KR20200061464A - High heat resistant polycarbonate and polyarylate alloy composition having enhanced heat resistance and flowability - Google Patents

Abstract

The present invention relates to a highly heat resistant polycarbonate alloy having excellent transparency and heat resistance and improved flowability, and a molded product obtained by using the same. The present invention provides a highly heat resistant polycarbonate and polyarylate alloy resin composition, including: 30-80 wt% of a highly heat resistant polycarbonate copolymer including repeating units represented by the following Chemical Formula 1 and repeating units represented by the following Chemical Formula 2; and 20-70 wt% of polyarylate. The present invention also provides a molded product including the composition.

Description

High heat resistant polycarbonate and polyarylate alloy composition having enhanced heat resistance and flowability}

The present invention relates to a polycarbonate resin composition, and more particularly, to a high heat resistant polycarbonate and polyarylate alloy resin composition having improved heat resistance and fluidity.

Polycarbonate resin is a typical thermoplastic material with a heat deflection temperature of about 130℃, and has excellent mechanical properties such as impact resistance, and excellent dimensional stability, heat resistance, and transparency, for electrical/transition product housing, office equipment, automotive parts, and optics It is widely used in the field of engineering plastics such as film. However, there is a problem that the heat resistance of polycarbonate is insufficient in automobile parts that require higher heat resistance and lamp covers that generate high temperatures.

In addition, polyarylate resins are excellent in heat resistance and transparent, and are used in various fields such as electrical/electronic, mechanical, and lens. However, the polyarylate resin has a high melt viscosity and thus has a problem of poor molding processability.

To improve the molding processability of the polyarylate resin, a polycarbonate/polyarylate alloy may be prepared to improve fluidity, but there is a problem that the heat resistance decreases as the content of the polycarbonate increases.

Korean Patent Publication No. 2007-0036078, including the first resin (polyarylate resin) and the second resin (polycarbonate resin), has the same toughness and moldability as polycarbonate, excellent weatherability, transparency, and surface gloss properties Disclosed is a novel polymer blend that maintains, but does not recognize the problem of molding processability due to an increase in the polyarylate content and a decrease in heat resistance of the blend resin due to an increase in the content of the polycarbonate.

Japanese Patent Laid-Open No. 2002-265766 mentions the high heat resistance and transparency of the arylate resin, and improves the formability including phenolic compounds, phosphorus compounds and lactone compounds to prevent discoloration due to heat generation of light sources. Disclosed polycarbonate/polyarylate alloy resin, there is no mention of the effect of high heat-resistant polycarbonate, there is a problem of lowering the heat resistance of the polycarbonate/polyarylate alloy.

Korean Registered Patent No. 0956048 mentions the minimum content of fluorene-9-one, an impurity of bisphenol fluorene, to suppress the color (yellow) of high heat-resistant polycarbonates prepared using bisphenol fluorene (BPF). Although it discloses a technique for improving the transparency of the copolymer by minimizing the content of impurities in bisphenol fluorene, it does not recognize the problem of lowering heat resistance according to the content of bisphenol fluorene.

The present invention is to provide a high heat-resistant polycarbonate alloy having excellent transparency, excellent heat resistance, and improved fluidity, and a molded product manufactured using the same.

In order to solve the above problems, the present invention is a high heat-resistant polycarbonate copolymer 30 to 80% by weight comprising a repeating unit represented by the following formula (1) and a repeating unit represented by the following formula (2); And 20 to 70% by weight of polyarylate; provides a high heat-resistant polycarbonate and polyarylate alloy resin composition comprising.

[Formula 1]

In Formula 1, X is each independently a halogen atom, an alkyl group having 1 to 8 carbon atoms or an aryl group having 6 to 20 carbon atoms. m and n are each an integer of 0 to 4, A is a single bond, an alkylene group or an alkylidene group having 1 to 20 carbon atoms, a cycloalkylene group or a cycloalkylidene group having 5 to 20 carbon atoms, an arylene group having 6 to 20 carbon atoms. Or an arylalkylene group, -O-, -CO-, -S-, -SO-, or -SO ₂ -bond;

[Formula 2]

In the formula (2), Y is each independently a halogen atom, an alkyl group having 1 to 8 carbon atoms or an aryl group having 6 to 20 carbon atoms, and p and q are each an integer of 0 to 4, respectively.

