JP2015221915A - Polycarbonate resin composition, optical film and polycarbonate resin molded article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a polycarbonate resin composition containing a constitutional unit derived from a specific dihydroxy compound and excellent in heat resistance and transparency.SOLUTION: There is provided a polycarbonate resin composition containing at least a constitutional unit derived from a dihydroxy compound represented by the following general formula (4), having a percentage of existence number (A) of terminal groups represented by the following formula (2) to the total terminal number (B) (A/B) in a range of 20% or more and containing a phosphorus compound of 0.001 pt.wt. to 1 pt.wt. based on 100 pts.wt. of the composition having the content of an aromatic monohydroxy compound which may have an alkyl group having 5 or less carbon atoms of 700 ppm or less.

Description

  The present invention relates to a polycarbonate resin composition and the like, and more particularly to a polycarbonate resin composition and the like having a structural unit derived from a specific dihydroxy compound.

  In recent years, it has been described that isosorbide, which is a plant-derived monomer, is used as a polycarbonate resin using raw materials obtained from biomass resources, and a polycarbonate resin is obtained by transesterification with diphenyl carbonate (see Patent Document 1). Patent Document 2 describes a polycarbonate resin obtained by copolymerizing isosorbide and bisphenol A. Patent Document 3 describes that the rigidity of a polycarbonate resin is improved by copolymerizing isosorbide and an aliphatic diol.

British Patent 1,079,686 JP-A-56-055425 International Publication No. 2004/111106 Pamphlet

By the way, the polycarbonate resin obtained by using isosorbide as a plant-derived monomer is insufficient in terms of heat resistance and transparency as compared with the conventional aromatic polycarbonate derived from petroleum raw materials. Moreover, there exists a problem that it yellows at the time of melt molding and it is difficult to use as a transparent member or an optical member.
An object of the present invention is to provide a polycarbonate resin containing a structural unit derived from a specific dihydroxy compound and excellent in heat resistance and transparency, and a composition containing the same.

According to the present invention, a polycarbonate resin composition, an optical film, and a polycarbonate resin molded product according to the following claims are provided.
The invention according to claim 1 includes at least a constitutional unit derived from a dihydroxy compound represented by the following general formula (4), and includes all terminals having the number of terminal groups (A) represented by the following structural formula (2). The composition (A / B) with respect to the number (B) is in the range of 20% or more, and the content of the aromatic monohydroxy compound optionally having an alkyl group having 5 or less carbon atoms is 700 ppm or less. A polycarbonate resin composition comprising 0.001 part by weight or more and 1 part by weight or less of a phosphorus compound with respect to 100 parts by weight of the product.

  The invention according to claim 2 further includes 0.001 part by weight or more and 1 part by weight or less of an aromatic monohydroxy compound substituted by one or more alkyl groups having 5 or more carbon atoms with respect to 100 parts by weight of the composition. The polycarbonate resin composition according to claim 1.

  Invention of Claim 3 is a polycarbonate resin composition of Claim 1 or 2 characterized by including 60 ppm or less of dihydroxy compounds represented by following General formula (4).

  Invention of Claim 4 is a polycarbonate resin composition of any one of Claims 1 thru | or 3 characterized by including the carbonic acid diester 60ppm or less represented by following General formula (3).

(In the general formula ^{(3), A 1, A} 2 is an aromatic group which may have an aliphatic group or a substituent having 1 to 18 carbon atoms which may have a substituent, A ¹ and A ² may be the same or different.)

  The invention according to claim 5 is the polycarbonate resin composition according to any one of claims 1 to 4, wherein the glass transition temperature of the polycarbonate resin composition is 90 ° C or higher.

  In the invention according to claim 6, the polycarbonate resin composition is derived from at least one compound selected from the group consisting of aliphatic dihydroxy compounds, alicyclic dihydroxy compounds, oxyalkylene glycols, and diols having a cyclic acetal structure. The polycarbonate resin composition according to any one of claims 1 to 5, further comprising a unit.

  The invention according to claim 7 further comprises a fatty acid of 0.0001 to 2 parts by weight of fatty acid with respect to 100 parts by weight of the composition. The polycarbonate resin composition.

  The invention according to claim 8 further comprises a natural product wax in an amount of 0.0001 to 2 parts by weight with respect to 100 parts by weight of the composition. The polycarbonate resin composition described in 1.

  The invention according to claim 9 further includes 0.0001 part by weight or more and 2 parts by weight or less of at least one compound selected from olefinic wax and silicone oil with respect to 100 parts by weight of the composition. Item 7. The polycarbonate resin composition according to any one of Items 1 to 6.

  The invention according to claim 10 further comprises 0.0001 part by weight or more and 0.1 part by weight or less of an acidic compound with respect to 100 parts by weight of the composition. It is a polycarbonate resin composition of description.

  The invention according to claim 11 further includes 0.0001 part by weight or more and 0.1 part by weight or less of at least one acidic compound with respect to 100 parts by weight of the composition. The polycarbonate resin composition according to item 1.

  The invention according to claim 12 further includes 0.000001 part by weight or more and 1 part by weight or less of a bluing agent with respect to 100 parts by weight of the composition. The polycarbonate resin composition.

  The invention according to claim 13 is an optical film comprising the polycarbonate resin composition according to any one of claims 1 to 6.

  The invention according to claim 14 is obtained by molding the polycarbonate resin composition according to any one of claims 1 to 6 or the polycarbonate resin composition according to any one of claims 7 to 12. It is a polycarbonate resin molded product characterized.

  According to the present invention, a polycarbonate resin excellent in heat resistance and transparency and a polycarbonate resin composition containing the polycarbonate resin are obtained.

It shows a ¹ H-NMR chart of heterocycle-containing polycarbonate resin A.

  Hereinafter, embodiments of the present invention will be described in detail. The present invention is not limited to the following embodiments, and various modifications can be made within the scope of the invention. The drawings used are for explaining the present embodiment and do not represent the actual size. In the present invention, ppm means the weight ratio of the object to the reference object unless otherwise specified.

[1] Polycarbonate resin The polycarbonate resin used in the present invention has a structure including at least a structural unit derived from a dihydroxy compound having a bond structure represented by the following structural formula (1).

(However, a hydrogen atom is not bonded to an oxygen atom in the structural formula (1).)

(Dihydroxy compound)
Examples of the dihydroxy compound having the bond structure represented by the structural formula (1) include 9,9-bis (4- (2-hydroxyethoxy) phenyl) fluorene and 9,9-bis (4- (2-hydroxyethoxy). -3-methylphenyl) fluorene, 9,9-bis (4- (2-hydroxyethoxy) -3-isopropylphenyl) fluorene, 9,9-bis (4- (2-hydroxyethoxy) -3-isobutylphenyl) Fluorene, 9,9-bis (4- (2-hydroxyethoxy) -3-tert-butylphenyl) fluorene, 9,9-bis (4- (2-hydroxyethoxy) -3-cyclohexylphenyl) fluorene, 9, 9-bis (4- (2-hydroxyethoxy) -3-phenylphenyl) fluorene, 9,9-bis (4- (2-hydroxy) Ethoxy) -3,5-dimethylphenyl) fluorene, 9,9-bis (4- (2-hydroxyethoxy) -3-tert-butyl-6-methylphenyl) fluorene, 9,9-bis (4- (3 -Hydroxy-2,2-dimethylpropoxy) phenyl) fluorene, etc., compounds having an aromatic group in the side chain and an ether group bonded to the aromatic group in the main chain; And bis [4- (2-hydroxyethoxy) phenyl] methane, bis [4- (2-hydroxyethoxy) phenyl] diphenylmethane, 1,1-bis [4- (2-hydroxyethoxy) ) Phenyl] ethane, 1,1-bis [4- (2-hydroxyethoxy) phenyl] -1- Phenylethane, 2,2-bis [4- (2-hydroxyethoxy) phenyl] propane, 2,2-bis [4- (2-hydroxyethoxy) -3-methylphenyl] propane, 2,2-bis [3, 5-dimethyl-4- (2-hydroxyethoxy) phenyl] propane, 1,1-bis [4- (2-hydroxyethoxy) phenyl] -3,3,5-trimethylcyclohexane, 1,1-bis [4- (2-hydroxyethoxy) phenyl] cyclohexane, 1,4-bis [4- (2-hydroxyethoxy) phenyl] cyclohexane, 1,3-bis [4- (2-hydroxyethoxy) phenyl] cyclohexane, 2,2- Bis [4- (2-hydroxyethoxy) -3-phenylphenyl] propane, 2,2-bis [(2-hydroxyethoxy) -3-i Sopropylphenyl] propane, 2,2-bis [3-tert-butyl-4- (2-hydroxyethoxy) phenyl] propane, 2,2-bis [4- (2-hydroxyethoxy) phenyl] butane, 2, 2-bis [4- (2-hydroxyethoxy) phenyl] -4-methylpentane, 2,2-bis [4- (2-hydroxyethoxy) phenyl] octane, 1,1-bis [4- (2-hydroxy) Ethoxy) phenyl] decane, 2,2-bis [3-bromo-4- (2-hydroxyethoxy) phenyl] propane, 2,2-bis [3-cyclohexyl-4- (2-hydroxyethoxy) phenyl] propane, and the like Bis (hydroxyalkoxyaryl) alkanes; 1,1-bis [4- (2-hydroxyethoxy) phenyl] cyclohexane, 1,1 Bis (hydroxyalkoxyaryl) cycloalkanes such as bis [3-cyclohexyl-4- (2-hydroxyethoxy) phenyl] cyclohexane, 1,1-bis [4- (2-hydroxyethoxy) phenyl] cyclopentane; Dihydroxyalkoxydiaryl ethers such as 4′-bis (2-hydroxyethoxy) diphenyl ether and 4,4′-bis (2-hydroxyethoxy) -3,3′-dimethyldiphenyl ether; -Bishydroxyalkoxyaryl sulfides such as bis (2-hydroxyethoxyphenyl) sulfide, 4,4'-bis [4- (2-dihydroxyethoxy) -3-methylphenyl] sulfide; 4,4'-bis (2 -Hydroxyethoxyphenyl) sulfoxide, 4,4'-bis [4- (2-dihydride) Bishydroxyalkoxyaryl sulfoxides such as xoxyethoxy) -3-methylphenyl] sulfoxide; 4,4′-bis (2-hydroxyethoxyphenyl) sulfone, 4,4′-bis [4- (2-dihydroxyethoxy) -3 -Bishydroxyalkoxyaryl sulfones such as methylphenyl] sulfone; 1,4-bishydroxyethoxybenzene, 1,3-bishydroxyethoxybenzene, 1,2-bishydroxyethoxybenzene, 1,3-bis [2- [ 4- (2-hydroxyethoxy) phenyl] propyl] benzene, 1,4-bis [2- [4- (2-hydroxyethoxy) phenyl] propyl] benzene, 4,4′-bis (2-hydroxyethoxy) biphenyl 1,3-bis [4- (2-hydroxyethoxy) phenyl] 5,7-dimethyladamantane, a dihydroxy compound having a heterocyclic group represented by the dihydroxy compound represented by the following general formula (4); and 2- (5-ethyl-5-hydroxymethyl-1,3-dioxane -2-yl) -2-methylpropan-1-ol, 3,9-bis (2-hydroxy-1,1-dimethylethyl) -2,4,8,10-tetraoxaspiro [5,5] undecane Spiroglycols and the like. These may be used alone or in combination of two or more.
Among these, a dihydroxy compound represented by the following general formula (4) is preferable.

  Examples of the dihydroxy compound represented by the general formula (4) include isosorbide, isomannide, and isoide which are in a stereoisomeric relationship. These may be used alone or in combination of two or more. Among these dihydroxy compounds, isosorbide obtained by dehydrating condensation of sorbitol produced from various starches that are abundant as resources and are readily available is easy to obtain and manufacture, optical properties, moldability From the viewpoint of the above, it is most preferable.

  Isosorbide is easily oxidized gradually by oxygen. For this reason, when storing or handling during production, it is important to prevent moisture from being mixed, to use an oxygen scavenger, or to be in a nitrogen atmosphere in order to prevent decomposition by oxygen. When isosorbide is oxidized, decomposition products such as formic acid are generated. For example, when a polycarbonate resin is produced using isosorbide containing these decomposition products, the resulting polycarbonate resin is colored or causes a significant deterioration in physical properties. Moreover, it may affect the polymerization reaction, and a high molecular weight polymer may not be obtained. In addition, when a stabilizer for preventing the generation of formic acid is added, depending on the type of the stabilizer, coloring may occur in the obtained polycarbonate resin, or the physical properties may be significantly deteriorated. A reducing agent or an antacid is used as the stabilizer. Among these, examples of the reducing agent include sodium borohydride and lithium borohydride, and examples of the antacid include alkali metal salts such as sodium hydroxide. The addition of such an alkali metal salt is not preferable because the alkali metal also serves as a polymerization catalyst, and if it is excessively added, the polymerization reaction cannot be controlled. In the present specification, the terms “alkali metal” and “alkaline earth metal” are respectively referred to as “Group 1 metal” and “Group 2” in the long-period periodic table (Nomenclature of Inorganic Chemistry IUPAC Recommendations 2005). Synonymous with “metal”.

  In order to obtain isosorbide containing no oxidative decomposition product, isosorbide may be distilled as necessary. Moreover, also when the stabilizer is mix | blended in order to prevent the oxidation and decomposition | disassembly of isosorbide, you may distill isosorbide as needed. In this case, the distillation of isosorbide may be simple distillation or continuous distillation, and is not particularly limited. Distillation is carried out under reduced pressure in an inert gas atmosphere such as argon or nitrogen. By performing such distillation of isosorbide, it is possible to use high purity isosorbide having a formic acid content of 20 ppm or less, particularly 5 ppm or less.

In addition, the measuring method of formic acid content in isosorbide is performed according to the following procedures using an ion chromatograph.
About 0.5 g of isosorbide is precisely weighed and collected in a 50 ml volumetric flask and made up to volume with pure water. A sodium formate aqueous solution is used as a standard sample, and the peak having the same retention time as that of the standard sample is defined as formic acid.
As the ion chromatograph, DX-500 type manufactured by Dionex was used, and an electric conductivity detector was used as a detector. As a measurement column, AG-15 is used for a guard column manufactured by Dionex, and AS-15 is used for a separation column. A measurement sample is injected into a 100 μl sample loop, and 10 mM NaOH is used as an eluent, and measurement is performed at a flow rate of 1.2 ml / min and a thermostat temperature of 35 ° C. A membrane suppressor is used as the suppressor, and a 12.5 mM-H ₂ SO ₄ aqueous solution is used as the regenerating solution.

(Alicyclic dihydroxy compound)
It is preferable that the polycarbonate resin used by this invention contains the structural unit derived from an alicyclic dihydroxy compound other than the structural unit derived from the dihydroxy compound represented by General formula (4) mentioned above.
Although it does not specifically limit as an alicyclic dihydroxy compound, Usually, the compound containing a 5-membered ring structure or a 6-membered ring structure is mentioned. When the alicyclic dihydroxy compound has a 5-membered or 6-membered ring structure, the heat resistance of the obtained polycarbonate resin can be increased. The six-membered ring structure may be fixed in a chair shape or a boat shape by a covalent bond.
The number of carbon atoms contained in the alicyclic dihydroxy compound is usually 70 or less, preferably 50 or less, more preferably 30 or less. If the number of carbon atoms is excessively large, the heat resistance becomes high, but synthesis tends to be difficult, purification becomes difficult, and the cost tends to be high. The smaller the number of carbon atoms, the easier to purify and the easier to obtain.

Specific examples of the alicyclic dihydroxy compound containing a 5-membered ring structure or a 6-membered ring structure include alicyclic dihydroxy compounds represented by the following general formula (II) or (III).
^{_{HOCH 2 -R 1 -CH 2 OH (}} II)
HO—R ² —OH (III)
(However, in formula (II) and formula (III), R ¹ and R ² represent a cycloalkylene group having 4 to 20 carbon atoms.)

As cyclohexanedimethanol which is an alicyclic dihydroxy compound represented by the above general formula (II), in general formula (II), R ¹ is represented by the following general formula (IIa) (wherein R ³ has 1 to Which represents 12 alkyl groups). Specific examples thereof include 1,2-cyclohexanedimethanol, 1,3-cyclohexanedimethanol, 1,4-cyclohexanedimethanol, and the like.

As tricyclodecane dimethanol and pentacyclopentadecane dimethanol, which are alicyclic dihydroxy compounds represented by the above general formula (II), in general formula (II), R ¹ is represented by the following general formula (IIb) (in the formula: , N is represented by 0 or 1).

As decalin dimethanol or tricyclotetradecane dimethanol which is an alicyclic dihydroxy compound represented by the above general formula (II), in general formula (II), R ¹ is represented by the following general formula (IIc) (wherein m represents 0 or 1). Specific examples thereof include 2,6-decalin dimethanol, 1,5-decalin dimethanol, 2,3-decalin dimethanol, and the like.

Moreover, as norbornane dimethanol which is an alicyclic dihydroxy compound represented by the above general formula (II), various isomers in which R ¹ is represented by the following general formula (IId) in the general formula (II) Includes. Specific examples thereof include 2,3-norbornane dimethanol, 2,5-norbornane dimethanol and the like.

The adamantane dimethanol, which is an alicyclic dihydroxy compound represented by the general formula (II), includes various isomers in which R ¹ is represented by the following general formula (IIe) in the general formula (II). Specific examples of such a material include 1,3-adamantane dimethanol.

Further, cyclohexanediol, which is an alicyclic dihydroxy compound represented by the general formula (III), in general formula (III), ^{R 2} is represented by the following general formula (IIIa) (wherein, ^{R 3} is 1 to carbon atoms And various isomers represented by 12 alkyl groups). Specific examples thereof include 1,2-cyclohexanediol, 1,3-cyclohexanediol, 1,4-cyclohexanediol, 2-methyl-1,4-cyclohexanediol, and the like.

As tricyclodecanediol and pentacyclopentadecanediol, which are alicyclic dihydroxy compounds represented by the above general formula (III), in general formula (III), R ² represents the following general formula (IIIb) (wherein n Is represented by 0 or 1).

As decalin diol or tricyclotetradecane diol which is an alicyclic dihydroxy compound represented by the above general formula (III), in general formula (III), R ² is represented by the following general formula (IIIc) (where m is It represents 0 or 1). Specifically, 2,6-decalindiol, 1,5-decalindiol, 2,3-decalindiol and the like are used as such.

The norbornanediol which is an alicyclic dihydroxy compound represented by the above general formula (III) includes various isomers in which R ² is represented by the following general formula (IIId) in the general formula (III). Specifically, 2,3-norbornanediol, 2,5-norbornanediol, and the like are used as such.

