.
The following examples illustrate the invention.

  According to the polycarbonate resin composition of the present invention, a retardation film having high transparency, a low photoelastic coefficient, and excellent melt processability can be provided.

The resins used and the evaluation methods used in the examples are as follows. The unit in Table 1 with respect to the blending amount is wt%.
1. Resin used The following raw materials were used.
・ Polycarbonate copolymer (PC (1))
In a reactor equipped with a thermometer, a stirrer, and a reflux condenser, 21540 parts of ion-exchanged water and 4930 parts of a 48% aqueous sodium hydroxide solution were added, and 9,9-bis (4-hydroxy) having an b value of 3.0 in an ethanol solution. -3-methylphenyl) fluorene (hereinafter abbreviated as “BCF”) 3231 parts, 2,2-bis (4-hydroxyphenyl) propane (hereinafter abbreviated as “BPA”) 1949 parts and hydro After dissolving 15 parts of sulfite, 14530 parts of methylene chloride was added, and then 2200 parts of phosgene was blown in at a temperature of 15 to 25 ° C. with stirring for 60 minutes. After completion of the phosgene blowing, 163.1 parts of cumylphenol and 705 parts of 48% aqueous sodium hydroxide were added, and after emulsification, 5.9 parts of triethylamine was added and stirred at 28 to 33 ° C. for 1 hour to complete the reaction. After completion of the reaction, the product was diluted with methylene chloride, washed with water, acidified with hydrochloric acid, washed with water, and when the conductivity of the aqueous phase became almost the same as that of ion-exchanged water, the methylene chloride was evaporated with a kneader, As a result, 5350 parts of a yellowish white polymer having a BCF to BPA molar ratio of 50:50, a specific viscosity of 0.297, and a Tg of 197 ° C. were obtained (94% yield).

・ Polycarbonate copolymer (PC (2))
A reactor equipped with a thermometer, a stirrer, and a reflux condenser was charged with 21540 parts of ion-exchanged water and 4930 parts of a 48% aqueous sodium hydroxide solution, and 9,9-bis (4-hydroxy) having a b value of 3.0 in an ethanol solution. After dissolving 3523 parts of -3-methylphenyl) fluorene, 1169 parts of 2,2-bis (4-hydroxyphenyl) propane and 15 parts of hydrosulfite, 14530 parts of methylene chloride was added and stirred at 15 to 25 ° C. 2200 parts of phosgene was blown in over 60 minutes. After completion of phosgene blowing, 174 parts of cumylphenol and 705 parts of 48% aqueous sodium hydroxide solution were added. After emulsification, 5.9 parts of triethylamine was added and stirred at 28 to 33 ° C. for 1 hour to complete the reaction. After completion of the reaction, the product was diluted with methylene chloride, washed with water, acidified with hydrochloric acid, washed with water, and when the conductivity of the aqueous phase became almost the same as that of ion-exchanged water, the methylene chloride was evaporated with a kneader, As a result, 5640 parts of a yellowish white polymer having a BCF to BPA molar ratio of 70:30, a specific viscosity of 0.263, and a Tg of 216 ° C. were obtained (yield 90%).

・ Polyether ester resin
ECDEL 9966 (copolymer of cyclohexanedimethanol, terephthalic acid and polytetramethylene glycol) manufactured by Eastman Chemical Company
・ Maleimide copolymer PSX0371 (copolymer of styrene and N-phenylmaleimide) manufactured by Nippon Shokubai Co., Ltd.
・ Polystyrene (PC-g-PS)
MODIPER C L130 manufactured by Nippon Oil & Fats Co., Ltd.
(Polystyrene grafted on polycarbonate)

2. Haze Measurement A test piece having a length of 50 mm, a width of 50 mm, and a thickness of 180 μm was cut out from the film, and the haze was measured using a Haze Meter NDH2000 manufactured by Nippon Denshoku Industries Co., Ltd.

3. Photoelastic coefficient measurement A test piece having a length of 60 mm, a width of 10 mm, and a thickness of 180 μm was cut out from the film, and the photoelastic coefficient was measured using a Spectroellipsometer M-200 manufactured by JASCO Corporation.

4). Wavelength dispersibility measurement A test piece having a length of 75 mm, a width of 15 mm and a thickness of 180 μm was cut out from the film and stretched 1.5 times at a stretching temperature of Tg + 15 ° C. The wavelength dispersion was measured using 200.