In addition, the repeating unit represented by the formula (1) is represented by the following formula (3), the repeating unit represented by the formula (2) is a high heat-resistant polycarbonate and polyarylate alloy resin composition, characterized in that represented by the following formula (4) to provide.

[Formula 3]

[Formula 4]

In addition, the high heat-resistant polycarbonate and polyarylate, characterized in that the bisphenol fluorene residue is 20 to 50 mol% with respect to 100 mol% of the bisphenol A residue in Formula 3 and the bisphenol fluorene residue in Formula 4 Provided is an alloy resin composition.

In addition, the polyarylate alloy resin composition has a heat deflection temperature (ASTM D648, 18.5 kgf) of 150°C or higher, and a melt index (MI, ASTM D1238, 330°C, 2.16 kgf) of 10 g/10min or higher. A high heat-resistant polycarbonate and polyarylate alloy resin composition having a transmittance (ASTM D1003, specimen thickness of 1 mm) of 85% or more is provided.

In order to solve the above another problem, the present invention provides a molded article comprising the alloy resin composition.

In addition, the molded article provides a molded article characterized in that it is a car headlamp parts, lamp covers or lighting parts.

According to the present invention, a high heat-resistant polycarbonate/polyarylate having a high transparency and excellent heat resistance by blending a high-heat-resistant polycarbonate copolymer having a further improved heat resistance of polycarbonate with a polyarylate in a specific composition is improved. Can provide alloy.

The high heat-resistant polycarbonate/polyarylate alloy is used at high temperatures and is applicable to automobile headlamp parts requiring excellent heat resistance, and is applicable for lamp covers and lighting requiring heat resistance according to heat generation of a light source. In addition, the fluidity is improved compared to the existing high heat-resistance resin, and the moldability is excellent, so it can be applied to complex structures.

Hereinafter, preferred embodiments of the present invention will be described in detail. In the description of the present invention, when it is determined that a detailed description of related known technologies may obscure the subject matter of the present invention, the detailed description will be omitted. Throughout the specification, when a part “includes” a certain component, this means that other components may be further included instead of excluding other components, unless specifically stated to the contrary.

The present inventors have a problem of insufficient heat resistance when applying a conventional polycarbonate resin to automobile parts and lamp covers in which high temperatures occur, and polyarylate resin has excellent heat resistance, but has a high melt viscosity, which is a technology that has problems in molding processability. It has been found that in the case of an alloy in which a specific high heat-resistant polycarbonate and a polyarylate are mixed in a specific composition as a polycarbonate and polyarylate alloy in the environment, it is possible to overcome all of the above-mentioned problems, and the present invention has been reached.

Therefore, the present invention is a high heat-resistant polycarbonate copolymer 30 to 80% by weight; And polyarylate 20 to 70% by weight; discloses a high heat-resistant polycarbonate and polyarylate alloy resin composition comprising.

The high heat-resistant polycarbonate copolymer includes a repeating unit represented by Chemical Formula 1 and a repeating unit represented by Chemical Formula 2.

[Formula 1]

In Formula 1, X are each independently a halogen atom, an alkyl group having 1 to 8 carbon atoms, or an aryl group having 6 to 20 carbon atoms. m and n are each an integer of 0 to 4, A is a single bond, an alkylene group or an alkylidene group having 1 to 20 carbon atoms, a cycloalkylene group or a cycloalkylidene group having 5 to 20 carbon atoms, an arylene group having 6 to 20 carbon atoms. Or an arylalkylene group, -O-, -CO-, -S-, -SO-, or -SO ₂ -bond.