The adamantanediol which is an alicyclic dihydroxy compound represented by the above general formula (III) includes various isomers in which R ² is represented by the following general formula (IIIe) in the general formula (III). Specifically, 1,3-adamantanediol etc. are used as such.

  Among the specific examples of the alicyclic dihydroxy compounds described above, cyclohexane dimethanols, tricyclodecane dimethanols, adamantane diols, and pentacyclopentadecane dimethanols are particularly preferable, and are easily available and easy to handle. From this viewpoint, 1,4-cyclohexanedimethanol, 1,3-cyclohexanedimethanol, 1,2-cyclohexanedimethanol, and tricyclodecane dimethanol are preferable.

  In addition, the said exemplary compound is an example of the alicyclic dihydroxy compound which can be used for this invention, Comprising: It is not limited to these at all. These alicyclic diol compounds may be used individually by 1 type, and 2 or more types may be mixed and used for them.

In the polycarbonate resin used in the present invention, the content ratio of the structural unit derived from the dihydroxy compound represented by the general formula (4) and the structural unit derived from the alicyclic dihydroxy compound is not particularly limited, and is arbitrary. You can select by percentage.
This content is usually (constituent unit derived from dihydroxy compound represented by general formula (4)): (constituent unit derived from alicyclic dihydroxy compound) = (1:99) to (99: 1). (Mol%), in particular (structural unit derived from dihydroxy compound represented by general formula (4)): (structural unit derived from alicyclic dihydroxy compound) = (10:90) to (90:10) (Mol%) is preferred.
If the structural unit derived from the dihydroxy compound represented by the general formula (4) is excessively larger than the above range and the structural unit derived from the alicyclic dihydroxy compound is excessively small, the polycarbonate resin tends to be colored. . Conversely, if the number of structural units derived from the dihydroxy compound represented by the general formula (4) is excessively small and the number of structural units derived from the alicyclic dihydroxy compound is excessively large, the molecular weight of the polycarbonate resin tends not to increase. is there.

(Other dihydroxy compounds)
In addition, the polycarbonate resin used by this invention may contain the structural unit derived from other dihydroxy compounds other than the dihydroxy compound represented by General formula (4), and the alicyclic dihydroxy compound mentioned above.

Examples of such other dihydroxy compounds include aliphatic dihydroxy compounds, oxyalkylene glycols, bisphenols, and diols having a cyclic acetal structure.
Examples of the aliphatic dihydroxy compound include ethylene glycol, 1,3-propanediol, 1,2-propanediol, 1,4-butanediol, 1,3-butanediol, 1,2-butanediol, 1,5 -Heptanediol, 1,6-hexanediol, etc. are mentioned.

  Examples of the bisphenol include 2,2-bis (4-hydroxyphenyl) propane [= bisphenol A], 2,2-bis (4-hydroxy-3,5-dimethylphenyl) propane, and 2,2-bis (4 -Hydroxy-3,5-diethylphenyl) propane, 2,2-bis (4-hydroxy- (3,5-diphenyl) phenyl) propane, 2,2-bis (4-hydroxy-3,5-dibromophenyl) Propane, 2,2-bis (4-hydroxyphenyl) pentane, 2,4′-dihydroxy-diphenylmethane, bis (4-hydroxyphenyl) methane, bis (4-hydroxy-5-nitrophenyl) methane, 1,1- Bis (4-hydroxyphenyl) ethane, 3,3-bis (4-hydroxyphenyl) pentane, 1,1-bis (4-hydride) Kishifeniru) cyclohexane.

  Further, examples of bisphenol include bis (4-hydroxyphenyl) sulfone, 2,4′-dihydroxydiphenylsulfone, bis (4-hydroxyphenyl) sulfide, 4,4′-dihydroxydiphenyl ether, 4,4′-dihydroxy- 3,3′-dichlorodiphenyl ether, 4,4′-dihydroxy-2,5-diethoxydiphenyl ether, 9,9-bis (4- (2-hydroxyethoxy) phenyl) fluorene, 9,9-bis (4- ( 2-hydroxyethoxy-2-methyl) phenyl) fluorene, 9,9-bis (4-hydroxyphenyl) fluorene, 9,9-bis (4-hydroxy-2-methylphenyl) fluorene.

Examples of the diol having a cyclic acetal structure include spiro glycol and dioxane glycol.
These other dihydroxy compounds can be used alone or in combination of two or more.

By using other dihydroxy compounds, effects such as improvement in flexibility, improvement in heat resistance and improvement in moldability can be obtained. However, if the content ratio of structural units derived from other dihydroxy compounds is excessively large, the performance of the original optical characteristics may be deteriorated.
For this reason, in the polycarbonate resin used by this invention, the ratio of the sum total of the dihydroxy compound represented by General formula (4) with respect to all the dihydroxy compounds which comprise polycarbonate resin, and an alicyclic dihydroxy compound is 90 mol% or more. Preferably there is.
In particular, the polycarbonate resin used in the present invention is preferably composed only of the dihydroxy compound represented by the general formula (4) and the alicyclic dihydroxy compound as the dihydroxy compound.

The degree of polymerization of the polycarbonate resin used in the present invention is precisely adjusted to a polycarbonate resin concentration of 1.00 g / dl using a 1: 1 mixed solution of phenol and 1,1,2,2, -tetrachloroethane as a solvent. The reduced viscosity (hereinafter simply referred to as “reduced viscosity of polycarbonate resin”) measured at a temperature of 20.0 ° C. ± 0.1 ° C. is 0.40 dl / g or more, particularly 0.40 dl / g or more. The polymerization degree is preferably 2.0 dl / g or less, more preferably in the range of 0.45 dl / g or more and 1.5 dl / g or less.
If the reduced viscosity of the polycarbonate resin is excessively low, the mechanical strength when molded into a lens or the like tends to decrease. On the other hand, when the reduced viscosity of the polycarbonate resin is excessively large, the fluidity during molding is lowered, the cycle characteristics are lowered, and the birefringence of the molded product tends to increase.

  The Abbe number of the polycarbonate resin used in the present invention is preferably 50 or more, particularly preferably 55 or more. The larger this value, the smaller the chromatic dispersion of the refractive index. For example, the chromatic aberration when used with a single lens is reduced, and a clearer image can be easily obtained. As the Abbe number decreases, the chromatic dispersion of the refractive index increases, and when used with a single lens, chromatic aberration increases and the degree of image blur increases.

  The 5% heat loss temperature of the polycarbonate resin used in the present invention is preferably 340 ° C or higher, particularly preferably 345 ° C or higher. The higher the 5% heat loss temperature, the higher the thermal stability and the higher the heat resistance, and the lower the thermal stability, the lower the thermal stability and the lower the temperature. In addition, the allowable control width at the time of manufacture becomes narrow and difficult to make. In addition, the manufacturing temperature can be increased, and the control range at the time of manufacturing can be widened.

The photoelastic coefficient of the polycarbonate resin used in the present invention is preferably 40 × 10 ⁻¹² Pa ⁻¹ or less, more preferably 20 × 10 ⁻¹² Pa ⁻¹ or less. When the photoelastic coefficient is high, the retardation value of the film formed by melt extrusion, solution casting method, etc. becomes large. The variation becomes even larger. Moreover, when bonding such a phase difference film, not only the desired phase difference is shifted due to the tension during the bonding, but also the phase difference value is likely to change due to shrinkage of the polarizing plate after the bonding. The smaller the photoelastic coefficient, the smaller the variation in phase difference.

The polycarbonate resin used in the present invention preferably has an Izod impact strength of 30 J / m ² or more. The greater the Izod impact strength, the higher the strength of the molded body and the less likely it will break.

The polycarbonate resin used in the present invention has a generated gas amount other than a phenol component per unit area at 110 ° C. (hereinafter sometimes simply referred to as “generated gas amount”) of 5 ng / cm ² or less. Moreover, it is more preferable that the amount of generated gas derived from a dihydroxy compound other than the dihydroxy compound represented by the general formula (4) is 0.5 ng / cm ² or less. The smaller the amount of generated gas, the more the application to the influence of the generated gas, for example, the use of storing electronic parts such as semiconductors, the use of building interior materials, the housing of home appliances, and the like can be applied.
The method for measuring the Abbe number, 5% heat loss temperature, photoelastic coefficient, Izod impact strength, and generated gas amount of the polycarbonate resin used in the present invention is specifically as shown in the section of the examples described later. .

  The polycarbonate resin used in the present invention has a single glass transition temperature as measured by a differential scanning calorimeter (DSC). The polycarbonate resin used in the present invention has a glass transition temperature of 45 ° C. according to the use by adjusting the kind and blending ratio of the dihydroxy compound and the alicyclic dihydroxy compound represented by the general formula (4). It can be obtained as a polymer having an arbitrary glass transition temperature in the range of about 155 ° C.

For example, in a film application where flexibility is required, the glass transition temperature of the polycarbonate resin is preferably adjusted to 45 ° C. or higher, for example, 45 to 100 ° C.
In particular, for molded articles such as bottles and packs that require heat resistance, the glass transition temperature of the polycarbonate resin is preferably adjusted to 90 ° C or higher, for example, 90 to 130 ° C.
Furthermore, when the glass transition temperature is 120 ° C. or higher, it is suitable for lens use as an optical component. That is, by using a polycarbonate resin having such a glass transition temperature, it is possible to obtain a lens that hardly deforms and has little variation in surface accuracy even under high temperature and high humidity conditions such as a temperature of 85 ° C. and a relative humidity of 85%. it can.

(Production method of polycarbonate resin)
The polycarbonate resin used in the present invention can be produced by a conventionally known polymerization method. As a polymerization method, any of a solution polymerization method using phosgene and a melt polymerization method in which a carbonic acid diester and a hydroxy compound are reacted may be used.
Of these, a melt polymerization method in which the dihydroxy compound having the above-mentioned bond structure of the structural formula (1) and another dihydroxy compound used as necessary is reacted with a carbonic acid diester in the presence of a polymerization catalyst is preferable.

(Carbonated diester)
Examples of the carbonic acid diester used in the melt polymerization method include those represented by the following general formula (3). These carbonic acid diesters may be used alone or in combination of two or more.

(In the general formula ^{(3), A 1, A} 2 is an aromatic group which may have an aliphatic group or a substituent having 1 to 18 carbon atoms which may have a substituent, A ¹ and A ² may be the same or different.)

Examples of the carbonic acid diester represented by the general formula (3) include substituted diphenyl carbonates such as diphenyl carbonate and ditolyl carbonate; dimethyl carbonate, diethyl carbonate and di-t-butyl carbonate.
Among these, diphenyl carbonate and substituted diphenyl carbonate are preferable, and diphenyl carbonate is particularly preferable.

In the above-described melt polymerization method, the carbonic acid diester represented by the general formula (3) is 0.90 to 1.10 with respect to all dihydroxy compounds including the dihydroxy compound having the bond structure of the structural formula (1) used in the reaction. It is preferably used at a molar ratio of 0.96 to 1.04, more preferably at a molar ratio of 0.96 to 1.04.
When the molar ratio of the carbonic diester used in the melt polymerization method is too small, the terminal OH group of the produced polycarbonate resin increases, the thermal stability of the polymer deteriorates, and the desired high molecular weight product tends not to be obtained. There is. On the other hand, when the molar ratio of the carbonic acid diester used is excessively large, the rate of the transesterification reaction decreases under the same polymerization conditions, and it tends to be difficult to produce a polycarbonate resin having a desired molecular weight. Furthermore, the amount of carbonic acid diester remaining in the produced polycarbonate resin tends to increase, and the residual carbonic acid diester tends to cause an odor during molding or a molded product.

From such a viewpoint, the polycarbonate resin used in the present invention preferably has a residual content of the dihydroxy compound having a bond structure represented by the structural formula (1) of 60 ppm or less, more preferably 50 ppm or less, and 30 ppm. It is particularly preferred that
If the residual content of the dihydroxy compound having the bond structure of the structural formula (1) in the polycarbonate resin is excessively large, the thermal stability of the polymer deteriorates and the amount of deposits on the mold during injection molding increases. When extruding a sheet or film, the surface appearance may be impaired due to an increase in the amount of roll deposits.

In the polycarbonate resin used in the present invention, the residual content of the carbonic acid diester represented by the general formula (3) is preferably 60 ppm or less, more preferably 0.1 ppm or more and 60 ppm or less. 1 ppm or more and 50 ppm or less is more preferable, and 0.1 ppm or more and 30 ppm or less is particularly preferable.
When the content of the carbonic acid diester represented by the general formula (3) in the polycarbonate resin is excessively large, the deposit on the mold at the time of injection molding or the roll deposit when the sheet or film is extruded. The surface appearance may be impaired by increasing the amount of.

(End group structure of polycarbonate resin)
As described above, in the method for producing the polycarbonate resin used in the present invention, it is preferable to use diphenyl carbonate as the carbonic acid diester. In this case, the total number of terminals (B) of the number of existing terminal groups (A) of the terminal group represented by the following structural formula (2) (hereinafter sometimes referred to as “phenyl group terminal”) of the polycarbonate resin to be produced. The ratio (A / B) to is preferably in the range of 20% or more.
Further, the ratio (A / B) of the number of phenyl group terminals (A) in the polycarbonate resin to the total number of terminals (B) is more preferably in the range of 25% or more, and in the range of 30% or more. Is particularly preferred.
If the ratio (A / B) of the number of phenyl group terminals (A) to the total number of terminals (B) is excessively small, the coloration will increase under conditions where the polymerization reaction temperature, injection molding temperature, etc. are high. there is a possibility.

The method for adjusting the ratio (A / B) of the number of phenyl group terminals (A) in the polycarbonate resin to the total number of terminals (B) is not particularly limited, but for example, carbonic acid with respect to all dihydroxy compounds used in the reaction. Adjust the amount ratio of diester within a range where a desired high molecular weight product can be obtained, remove residual monomer from the reaction system by degassing at the latter stage of the polymerization reaction, increase the stirring efficiency of the reactor at the latter stage of the polymerization reaction, etc. Thus, by increasing the reaction rate, the ratio (A / B) of the number of existing phenyl groups (A) to the total number of terminals (B) can be adjusted to the above-described range.
The proportion of the phenyl group terminal in the polycarbonate resin can be calculated by measuring ¹ H-NMR spectrum using deuterated chloroform to which TMS is added as a measurement solvent with an NMR spectrometer.

  In addition, the usage rate of the dihydroxy compound which has the coupling | bonding structure of Structural formula (1), an alicyclic dihydroxy compound, and the other dihydroxy compound used as needed is each which comprises the polycarbonate resin used by this invention. It adjusts suitably according to the ratio of the structural unit originating in a dihydroxy compound.

(Polymerization catalyst)
As a polymerization catalyst (transesterification catalyst) in melt polymerization, an alkali metal compound and / or an alkaline earth metal compound is used. It is also possible to use a basic compound such as a basic boron compound, a basic phosphorus compound, a basic ammonium compound, and an amine compound together with an alkali metal compound and / or an alkaline earth metal compound. It is particularly preferred to use only alkali metal compounds and / or alkaline earth metal compounds.

  Examples of the alkali metal compound used as the polymerization catalyst include sodium hydroxide, potassium hydroxide, lithium hydroxide, cesium hydroxide, sodium hydrogen carbonate, potassium hydrogen carbonate, lithium hydrogen carbonate, cesium hydrogen carbonate, sodium carbonate, potassium carbonate. , Lithium carbonate, cesium carbonate, sodium acetate, potassium acetate, lithium acetate, cesium acetate, sodium stearate, potassium stearate, lithium stearate, cesium stearate, sodium borohydride, potassium borohydride, lithium borohydride, Cesium borohydride, sodium phenyl borohydride, potassium phenyl borohydride, lithium phenyl borohydride, cesium phenyl borohydride, sodium benzoate, potassium benzoate, lithium benzoate, benzoic acid Cium, 2 sodium hydrogen phosphate, 2 potassium hydrogen phosphate, 2 lithium hydrogen phosphate, 2 cesium hydrogen phosphate, 2 sodium phenyl phosphate, 2 potassium phenyl phosphate, 2 lithium phenyl phosphate, 2 cesium phenyl phosphate, Sodium, potassium, lithium, cesium alcoholate, phenolate, disodium salt of bisphenol A, 2 potassium salt, 2 lithium salt, 2 cesium salt and the like.

  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 and the like. These alkali metal compounds and / or alkaline earth metal compounds may be used alone or in combination of two or more.

  Specific examples of basic boron compounds used in combination with alkali metal compounds and / or alkaline earth metal compounds include tetramethyl boron, tetraethyl boron, tetrapropyl boron, tetrabutyl boron, trimethylethyl boron, trimethylbenzyl boron, trimethylphenyl Boron, triethylmethylboron, triethylbenzylboron, triethylphenylboron, tributylbenzylboron, tributylphenylboron, tetraphenylboron, benzyltriphenylboron, methyltriphenylboron, butyltriphenylboron, sodium salt, potassium salt, lithium salt , Calcium salt, barium salt, magnesium salt, or strontium salt.

  Examples of the basic phosphorus compound include triethylphosphine, tri-n-propylphosphine, triisopropylphosphine, tri-n-butylphosphine, triphenylphosphine, tributylphosphine, and quaternary phosphonium salts.

  Examples of the basic ammonium compound include tetramethylammonium hydroxide, tetraethylammonium hydroxide, tetrapropylammonium hydroxide, tetrabutylammonium hydroxide, trimethylethylammonium hydroxide, trimethylbenzylammonium hydroxide, trimethylphenylammonium hydroxide, Triethylmethylammonium hydroxide, triethylbenzylammonium hydroxide, triethylphenylammonium hydroxide, tributylbenzylammonium hydroxide, tributylphenylammonium hydroxide, tetraphenylammonium hydroxide, benzyltriphenylammonium hydroxide, methyltriphenylammonium hydroxide Sid, butyl triphenyl ammonium hydroxide, and the like.

  Examples of the amine compound include 4-aminopyridine, 2-aminopyridine, N, N-dimethyl-4-aminopyridine, 4-diethylaminopyridine, 2-hydroxypyridine, 2-methoxypyridine, 4-methoxypyridine, 2 -Dimethylaminoimidazole, 2-methoxyimidazole, imidazole, 2-mercaptoimidazole, 2-methylimidazole, aminoquinoline and the like. These basic compounds may be used alone or in combination of two or more.

  When using an alkali metal compound and / or an alkaline earth metal compound, the amount of the polymerization catalyst used is usually in the range of 0.1 to 100 μmol as a metal conversion amount with respect to 1 mol of all dihydroxy compounds used in the reaction. Is preferably used within the range of 0.5 to 50 μmol, and more preferably within the range of 1 to 25 μmol. When the amount of the polymerization catalyst used is excessively small, there is a tendency that the polymerization activity necessary for producing a polycarbonate resin having a desired molecular weight cannot be obtained. On the other hand, if the amount of the polymerization catalyst used is excessive, the hue of the resulting polycarbonate resin deteriorates, and by-products are generated, resulting in a decrease in fluidity and the generation of gels. Resin production tends to be difficult.