5. Tg (Glass Transition Temperature) Measurement A 2910 type DSC manufactured by TA Instruments Japan Co., Ltd. was used and measured at a temperature elevation rate of 20 ° C./min.

6). Roll rollability of melt-extruded film A film (thickness of 150 to 150 mm) was formed using the following film apparatus and take-up roll (diameter 120 mm, width 230 mm) and take-up roll (diameter 60 mm, width 200 mm) under the following conditions. 200 μm) was evaluated.
Equipment used: Technobel KZW15-30MG twin screw extruder
Technobell Co., Ltd. T-die (Discharge port width 150mm, thickness 0.5mm)
Implementation conditions: cylinder temperature Tg + 100 ° C. to Tg + 170 ° C.
T die temperature Tg + 100 ° C to Tg + 170 ° C
Take-up roll temperature Tg ± 30 ° C (winding roll is unheated)
Screw rotation speed 200 ~ 300rpm
The evaluation criteria are as follows.
○: Can be wound with a winding roll without any particular problem.
Δ: Can be wound with a winding roll, but breakage occurs three times or more per 30 minutes.
X: Winding with a winding roll is impossible.

[Example 1]
After uniformly dry blending each resin in the proportions shown in Table 1, Technobel KZW15-30MG twin screw extruder, Technobel T-die (discharge port width 150 mm, thickness 0.5 mm) and take-off Using a roll (diameter: 120 mm, width: 230 mm) and a winding roll (diameter: 60 mm, width: 200 mm), a specimen having a thickness in the range of 150 μm to 200 μm and 180 μm can be collected, and a transparent film can be created. The film is melt-cast while adjusting the cylinder temperature to Tg + 100 ° C. to Tg + 170 ° C., the T die temperature to Tg + 100 ° C. to Tg + 170 ° C., the take-up roll temperature to Tg ± 30 ° C., and the screw rotation speed to 200 to 300 rpm. The film was evaluated for size after cutting.

[Examples 2 and 3 and Comparative Examples 1 to 3]
Various raw materials were uniformly dry-blended in advance in the proportions shown in Table 1, and then melt-formed into a film by the same method as in Example 1, and the film was cut to a required size and evaluated.

As shown in Table 1, the resin composition exhibits good melt processability, high transparency, and low photoelastic coefficient, and is suitable as a retardation film. Moreover, it was confirmed that the wavelength dispersibility of Examples 1 and 2 was a single film and had flat dispersibility as shown below.
(Phase difference at wavelength 450 nm) ÷ (Phase difference at wavelength 550 nm) ≈0.99
(Phase difference at wavelength 650 nm) ÷ (Phase difference at wavelength 550 nm) ≈1.00

Further, it was confirmed that the wavelength dispersibility of Example 3 was a single film and exhibited reverse dispersibility as shown below.
(Phase difference at wavelength 450 nm) ÷ (Phase difference at wavelength 550 nm) ≈0.70
(Phase difference at wavelength 650 nm) ÷ (Phase difference at wavelength 550 nm) ≈1.14
On the other hand, as shown in Comparative Example 1, the synthesized PC alone generates a gel-like material, has a high Tg, and cannot obtain a good film.
Comparative Examples 2 and 3 have large haze and are not suitable for optical films.

Claims (16)

(A) The following general formula [1]

[Wherein, R ^{1 to} R ⁴ each independently represents a hydrogen atom, a hydrocarbon group which may contain an aromatic group having 1 to 9 carbon atoms, or a halogen atom. ] The repeating unit (A1) represented by the following general formula [2]

[Wherein, R ^{5 to} R ⁸ are each independently a hydrogen atom, a hydrocarbon group or a halogen atom which may contain an aromatic group having 1 to 9 carbon atoms, and W is a single bond, having 1 to 1 carbon atoms. A hydrocarbon group optionally containing 20 aromatic groups, an O, S, SO, SO ₂ , CO or COO group. ]
In the range of (A1) :( A2) = 5: 95 to 95: 5, the ratio of units (A1) to units (A2) in all carbonate repeating units is (A1) :( A2) = 5: 95 to 95: 5. Aromatic polycarbonate obtained by blending 2 to 95 parts by weight of (B) polyetherester resin and 4 to 95 parts by weight of (C) maleimide (co) polymer with respect to 100 parts by weight of certain aromatic polycarbonate copolymer Resin composition. The aromatic polycarbonate resin composition according to claim 1, wherein the ether structure in the polyetherester resin (B) contains a repeating unit [3] and / or [4].