In X, the halogen atom includes, for example, chlorine, bromine, fluorine, oxo, and the alkyl group having 1 to 8 carbon atoms includes, for example, a methyl group, ethyl group, propyl group, n-butyl group, and isobutyl group. , Amyl group, isoamyl group, pentyl group, hexyl group, heptyl group, octyl group and the like. Examples of the aryl group having 6 to 20 carbon atoms include, for example, phenyl group, methyl phenyl group, tolyl group, xylyl group, naphthyl group And the like.

In addition, in A, the alkylene group or alkylidene group having 1 to 20 carbon atoms includes, for example, methylene group, ethylene group, propylene group, butylene group, pentylene group, hexene group, ethylidene group, isopropylidene group, and the like. The cycloalkylene group or cycloalkylidene group having 5 to 20 carbon atoms may be, for example, a cyclopentylene group, a cyclohexylene group, a cyclopentylidene group, a cyclohexylidene group, or a 3,3,5-trimethyl cyclohexylidene group. And the like, and examples of the arylene group or arylalkylene group having 6 to 20 carbon atoms include phenylene group, naphthylene group, xylene group, and phenylethylidene group.

[Formula 2]

In the formula (2), Y is each independently a halogen atom, an alkyl group having 1 to 8 carbon atoms or an aryl group having 6 to 20 carbon atoms, and p and q are each an integer of 0 to 4, respectively.

In Y, the halogen atom includes, for example, chlorine, bromine, fluorine, oxo, and the alkyl group having 1 to 8 carbon atoms includes, for example, methyl group, ethyl group, propyl group, n-butyl group, and isobutyl group. , Amyl group, isoamyl group, pentyl group, hexyl group, heptyl group, octyl group and the like. Examples of the aryl group having 6 to 20 carbon atoms include phenyl group, tolyl group, xylene group and naphthyl group. You can.

Examples of the bisphenol constituting Formula 1 include bis(4-hydroxyphenyl)methane, bis(3-methyl-4-hydroxyphenyl)methane, bis(3-chloro-4-hydroxyphenyl)methane, bis (3,5-dibromo-4-hydroxyphenyl)methane, 1,1-bis(4-hydroxyphenyl)ethane, 1,1-bis(2-t-butyl-4-hydroxy-3- Methyl phenyl)ethane, 1-phenyl-1,1-bis(2-fluoro-4-hydroxy-3-methyl phenyl)ethane, 2,2-bis(4-hydroxyphenyl)propane (bisphenol-A. BPA), 2,2-bis(3-methyl-4-hydroxyphenyl)propane, 2,2-bis(2-methyl-4-hydroxyphenyl)propane, 2,2-bis(3,5-dimethyl -4-hydroxyphenyl)propane, 1,1-bis(2-t-butyl-4-hydroxy-5-methyl phenyl)propane, 2,2-bis(3-chloro-4-hydroxyphenyl)propane , 2,2-bis(3-fluoro-4-hydroxyphenyl)propane, 2,2-bis(3-bromo-4-hydroxyphenyl)propane, 2,2-bis(3,5-di Fluoro-4-hydroxyphenyl)propane, 2,2-bis(3,5-dichloro-4-hydroxyphenyl)propane, 2,2-bis(3,5-dibromo-4-hydroxyphenyl )Propane, 2,2-bis(4-hydroxyphenyl)butane, 2,2-bis(4-hydroxyphenyl)octane, bis(4-hydroxyphenyl)phenylmethane, 1,1-bis(4- Hydroxy-t-butyl phenyl)propane, 2,2-bis(3-bromo-4-hydroxy-5-chlorophenyl)propane, 2,2-bis(3-phenyl-4-hydroxyphenyl)propane , 2,2-bis(3-methyl-4-hydroxyphenyl)butane, 1,1-bis(2-butyl-4-hydroxy-5-methyl phenyl)butane, 1,1-bis(2-t -Butyl-4-hydroxy-5-methyl phenyl)butane, 1,1-bis(2-t-butyl-4-hydroxy-5-methyl phenyl)isobutane, 1,1-bis(2-t- Amyl-4-hydroxy-5-methyl phenyl)butane, 2,2-bis(3,5-dichloro-4-hydroxyphenyl)butane, 2,2-bis(3,5-dibromo-4- Bis(hydroxyaryl) such as hydroxyphenyl)butane, 4,4-bis(4-hydroxyphenyl)heptane, 1,1-bis(2-t-butyl-4-hydroxy-5-methyl phenyl)heptane )Alkanes, 1,1-bis(4-hydroxy Phenyl)cyclopentane, 1,1-bis(4-hydroxyphenyl)cyclohexane, 1,1-bis(3-methyl-4-hydroxyphenyl)cyclohexane, 1,1-bis(3-cyclohexyl- 4-hydroxyphenyl)cyclohexane, 1,1-bis(3-phenyl-4-hydroxyphenyl)cyclohexane, 1,1-bis(4-hydroxyphenyl)-3,3,5-trimethyl cyclohexane Bis (hydroxyaryl) ethers, such as bis (hydroxyaryl) cycloalkanes, bis (4-hydroxyphenyl) ether, bis (4-hydroxy-3- methyl phenyl) ether, bis (4- Bis (hydroxyaryl) sulfides such as hydroxyphenyl) sulfide and bis (3-methyl-4-hydroxyphenyl) sulfide, bis (4-hydroxyphenyl) sulfoxide, bis (3-methyl-4-hydride) Bis (hydroxyaryl) sulfoxides, such as hydroxyphenyl) sulfoxide and bis (3-phenyl-4-hydroxyphenyl) sulfoxide, bis (4 hydroxyphenyl) sulfone, and bis (3-methyl-4-hydride) Bis(hydroxyaryl)sulfones such as hydroxyphenyl)sulfone and bis(3-phenyl-4-hydroxyphenyl)sulfone, 4,4'-dihydroxybiphenyl, 4,4'-dihydroxy-2 ,2'-dimethylbiphenyl, 4,4'-dihydroxy-3,3'-dimethylbiphenyl, 4,4'-dihydroxy-3,3'-dicyclohexylbiphenyl, 3,3' And dihydroxybiphenyls such as -difluoro-4,4'-dihydroxybiphenyl, and preferably 2,2-bis(4-hydroxyphenyl)propane (bisphenol-A). Can be