  In the production of the polycarbonate resin used in the present invention, the dihydroxy compound having the bond structure of the structural formula (1) described above may be supplied as a solid, heated and supplied in a molten state, or an aqueous solution. You may supply as.

  The alicyclic dihydroxy compound may also be supplied as a solid, heated and supplied in a molten state, or may be supplied as an aqueous solution as long as it is soluble in water. The same applies to other dihydroxy compounds. When these raw material dihydroxy compounds are supplied in a molten state or in an aqueous solution, there is an advantage that they can be easily measured and transported when industrially produced.

In the present invention, a method of reacting a dihydroxy compound having a bond structure of the structural formula (1), an alicyclic dihydroxy compound and another dihydroxy compound used as necessary with a carbonic acid diester in the presence of a polymerization catalyst, Usually, it is performed in a multistage process of two or more stages.
Specifically, the first stage reaction is carried out at a temperature of 140 to 220 ° C., preferably 150 to 200 ° C. for 0.1 to 10 hours, preferably 0.5 to 3 hours. In the second and subsequent stages, the reaction temperature is raised while gradually reducing the pressure of the reaction system from the pressure in the first stage, and the aromatic monohydroxy compound such as phenol that is generated at the same time is removed from the reaction system. Specifically, the pressure of the reaction system is 200 Pa or less, and the polycondensation reaction is performed under a temperature range of 210 to 280 ° C.

In the pressure reduction in the polycondensation reaction, it is important to control the balance between temperature and pressure in the reaction system. In particular, if either one of the temperature and the pressure is changed excessively quickly, unreacted monomers are distilled out, the molar ratio of the dihydroxy compound and the carbonic acid diester is changed, and the degree of polymerization may be lowered.
For example, when isosorbide and 1,4-cyclohexanedimethanol are used as the dihydroxy compound, 1,4-cyclohexanedimethanol is used when the molar ratio of 1,4-cyclohexanedimethanol to the total dihydroxy compound is 50 mol% or more. Since methanol easily distills out as a monomer, the reaction is carried out under a reduced pressure of about 13 kPa while the temperature is increased at a rate of temperature increase of 40 ° C. or less per hour, and further up to about 6.67 kPa. When the temperature is increased at a temperature increase rate of 40 ° C. or less per hour under the pressure of, and finally the polycondensation reaction is performed at a temperature of 200 to 250 ° C. at a pressure of 200 Pa or less, the degree of polymerization is sufficiently increased. The obtained polycarbonate resin is preferable.

  When the molar ratio of 1,4-cyclohexanedimethanol is less than 50 mol% with respect to all dihydroxy compounds, particularly when the molar ratio is 30 mol% or less, the mole of 1,4-cyclohexanedimethanol Compared with the case where the ratio is 50 mol% or more, the viscosity increases rapidly. For example, until the pressure in the reaction system is reduced to about 13 kPa, the temperature is increased at a rate of temperature increase of 40 ° C. or less per hour. The reaction is further performed at a pressure up to about 6.67 kPa at a temperature rising rate of 40 ° C. or more per hour, preferably 50 ° C. or more per hour. In particular, it is preferable to perform the polycondensation reaction at a temperature of 220 to 290 ° C. under a reduced pressure of 200 Pa or less because a polycarbonate resin having a sufficiently increased degree of polymerization can be obtained. The type of reaction may be any of batch type, continuous type, or a combination of batch type and continuous type.

(Aromatic monohydroxy compound content)
In the polycondensation reaction between the dihydroxy compound and the carbonic acid diester described above, an aromatic monohydroxy compound that may have an alkyl group having 5 or less carbon atoms is generated as a by-product.
In the present embodiment, the content of the aromatic monohydroxy compound that may have an alkyl group having 5 or less carbon atoms contained in the polycarbonate resin is preferably 700 ppm or less, and the content is 500 ppm or less. More preferably, the content is particularly preferably 300 ppm or less.
However, the polycarbonate resin used in the present invention contains about 10 ppm of the aromatic monohydroxy compound as an unavoidable remaining amount.

Here, the aromatic monohydroxy compound which may have an alkyl group having 5 or less carbon atoms excludes an antioxidant such as hindered phenol, which is added to the polycarbonate resin, as will be described later. Is meant to do.
Specific examples of the aromatic monohydroxy compound which may have an alkyl group having 5 or less carbon atoms include, for example, phenol, cresol, t-butylphenol, on-butylphenol, mn-butylphenol, p- n-butylphenol, o-isobutylphenol, m-isobutylphenol, p-isobutylphenol, ot-butylphenol, mt-butylphenol, pt-butylphenol, on-pentylphenol, mn-pentylphenol , Pn-pentylphenol, 2,6-di-t-butylphenol, 2,5-di-t-butylphenol, 2,4-di-t-butylphenol, 3,5-di-t-butylphenol, etc. It is done.

The method for adjusting the content of the aromatic monohydroxy compound that may have an alkyl group having 5 or less carbon atoms contained in the polycarbonate resin to 700 ppm or less is not particularly limited, but the following methods are usually mentioned. .
For example, in the polycondensation reaction, the charge ratio of the dihydroxy compound and the carbonic acid diester is brought close to 1, the polycondensation reaction is increased, and the aromatic monohydroxy compound is efficiently discharged out of the reactor in which the polycondensation reaction is performed. In the latter half of the polycondensation reaction, degassing using a horizontal reactor while applying a predetermined shearing force to the high-viscosity reaction solution, azeotropic distillation of water and the above-mentioned aromatic monohydroxy compound by water injection devolatilization, etc. .

  In the polycarbonate resin used in the present invention, when the content of the aromatic monohydroxy compound which may have an alkyl group having 5 or less carbon atoms is excessively large, the color tone and transparency are impaired, for example, an optical material. Tends to be an inappropriate material. Moreover, heat resistance falls and there exists a tendency for a color tone to deteriorate over time.

[2] Polycarbonate resin composition A polycarbonate resin composition can be prepared by using the polycarbonate resin used in the present invention and blending it with an acidic compound and a phosphorus compound.
Here, the compounding amount of each compounding agent is 0.00001 part by weight or more and 0.1 part by weight or less, preferably 0.0001 part by weight or more and 0.01 part by weight or more with respect to 100 parts by weight of the polycarbonate resin. Parts by weight or less, more preferably 0.0002 parts by weight or more and 0.001 parts by weight or less, and at least one phosphorus compound 0.001 part by weight or more and 1 part by weight or less, preferably 0.001 part by weight or more and 0 or less. .1 part by weight or less, more preferably 0.001 part by weight or more and 0.05 part by weight or less.
If the blending amount of the acidic compound is too small, there may be a case where coloring when the resin residence time becomes long cannot be sufficiently suppressed during injection molding. Moreover, when there are too many compounding quantities of an acidic compound, the hydrolysis resistance of resin may fall remarkably.
If the amount of the phosphorus compound is excessively small, it may not be possible to sufficiently suppress coloring when the resin residence time is long during injection molding. Moreover, when there are too many compounding quantities of a phosphorus compound, the hydrolysis resistance of resin may fall remarkably.

(Acidic compounds)
Examples of acidic compounds include hydrochloric acid, nitric acid, boric acid, sulfuric acid, sulfurous acid, phosphoric acid, phosphorous acid, hypophosphorous acid, polyphosphoric acid, adipic acid, ascorbic acid, aspartic acid, azelaic acid, adenosine phosphoric acid, benzoic acid Acid, formic acid, valeric acid, citric acid, glycolic acid, glutamic acid, glutaric acid, cinnamic acid, succinic acid, acetic acid, tartaric acid, oxalic acid, p-toluenesulfinic acid, p-toluenesulfonic acid, naphthalenesulfonic acid, nicotinic acid , Bronsted acids such as picric acid, picolinic acid, phthalic acid, terephthalic acid, propionic acid, benzenesulfinic acid, benzenesulfonic acid, malonic acid, maleic acid, and esters thereof. Among these acidic compounds or derivatives thereof, sulfonic acids or esters thereof are preferable, and p-toluenesulfonic acid, methyl p-toluenesulfonate, and butyl p-toluenesulfonate are particularly preferable.
These acidic compounds can be added in the production process of the polycarbonate resin as a compound that neutralizes the basic transesterification catalyst used in the polycondensation reaction of the polycarbonate resin described above.

(Phosphorus compounds)
Examples of the phosphorus compound include phosphorous acid, phosphoric acid, phosphonous acid, phosphonic acid, and esters thereof. By adding a phosphorus compound, it is possible to prevent the polycarbonate resin from being colored.
Specific examples of the compound include triphenyl phosphite, tris (nonylphenyl) phosphite, tris (2,4-di-tert-butylphenyl) phosphite, tridecyl phosphite, trioctyl phosphite, and trioctadecyl. Phosphite, didecyl 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 Phosphite, bis (2,4-di-tert-butylphenyl) pentaerythritol diphosphite, distearyl pentaerythritol diphosphite, tributyl phosphate, triethyl phosphate, trimethyl phosphate, triphenyl phosphate, diphenyl monoorthoxenyl phosphate, Examples include dibutyl phosphate, dioctyl phosphate, diisopropyl phosphate, 4,4′-biphenylenediphosphinic acid tetrakis (2,4-di-tert-butylphenyl), benzenephosphonic acid dimethyl, benzenephosphonic acid diethyl, and benzenephosphonic acid dipropyl.

  Among these, trisnonylphenyl phosphite, trimethyl phosphate, tris (2,4-di-tert-butylphenyl) phosphite, bis (2,4-di-tert-butylphenyl) pentaerythritol diphosphite, bis ( 2,6-di-tert-butyl-4-methylphenyl) pentaerythritol diphosphite and dimethyl benzenephosphonate are preferably used. These phosphorus compounds can be used alone or in combination of two or more.

(Other antioxidants)
The polycarbonate resin composition of the present invention may further contain an antioxidant in addition to the acidic compound and phosphorus compound described above.
Examples of the antioxidant include pentaerythritol tetrakis (3-mercaptopropionate), pentaerythritol tetrakis (3-lauryl thiopropionate), glycerol-3-stearyl thiopropionate, 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-tetrakis [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- Lis (3,5-di-tert-butyl-4-hydroxybenzyl) benzene, N, N-hexamethylenebis (3,5-di-tert-butyl-4-hydroxy-hydrocinnamide), 3,5- Di-tert-butyl-4-hydroxy-benzylphosphonate-diethyl ester, tris (3,5-di-tert-butyl-4-hydroxybenzyl) isocyanurate, 4,4′-biphenylenediphosphinic acid tetrakis (2,4- Di-tert-butylphenyl), 3,9-bis {1,1-dimethyl-2- [β- (3-tert-butyl-4-hydroxy-5-methylphenyl) propionyloxy] ethyl} -2,4 , 8,10-tetraoxaspiro (5,5) undecane and the like.

Among these acidic compounds, aromatic monohydroxy compounds substituted with one or more alkyl groups having 5 or more carbon atoms are preferable. Specifically, octadecyl-3- (3,5-di-tert-butyl-4 -Hydroxyphenyl) propionate, pentaerythritol-tetrakis {3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate}, 1,6-hexanediol-bis [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 and the like are preferable.
The amount of the aromatic monohydroxy compound substituted by one or more alkyl groups having 5 or more carbon atoms further blended in the polycarbonate resin composition is 0.001 of the above aromatic monohydroxy compound relative to 100 parts by weight of the polycarbonate resin. From 1 part by weight to 1 part by weight, preferably from 0.01 part by weight to 0.5 part by weight, and more preferably from 0.02 part by weight to 0.3 part by weight.
When the blending amount of the antioxidant is excessively small, the coloring suppression effect at the time of molding may be insufficient. Also, if the amount of the antioxidant is excessively large, the amount of deposits on the mold during injection molding increases or the number of deposits on the roll increases when forming a film by extrusion. The surface appearance of the product may be damaged.

  Further, the polycarbonate resin composition of the present invention may contain a release agent within a range not impairing the object of the present invention in order to further improve the releasability from the mold during melt molding. Examples of such release agents include higher fatty acids, higher fatty acid esters of mono- or polyhydric alcohols, natural animal waxes such as beeswax, natural plant waxes such as carnauba wax, natural petroleum waxes such as paraffin wax, and montan. Examples thereof include natural coal wax such as wax, olefin wax, silicone oil, organopolysiloxane and the like.

  The higher fatty acid ester is preferably a partial ester or a total ester of a monovalent or polyhydric alcohol having 1 to 20 carbon atoms and a saturated fatty acid having 10 to 30 carbon atoms. Such partial esters or total esters of monohydric or polyhydric alcohols and saturated fatty acids include stearic acid monoglyceride, stearic acid diglyceride, stearic acid triglyceride, stearic acid monosorbite, stearyl stearate, behenic acid monoglyceride, behenyl behenate, Pentaerythritol monostearate, pentaerythritol tetrastearate, pentaerythritol tetrapelargonate, propylene glycol monostearate, stearyl stearate, palmityl palmitate, butyl stearate, methyl laurate, isopropyl palmitate, biphenyl biphenate Sorbitan monostearate, 2-ethylhexyl stearate and the like. Of these, stearic acid monoglyceride, stearic acid triglyceride, pentaerythritol tetrastearate, and behenyl behenate are preferably used.

  As the higher fatty acid, a saturated fatty acid having 10 to 30 carbon atoms is preferable. Examples of such saturated fatty acids include myristic acid, lauric acid, palmitic acid, stearic acid, behenic acid and the like. One of these release agents may be used alone, or two or more thereof may be mixed and used. The content of the release agent is preferably 0.0001 to 2 parts by mass with respect to 100 parts by mass of the polycarbonate resin.

  The polycarbonate resin composition of the present invention can contain an antistatic agent as long as the object of the present invention is not impaired. Examples of the antistatic agent include polyether ester amide, glycerin monostearate, ammonium dodecylbenzenesulfonate, phosphonium dodecylbenzenesulfonate, maleic anhydride monoglyceride, maleic anhydride diglyceride and the like.

  The polycarbonate resin composition of the present invention can contain an ultraviolet absorber and a light stabilizer as long as the object of the present invention is not impaired. Specifically, for example, 2- (2′-hydroxy-5′-t-octylphenyl) benzotriazole, 2- (3-t-butyl-5-methyl-2-hydroxyphenyl) -5-chlorobenzotriazole 2- (2′-hydroxy-5-methylphenyl) benzotriazole, 2- [2-hydroxy-3,5-bis (α, α-dimethylbenzyl) phenyl] -2H-benzotriazole, 2,2′- p-phenylenebis (1,3-benzoxazin-4-one) and the like. The content of the stabilizer is preferably 0.01 to 2 parts by mass with respect to 100 parts by mass of the polycarbonate resin.

  In the polycarbonate resin used in the present invention, a bluing agent can be blended in order to cancel the yellowishness of the lens based on the polymer or the ultraviolet absorber. As the bluing agent, any conventional bluing agent can be used as long as it is used for polycarbonate resin. In general, anthraquinone dyes are preferred because they are readily available.

As a specific bluing agent, for example, the general name Solvent Violet 13 [CA. No (color index No) 60725], generic name Solvent Violet 31 [CA. No 68210], common name Solvent Violet 33 [CA. No. 60725], generic name Solvent Blue 94 [CA. No 61500], generic name Solvent Violet 36 [CA. No. 68210], general name Solvent Blue 97 [manufactured by Bayer "Macrolex Violet RR"], general name Solvent Blue 45 [CA. No. 61110] and the like are given as representative examples. These bluing agents may be used individually by 1 type, and may use 2 or more types together. These bluing agents are usually blended at a ratio of 0.1 × 10 ⁻⁵ to 2 × 10 ⁻⁴ parts by weight when the polycarbonate resin is 100 parts by weight.

  The polycarbonate resin composition of the present invention can be produced by mixing the above components simultaneously or in any order with a mixer such as a tumbler, V-type blender, nauter mixer, Banbury mixer, kneading roll, or extruder. . Furthermore, a nucleating agent, a flame retardant, an inorganic filler, an impact modifier, a foaming agent, a dye / pigment and the like that are usually used in the resin composition may be contained within a range not impairing the object of the present invention.

  In the present embodiment, a polycarbonate resin molded product obtained by molding the above-described polycarbonate resin or polycarbonate resin composition is obtained. The method for molding the polycarbonate resin molded product is not particularly limited, but the injection molding method is preferable.

[3] Optical film An optical film can be obtained by forming a film using the polycarbonate resin of the present invention. Moreover, a retardation film can be manufactured by extending | stretching this optical film formed into a film. Examples of the film forming method include conventionally known melt extrusion methods and solution casting methods.

  In addition to the polycarbonate resin of the present invention, other polycarbonate resins obtained from bisphenol A, bisphenol Z, etc., 9,9-bis (4-hydroxyphenyl) fluorene, 9,9-bis are used as raw materials for the optical film described above. Polycarbonate resins and polyester resins modified with (3-methyl-4-hydroxyphenyl) fluorene, 9,9-bis (3-ethyl-4-hydroxyphenyl) fluorene, polyethylene terephthalate, polybutylene terephthalate, polynaphthalene dicarboxylate It may be a composition with one or more of other resins such as a polyester resin such as rate, polycyclohexanedimethylenecyclohexanedicarboxylate, polycyclohexanedimethylene terephthalate.

The retardation film is a retardation film composed of a single polymer orientation film, which satisfies the following conditions (i) to (iv), and has a characteristic that the retardation at wavelengths from 450 nm to 630 nm is larger toward the longer wavelength side. It is.
(I) Polymer monomer unit having positive refractive index anisotropy (hereinafter referred to as “first monomer unit”) and polymer monomer unit having negative refractive index anisotropy (hereinafter referred to as “second monomer unit”). A monomer unit))), and
(Ii) Re450 / Re550 of the polymer based on the first monomer unit is smaller than Re450 / Re550 of the polymer based on the second monomer unit (where “Re450” means “the polymer at a wavelength of 450 nm” "Re550" indicates "the phase difference of the polymer at a wavelength of 550".)
(Iii) has a positive refractive index anisotropy;
(Iv) It is comprised from the polymer whose absolute value of a photoelastic coefficient is 20 * 10 <^-12> Pa <^-1> or less.
By using the polycarbonate resin of the present invention, the above conditions can be easily realized.

  The thickness of the optical film is usually 30 μm to 200 μm, preferably 50 μm to 150 μm. Further, the retardation value of the film formed is preferably 20 nm or less, more preferably 10 nm or less. When the retardation value of the film is excessively large, the in-plane variation of the retardation value tends to increase when the film is stretched to obtain a retardation film.