[Wherein X represents a hydrogen atom, CH ₃ , CH ₂ Cl or CH ₂ OCH ₃ , and n satisfies 120 ≧ n ≧ 1. ]   The aromatic polycarbonate resin composition according to claim 1 or 2, wherein the carboxylic acid used for the synthesis of the polyetherester resin is an aromatic carboxylic acid or alicyclic carboxylic acid having 8 to 20 carbon atoms. The polyether ester resin (B) is (i) (ii-1) terephthalic acid, (ii-2) terephthalic acid and isophthalic acid or (ii-3) cyclohexanedicarboxylic acid,
(Ro) (ro-1) cyclohexanedimethanol or (ro-2) poly (alkylene oxide) glycol represented by the following general formula [5],

[Wherein X represents a hydrogen atom, CH ₃ , CH ₂ Cl or CH ₂ OCH ₃ , and n and m satisfy n ≧ 0, m ≧ 0 and 120 ≧ (n + m) ≧ 20. When m is 2 or more, X may be the same or different. ]
And (c) a polyether ester block copolymer obtained by copolymerizing (c-1) tetramethylene glycol or (c-2) tetramethylene glycol and ethylene glycol. Aromatic polycarbonate resin composition. The polyether ester resin (B) is derived from (a) 60 to 100 mol% of repeating units derived from terephthalic acid and 40 to 0 mol% of repeating units derived from isophthalic acid based on repeating units derived from all acids, or derived from cyclohexanedicarboxylic acid. Repeating unit 100 mol%
(B) A repeating unit derived from cyclohexanedimethanol or a repeating unit derived from poly (alkylene oxide) glycol represented by the following general formula [6]:

[Wherein X represents a hydrogen atom, CH ₃ , CH ₂ Cl or CH ₂ OCH ₃ , and n and m satisfy n ≧ 0, m ≧ 0 and 120 ≧ (n + m) ≧ 20. When m is 2 or more, X may be the same or different. ]
And (iii) 65 to 100 mol% of repeating units derived from tetramethylene glycol and 35 to 0 mol% of repeating units derived from ethylene glycol, based on the repeating units derived from glycol excluding components (b)
A polyether ester resin comprising a polyether ester block copolymer composed of a glycol component and having a copolymerization amount of repeating units derived from component (b) of 40 to 80% by weight of the repeating units derived from all glycols The aromatic polycarbonate resin composition according to claim 4. The aromatic polycarbonate resin composition according to any one of claims 1 to 5, wherein the repeating unit (A1) is a repeating unit represented by the following formula [7].

The aromatic polycarbonate resin composition according to any one of claims 1 to 6, wherein the repeating unit (A2) is a repeating unit represented by the following formulas [8] to [12].

  The aromatic polycarbonate resin composition according to any one of claims 1 to 7, wherein the maleimide (co) polymer (C) is a (co) polymer of an N-substituted maleimide monomer.   2. The maleimide (co) polymer (C) is a copolymer of an N-substituted maleimide monomer and an aromatic vinyl monomer and / or an unsaturated monocarboxylic acid monomer. The aromatic polycarbonate resin composition in any one of -7.   A film or sheet comprising the aromatic polycarbonate resin composition according to claim 1.   The film or sheet according to claim 10, wherein the film or sheet is a film or sheet formed by a melt extrusion method or a cast film method.   The film or sheet according to claim 10 or 11, wherein the film or sheet is a retardation film. The retardation film according to claim 12, wherein the retardation film satisfies the following characteristics.
R (450) / R (550) ≦ 1
[Wherein, R (450) and R (550) represent the retardation of the retardation film at wavelengths of 450 nm and 550 nm, respectively. ]   The film or sheet according to claim 10 or 11, wherein the film or sheet is a plastic substrate, a protective film for an optical disk, a light guide plate or a diffusion plate.   A molded article comprising the aromatic polycarbonate resin composition according to any one of claims 1 to 9.   Molded products are pickup lenses, camera lenses, microarray lenses, projector lenses and Fresnel lenses, optical path conversion parts such as prisms and optical fibers, reflow soldering parts, optical disks, plastic mirrors, various cases, trays or containers. The molded product according to claim 15.