In addition, as the bisphenol constituting the formula (2), for example, 9,9-bis(4-hydroxyphenyl)fluorene, 9,9-bis(4-hydroxy-3,5-dimethylphenyl) fluorene or Derivatives, and the like, and preferably 9,9-bis(4-hydroxyphenyl)fluorene (BPF).

In addition, as the component derived from the carbonate unit constituting the above Chemical Formula 1 and Chemical Formula 2, a diaryl carbonate compound, a dialkyl carbonate compound, or an alkyl aryl carbonate carbonate may be used as the carbonic acid diester. Examples of the diaryl carbonate compound include diphenyl carbonate, ditolyl carbonate, bis(chlorophenyl)carbonate, dinaphthyl carbonate, bisphenol A bis phenyl carbonate, and the like. Ethyl carbonate, dimethyl carbonate, dibutyl carbonate, dicyclohexyl carbonate, bisphenol A bis methyl carbonate, and the like. Examples of the alkyl aryl carbonate carbonate include methyl phenyl carbonate, ethyl phenyl carbonate, butyl phenyl carbonate, and cyclohexyl phenyl. Carbonate, bisphenol A methyl phenyl carbonate, and the like.

In the present invention, in general, a polycarbonate resin that is a polymer obtainable by using a phosgene method in which various dihydroxy diaryl compounds react with phosgene or a transesterification reaction in which dihydroxy diaryl compounds react with diphenyl carbonate, etc. , In order to impart better heat resistance, a repeating unit represented by Chemical Formula 2 was introduced as a high heat-resistant monomer having various bulky and rigid structures.

In the present invention, the high heat-resistant polycarbonate copolymer may be prepared by melt-polymerizing a monomer constituting the repeating unit residue represented by Chemical Formula 1 and a monomer constituting the repeating unit residue represented by Chemical Formula 2 and a carbonate monomer. Hereinafter, non-phosgene using bisphenol-A (Bisphenol-A, BPA) and diphenyl carbonate (DPC) as raw materials using bisphenol-fluorene (BPF) as a high heat-resistant monomer as a monomer. The melt polymerization method will be described as an example.