As the stretching method of the optical film, a known stretching method such as uniaxial stretching in either the longitudinal direction or the lateral direction or biaxial stretching in which the stretching is performed in the longitudinal and lateral directions can be used. It is also possible to control the three-dimensional refractive index of the film by performing special biaxial stretching.
The stretching conditions for producing the retardation film are preferably performed in the range of −20 ° C. to + 40 ° C. of the glass transition temperature of the film raw material. More preferably, it is the range of -10 degreeC to +20 degreeC of the glass transition temperature of a film raw material. If the stretching temperature is excessively lower than the glass transition temperature of the polycarbonate resin, the retardation of the stretched film becomes large, and in order to obtain the desired retardation, the stretching ratio must be lowered, and the retardation of the in-plane retardation of the film is increased. The variation tends to increase. On the other hand, if the stretching temperature is excessively higher than the glass transition temperature, the phase difference of the resulting film becomes small, and the stretching ratio for obtaining a desired retardation has to be increased, and the appropriate stretching condition width tends to be narrowed. There is.

  The retardation film can be used as a retardation plate for various liquid crystal display devices. When the retardation film is used for color compensation of the STN liquid crystal display device, the retardation value is generally selected in the range from 400 nm to 2000 nm. When the retardation film is used as a half-wave plate, the retardation value is selected in the range of 200 nm to 400 nm. When the retardation film is used as a quarter wavelength plate, the retardation value is selected in the range from 90 nm to 200 nm. A more preferable retardation value as a quarter wavelength plate is from 100 nm to 180 nm. A phase difference film can also be used independently, can also be used in combination of 2 or more sheets, and can also be used in combination with another film etc.

  The retardation film can be laminated and bonded via a known iodine-based or dye-based polarizing plate and an adhesive. When laminating, it is necessary to laminate the polarizing axis of the polarizing plate and the slow axis of the retardation film at a specific angle depending on the application. Moreover, a retardation film can be used as a quarter wave plate, and this can be laminated and bonded with a polarizing plate and used as a circular polarizing plate. In that case, in general, the polarizing axis of the polarizing plate and the slow axis of the retardation film are laminated while maintaining a relative angle of substantially 45 °. Furthermore, you may laminate | stack using a retardation film as a polarizing protective film which comprises a polarizing plate. Furthermore, the retardation film can be used as a color compensation plate of an STN liquid crystal display device, and can be used as an elliptically polarizing plate by laminating and laminating this with a polarizing plate.

[4] Inorganic filler Moreover, the polycarbonate resin composition which mix | blended the inorganic filler with this using the polycarbonate resin used by this invention is prepared. The compounding amount of the inorganic filler is 1 part by weight or more and 100 parts by weight or less, preferably 3 parts by weight or more and 50 parts by weight or less with respect to 100 parts by weight of the polycarbonate resin. When the blending amount of the inorganic filler is excessively small, the reinforcing effect is small, and when it is excessively large, the appearance tends to deteriorate.

  Examples of the inorganic filler include glass fiber, glass milled fiber, glass flake, glass bead, carbon fiber, silica, alumina, titanium oxide, calcium sulfate powder, gypsum, gypsum whisker, barium sulfate, talc, mica, and wallast. Calcium silicate such as knight; carbon black, graphite, iron powder, copper powder, molybdenum disulfide, silicon carbide, silicon carbide fiber, silicon nitride, silicon nitride fiber, brass fiber, stainless steel fiber, potassium titanate fiber, whisker, etc. It is done. Among these, glass fiber filler, glass powder filler, glass flake filler; carbon fiber filler, carbon powder filler, carbon flake filler; various whiskers, mica Talc is preferred. More preferably, glass fiber, glass flake, glass milled fiber, carbon fiber, wollastonite, mica and talc are mentioned.

Among inorganic fillers, any glass fiber or glass milled fiber may be used as long as it is used in thermoplastic resins. In particular, alkali-free glass (E glass) is preferable. The diameter of glass fiber becomes like this. Preferably they are 6 micrometers-20 micrometers, More preferably, they are 9 micrometers-14 micrometers. If the diameter of the glass fiber is too small, the reinforcing effect tends to be insufficient. On the other hand, if it is excessively large, the product appearance is liable to be adversely affected.
The glass fiber is preferably chopped strands cut to a length of 1 mm to 6 mm; preferably glass milled fibers that are commercially available after being pulverized to a length of 0.01 mm to 0.5 mm. You may use these individually or in mixture of both.
The glass fiber used in the present invention is made of an acrylic resin or urethane to improve the surface treatment with a silane coupling agent such as aminosilane or epoxysilane, or to improve the handleability in order to improve the adhesion to the polycarbonate resin. It may be used after being subjected to a bundling treatment with a system resin or the like.

  Any glass beads can be used as long as they are used in thermoplastic resins. Among these, alkali-free glass (E glass) is preferable. The shape of the glass beads is preferably spherical with a particle size of 10 μm to 50 μm.

  As glass flakes, scaly glass flakes can be mentioned. The maximum diameter of the glass flake after blending the polycarbonate resin is generally 1000 μm or less, preferably 1 μm to 500 μm, and the aspect ratio (the ratio of the maximum diameter to the thickness) is 5 or more, preferably 10 or more, Preferably it is 30 or more.

  The carbon fiber is not particularly limited, and is produced by firing using, for example, acrylic fiber, petroleum or carbon-based special pitch, cellulose fiber, lignin or the like as a raw material, such as flame resistance, carbonaceous, and graphite. There are various types. The average of the aspect ratio (fiber length / fiber diameter) of the carbon fibers is preferably 10 or more, more preferably 50 or more. If the average aspect ratio is too small, the conductivity, strength, and rigidity of the polycarbonate resin composition tend to be reduced. The diameter of the carbon fiber is 3 μm to 15 μm, and any shape such as chopped strand, roving strand, milled fiber, etc. can be used to adjust the aspect ratio. Carbon fiber can be used 1 type or in mixture of 2 or more types.

  As long as the properties of the polycarbonate resin composition of the present invention are not impaired, the carbon fiber may be subjected to surface treatment such as epoxy treatment, urethane treatment, oxidation treatment, etc., in order to increase the affinity with the polycarbonate resin.

  In this Embodiment, the addition time of the inorganic filler mix | blended with polycarbonate resin and the addition method are not specifically limited. For example, when the polycarbonate resin is produced by the transesterification method, when the polymerization reaction is completed; the polycarbonate resin melted during mixing of the polycarbonate resin and other compounding agents regardless of the polymerization method. A case where it is blended and kneaded with a polycarbonate resin in a solid state such as pellets or powder using an extruder or the like. As an addition method, a method of directly mixing or kneading an inorganic filler with a polycarbonate resin; a high-concentration master batch prepared by using a small amount of a polycarbonate resin or other resin and an inorganic filler can also be added.

[5] Flame retardant A polycarbonate resin composition in which a flame retardant is blended with the polycarbonate resin used in the present invention is prepared. The blending amount of the flame retardant is selected according to the type of flame retardant and the degree of flame retardancy. In this Embodiment, it is 0.01 weight part-30 weight part of flame retardants with respect to 100 weight part of polycarbonate, Preferably it is the range of 0.02 weight part-25 weight part. By blending a flame retardant, a polycarbonate resin composition having excellent flame retardancy can be obtained.

Examples of the flame retardant include phosphorus-containing compound flame retardants, halogen-containing compound flame retardants, sulfonic acid metal salt flame retardants, and silicon-containing compound flame retardants. In the present embodiment, at least one selected from these groups can be used. These may be used alone or in combination of two or more.
Examples of the phosphorus-containing compound flame retardant include phosphate ester compounds, phosphazene compounds, red phosphorus, coated red phosphorus, polyphosphate compounds, and the like. The amount of the phosphorus-containing compound flame retardant is preferably 0.1 to 20 parts by weight with respect to 100 parts by weight of the polycarbonate. If the blending amount is too small, sufficient flame retardancy is difficult to obtain, and if it is too large, the heat resistance tends to decrease.

  Examples of the halogen-containing compound flame retardant include tetrabromobisphenol A, tribromophenol, brominated aromatic triazine, tetrabromobisphenol A epoxy oligomer, tetrabromobisphenol A epoxy polymer, decabromodiphenyl oxide, tribromoallyl ether, Examples thereof include tetrabromobisphenol A carbonate oligomer, ethylenebistetrabromophthalimide, decabromodiphenylethane, brominated polystyrene, and hexabromocyclododecane.

  The compounding amount of the halogen-containing compound flame retardant is 0.1 to 20 parts by weight with respect to 100 parts by weight of the polycarbonate resin. If the blending amount of the halogen-containing compound-based flame retardant is excessively small, sufficient flame retardancy is difficult to obtain, and if it is excessively large, the mechanical strength is lowered, and the flame retardant may cause discoloration due to bleeding.

  Examples of the sulfonic acid metal salt-based flame retardant include an aliphatic sulfonic acid metal salt, an aromatic sulfonic acid metal salt, a perfluoroalkane-sulfonic acid metal salt, and the like. Preferred examples of the metal of these metal salts include metals of Group 1 of the periodic table and metals of Group 2 of the periodic table. Specifically, alkali metals such as lithium, sodium, potassium, rubidium and cesium; alkaline earth metals such as calcium, strontium and barium; beryllium and magnesium.

Among the sulfonic acid metal salt flame retardants, aromatic sulfonesulfonic acid metal salts, perfluoroalkane-sulfonic acid metal salts, and the like are preferable from the viewpoints of flame retardancy and thermal stability.
The aromatic sulfonesulfonic acid metal salt is preferably an aromatic sulfonesulfonic acid alkali metal salt or an aromatic sulfonesulfonic acid alkaline earth metal salt. These may be polymers. Specific examples of the aromatic sulfonesulfonic acid metal salt include sodium salt of diphenylsulfone-3-sulfonic acid, potassium salt of diphenylsulfone-3-sulfonic acid, and 4,4′-dibromodiphenyl-sulfone-3-sulfone. Sodium salt of acid, potassium salt of 4,4′-dibromodiphenyl-sulfone-3-sulfone, calcium salt of 4-chloro-4′-nitrodiphenylsulfone-3-sulfonic acid, diphenylsulfone-3,3′-disulfonic acid And the dipotassium salt of diphenylsulfone-3,3′-disulfonic acid.

The perfluoroalkane-sulfonic acid metal salt is preferably an alkali metal salt of perfluoroalkane-sulfonic acid, an alkaline earth metal salt of perfluoroalkane-sulfonic acid, or the like. Furthermore, a sulfonic acid alkali metal salt having a C 4-8 perfluoroalkane group, a sulfonic acid alkaline earth metal salt having a C 4-8 perfluoroalkane group, and the like are more preferable.
Specific examples of the perfluoroalkane-sulfonic acid metal salt include, for example, perfluorobutane-sodium sulfonate, perfluorobutane-potassium sulfonate, perfluoromethylbutane-sodium sulfonate, perfluoromethylbutane-potassium sulfonate, Examples include perfluorooctane-sodium sulfonate, potassium perfluorooctane-sulfonate, and tetraethylammonium salt of perfluorobutane-sulfonate.

  The amount of the sulfonic acid metal salt-based flame retardant is preferably 0.01 to 5 parts by weight with respect to 100 parts by weight of the polycarbonate. If the blending amount of the sulfonic acid metal salt flame retardant is excessively small, sufficient flame retardancy is difficult to obtain, and if it is excessively large, the thermal stability tends to be lowered.

  Examples of the silicon-containing compound flame retardant include silicone varnish, a silicone resin in which a substituent bonded to a silicon atom is an aromatic hydrocarbon group and an aliphatic hydrocarbon group having 2 or more carbon atoms, and a main chain having a branched structure. And a silicone compound having an aromatic group in the organic functional group contained therein, a silicone powder carrying a polydiorganosiloxane polymer which may have a functional group on the surface of the silica powder, and an organopolysiloxane-polycarbonate copolymer Etc. Of these, silicone varnish is preferred.

As the silicone varnish, for example, mainly composed of a bifunctional unit [R0 ₂ SiO] and a trifunctional unit [R0SiO _1.5 ], a monofunctional unit [R0 ₃ SiO _0.5 ] and / or a tetrafunctional unit. Examples include relatively low molecular weight solution-like silicone resins that may contain [SiO ₂ ]. Here, R0 is a C1-C12 hydrocarbon group substituted by a C1-C12 hydrocarbon group or one or more substituents. Examples of the substituent include an epoxy group, an amino group, a hydroxyl group, and a vinyl group. By changing the type of R0, the compatibility with the matrix resin can be improved.

Examples of the silicone varnish include a solventless silicone varnish and a silicone varnish containing a solvent. In the present embodiment, a silicone varnish containing no solvent is preferable. The silicone varnish can be produced, for example, by hydrolysis of alkylalkoxysilanes such as alkyltrialkoxysilanes, dialkyldialkoxysilanes, trialkylalkoxysilanes, and tetraalkoxysilanes. The molecular structure (crosslinking degree) and molecular weight can be controlled by adjusting the molar ratio of these raw materials, the hydrolysis rate, and the like. Furthermore, although alkoxysilane remains depending on the production conditions, if it remains in the composition, the hydrolysis resistance of the polycarbonate resin may be lowered.
The viscosity of the silicone varnish is preferably 300 centistokes or less, more preferably 250 centistokes or less, and still more preferably 200 centistokes or less. If the viscosity of the silicone varnish is excessively large, flame retardancy may be insufficient.

  The compounding amount of the silicon-containing compound flame retardant is preferably 0.1 to 10 parts by weight with respect to 100 parts by weight of the polycarbonate resin. If the compounding amount of the silicon-containing compound flame retardant is excessively small, sufficient flame retardancy is difficult to obtain, and if it is excessively large, the heat resistance tends to decrease.

In this embodiment, in order to achieve higher flame retardancy, it is preferable to use polytetrafluoroethylene for preventing dripping. Anti-dripping polytetrafluoroethylene tends to disperse easily in the polymer and bind the polymers together to produce a fibrous material. Examples of commercially available products for preventing dripping include Teflon (registered trademark) 6J, Teflon (registered trademark) 30J (Mitsui / DuPont Fluorochemical Co., Ltd.), Polyflon F201L (Daikin Chemical Industry Co., Ltd.), and the like.
The amount of polytetrafluoroethylene for preventing dripping is preferably 0.01 to 2.0 parts by weight with respect to 100 parts by weight of the polycarbonate resin. When the blending amount of polytetrafluoroethylene for dripping prevention is excessively small, the effect of preventing melt dripping at the time of combustion is insufficient, and when it is excessively large, the appearance of the molded product tends to deteriorate.

  In addition, the polycarbonate resin composition of the present invention can contain various additives in such an amount that the effect is exhibited within a range not impairing the effect of the present invention. Examples of the additive include a stabilizer, an ultraviolet absorber, a release agent, a colorant, and an antistatic agent. In addition, in order to obtain various applications and desired performance, thermoplastic resins such as styrene resins and polyester resins; thermoplastic elastomers; glass fibers, glass flakes, glass beads, carbon fibers, wollastonite, Inorganic fillers such as calcium silicate and aluminum borate whiskers can also be blended.

  There is no particular limitation on the mixing method and mixing timing of the polycarbonate resin and the above additives used in the present embodiment. For example, the mixing timing is during the polymerization reaction or at the end of the polymerization reaction, and further kneading the polycarbonate or the like. It can be added while the polycarbonate in the middle is melted. It is also possible to knead with an extruder or the like after blending with a solid polycarbonate such as pellets or powder.

[6] Ultraviolet absorber In the present embodiment, a polycarbonate resin composition in which an ultraviolet absorber is blended with the polycarbonate resin used in the present invention is prepared. The compounding quantity of a ultraviolet absorber is selected according to the kind of ultraviolet absorber. In this Embodiment, it is 0.005 weight part-5 weight part of ultraviolet absorbers with respect to 100 weight part of polycarbonate.

Here, the ultraviolet absorber is not particularly limited as long as it is a compound having ultraviolet absorbing ability. In the present embodiment, a compound having absorption at a wavelength of 200 nm to 240 nm is preferable. Further, a compound having an extinction coefficient ε with respect to light having a wavelength of 200 nm to 240 nm is greater than 10,000 mL / (g · cm), preferably 15,000 mL / (g · cm) or more.
The absorbance indicating the ultraviolet absorbing ability as the ultraviolet absorber can be measured according to JIS K0115 “General Rules for Spectrophotometric Analysis”. The extinction coefficient ε is expressed as mL / (g · cm) in the present embodiment because it is difficult to express the concentration in terms of moles. Other than that, it conforms to the above JIS K0115.

<Measurement of molar extinction coefficient>
In the present embodiment, the molar extinction coefficient was measured by the following method.
In accordance with JIS K0115 “General spectrophotometric analysis”, about 10 mg of an ultraviolet absorber was dissolved in 10 ml of acetonitrile in a glass bottle. Among them, 0.1 ml was taken into another glass bottle, and further 9.9 ml of acetonitrile was added and dissolved. This solution is put in a quartz cell having an optical path length of 10 mm, and using an ultraviolet-visible spectrophotometer (manufactured by JASCO Corporation, V-570), the measurement mode is Abs, the response is Medium, the measurement wavelength is 190 to 800 nm, and the bandwidth is 2 nm. Absorbance A was measured. The molar extinction coefficient ε was obtained by dividing the absorbance A at each wavelength by the product of the molar concentration c of the solution and the optical path length L of the cell. The molar concentration c of the solvent was obtained by dividing the concentration of the solution by the molecular weight of the ultraviolet absorber. About the molar extinction coefficient ε of the obtained ultraviolet absorber, the ratio (ε ε) between the molar extinction coefficient (ε ₂₁₀ ) at a wavelength of ₂₁₀ nm and the maximum value (ε _250-350 ) of the molar extinction coefficient in the wavelength range of 250 nm to 350 nm. ₂₁₀ / [epsilon] _250-350 ) is preferably less than 1.75 in the present invention, more preferably less than 1.73, and particularly less than 1.72.

In the present embodiment, examples of the compound having ultraviolet absorbing ability include organic compounds and inorganic compounds. Of these, organic compounds are preferred because they are easy to ensure affinity with the polycarbonate resin and are easily dispersed uniformly.
The molecular weight of the organic compound having ultraviolet absorbing ability is not particularly limited. The molecular weight is usually 200 or more, preferably 250 or more. Also. Usually, it is 600 or less, preferably 450 or less, more preferably 400 or less. If the molecular weight is too small, there is a possibility of causing a decrease in UV resistance performance after long-term use. When the molecular weight is excessively large, there is a possibility that the transparency of the resin composition is lowered after long-term use.

  Preferred ultraviolet absorbers include benzotriazole compounds, benzophenone compounds, triazine compounds, benzoate compounds, hindered amine compounds, salicylic acid phenyl ester compounds, cyanoacrylate compounds, malonic acid ester compounds, oxalic acid anilide compounds. Etc. Of these, triazine compounds, malonic ester compounds, and oxalic anilide compounds are preferably used. These may be used alone or in combination of two or more.

  More specific examples of the benzotriazole compounds include 2- (2′-hydroxy-3′-methyl-5′-hexylphenyl) benzotriazole, 2- (2′-hydroxy-3′-t-butyl- 5'-hexylphenyl) benzotriazole, 2- (2'-hydroxy-3 ', 5'-di-t-butylphenyl) benzotriazole, 2- (2'-hydroxy-3'-methyl-5'-t -Octylphenyl) benzotriazole, 2- (2'-hydroxy-5'-t-dodecylphenyl) benzotriazole, 2- (2'-hydroxy-3'-methyl-5'-t-dodecylphenyl) benzotriazole, 2- (2′-hydroxy-5′-t-butylphenyl) benzotriazole, methyl-3- (3- (2H-benzotriazol-2-yl ) -5-t-butyl-4-hydroxyphenyl) propionate and the like.

  Examples of the triazine compound include 2- [4-[(2-hydroxy-3-dodecyloxypropyl) oxy] -2-hydroxyphenyl] -4,6-bis (2,4-dimethylphenyl) -1,3. 5-triazine, 2,4-bis (2,4-dimethylphenyl) -6- (2-hydroxy-4-isooctyloxyphenyl) -s-triazine, 2- (4,6-diphenyl-1,3, 5-triazin-2-yl) -5-[(hexyl) oxy] -phenol (manufactured by Ciba Geigy, Tinuvin 1577FF) and the like.

Examples of hydroxybenzophenone compounds include 2,2′-dihydroxybenzophenone, 2,2 ′, 4,4′-tetrahydroxybenzophenone, 2-hydroxy-4-octoxybenzophenone, and the like.
Examples of the cyanoacrylate compound include ethyl 2-cyano-3,3-diphenyl acrylate, 2′-ethylhexyl-2-cyano-3,3-diphenyl acrylate, and the like.
Examples of the malonic acid ester compounds include 2- (1-arylalkylidene) malonic acid esters. Of these, malonic acid [(4-methoxyphenyl) -methylene] -dimethyl ester (manufactured by Clariant, Hostavin PR-25) and dimethyl 2- (paramethoxybenzylidene) malonate are preferable.
Examples of the oxalic acid anilide compound include 2-ethyl-2′-ethoxy-oxalanilide (manufactured by Clariant, Sanduvor VSU).

  Among these, 2- (2′-hydroxy-3′-t-butyl-5′-hexylphenyl) benzotriazole, 2- (2′-hydroxy-5′-t-butylphenyl) benzotriazole, 2- [ 4-[(2-hydroxy-3-dodecyloxypropyl) oxy] -2-hydroxyphenyl] -4,6-bis (2,4-dimethylphenyl) -1,3,5-triazine, 2,2 ′, 4,4′-tetrahydroxybenzophenone is preferred.

  There are no particular restrictions on the mixing method and mixing time of the polycarbonate resin used in the present embodiment and the above additives. For example, the mixing time can be added while the polycarbonate is melted during the polymerization reaction, at the end of the polymerization reaction, or during the kneading of the polycarbonate or the like. It is also possible to knead with an extruder or the like after blending with a solid polycarbonate such as pellets or powder.

  The polycarbonate resin composition of the present invention can be produced by mixing the above components simultaneously or in any order with a mixer such as a tumbler, V-type blender, nauter mixer, Banbury mixer, kneading roll, or extruder. . Furthermore, a nucleating agent, a flame retardant, an inorganic filler, an impact modifier, a foaming agent, a dye / pigment and the like that are usually used in the resin composition may be contained within a range not impairing the object of the present invention.

[7] Thermoplastic resin In the present embodiment, a polycarbonate resin composition is prepared by blending a thermoplastic resin with the polycarbonate resin used in the present invention. Although the compounding quantity of polycarbonate resin and a thermoplastic resin is not specifically limited, In this Embodiment, it is the range of 10 mass parts-90 mass parts of polycarbonate resin, and 90 mass parts-10 mass parts of thermoplastic resins.

Here, examples of the thermoplastic resin include aromatic polyester resins such as polyethylene terephthalate, polypropylene terephthalate, polybutylene terephthalate, and polycyclohexane dimethanol terephthalate; polylactic acid, polybutylene succinate, and polycyclohexane dimethanol cyclohexane dicarboxyl. Saturated polyester resins such as aliphatic polyester resins such as bisphenols, bisphenol polycarbonate resins composed of various bisphenols such as bisphenol A and bisphenol Z; 3 (4), 8 (9) -bis (hydroxymethyl) tricyclo [5 .2.1.02,6] Cycloaliphatic polycarbonate resin composed of cycloaliphatic diol such as decane; 3,9-bis (1,1-dimethyl-2-hydroxyethyl) -2,4,8,1 -Polycarbonate resins such as aliphatic polycarbonate resins composed of heterocyclic diols such as tetraoxaspiro [5,5] undecane; Aliphatic polyamide resins such as 6, 66, 46, 12; 6T, 6I, 9T, etc. Polyamide resins such as semi-aromatic polyamide resins; polystyrene resins, high impact polystyrene resins, acrylonitrile / styrene resins (AS), acrylonitrile / butadiene / styrene resins (ABS), hydrogenated ABS resins (AES), crystals Styrenic resins such as conductive syndiotactic polystyrene resin; acrylic resins such as PMMA and MBS; low density, medium density and high density polyethylene, ethylene / methacrylate copolymer (EMA), ethylene / vinyl acetate copolymer (EVA) ), Both ethylene / glycidyl methacrylate Copolyethylene resin such as coalescence (E / GMA); (poly) olefin resin such as polypropylene resin, 4-methyl-pentene-1 resin, cycloolefin polymer (COP) and cycloolefin copolymer (COC); polyacetal Resin, Polyamideimide resin, Polyethersulfone resin, Polyimide resin, Polyphenylene oxide resin, Polyphenylene sulfide resin, Polyphenylsulfone resin, Polyetheretherketone resin, Liquid crystalline polyester resin, Thermoplastic polyurethane resin, Polyvinyl chloride resin, Fluorine resin And the like, or a mixture thereof.
These thermoplastic resins may be used singly or in combination of two or more, and appropriately selected from the characteristics such as heat resistance, chemical resistance and moldability required according to the purpose of use. Can do. Further, it may be used after being graft-modified or terminal-modified with an unsaturated compound such as maleic anhydride.

  There is no particular limitation on the mixing method and mixing timing of the polycarbonate resin and the above additives used in the present embodiment. For example, the mixing timing is during the polymerization reaction or at the end of the polymerization reaction, and further kneading the polycarbonate or the like. It can be added while the polycarbonate in the middle is melted. It is also possible to knead with an extruder or the like after blending with a solid polycarbonate such as pellets or powder.

  The polycarbonate resin composition of the present invention can be produced by mixing the above components simultaneously or in any order with a mixer such as a tumbler, V-type blender, nauter mixer, Banbury mixer, kneading roll, or extruder. . Furthermore, a nucleating agent, a flame retardant, an inorganic filler, an impact modifier, a foaming agent, a dye / pigment and the like that are usually used in the resin composition may be contained within a range not impairing the object of the present invention.

Hereinafter, the present invention will be described in more detail by way of examples. However, the present invention is not limited to the following examples.
In the following, the physical properties and characteristics of the polycarbonate resin and the polycarbonate resin composition were evaluated by the following methods.

(1) Reduced viscosity Using an Ubbelohde viscometer (DT-504 automatic viscometer manufactured by Chuo Rika), a 1: 1 mixed solvent of phenol and 1,1,2,2-tetrachloroethane is used as a solvent, and the temperature is 30. Measured at 0 ° C. ± 0.1 ° C. The concentration was precisely adjusted to be 1.00 g / dl.
The sample was dissolved in 30 minutes while stirring at 120 ° C., and used for measurement after cooling.
The relative viscosity η _rel was determined from the following equation from the solvent passage time t ₀ and the solution passage time t.
η _rel = t / t ₀ (g · cm ⁻¹ · sec ⁻¹ )
From the relative viscosity η _rel , the specific viscosity η _sp was determined from the following formula.
η _sp = (η−η ₀ ) / η ₀ = η _rel −1
The reduced viscosity (converted viscosity) η _red was determined by dividing the specific viscosity η _sp by the concentration c (g / dl).
η _red = η _sp / c
The higher the value of η _red, the higher the molecular weight.

(2) Hue measurement Using a colorimetric color difference meter (ZE-2000, manufactured by Nippon Denshoku Industries Co., Ltd.), the tristimulus value of the color was measured by the C light source transmission method, and yellow as the yellow discoloration index An index (YI) value was calculated.
Yellow index YI = 100 × (1.28X−1.06Z) / Y

(3) Hydrolysis resistance About the pellet kneaded with the twin-screw extruder, it was left still for 24 hours at 110 degreeC (1.5 * 10 < ⁵ > Pa) pressure cooker test. After the test, the sample was dried at 100 ° C. and 1.3 × 10 ³ Pa for 5 hours to remove moisture, then measured for each reduced viscosity of the sample before and after the test, and the reduced viscosity retention was calculated according to the following formula. .
Reduced viscosity retention rate (%) = (reduced viscosity after test / reduced viscosity before test) × 100

(4) Injection molding evaluation (normal molding ΔYI, defective appearance rate, mold release defect, mold deposit)
The pellets kneaded by the twin-screw extruder were subjected to 100 shot molding at 240 ° C. using an injection molding machine (MINIMAT 8 / 7A manufactured by Sumitomo Heavy Industries, Ltd.) to obtain a plate molded product of 30 mm × 30 mm × 2 mmt. Then, the above YI (referred to as “additive kneaded product YI”) was measured for the hue.
The normal molding ΔYI is measured on a flat molded product molded without blending an acidic compound or the like with four types of polycarbonate resins (PC resin A, PC resin B, PC resin C, PC resin D) prepared in advance, as will be described later. YI (referred to as “YI without additive”) was calculated according to the following formula.
Normal molding ΔYI≡ additive kneaded product YI-additive-free product YI

  Here, the additive-free product YI of each of the three types of polycarbonate resin is based on the YI of Reference Example 13 for PC resin A, the YI of Reference Example 16 for PC resin B, and the YI of Comparative Example 10 for PC resin D. For PC resin C, YI measured in the same manner as in Reference Example 13 was used except that PC resin C-1 was used.

Appearance defect rate (%) was calculated by the following formula for the number of appearance defects such as silver streak and black streak with respect to the total number of moldings.
Appearance defect rate ≡ Number of appearance defects / Total number of molded products For release defects and mold deposits, pellets kneaded with a twin-screw extruder were pre-dried at 80 ° C. for 4 hours, and J75EII type injection molding made by Nippon Steel Works Machine with a cylinder temperature of 230 ° C., a molding cycle of 45 seconds, a mold temperature of 60 ° C., a 60 mm × 60 mm × 3 mmt flat plate is molded into each material 100 shots, whether or not there is a mold release failure during molding, and fixing after 100 shot molding The amount of deposits on the side mold was confirmed visually.

(5) Molding residence evaluation (molding residence ΔYI)
About pellets kneaded with a twin-screw extruder, 7-shot molding is performed in a conventional manner at a cylinder temperature of 240 ° C using an injection molding machine (MINIMAT 8 / 7A manufactured by Sumitomo Heavy Industries, Ltd.) (normal molded product) Then, after retaining the resin in the molding machine (240 ° C.) for 10 minutes, molding was carried out for 7 shots (residual molded product) to obtain a 30 mm × 30 mm × 2 mmt flat plate molded product, After measuring the above YI and calculating each average value before and after the residence, the molding residence ΔYI was calculated according to the following formula.
Molded retention ΔYI = Still molded product YI−Normal molded product YI

(6) Terminal group structure analysis Using an NMR spectrometer (AVANCE DRX400 manufactured by Bruker), ¹ H-NMR spectrum was measured using deuterated chloroform to which TMS was added as a measurement solvent.
The peak detected at a chemical shift of 7.3 ppm to 7.5 ppm based on the TMS standard is attributed to the terminal group represented by the structural formula (2) described above (referred to as “phenyl group terminal”). After calculating the number of terminals per 100 units of the polymer repeat from the respective area ratios of the peaks assigned to all other terminals, the phenyl group terminal ratio was calculated according to the following formula.
Phenyl group terminal ratio (%) = [number of terminal group formula (1) / total number of terminals] × 100

(7) Extruded film evaluation Pellets obtained by kneading a polycarbonate resin sample that had been vacuum-dried at 80 ° C for 5 hours with a twin screw extruder were extruded at 240 ° C with a single screw extruder equipped with a T-die at the tip. After that, the sheet was rapidly cooled with a casting roll at 95 ° C. to obtain a stretching sheet having a thickness of about 100 μm, and evaluation was performed according to the following procedure.

-Bright spot foreign matter Two polarizing plates are arranged in an orthogonal state (crossed Nicols) to block transmitted light, and a film sample prepared is placed between the two polarizing plates. The polarizing plate used was a glass protective plate. Light was irradiated from one side, and the number of bright spots with a diameter of 0.01 mm or more per 1 cm ² was counted with an optical microscope (50 times) from the opposite side.
A: Number of bright spots from 0 to 30 ○: 31 to 50 Δ: 51 to 80 ×: 81 to 100 ××: 101 or more

・ Roll dirtiness (sheet formability)
When a sheet having a thickness of about 100 μm was formed using a single screw extruder and a sheet die, the degree of adhesion of volatile components to the mirror surface of the roll was visually observed and evaluated according to the following criteria.
◎: Low adhesion of volatile components ○: Normal adhesion of volatile components △: High adhesion of volatile components ×: Very high adhesion of volatile components

(8) Residual phenol amount After the resin pellet was dissolved in chloroform, reprecipitation treatment was further performed by adding methanol. After centrifuging the supernatant, it was filtered and phenol was quantified by HPLC, and the residual amount was calculated.
(HPLC quantification conditions)
・ Device: Agilent Technologies Inc. Agilent 1100
Analytical column: Kanto Chemical Co., Ltd. Mightysil RP-18
・ Eluent: 0.2% acetic acid aqueous solution / methanol gradient ・ Detection wavelength: 280 nm
-Column bath temperature: 40 ° C

(9) Photoelastic coefficient A device in which a birefringence measuring device including a He-Ne laser, a polarizer, a compensation plate, an analyzer, and a photodetector and a vibration viscoelasticity measuring device (DVE-3 manufactured by Rheology) are combined is used. Measured. (For details, see Journal of Japanese Society of Rheology, Vol. 19, p93-97 (1991).)
In the same manner as in the evaluation of roll dirtiness, a sheet having a thickness of about 100 μm is formed using a single screw extruder and a sheet die, and a sample having a width of 5 mm and a length of 20 mm is cut out from the sheet, and the viscoelasticity measuring apparatus is used. After fixing, the storage elastic modulus E ′ was measured at a frequency of 96 Hz at a room temperature of 25 ° C. At the same time, the emitted laser light is passed through the polarizer, sample, compensator, and analyzer in this order, picked up by a photodetector (photodiode), and passed through a lock-in amplifier with respect to the amplitude and distortion of the waveform of angular frequency ω or 2ω. The phase difference was determined, and the strain optical coefficient O ′ was determined. At this time, the directions of the polarizer and the analyzer were orthogonal to each other, and each was adjusted so as to form an angle of π / 4 with respect to the extending direction of the sample.
The photoelastic coefficient C was obtained from the following equation using the storage elastic modulus E ′ and the strain optical coefficient O ′.
C = O '/ E'

(10) Residual carbonic acid diester content and content of dihydroxy compound having a bond structure of structural formula (1) (residual monomer content)
After resolving 1.0 g of resin pellets in 10 ml of chloroform, a reprecipitation process was performed in which 20 ml of methanol was further added. The filtrate was concentrated to dryness using nitrogen gas and then redissolved in 1 ml of acetonitrile. After determining the amount of diphenyl carbonate and the dihydroxy compound having the bond structure of the structural formula (1) by GC (gas chromatography), the residual amount was calculated.

(GC / FID quantitative conditions)
・ Apparatus: HP6890 manufactured by Agilent Technologies, Inc.
・ Analysis column: TC-1 manufactured by GL Sciences Inc.
Oven temperature: 100 ° C. × 1 min. → 10 ° C./min. → 240 ° C. → 15 ° C./min. → 320 ° C. × 5 min.
-Detector: Hydrogen flame ionization detector-Detector temperature: 325 ° C
Carrier gas: He 1 ml / min.
・ Sample injection volume: 1 μl
In addition, about 10 ppm or less, since quantitative accuracy fell, it described as 10 ppm.

<Distillation of isosorbide>
Here, the distillation method of isosorbide used for the production of the heterocyclic ring-containing polycarbonate resins A and B is as follows.
After isosorbide was added to the distillation vessel, the pressure was gradually reduced and then warmed to dissolve at an internal temperature of about 100 ° C. Thereafter, distillation started at an internal temperature of 160 ° C. The pressure at this time was 133 Pa to 266 Pa. After the initial distillation, distillation was performed at an internal temperature of 160 ° C to 170 ° C, a tower top temperature of 150 ° C to 157 ° C, and 133 Pa. After completion of distillation, argon was added to return to normal pressure. The obtained distilled product was cooled and pulverized under an argon stream to obtain distilled and purified isosorbide. This product was sealed and stored at room temperature with AGELESS (Mitsubishi Gas Chemical Co., Ltd.) enclosed in an aluminum laminate bag under a nitrogen stream.

(Example 1 to Example 7)
(Production of heterocycle-containing polycarbonate resin A-1)
Tricyclodecane dimethanol (hereinafter abbreviated as "TCDDM") 31,260 parts by weight, diphenyl carbonate 117,957 parts by weight, and cesium carbonate 2.2 as a catalyst with respect to 54,220 parts by weight of distilled isosorbide. X10 ^-1 part by weight is put into a reaction vessel, and the heating bath temperature is heated to 150 ° C as a first step of the reaction in a nitrogen atmosphere, and the raw materials are dissolved while stirring as necessary. (Approximately 15 minutes).
Next, the pressure was reduced from normal pressure to 13.3 kPa over 40 minutes, and the generated phenol was extracted out of the reaction vessel while raising the heating bath temperature to 190 ° C. over 40 minutes.