Monomers (BPF, BPA and DPC) and catalyst are introduced into the reactor, and BPF is used by replacing part of the content of BPA in a molar ratio. The DPC/(BPA+BPF) molar ratio is about 1 to 1.1, and a potassium hydroxide solution (KOH solution) is used as a polymerization catalyst. The temperature inside the reactor is gradually raised from 170 to 190°C to 280 to 300°C, and the condensation polymerization reaction proceeds while gradually lowering the pressure from 760 torr to 0.5 to 2 torr. A phenol is recovered as a reaction by-product, and after the reaction, the reactant is quenched in water to prepare a high heat-resistant polycarbonate copolymer (BPF-PC) (see Scheme 1 below).

[Scheme 1]

Here, the content of the added BPF is preferably 20 to 50 mol% relative to the total total 100 mol% of BPA and BPF. If the BPF content is less than 20 mol%, the heat resistance may not be sufficiently improved, and if it exceeds 50 mol%, the viscosity of the polymer may rapidly increase and thus the polymerization degree may not be increased as much as possible, resulting in a decrease in molecular weight, thereby sufficiently improving the heat resistance. You may not be able to. In addition, the high heat-resistant polycarbonate copolymer added with BPF has an advantage of excellent heat resistance and fluidity, but since transparency may be slightly lowered due to discoloration during polymerization, it is an important factor in the present invention to control the BPF content to a specific level.

In the present invention, the high heat-resistant polycarbonate copolymer is included in a content of 30 to 80% by weight for the balance of properties according to the purpose of the final resin composition, preferably 30 to 70% by weight. When the content of the high heat-resistant polycarbonate copolymer is less than 30% by weight, the degree of improvement in fluidity of the final resin composition may be insufficient, and when it exceeds 80% by weight, transparency may be reduced due to the color of the high heat-resistant polycarbonate.

The polyarylate used in the present invention is an aromatic polyester resin composed of an aromatic dicarboxylic acid residue unit and a bisphenol residue unit.

The production of the polyarylate is not particularly limited, and known methods such as an interfacial polymerization method and a melt polymerization method can be used.

Precursors for introducing the aromatic dicarboxylic acid residues include, for example, terephthalic acid and isophthalic acid.

Precursors for introducing the bisphenol residues include, for example, 2,2-bis(4-hydroxyphenyl)propane, 2.2-bis(4-hydroxy-3,5-dimethylphenyl)propane, 2,2-bis(4 -Hydroxy-3,5-dibromophenyl)propane, 2,2-bis(4-hydroxy-3,5-dichlorophenyl)propane, 4,4'-dihydroxydiphenylsulfone, 4,4 '-Dihydroxydiphenyl ether, 4,4'-dihydroxydiphenyl sulfide, 4,4'-dihydroxydiphenylketone, 4,4'-dihydroxydiphenylmethane, 1,1- Bis(4-hydroxyphenyl)cyclohexane and the like, and the compounds may be used alone or in combination of two or more.

In the present invention, the polyarylate is included in an amount of 20 to 70% by weight for the balance of properties according to the purpose of the final resin composition, and preferably, in an amount of 30 to 70% by weight. When the polyarylate content is less than 20% by weight, the transparency of the final resin composition may be lowered, and when it exceeds 70% by weight, the degree of fluidity improvement may be insufficient.

Meanwhile, in the present invention, the polyarylate has a number average molecular weight (Mn) of 1,000 to 100,000 g/mol, preferably 5,000 to 30,000 g/mol, and a weight average molecular weight (Mw) of 10,000 to 100,000 g/mol, preferably It may be used in the form of a powder of 20,000 ~ 50,000 g / mol.