After maintaining the entire reaction vessel at 190 ° C. for 15 minutes, as a second step, the heating bath temperature was increased to 240 ° C. over 30 minutes. Ten minutes after entering the temperature rise, the pressure in the reaction vessel was reduced to 0.200 kPa or less in 30 minutes, and the generated phenol was distilled off. After reaching a predetermined stirring torque, the reaction was stopped, and molten polycarbonate resin was continuously supplied from the outlet of the polymerization machine to a twin-screw extruder equipped with 3 vents and water injection equipment.
In the twin screw extruder, each additive is continuously added so as to have the composition shown in Table 1, and low molecular weight substances such as phenol are poured and degassed at each vent, and then pelletized by a pelletizer. To obtain a heterocycle-containing polycarbonate resin A-1 having isosorbide / TCDDM = 70/30 (mol% ratio) (referred to as “PC resin A-1”).
FIG. 1 shows a ¹ H-NMR chart of the heterocyclic ring-containing polycarbonate resin A-1.

(Production of heterocycle-containing polycarbonate resin B-1)
With respect to 73,070 parts by weight of isosorbide, 109,140 parts by weight of diphenyl carbonate and 2.0 × 10 ⁻¹ parts by weight of cesium carbonate as a catalyst were put into a reaction vessel, and the first reaction was conducted in a nitrogen atmosphere. As a step, the heating bath temperature was heated to 150 ° C., and the raw materials were dissolved while stirring as necessary (about 15 minutes).
Next, the pressure was reduced from normal pressure to 13.3 kPa over 40 minutes, and the generated phenol was extracted out of the reaction vessel while raising the heating bath temperature to 190 ° C. over 40 minutes.

After maintaining the entire reaction vessel at 190 ° C. for 15 minutes, as a second step, the heating bath temperature was increased to 240 ° C. over 30 minutes. Ten minutes after entering the temperature rise, the pressure in the reaction vessel was reduced to 0.200 kPa or less in 30 minutes, and the generated phenol was distilled off. After reaching a predetermined stirring torque, the reaction was stopped, and molten polycarbonate resin was continuously supplied from the outlet of the polymerization machine to a twin-screw extruder equipped with 3 vents and water injection equipment.
In the twin screw extruder, each additive is continuously added so as to have the composition shown in Table 1, and low molecular weight substances such as phenol are poured and degassed at each vent, and then a heterocyclic ring is formed by a pelletizer. A pellet of polycarbonate resin B-1 was obtained (referred to as “PC resin B-1”).

(Production of heterocycle-containing polycarbonate resin C-1)
25,218 parts by weight of 1,4-cyclohexanedimethanol (hereinafter abbreviated as “CHDM”), 124,867 parts by weight of diphenyl carbonate (DPC), and 59,630 parts by weight of distilled isosorbide (ISB); As a catalyst, 2.4 × 10 ⁻¹ parts by weight of cesium carbonate is put into a reaction vessel, and in a nitrogen atmosphere, the heating bath temperature is heated to 150 ° C. as the first step of the reaction. The material was dissolved with stirring (about 15 minutes).
Next, the pressure was reduced from normal pressure to 13.3 kPa over 40 minutes, and the generated phenol was extracted out of the reaction vessel while raising the heating bath temperature to 190 ° C. over 40 minutes.

After maintaining the entire reaction vessel at 190 ° C. for 15 minutes, as a second step, the heating bath temperature was increased to 240 ° C. over 30 minutes. Ten minutes after entering the temperature rise, the pressure in the reaction vessel was reduced to 0.200 kPa or less in 30 minutes, and the generated phenol was distilled off. After reaching a predetermined stirring torque, the reaction was stopped, and molten polycarbonate resin was continuously supplied from the outlet of the polymerization machine to a twin-screw extruder equipped with 3 vents and water injection equipment.
In the twin screw extruder, each additive is added continuously so as to have the composition shown in Table 1, and low molecular weight substances such as phenol are poured and devolatilized in each vent, and then pelletized by a pelletizer. To obtain a heterocycle-containing polycarbonate resin C-1 having isosorbide (ISB) / CHDM = 70/30 (mol% ratio) (referred to as “PC resin C-1”).

(Comparative Examples 1 to 6)
For Comparative Examples 1 and 2, in the production of the heterocyclic ring-containing polycarbonate resin A-1, except that 115,688 parts by weight of diphenyl carbonate was used, the proportion of the terminal phenyl group was 20%. Less than polycarbonate resin A-2 (referred to as “PC resin A-2”) was used.
For Comparative Examples 3 and 4, in the production of the heterocyclic ring-containing polycarbonate resin B-1, except that 107,103 parts by weight of diphenyl carbonate was used, the ratio of phenyl group ends was 20%. Less than polycarbonate resin B-2 (referred to as “PC resin B-2”) was used.
For Comparative Examples 5 and 6, the production of the heterocyclic ring-containing polycarbonate resin C-1 was carried out in the same manner as in Example except that the amount of diphenyl carbonate was 122,994 parts by weight. Less than polycarbonate resin C-2 (referred to as “PC resin C-2”) was used.
The results are shown in Table 1. The monomers, antioxidants, and acidic compounds shown in Table 1 are as follows.

(monomer)
ISB: Isosorbide TCDDM: Tricyclodecane dimethanol BPA: Bisphenol A
CHDM: 1,4-cyclohexanedimethanol

(Antioxidant)
Irganox 259: 1,6-hexanediol-bis {3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate} (Ciba Specialty Chemicals)
Irganox 1010: Pentaerythrityl-tetrakis {3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate (Ciba Specialty Chemicals)
ADK STAB PEP-4C: Bis (nonylphenyl) pentaerythritol diphosphite (manufactured by Adeka Corporation)
ADK STAB PEP-8: Distearyl-pentaerythritol diphosphite (manufactured by Adeka Corporation)
ADK STAB PEP-36: Bis (2,6-t-butyl-4-methylphenyl) pentaerythrityl diphosphite) (manufactured by Adeka Corporation)
Irgaphos 168: Tris (2,4-di-tertbutylphenyl) phosphite (manufactured by Adeka Corporation)

(Acidic compounds)
p-Toluenesulfonate butyl: manufactured by Tokyo Chemical Industry Co., Ltd.

  From the results shown in Table 1, PC resin A having a structural unit derived from isosorbide and tricyclodecane dimethanol (dihydroxy compound having structural formula (1)) and having a phenyl group terminal ratio in the range of 20% or more. -1, PC resin B-1 and PC resin C-1 (Examples 1 to 7) show a small value for normal molding ΔYI and molding residence ΔYI in the evaluation of injection molding, and transparency with little appearance coloration It can be seen that this is an excellent material.

  On the other hand, PC resin A-2, PC resin B-2, and PC resin C-2 in which the ratio of phenyl group terminals is less than 20% (Comparative Example 1 to Comparative Example 6) are molding retention ΔYI in injection molding evaluation. Shows a large value, and it can be seen that the material has a lot of coloring on the appearance and the transparency is impaired.

(Examples 8 to 12, Reference Example 13, Example 14, Reference Examples 15 to 16)
Using the compound shown in Table 2, using the heterocyclic ring-containing polycarbonate resin A-1 (PC resin A-1), the heterocyclic ring-containing polycarbonate resin B-1 (PC resin B-1), the antioxidant and the acidic compound described above. Various evaluation was performed about the prepared polycarbonate resin composition. The results are shown in Table 2. Note that the photoelastic coefficient of the sample used in Example 8 is 9 × 10 ⁻¹² Pa ⁻¹ .

From the results shown in Table 2, PC resin A-1 and PC resin B-1 having structural units derived from isosorbide and tricyclodecane dimethanol and having a phenyl group terminal ratio (%) of 20% or more are usually used. Not only is the molding ΔYI and the molding residence ΔYI small, but particularly when the residual phenol content is 700 ppm or less, the appearance defect rate (%) in the injection molding evaluation is low, and the molding residence ΔYI is small. It can be seen that the material is excellent in transparency.
Moreover, it turns out that shaping | molding residence (DELTA) YI falls significantly by mix | blending antioxidant (Examples 8-12, 14) compared with the case where an antioxidant is not mix | blended (reference examples 13 and 16).

(Reference Examples 17 and 18)
In Reference Examples 17 and 18, the heterocyclic ring-containing polycarbonate resin was obtained by the same operation as in Example 1 except that only vacuum devolatilization was performed without water injection with a twin screw extruder. A-3 (referred to as “PC resin A-3”) was used.
Various evaluation was performed about the polycarbonate resin composition prepared by the mixing | blending shown in Table 3 using the heterocyclic resin polycarbonate resin A-3 (PC resin A-3), the antioxidant mentioned above, and the acidic compound. The results are shown in Table 3.

(Comparative Examples 7 to 11)
In Comparative Example 7, 115,688 parts by weight of diphenyl carbonate is used in the production of the heterocyclic ring-containing polycarbonate resin A-1, and only vacuum devolatilization is performed without pouring water with a twin screw extruder. Other than that, the heterocyclic ring-containing polycarbonate resin A-4 (referred to as “PC resin A-4”) obtained in the same manner was used.

(Production of polycarbonate resin D-1 containing no heterocyclic ring)
In Comparative Examples 8 and 10, polycarbonate resin D-1 containing no heterocyclic ring produced as follows was used.
With respect to 91,200 parts by weight of bisphenol A, 89,024 parts by weight of diphenyl carbonate and 4.0 × 10 ⁻² parts by weight of cesium carbonate as a catalyst were put into a reaction vessel, and the first reaction was conducted in a nitrogen atmosphere. As a step, the heating bath temperature was heated to 150 ° C., and the raw materials were dissolved while stirring as necessary (about 15 minutes).
Next, the pressure was reduced from normal pressure to 13.3 kPa over 40 minutes, and the generated phenol was extracted out of the reaction vessel while raising the heating bath temperature to 190 ° C. over 40 minutes.

After holding the entire reaction vessel at 190 ° C. for 15 minutes, as a second step, the heating bath temperature was raised to 250 ° C. in 30 minutes. Ten minutes after entering the temperature rise, the pressure in the reaction vessel was reduced to 0.200 kPa or less in 30 minutes, and the generated phenol was distilled off. After reaching a predetermined stirring torque, the reaction was stopped, and molten polycarbonate resin was continuously supplied from the outlet of the polymerization machine to a twin-screw extruder equipped with 3 vents and water injection equipment.
Each additive is continuously added so as to have the composition shown in Table 3 with a twin-screw extruder, and low molecular weight substances such as phenol are injected and devolatilized at each vent, and then a heterocyclic ring is formed by a pelletizer. The pellet of the polycarbonate resin D-1 which does not contain was obtained (it describes as "PC resin D-1").

In Comparative Examples 9 and 11, the polycarbonate resin D-2 was obtained by the same operation as in Comparative Example 8 except that only vacuum devolatilization was performed without water injection with a twin screw extruder. (Referred to as “PC resin D-2”).
Moreover, Comparative Examples 7-11 was changed so that it might become a composition shown in Table 3, and polycarbonate resin was obtained by the same operation except it.
In the same manner as in the examples, various evaluations were performed on polycarbonate resin compositions prepared by mixing shown in Table 3 using an antioxidant and an acidic compound. The results are shown in Table 3. In addition, the photoelastic coefficient of the sample used in Comparative Example 11 is 80 × 10 ⁻¹² Pa ⁻¹ .

From the results shown in Table 3, the molding residence ΔYI is obtained when the proportion (%) of the phenyl group is less than 20% (Comparative Example 7) even though the structural unit has a chemical structure unique to the polycarbonate resin of the present invention. Shows a large value, and it can be seen that the material loses transparency during molding.
Further, in the comparison between Examples, the polycarbonate resin A (Reference Examples 17 and 18) having a residual phenol content exceeding 700 ppm has a relatively high appearance defect rate (%) in the injection molding evaluation, and molding. The retention ΔYI also shows a relatively large value, and it can be seen that this is a material whose transparency is impaired during molding.
On the other hand, in the case of polycarbonate resin D having a structural unit derived from bisphenol A (Comparative Example 8 to Comparative Example 11), the amount of residual phenol is set to 700 ppm or less under the conditions where no antioxidant is used (Comparative Examples 8 and 9). Even if this is done, the molding retention ΔYI is not improved but rather deteriorated, and the improvement in the appearance defect rate is small. And the amount of roll adhesion is not greatly improved. Furthermore, even under the conditions using the antioxidant (Comparative Examples 10 and 11), the degree of improvement of the normal molding ΔY, the molding residence ΔYI, and the appearance defect rate is small, and the amount of roll adhesion is not greatly improved.
On the other hand, the polycarbonate resin of the present invention is greatly affected by residual phenol, and by reducing the residual phenol amount to 700 ppm or less, normal molding ΔY, molding retention ΔYI, appearance defect rate, and roll adhesion amount are improved. It can be seen that, particularly, the appearance defect rate and roll adhesion amount are dramatically improved.

(Examples 19 to 25, Reference Example 26, Example 27, Reference Example 28, Example 29)
(Production of heterocycle-containing polycarbonate resin A-5)
With respect to 54,220 parts by weight of distilled isosorbide, TCDDM 31,260 parts by weight, diphenyl carbonate 117,957 parts by weight, and as a catalyst, cesium carbonate 2.2 × 10 ⁻¹ part by weight was charged into the reaction vessel, and a nitrogen atmosphere Below, as a first step of the reaction, the heating bath temperature was heated to 150 ° C., and the raw materials were dissolved while stirring as necessary (about 15 minutes). Subsequently, the pressure was reduced from normal pressure to 13.3 kPa over 40 minutes, and the generated phenol was extracted out of the reaction vessel while raising the heating bath temperature to 190 ° C. over 40 minutes.

  Subsequently, after the whole reaction vessel was held at 190 ° C. for 15 minutes, the heating bath temperature was raised to 240 ° C. in 30 minutes as the second step. Ten minutes after entering the temperature rise, the pressure in the reaction vessel was reduced to 0.200 kPa or less in 30 minutes, and the generated phenol was distilled off. After reaching the predetermined stirring torque, the molten resin is discharged from the discharge port at the bottom of the container, and further polymerized with the setting of staying at 240 ° C for 1 hour while continuously supplying to the spectacle blade polymerization machine (manufactured by Hitachi, Ltd.) And the generated phenol was extracted out of the container. Subsequently, the polycarbonate molten resin discharged from the outlet of the spectacle blade polymerizer was continuously supplied to a twin-screw extruder provided with 3 vents and water injection equipment. In the twin screw extruder, each additive is continuously added so as to have the composition shown in Table 1, and low molecular weight substances such as phenol are poured and degassed at each vent, and then pelletized by a pelletizer. To obtain a copolymer polycarbonate resin A-5 having isosorbide / TCDDM = 70/30 (mol% ratio) (referred to as “PC resin A-5”).

(Heterocycle-containing polycarbonate resin B-3)
With respect to 73,070 parts by weight of isosorbide, 109,140 parts by weight of diphenyl carbonate and 2.0 × 10 ⁻¹ parts by weight of cesium carbonate as a catalyst were put into a reaction vessel, and the first reaction was conducted in a nitrogen atmosphere. As a step, the heating bath temperature was heated to 150 ° C., and the raw materials were dissolved while stirring as necessary (about 15 minutes).
Subsequently, the pressure was reduced from normal pressure to 13.3 kPa over 40 minutes, and the generated phenol was extracted out of the reaction vessel while raising the heating bath temperature to 190 ° C. over 40 minutes.

After maintaining the entire reaction vessel at 190 ° C. for 15 minutes, as a second step, the heating bath temperature was increased to 240 ° C. in 30 minutes. Ten minutes after entering the temperature rise, the pressure in the reaction vessel was reduced to 0.200 kPa or less in 30 minutes, and the generated phenol was distilled off. After reaching the predetermined stirring torque, the molten resin is discharged from the discharge port at the bottom of the container, and further polymerized with the setting of staying at 240 ° C for 1 hour while continuously supplying to the spectacle blade polymerization machine (manufactured by Hitachi, Ltd.) And the generated phenol was extracted out of the container.
Next, the molten polycarbonate resin discharged from the outlet of the spectacle blade polymerizer was continuously supplied to a twin screw extruder equipped with 3 vents and water injection equipment. In the twin screw extruder, each additive is continuously added so as to have the composition shown in Table 4, and low molecular weight substances such as phenol are poured and devolatilized in each vent, and then pelletized by a pelletizer. To obtain a copolymer polycarbonate resin B-3 having isosorbide / TCDDM = 70/30 (mol% ratio) (referred to as “PC resin B-3”).
As for Example 29, in addition to using 115,688 parts by weight (decrease in DPC) of diphenyl carbonate in the production of the heterocyclic ring-containing polycarbonate resin A-1, water can be poured with a twin screw extruder. PC resin A-4 obtained by the same operation was used except changing to performing only vacuum devolatilization.

  PC resin A-1, PC resin A-4, PC resin A-5, PC resin B-1, PC resin B-3, the above-mentioned antioxidants and acidic compounds were used and prepared according to the formulation shown in Table 4. Various evaluation was performed about the polycarbonate resin composition. The results are shown in Table 4.

From the results shown in Table 4, when having a constitutional unit derived from isosorbide and tricyclodecane dimethanol and having a phenyl group terminal ratio (%) of 20% or more, the molding ΔYI and the molding residence ΔYI are usually small. PC resin A-1, PC resin A-4, PC resin A-5, PC resin B-1, and PC resin B-3 whose content of residual carbonic acid diester is 0.1 ppm to 60 ppm or less, In addition to the low rate of defective appearance (%) in the injection molding evaluation, the molding retention ΔYI shows a small value, indicating that the material is excellent in transparency.
Further, it can be seen that by adding the antioxidant (Examples 19 to 25, 27, 29), the molding residence ΔYI is significantly reduced as compared with the case where the antioxidant is not added (Reference Examples 26, 28). .

(Reference Example 30, Example 31 to Example 32, Reference Example 33)
In Reference Example 30 and Example 31, PC resin A-3 was used in which only the vacuum devolatilization was performed without pouring water with a twin screw extruder during the production of the heterocyclic ring-containing polycarbonate resin A-1.
In Example 32, in the production of the heterocyclic ring-containing polycarbonate resin A-1, a diphenyl carbonate amount of 120,225 parts by weight was used, and further, only the vacuum devolatilization was performed without pouring water with a twin screw extruder. Ring-containing polycarbonate resin A-6 (referred to as “PC resin A-6”) was used.
In Reference Example 33, in the production of the heterocyclic ring-containing polycarbonate resin B-1, the polycarbonate resin B-4 ("PC resin B-4") which was vacuum devolatilized without water injection with a twin-screw extruder was described. .) Was used.
Various evaluation was performed about the polycarbonate resin composition prepared by the mixing | blending shown in Table 5 using PC resin A-3, PC resin A-6, PC resin B-4, the antioxidant mentioned above, and an acidic compound. The results are shown in Table 5.

(Comparative Examples 12 to 16)
For Comparative Examples 12, 15, and 16, polycarbonate resin D-1 was used.
In Comparative Examples 13 and 14, polycarbonate resin D-2 ("PC resin D-2") in which only vacuum devolatilization was performed without pouring water with a twin screw extruder during the production of polycarbonate resin D-1. ) Was used. Various evaluation was performed about the polycarbonate resin composition prepared by the mixing | blending shown in Table 5 using PC resin D-1, PC resin D-2, the antioxidant mentioned above, and an acidic compound. The results are shown in Table 5.

From the results shown in Table 5, even when the phenyl group terminal ratio is 20% or more, a composition comprising a polycarbonate resin containing no structural unit derived from a dihydroxy compound having a bond structure of the structural formula (1) (Comparative Example 12 -16) has a large photoelastic coefficient and is inferior.
Moreover, even if it has a structural unit derived from isosorbide and tricyclodecane dimethanol, the polycarbonate resin A in which the content of residual carbonic acid diester exceeds 60 ppm (Reference Example 30, Examples 31 to 32, Reference Example 33). ), When the examples are compared, it can be seen that in addition to the high appearance defective product rate (%) in the evaluation of injection molding, the molding retention ΔYI shows a large value, indicating that the material is inferior in transparency.
Moreover, PC resin D-1 and PC resin D-2 which have the structural unit derived from bisphenol A (Comparative Examples 12-16) show that the balance between the appearance defect product rate (%) and the molding residence ΔYI is poor. .

(Example 34 to Example 39)
Heterocycle-containing polycarbonate resin A-1 (PC resin A-1), heterocycle-containing polycarbonate resin A-5 (PC resin A-5), heterocycle-containing polycarbonate resin B-1 (PC resin B-1), heterocycle Various evaluation was performed about the polycarbonate resin composition prepared by the mixing | blending shown in Table 6 using the containing polycarbonate resin B-3 (PC resin B-3), the antioxidant mentioned above, and an acidic compound. The results are shown in Table 6.

(Comparative Example 17 to Comparative Example 20)
For Comparative Example 17 and Comparative Example 18, PC resin A-4 was used, and for Comparative Example 19 and Comparative Example 20, the amount of diphenyl carbonate 104,860 parts by weight was used in the production of the heterocyclic ring-containing polycarbonate resin B-1. In addition, the content of isosorbide obtained by performing the same operations as in the production of the heterocyclic ring-containing polycarbonate resin B-1, except that only the vacuum devolatilization was performed without pouring water with a twin-screw extruder. Used was polycarbonate resin B-5 (referred to as "PC resin B-5") exceeding 60 ppm.
Heterocycle-containing polycarbonate resin A-1 (PC resin A-1), A-4, A-5, polycarbonate resin B-1 (PC resin B-1), B-3, B-5, oxidation described above Various evaluation was performed about the polycarbonate resin composition prepared by the mixing | blending shown in Table 6 using an inhibitor and an acidic compound. The results are shown in Table 6.

  From the results shown in Table 6, it has structural units derived from isosorbide and tricyclodecane dimethanol (dihydroxy compound having the structural formula (1)), the phenyl group terminal ratio is 20% or more, and the content of isosorbide ( PC Resin A-1, PC Resin A-5, PC Resin B-1 and PC Resin B-3 (residual monomer amount) of 60 ppm or less (Example 34 to Example 39) are poor appearance products in injection molding evaluation. In addition to the low rate (%), the molding retention ΔYI shows a small value, and it can be seen that the material is less colored and has excellent transparency. Also, in the evaluation of extruded film, the amount of deposits on the roll and the number of defects can be reduced and stable film production is possible.

  On the other hand, PC resin A-4 and PC resin B-5 (Comparative Example 17 to Comparative Example 20) in which the content of isosorbide or tricyclodecane dimethanol (residual monomer amount) exceeds 60 ppm are poor in appearance in the evaluation of injection molding. In addition to a high non-defective rate (%), the molding retention ΔYI shows a large value, and it can be seen that the material has a lot of coloration on the appearance and the transparency is impaired. Further, in the evaluation of the extruded film, both the amount of deposits on the roll and the number of defects tend to be somewhat large, and the stability in film production is somewhat lacking.

(Examples 40 to 43, Reference Example 44, Example 45, Reference Example 46)
When producing the heterocyclic ring-containing polycarbonate resin A-1 (PC resin A-1), the PC resin A-2, the PC resin A-3, and the heterocyclic ring-containing polycarbonate resin A-1 (PC resin A-1) described above. Heterocycle-containing polycarbonate resin A-7 (referred to as “PC resin A-7”) obtained in the same manner as in the production of PC resin A-1, except that the heating tank temperature in the second stage was 280 ° C. Various evaluation was performed about the polycarbonate resin composition prepared by the mixing | blending shown in Table 7 using the antioxidant mentioned below and the following mold release agent. The results are shown in Table 7.

(Release agent)
NAA-180: Stearic acid (manufactured by NOF Corporation)
Golden Brand Powder: Sarah Beeswax (Miki Chemical Industry Co., Ltd.)
Paraffin wax 155: Paraffin wax (Nippon Seiki Co., Ltd.)

From the results shown in Table 7, a polycarbonate resin composition using a polycarbonate resin having a phenyl group terminal ratio in the range of 20% or more (Examples 40 to 43, Reference Example 44, Example 45, Reference Example 46). Is excellent in at least one of injection molding evaluation and ΔYI.
Furthermore, the terminal group (double bond terminal) represented by the structural formula (2) described above is obtained by polycondensation of isosorbide (ISB), tricyclodecane dimethanol (TCDDM) and diphenyl carbonate (DPC). When it is% or less, ΔYI is small, and when the residual monomer content is 60 ppm or less, it can be seen that ΔYI is smaller and the material is less colored. In particular, when the residual carbonic acid diester is contained in an amount of 60 ppm or less, it can be seen that, in addition to the above-mentioned advantages, there are few mold deposits and an excellent material despite the fact that it contains a release agent.

<Polycarbonate resin composition containing inorganic filler>
<Preparation of polycarbonate resin>
(Heterocycle-containing polycarbonate resin A-8)
As the catalyst, 31,260 parts by weight of tricyclodecane dimethanol (hereinafter abbreviated as “TCDDM”), 117,957 parts by weight of diphenyl carbonate (DPC), and 54,220 parts by weight of distilled isosorbide (ISB) Then, 2.2 × 10 ⁻¹ parts by weight of cesium carbonate was put into a reaction vessel, and the heating bath temperature was heated to 150 ° C. under the nitrogen atmosphere as the first step of the reaction, and stirred as necessary. While starting, the raw materials were dissolved (about 15 minutes).
Next, the pressure was reduced from normal pressure to 13.3 kPa over 40 minutes, and the generated phenol was extracted out of the reaction vessel while raising the heating bath temperature to 190 ° C. over 40 minutes.

After maintaining the entire reaction vessel at 190 ° C. for 15 minutes, as a second step, the heating bath temperature was increased to 240 ° C. over 30 minutes. Ten minutes after entering the temperature rise, the pressure in the reaction vessel was reduced to 0.200 kPa or less in 30 minutes, and the generated phenol was distilled off. After reaching a predetermined stirring torque, the reaction was stopped, and molten polycarbonate resin was continuously supplied from the outlet of the polymerization machine to a twin-screw extruder equipped with 3 vents and water injection equipment.
Each additive is continuously added to the composition shown in Table 8 with a twin-screw extruder, and low molecular weight substances such as phenol are poured and devolatilized at each vent, and then pelletized with a pelletizer. To obtain a heterocycle-containing polycarbonate resin A-8 of isosorbide (ISB) / TCDDM = 70/30 (mol% ratio) (referred to as “PC resin A-8”).

<Evaluation of physical properties of polycarbonate resin composition>
(injection molding)
Polycarbonate resin pellets kneaded and prepared by a twin screw extruder were pre-dried at 80 ° C. for 4 hours, and then the pellets and various additives were put into an injection molding machine (Japan Steel Works J75EII type). Various test pieces were prepared by injection molding under the conditions of ℃, a molding cycle of 45 seconds, and a mold temperature of 60 ℃.

(Flexural modulus)
A test piece prepared using an injection molding machine was subjected to a three-point bending test according to a bending test method based on ISO 178.

(Mold deposit)
For each polycarbonate resin composition, a flat plate having a length of 60 mm, a width of 60 mm, and a thickness of 3 mm was molded for 100 shots under the above-described injection molding conditions. The amount of deposits on the mold was observed visually.

(Molding retention ΔYI)
For each polycarbonate resin composition, the molding cycle was changed to 300 seconds under the above-described injection molding conditions, and a flat plate having a length of 60 mm, a width of 60 mm, and a thickness of 3 mm was molded for 10 shots each under the same conditions. Pieces were prepared.
Next, for each prepared test piece, the yellow index (YI) value was measured by a C light source reflection method with a spectral color difference meter (SE-2000 manufactured by Nippon Denshoku Industries Co., Ltd.) (300-second cycle molded product YI). .
From this 300-second cycle molded product YI and the yellow index (YI) value (45-second cycle molded product YI) of a test piece injection molded at a molding cycle of 45 seconds, a molding residence ΔYI was calculated according to the following formula.
Molding retention ΔYI = (300-second cycle molded product YI) − (45-second cycle molded product YI)

(Examples 47 to 48, Reference Example 49)
In Reference Example 49, in the production of PC resin A-8 described above, a heterocyclic ring obtained by performing the same operation except that only vacuum devolatilization was performed without pouring water with a twin screw extruder. Containing polycarbonate resin A-9 (referred to as “PC resin A-9”) was used.
Various types of polycarbonate resin compositions prepared by blending shown in Table 8 using the heterocyclic ring-containing polycarbonate resin A-8 (PC resin A-8), PC resin A-9, the following antioxidant, and the following inorganic filler are used. Evaluation was performed. The results are shown in Table 8.

(Comparative Examples 21 and 22)
In Comparative Example 22, a heterocyclic ring-containing polycarbonate resin A-10 ("PC resin" obtained by performing the same operation except that the amount of diphenyl carbonate was changed to 115,688 parts by weight in the production of PC resin A-8. A-10 ") was used.
Various evaluation was performed about the polycarbonate resin composition prepared by the mixing | blending shown in Table 8 using the heterocyclic resin polycarbonate resin A-8 (PC resin A-8) mentioned above, the following antioxidant, and the following inorganic filler. . The results are shown in Table 8.

(Antioxidant)
(1) Irganox 1010: pentaerythrityl-tetrakis {3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate (manufactured by Ciba Specialty Chemicals)
(2) ADK STAB PEP-36: Bis (2,6-t-butyl-4-methylphenyl) pentaerythrityl diphosphite) (manufactured by Adeka Corporation)
(3) Irgaphos 168: Tris (2,4-di-tertbutylphenyl) phosphite (manufactured by Adeka Corporation)

(Inorganic filler)
(1) Glass fiber: Glass strand ECS03T-571 (manufactured by Nippon Electric Glass Co., Ltd.)
(2) Carbon fiber: Pyrofil chopped fiber TR06U (Mitsubishi Rayon Co., Ltd.)

  From the results shown in Table 8, the proportion of the terminal ends of the phenyl group obtained by polycondensation of isosorbide (ISB), tricyclodecane dimethanol (TCDDM) and diphenyl carbonate (DPC) and represented by the structural formula (2) described above. Is 20% or more, and the polycarbonate resin composition containing 1 to 100 parts by weight of the inorganic filler (Examples 47 to 48, Reference Example 49) has a high flexural modulus, and It can be seen that at least one of the molding retention ΔYI and the mold deposit is an excellent composition. In particular, when the Examples are compared with each other, it is found that when the residual carbonic acid diester is 60 ppm or less, the material is particularly excellent in that there are few mold deposits and the flexural modulus is high.

<Polycarbonate resin composition containing flame retardant>
<Preparation of polycarbonate resin>
(Heterocycle-containing polycarbonate resin A-11)
As the catalyst, 31,260 parts by weight of tricyclodecane dimethanol (hereinafter abbreviated as “TCDDM”), 117,957 parts by weight of diphenyl carbonate (DPC), and 54,220 parts by weight of distilled isosorbide (ISB) Then, 2.2 × 10 ⁻¹ parts by weight of cesium carbonate was put into a reaction vessel, and the heating bath temperature was heated to 150 ° C. under the nitrogen atmosphere as the first step of the reaction, and stirred as necessary. While starting, the raw materials were dissolved (about 15 minutes).
Next, the pressure was reduced from normal pressure to 13.3 kPa over 40 minutes, and the generated phenol was extracted out of the reaction vessel while raising the heating bath temperature to 190 ° C. over 40 minutes.

After maintaining the entire reaction vessel at 190 ° C. for 15 minutes, as a second step, the heating bath temperature was increased to 240 ° C. over 30 minutes. Ten minutes after entering the temperature rise, the pressure in the reaction vessel was reduced to 0.200 kPa or less in 30 minutes, and the generated phenol was distilled off. After reaching a predetermined stirring torque, the reaction was stopped, and molten polycarbonate resin was continuously supplied from the outlet of the polymerization machine to a twin-screw extruder equipped with 3 vents and water injection equipment.
In the twin screw extruder, each additive is continuously added so as to have the composition shown in Table 9, and low molecular weight substances such as phenol are poured and devolatilized in each vent, and then pelletized by a pelletizer. To obtain a heterocyclic resin-containing polycarbonate resin A-11 having isosorbide (ISB) / TCDDM = 70/30 (mol% ratio) (referred to as “PC resin A-11”).

<Evaluation of physical properties of polycarbonate resin composition>
(injection molding)
Polycarbonate resin pellets kneaded and prepared by a twin screw extruder were pre-dried at 80 ° C. for 4 hours, and then the pellets and various additives were put into an injection molding machine (Japan Steel Works J75EII type). Various test pieces were prepared by injection molding under the conditions of ℃, a molding cycle of 45 seconds, and a mold temperature of 60 ℃.

(Combustion quality)
About pellets kneaded with a twin screw extruder, pellets preliminarily dried at 80 ° C. for 4 hours are manufactured by Nippon Steel Works J75EII type injection molding machine under the conditions of a cylinder temperature of 230 ° C., a molding cycle of 45 seconds, and a mold temperature of 60 ° C. A 1.5 mmt combustion test piece was molded in accordance with UL94 standard. The obtained test piece was subjected to a UL94 standard vertical combustion test.

(Examples 50 to 51, Reference Example 52)
In Reference Example 52, in the production of PC resin A-11 described above, a heterocyclic ring obtained by performing the same operation except that only vacuum devolatilization was performed without pouring water with a twin screw extruder. Containing polycarbonate resin A-12 (referred to as “PC resin A-12”) was used.
Various evaluations are made on polycarbonate resin compositions prepared by blending shown in Table 9 using the heterocyclic ring-containing polycarbonate resin A-11 (PC resin A-11), PC resin A-12, the following antioxidant, and the following flame retardant. Went. The results are shown in Table 9.

(Comparative Examples 23 and 24)
In Comparative Example 24, in the production of PC resin A-11, a heterocycle-containing polycarbonate resin A-13 obtained by performing the same operation except that the temperature of the second-stage heating tank was changed to 280 ° C. ( "PC resin A-13"). ) Was used.
About the polycarbonate resin composition prepared by blending shown in Table 9 using the heterocyclic ring-containing polycarbonate resin A-11 (PC resin A-11), PC resin A-13, the following antioxidant, and the following flame retardant. Various evaluations were performed. The results are shown in Table 9.

(Antioxidant)
(1) Irganox 1010: pentaerythrityl-tetrakis {3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate (manufactured by Ciba Specialty Chemicals)
(2) ADK STAB PEP-36: Bis (2,6-t-butyl-4-methylphenyl) pentaerythrityl diphosphite) (manufactured by Adeka Corporation)
(3) Irgaphos 168: Tris (2,4-di-tertbutylphenyl) phosphite (manufactured by Adeka Corporation)

(Flame retardants)
(1) SPS-100: Phosphazene compound (manufactured by Otsuka Chemical Co., Ltd.)
(2) PX-200: Aromatic condensed phosphate (manufactured by Daihachi Chemical Industry Co., Ltd.)

  From the results shown in Table 9, the proportion of the terminal ends of the phenyl group obtained by polycondensation of isosorbide (ISB), tricyclodecane dimethanol (TCDDM) and diphenyl carbonate (DPC), and represented by the structural formula (2) described above. Is 20% or more, and the polycarbonate resin composition containing 0.01 to 30 parts by weight of the flame retardant (Examples 50 to 51, Reference Example 52) has a small molding residence ΔYI and is less colored. However, it turns out that it is a material excellent in flame retardancy. Furthermore, when Examples are compared with each other, it can be seen that polycarbonate resin compositions containing 60 ppm or less of residual carbonic acid diester (Examples 50 and 51) are more excellent materials without increasing mold deposits.

<Polycarbonate resin composition containing UV absorber>
<Preparation of polycarbonate resin>
(Production Example 1: Heterocycle-containing polycarbonate resin R-1)
As the catalyst, 31,260 parts by weight of tricyclodecane dimethanol (hereinafter abbreviated as “TCDDM”), 117,957 parts by weight of diphenyl carbonate (DPC), and 54,220 parts by weight of distilled isosorbide (ISB) Then, 2.2 × 10 ⁻¹ parts by weight of cesium carbonate was put into a reaction vessel, and the heating bath temperature was heated to 150 ° C. under the nitrogen atmosphere as the first step of the reaction, and stirred as necessary. While starting, the raw materials were dissolved (about 15 minutes).
Next, the pressure was reduced from normal pressure to 13.3 kPa over 40 minutes, and the generated phenol was extracted out of the reaction vessel while raising the heating bath temperature to 190 ° C. over 40 minutes.
After maintaining the entire reaction vessel at 190 ° C. for 15 minutes, as a second step, the heating bath temperature was increased to 240 ° C. over 30 minutes. Ten minutes after entering the temperature rise, the pressure in the reaction vessel was reduced to 0.200 kPa or less in 30 minutes, and the generated phenol was distilled off. After reaching a predetermined stirring torque, the reaction was stopped, and a molten polycarbonate resin R-1 was obtained from the outlet of the polymerization machine (hereinafter referred to as “PC resin R-1”).

(Production Example 2: Heterocycle-containing polycarbonate resin R-2)
A polycarbonate resin R-2 was obtained as the second step of Production Example 1 except that the heating bath temperature was changed from 240 ° C. to 280 ° C. to obtain a polycarbonate resin R-2 (hereinafter referred to as “PC resin R”). -2 ").

(Production Example 3: Heterocycle-containing polycarbonate resin R-3)
The DPC amount in Production Example 1 was changed to 115,688 parts by mass instead of 117,957 parts by mass, and the heating tank temperature was changed from 240 ° C. to 280 ° C. as the second step, as in Production Example 2. Except for the above, R-3 was carried out in the same manner as in Production Example 1 to obtain a polycarbonate resin (hereinafter referred to as “PC resin R-3”).