In the present invention, the production of the high heat-resistant polycarbonate and polyarylate alloy resin composition may be made by blending the high heat-resistant polycarbonate copolymer and polyarylate. For example, the high heat-resistant polycarbonate copolymer and polyarylate may be melt-kneaded and pelletized through a twin-screw extruder set at a cylinder temperature of 260 to 290°C. At this time, additives can be added as needed, such as antioxidants, mold release agents and UV stabilizers. On the other hand, the high heat-resistant polycarbonate / polyarylate alloy pellets can be prepared as a specimen through injection molding after drying.

The high heat-resistant polycarbonate and polyarylate alloy resin composition according to the present invention has excellent transparency, excellent heat resistance, and improved fluidity. Specifically, the high heat-resistant polycarbonate and polyarylate alloy resin composition has a heat deflection temperature (ASTM D648, 18.5 kgf) of 150°C or higher, and a melt index (MI, ASTM D1238, 330°C, 2.16 kgf) of 10 g. /10min or more, the light transmittance (ASTM D1003, specimen thickness 1mm) may be 85% or more, preferably, the heat distortion temperature (ASTM D648, 18.5 kgf) is 160°C or more, and the melt index (MI, ASTM D1238, 330 ℃, 2.16 kgf) is 15 g/10min or more, and the light transmittance (ASTM D1003, specimen thickness 1mm) may be 87% or more.

The high heat resistance, flowability, and transparency at the same time, the high heat resistance polycarbonate and polyarylate alloy resin composition according to the present invention can be applied to automobile headlamp parts requiring further improved heat resistance, and also provides heat resistance according to heat generation of the light source. It is applicable for the required lamp cover and lighting.

Hereinafter, a specific embodiment according to the present invention will be described.

Preparation Example: Preparation of high heat-resistant polycarbonate copolymer

BPF, BPA, PPPBP (2-phenyl-3,3'-bis(4-hydroxyphenyl)phthalimidine) and DPC are used as monomers in the reactor together with the catalyst, and BPF or PPPBP is a part of the content of BPA in Table 1 below. It was used as an alternative to the molar ratio of. The DPC/(BPA+BPF) molar ratio was about 1.05, and a KOH solution was used as a polymerization catalyst. The inside temperature of the reactor was gradually raised from 180°C to 290°C, and the condensation polymerization reaction proceeded while gradually lowering the pressure from 760 torr to 1 torr. Phenol was recovered as a reaction by-product, and after the reaction, the reactant was quenched in water to prepare a high heat-resistant polycarbonate copolymer.

Example 1

High heat-resistant polycarbonate copolymer and polyarylate (PAR-RK, UNITIKA, number average molecular weight (Mn) 13,700 g/mol and weight average molecular weight) prepared according to the above manufacturing example through a twin-screw extruder set at a cylinder temperature of 260 to 290°C (Mw) 31,000 g/mol of low molecular weight powder-like polyarylate, see Formula 5 below), was melt-kneaded and pelletized to prepare a high heat-resistant polycarbonate and polyarylate alloy resin composition.

[Formula 5]

Examples 2 to 6 and Comparative Examples 1 to 3

High heat resistance in the same manner as in Example 1, except that the type of the high heat resistant polycarbonate copolymer was changed in Example 1 or the content ratio of the high heat resistant polycarbonate copolymer and polyarylate was adjusted as shown in Table 2 below. A polycarbonate and polyarylate alloy resin composition was prepared.

Test example

The resin composition prepared according to the above Examples and Comparative Examples was sufficiently dried and then injected to prepare test specimens, and the heat distortion temperature, melt index, and light transmittance were measured according to the following method, and the results are shown in Table 3 below. .

[How to measure]

(1) Heat distortion temperature (HDT)

Measured at a load of 18.5 kg according to ASTM D648.

(2) Melt Index (MI)

The fluidity was analyzed by measuring the melt index at a load of 2.16 kg under a measurement condition of 330°C according to ASTM D1238.

(3) Light transmittance

Transparency was analyzed by measuring the total light transmittance of the specimen thickness of 1 mm according to ASTM D1003.

Referring to Table 3, when blending a polyarylate with a high heat-resistant polycarbonate copolymer according to the present invention, it can be seen that transparency is excellent, heat resistance is excellent, and fluidity is improved.