(Production Example 4: Heterocycle-containing polycarbonate resin R-4)
With respect to 73,070 parts by weight of isosorbide (ISB), 109,140 parts by weight of diphenyl carbonate (DPC) and 2.0 × 10 ⁻¹ parts by weight of cesium carbonate as a catalyst were put into a reaction vessel, As a first step of the reaction, the heating bath temperature was heated to 150 ° C., and the raw materials were dissolved while stirring as necessary (about 15 minutes).
Next, the pressure was reduced from normal pressure to 13.3 kPa over 40 minutes, and the generated phenol was extracted out of the reaction vessel while raising the heating bath temperature to 190 ° C. over 40 minutes.
After maintaining the entire reaction vessel at 190 ° C. for 15 minutes, as a second step, the heating bath temperature was increased to 240 ° C. over 30 minutes. Ten minutes after entering the temperature rise, the pressure in the reaction vessel was reduced to 0.200 kPa or less in 30 minutes, and the generated phenol was distilled off. After reaching a predetermined stirring torque, the reaction was stopped, and a molten polycarbonate resin R-4 was obtained from the outlet of the polymerization machine (hereinafter referred to as “PC resin R-4”).

(Production Example 5: heterocycle-containing polycarbonate resin R-5)
As a process of the 2nd step of manufacture example 4, it carried out similarly to manufacture example 1 except having changed heating tank temperature from 240 ° C to 280 ° C, and obtained polycarbonate resin R-5 (henceforth "PC resin R" -5 ").

(Production Example 6: heterocycle-containing polycarbonate resin R-6)
The DPC amount in Production Example 4 was changed to 107,102 parts by mass instead of 109,140 parts by mass, and the heating tank temperature was changed from 240 ° C. to 280 ° C. as the second stage process as in Production Example 2. Except that, polycarbonate resin R-6 was obtained in the same manner as in Production Example 1 (hereinafter referred to as “PC resin R-6”).

<Evaluation of physical properties of polycarbonate resin composition>
(injection molding)
Polycarbonate resin pellets kneaded and prepared by a twin screw extruder were pre-dried at 80 ° C. for 4 hours, and then the pellets and various additives were put into an injection molding machine (Japan Steel Works J75EII type). Various test pieces were prepared by injection molding under the conditions of ℃, a molding cycle of 45 seconds, and a mold temperature of 60 ℃.

(Light resistance evaluation)
About each prepared test piece, the yellow index (YI) value was measured by the C light source reflection method with the spectral color difference meter (Nippon Denshoku Industries Co., Ltd. SE-2000) (initial YI).
Next, using a metering weather meter (M6T, manufactured by Suga Test Instruments Co., Ltd.), each test piece was irradiated for 20 hours at an irradiance of 1.5 kW / m ² , a bath temperature of 63 ° C., and a humidity of 50%. After that, the yellow index (YI) value was measured (YI after the test). ΔYI = (YI after test) − (initial YI)

(Stay stability)
A glass tube with a branch pipe was charged with 30 g of polycarbonate resin, replaced with nitrogen, sealed, and immersed in an oil bath at 250 ° C. for 8 hours. Thereafter, the reduced viscosity of the polycarbonate resin was measured (reduced viscosity after immersion (η _red ) ′). Next, after dipping reduced viscosity (eta _red) ', it was determined the percentage obtained by dividing the reduced viscosity of the polycarbonate resin before immersion (eta _red) (unit:%).

(Reference Examples 53 to 59, Example 60, Reference Example 61, Examples 62 to 65)
Heterocycle-containing polycarbonate resin R-1 (PC resin R-1), heterocycle-containing polycarbonate resin R-2 (PC resin R-2), heterocycle-containing polycarbonate resin R-3 (PC resin R-3), heterocycle Various evaluation was performed about the polycarbonate resin composition prepared by the mixing | blending shown in Table 10 using the following polycarbonate resin R-4 (PC resin R-4), the following antioxidant, the following acidic compound, and the following ultraviolet absorber. .
Each resin and compounding agent was supplied to a twin-screw extruder equipped with 3 vents and water injection equipment, and low molecular weight substances such as phenol were injected and devolatilized at each vent, and then pelletized with a pelletizer. The results are shown in Table 10.

(Comparative Example 25 to Comparative Example 28)
Heterocycle-containing polycarbonate resin R-2 (PC resin R-2), heterocycle-containing polycarbonate resin R-3 (PC resin R-3), heterocycle-containing polycarbonate resin R-6 (PC resin R-6), and the following acidity Various evaluation was performed about the polycarbonate resin composition prepared by the mixing | blending shown in Table 11 using the compound and the following ultraviolet absorber. The results are shown in Table 11.

(Antioxidant)
(1) Irganox 1010: pentaerythrityl-tetrakis {3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate (manufactured by Ciba Specialty Chemicals)
(2) ADK STAB PEP-36: Bis (2,6-t-butyl-4-methylphenyl) pentaerythrityl diphosphite) (manufactured by Adeka Corporation)
(3) Irgaphos 168: Tris (2,4-di-tertbutylphenyl) phosphite (manufactured by Adeka Corporation)

(Acidic compounds)
pTSB: butyl p-toluenesulfonate (manufactured by Tokyo Chemical Industry Co., Ltd.)

(UV absorber)
(1) UV-1: 2- (4,6-diphenyl-1,3,5-triazin-2-yl) -5-[(hexyl) oxy] -phenol (manufactured by Ciba Specialty Chemicals, TINUVIN 1577FF) : Molecular weight 425)
(2) UV-2: 2-ethyl 2′-ethoxyoxalanilide (manufactured by Clariant Japan, Hostavin VSU)
(3) UV-3: Dimethyl (p-methoxybenzylidene) malonate (manufactured by Clariant Japan, Hostavin PR-25)
(4) UV-4: 2- (2′-hydroxy-5′-t-octylphenyl) benzotriazole (manufactured by Ciba Specialty Chemicals, TINUVIN329: molecular weight 323)
(5) UV-5: phenyl salicylate (manufactured by API Corporation, phenyl salicylate: molecular weight 214)
(6) UV-6: ethyl-2-cyano-3,3-diphenyl acrylate (manufactured by BASF Japan, Uvinul 3035: molecular weight 277)

The ratio (ε ₂₁₀ / ε _250-350 ) of the molar absorption coefficient (ε ₂₁₀ ) at a wavelength of ₂₁₀ nm and the maximum value of the molar absorption coefficient (ε _250-350 ) from a wavelength of 250 nm to a wavelength of 350 nm of the ultraviolet absorber used. Is as follows. (1) UV-1: (ε ₂₁₀ / ε _250-350 ) = 0.85 (2) UV-2: (ε ₂₁₀ / ε _250-350 ) = 1.52 (3) UV-3: (ε ₂₁₀ / Ε _250-350 ) = 0.43 (4) UV-4: (ε ₂₁₀ / ε _250-350 ) = 1.69 (5) UV-5: (ε ₂₁₀ / ε _250-350 ) = 4.12 (6) UV-6: (ε ₂₁₀ / ε _250-350 ) = 1.78

  From the results shown in Tables 10 and 11, end groups obtained by polycondensation of isosorbide (ISB), tricyclodecane dimethanol (TCDDM) and diphenyl carbonate (DPC) and represented by the structural formula (2) described above. The polycarbonate resin compositions (Reference Example 53 to Reference Example 59, Example 60, Reference Example 61, and Examples 62 to 65) using a polycarbonate resin having (phenyl group terminal) have a small ΔYI in light resistance evaluation and are colored. It can be seen that this is a material with little light and excellent light resistance.

<Polycarbonate resin composition containing thermoplastic resin>
<Preparation of polycarbonate resin>
(Production Example 7: heterocycle-containing polycarbonate resin R-7)
As the catalyst, 31,260 parts by weight of tricyclodecane dimethanol (hereinafter abbreviated as “TCDDM”), 117,957 parts by weight of diphenyl carbonate (DPC), and 54,220 parts by weight of distilled isosorbide (ISB) Then, 2.2 × 10 ⁻¹ parts by weight of cesium carbonate was put into a reaction vessel, and the heating bath temperature was heated to 150 ° C. under the nitrogen atmosphere as the first step of the reaction, and stirred as necessary. While starting, the raw materials were dissolved (about 15 minutes).
Next, the pressure was reduced from normal pressure to 13.3 kPa over 40 minutes, and the generated phenol was extracted out of the reaction vessel while raising the heating bath temperature to 190 ° C. over 40 minutes.
After maintaining the entire reaction vessel at 190 ° C. for 15 minutes, as a second step, the heating bath temperature was increased to 240 ° C. over 30 minutes. Ten minutes after entering the temperature rise, the pressure in the reaction vessel was reduced to 0.200 kPa or less in 30 minutes, and the generated phenol was distilled off. After reaching a predetermined stirring torque, the reaction is stopped, and 0.0006 parts by mass of butyl p-toluenesulfonate as an acidic compound is added to 3 parts of vent and water injection equipment with respect to 100 parts by mass of the molten polycarbonate resin from the polymerization machine outlet The mixture was supplied to the twin screw extruder provided, and low molecular weight substances such as phenol were poured and devolatilized at each vent, and then pelletized by a pelletizer.
The reduced viscosity of the obtained pellet was 0.571 dl / g, the ratio of double bond terminals to all terminals was 5.6%, and the ratio of phenyl group terminals was 64%.

(Production Example 8: heterocycle-containing polycarbonate resin R-8)
A polycarbonate resin was obtained in the same manner as in Production Example 1 except that the heating bath temperature was changed from 240 ° C. to 280 ° C. as the second step of Production Example 7. The reduced viscosity was 0.554 dl / g, the ratio of double bond terminals to all terminals was 5.5%, and the ratio of phenyl group terminals was 63%.

(Production Example 9: heterocycle-containing polycarbonate resin R-9)
The DPC amount in Production Example 7 was changed to 115,688 parts by mass instead of 117,957 parts by mass, and the heating bath temperature was changed from 240 ° C. to 280 ° C. as the second step, as in Production Example 8. This was carried out in the same manner as in Production Example 1 except that pTSB was not added as an acidic compound to obtain a polycarbonate resin. The reduced viscosity was 0.561 dl / g, the ratio of double bond terminals to all terminals was 4.9%, and the ratio of phenyl group terminals was 10%.

(Production Example 10: heterocycle-containing polycarbonate resin R-10)
With respect to 73,070 parts by weight of isosorbide (ISB), 109,140 parts by weight of diphenyl carbonate (DPC) and 2.0 × 10 ⁻¹ parts by weight of cesium carbonate as a catalyst were put into a reaction vessel, As a first step of the reaction, the heating bath temperature was heated to 150 ° C., and the raw materials were dissolved while stirring as necessary (about 15 minutes).
Next, the pressure was reduced from normal pressure to 13.3 kPa over 40 minutes, and the generated phenol was extracted out of the reaction vessel while raising the heating bath temperature to 190 ° C. over 40 minutes.
After maintaining the entire reaction vessel at 190 ° C. for 15 minutes, as a second step, the heating bath temperature was increased to 240 ° C. over 30 minutes. Ten minutes after entering the temperature rise, the pressure in the reaction vessel was reduced to 0.200 kPa or less in 30 minutes, and the generated phenol was distilled off. After reaching the predetermined agitation torque, the reaction was stopped, and from the polymerizer outlet, 100 parts by mass of polycarbonate resin in a molten state, pTSB 0.0006 parts by mass as an acidic compound, provided with 3 vents and water injection equipment After supplying to the machine and pouring out low molecular weight substances such as phenol at each vent portion, the pellets were formed by a pelletizer. The reduced viscosity was 0.562 dl / g, the ratio of double bond terminals to all terminals was 6.3%, and the ratio of phenyl group terminals was 60%.

(Production Example 11: heterocycle-containing polycarbonate resin R-11)
A polycarbonate resin was obtained in the same manner as in Production Example 10 except that the heating bath temperature was changed from 240 ° C. to 280 ° C. as the second step of Production Example 10. The reduced viscosity was 0.548 dl / g, the ratio of double bond terminals to all terminals was 6.7%, and the ratio of phenyl group terminals was 58%.

(Production Example 12: Heterocycle-containing polycarbonate resin R-12)
The DPC amount in Production Example 10 was changed to 107,102 parts by mass instead of 109,140 parts by mass, and the heating tank temperature was changed from 240 ° C. to 280 ° C. as the second step, as in Production Example 9. This was carried out in the same manner as in Production Example 10 except that pTSB was not added as an acidic substance to obtain a polycarbonate resin. The reduced viscosity was 0.554 dl / g, the ratio of double bond terminals to the total terminals was 5.5%, and the ratio of phenyl group terminals was 11%.

The used thermoplastic resin is as follows.
Polybutylene terephthalate resin (PBT) (manufactured by Mitsubishi Engineering Plastics, trade name Nova Duran 5010)
Amorphous polyethylene terephthalate resin (PETG) (manufactured by Eastman Chemical Japan Co., Ltd., trade name EASTER PETG 6763)
Bisphenol A polycarbonate (PC) (Mitsubishi Engineering Plastics, brand name NOVAREX 7022J)
High density polyethylene (HDPE) (Nippon Polyethylene, trade name Novatec HD HF410)

(Antioxidant)
The antioxidants used are as follows.
A-1: Pentaerythrityl-tetrakis {3- (3,5-di-t-butyl-4-hydroxyphenyl) propionate (manufactured by Ciba Specialty Chemicals, Irganox 1010)
A-2: Bis (2,6-t-butyl-4-methylphenyl) pentaerythrityl diphosphite (manufactured by Adeka, Adeka Stub PEP-36)

<Evaluation of physical properties of polycarbonate resin composition>
(Sheet color (YI))
The pellets obtained in each of Examples and Comparative Examples were obtained by using an injection molding machine (manufactured by Nippon Steel Works Co., Ltd., model: J75EII) at a cylinder temperature of 230 ° C. and a mold temperature of 90 ° C. to obtain a sheet of 60 mm × 4 mmt. The obtained sheet was measured for yellow index (YI) value as an index of yellow discoloration by a C light source reflection method using a spectral color difference meter (ZE-2000 manufactured by Nippon Denshoku Industries Co., Ltd.).

(Stability thermal stability)
A glass tube with a branch pipe was charged with 30 g of resin, replaced with nitrogen, sealed, and immersed in an oil bath at 250 ° C. for 8 hours. The reduced viscosity after immersion was divided by the reduced viscosity before immersion.

(Reference Example 66, Example 67, Reference Example 68 to Reference Example 72)
Using 70 parts by mass of the heterocyclic ring-containing polycarbonate resin R-7 obtained in Production Example 1 and 30 parts by mass of PBT, a twin-screw kneader (Technobel, KZW-15-30MG) equipped with a deaeration device was used. Extrusion was performed at a cylinder temperature of 230 ° C., a screw speed of 200 rpm, and a discharge rate of 1 kg / h to obtain pellets. According to the evaluation method described above, the color tone and the residence heat stability of the sheet were measured. The results are shown in Table 12.

(Comparative Example 29 to Comparative Example 32)
The mixture shown in Table 13 was kneaded in the same manner as in Reference Example 66 to obtain pellets. The evaluation results are shown in Table 13.

  From the results shown in Tables 12 and 13, a phenyl group obtained by polycondensation of isosorbide (ISB), tricyclodecane dimethanol (TCDDM) and diphenyl carbonate (DPC) and represented by the structural formula (2) described above. The polycarbonate resin composition (Reference Example 66, Example 67, Reference Example 68 to Reference Example 72) using a polycarbonate resin having 20% or more of the terminals with respect to the total number of terminals has a small yellow discoloration in the color tone of the sheet. Comparing materials using the same kind of thermoplastic resin, it can be seen that the material is also excellent in retention stability.

Claims (14)

Including at least a structural unit derived from a dihydroxy compound represented by the following general formula (4),
The ratio (A / B) of the number of terminal groups (A) represented by the following structural formula (2) to the total number of terminals (B) is 20% or more,
For 100 parts by weight of the composition having a content of an aromatic monohydroxy compound optionally having an alkyl group having 5 or less carbon atoms of 700 ppm or less,
A polycarbonate resin composition comprising 0.001 part by weight or more and 1 part by weight or less of a phosphorus compound.

  The composition according to claim 1, further comprising 0.001 part by weight or more and 1 part by weight or less of an aromatic monohydroxy compound substituted with one or more alkyl groups having 5 or more carbon atoms with respect to 100 parts by weight of the composition. The polycarbonate resin composition as described. The polycarbonate resin composition according to claim 1, comprising 60 ppm or less of a dihydroxy compound represented by the following general formula (4).

The polycarbonate resin composition according to any one of claims 1 to 3, comprising 60 ppm or less of a carbonic acid diester represented by the following general formula (3).

(In the general formula ^{(3), A 1, A} 2 is an aromatic group which may have an aliphatic group or a substituent having 1 to 18 carbon atoms which may have a substituent, A ¹ and A ² may be the same or different.)   The polycarbonate resin composition according to any one of claims 1 to 4, wherein the glass transition temperature of the polycarbonate resin composition is 90 ° C or higher.   The polycarbonate resin composition further includes a structural unit derived from at least one compound selected from the group consisting of aliphatic dihydroxy compounds, alicyclic dihydroxy compounds, oxyalkylene glycols, and diols having a cyclic acetal structure. The polycarbonate resin composition according to any one of claims 1 to 5.   The polycarbonate resin composition according to any one of claims 1 to 6, further comprising 0.0001 part by weight or more and 2 parts by weight or less of fatty acid with respect to 100 parts by weight of the composition.   The polycarbonate resin composition according to any one of claims 1 to 6, further comprising a natural wax of 0.0001 part by weight or more and 2 parts by weight or less with respect to 100 parts by weight of the composition.   7. The composition according to claim 1, further comprising 0.0001 part by weight or more and 2 parts by weight or less of at least one compound selected from olefinic wax and silicone oil with respect to 100 parts by weight of the composition. The polycarbonate resin composition according to item.   The polycarbonate resin composition according to any one of claims 1 to 6, further comprising 0.0001 parts by weight or more and 0.1 parts by weight or less of an acidic compound with respect to 100 parts by weight of the composition.   The polycarbonate resin according to any one of claims 1 to 6, further comprising 0.0001 parts by weight or more and 0.1 parts by weight or less of at least one acidic compound with respect to 100 parts by weight of the composition. Composition.   The polycarbonate resin composition according to any one of claims 1 to 6, further comprising 0.000001 part by weight or more and 1 part by weight or less of a bluing agent with respect to 100 parts by weight of the composition.   An optical film comprising the polycarbonate resin composition according to any one of claims 1 to 6.   A polycarbonate resin molded article obtained by molding the polycarbonate resin composition according to any one of claims 1 to 6 or the polycarbonate resin composition according to any one of claims 7 to 12.

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