On the other hand, when the content of the high heat-resistant polycarbonate copolymer does not reach a certain level (Comparative Example 1), it can be seen that the fluidity decreases. However, when the content is excessive (Example 4), since the transparency is somewhat poor, it can be seen that the content ratio of the high heat-resistant polycarbonate copolymer and the polyarylate is preferably 30 to 70% by weight, respectively.

In addition, in the case of not containing BPF at all in relation to the BPF content in the high heat-resistant polycarbonate copolymer (Comparative Example 2), it can be seen that the heat resistance is significantly reduced, and conversely, when all BPA is replaced by BPF (Comparative Example 3) In addition, not only the transparency was significantly lowered, it was also found that the heat resistance was significantly lowered, because the viscosity of the polymer rapidly increased, so that the polymerization degree could not be increased as much as possible, and the molecular weight was lowered, thereby failing to sufficiently improve the heat resistance.

On the other hand, if the BPF content is less than a certain level (Example 5), or somewhat excessive (Example 6), the heat resistance or transparency may not reach the desired purpose, and thus the BPF content in the high heat-resistant polycarbonate copolymer. It can be seen that it is desirable to maintain a specific range.

In addition, when a monomer such as PPPBP other than the BPF according to the present invention is used as a high heat-resistant monomer (Comparative Example 4), it can be seen that heat resistance is excellent, but both fluidity and transparency are lowered.

The preferred embodiments of the present invention have been described above in detail. The description of the present invention is for illustrative purposes, and those skilled in the art to which the present invention pertains will appreciate that other specific forms can be easily modified without changing the technical spirit or essential features of the present invention.

Therefore, the scope of the present invention is indicated by the following claims rather than the description of the present invention, and all changes or modified forms derived from the meaning, scope and equivalent concepts of the claims are interpreted to be included in the scope of the present invention. Should be.

Claims (4)

30 to 80% by weight of a high heat-resistant polycarbonate copolymer comprising a repeating unit represented by the following Chemical Formula 1 and a repeating unit represented by the following Chemical Formula 2; And polyarylate 20 to 70% by weight; High heat-resistant polycarbonate and polyarylate alloy resin composition comprising:
[Formula 1]

In Formula 1, X is each independently a halogen atom, an alkyl group having 1 to 8 carbon atoms or an aryl group having 6 to 20 carbon atoms. m and n are each an integer of 0 to 4, A is a single bond, an alkylene group or an alkylidene group having 1 to 20 carbon atoms, a cycloalkylene group or a cycloalkylidene group having 5 to 20 carbon atoms, an arylene group having 6 to 20 carbon atoms. Or an arylalkylene group, -O-, -CO-, -S-, -SO-, or -SO ₂ -bond;
[Formula 2]

In the formula (2), Y is each independently a halogen atom, an alkyl group having 1 to 8 carbon atoms or an aryl group having 6 to 20 carbon atoms, and p and q are each an integer of 0 to 4, respectively. According to claim 1,
The repeating unit represented by Chemical Formula 1 is represented by the following Chemical Formula 3, and the repeating unit represented by Chemical Formula 2 is represented by the following Chemical Formula 4, wherein the high heat-resistant polycarbonate and polyarylate alloy resin composition.
[Formula 3]

[Formula 4]

According to claim 2,
The bisphenol fluorene residue in the total amount of 100 mol% of the bisphenol A residue in the formula (3) and the bisphenol fluorene residue in the formula (4) is 20 to 50 mol%, characterized in that the high heat-resistant polycarbonate and polyarylate alloy Resin composition. The polyarylate alloy resin composition has a heat deflection temperature (ASTM D648, 18.5 kgf) of 150°C or higher, a melt index (MI, ASTM D1238, 330°C, 2.16 kgf) of 10 g/10min or higher, and light transmittance ( ASTM D1003, specimen thickness 1mm) is a high heat-resistant polycarbonate and polyarylate alloy resin composition, characterized in that at least 85%.