JP2001207049A - Aromatic polycarbonate resin composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an aromatic polycarbonate resin composition that has improved chemical resistance and excellent properties at wet heating by virtue of comprising a specific aromatic polyester resin, while maintaining properties that the aromatic polycarbonate resin inherently has. SOLUTION: This aromatic polycarbonate resin composition comprises (A) 100 pts.wt. of an aromatic polycarbonate resin obtained by an esterinterchange reaction of a dihydric phenol and a carbonate ester, wherein the content of the terminal hydroxyl group of the aromatic polycarbonate resin is 10-70 mol% based on 100 mol% of the total terminal groups of the aromatic polycarbonate resin and (B) 1-200 pts.wt. of ah aromatic polyester resin having an intrinsic viscosity of 0.65-1.20 when measured in an o-chlorophenol solution at 25 deg.C and a degree of crystallization (χc) of 0.20-0.45 when measured by Differential Scanning Calorimetry.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to an aromatic polycarbonate resin composition. More specifically, the present invention relates to an aromatic polycarbonate resin composition comprising a specific aromatic polycarbonate resin obtained by a specific production method and a specific aromatic polyester resin, and having excellent chemical resistance and wet heat fatigue resistance.

[0002]

2. Description of the Related Art Aromatic polycarbonate resins are widely used because they have excellent mechanical properties such as impact resistance, and also have excellent heat resistance and transparency. As a method for producing such an aromatic polycarbonate resin, a method of directly reacting phosgene with a dihydric phenol such as bisphenol A (interfacial polymerization method) or a method of melting a dihydric phenol such as bisphenol and a diallyl carbonate such as diphenyl carbonate is used. There is known a method of performing a transesterification reaction in a state and performing polymerization (hereinafter, sometimes referred to as a melting method). Among such production methods, the method of transesterifying a dihydric phenol with diallyl carbonate has no problem in using a halogen compound such as phosgene or methylene chloride, as compared with the production by an interfacial polymerization method, and is more environmentally friendly. This is a promising technology because it has the advantages of low load and inexpensive manufacturing.

A technique of blending an aromatic polyester resin with an aromatic polyester resin is disclosed in Japanese Patent Laid-Open No. 2-247.
248, etc. However, although the resin compositions described in these patents are excellent in chemical resistance, they have a problem in wet heat properties and cannot be said to be able to withstand long-term use in a high-humidity, high-temperature atmosphere.

[0004] Therefore, there has been a demand for a resin composition having excellent chemical resistance and capable of withstanding long-term use in a high-humidity, high-temperature atmosphere.

[0005]

SUMMARY OF THE INVENTION An object of the present invention is to mix a specific aromatic polycarbonate resin with a specific aromatic polyester resin to have excellent chemical resistance and to be used for a long time in a high humidity and high temperature atmosphere. An object of the present invention is to provide an aromatic polycarbonate resin composition that can withstand, that is, has excellent wet heat fatigue resistance.

[0006]

Means for Solving the Problems The present inventors have found that the above object can be achieved by blending a specific aromatic polyester resin with a specific aromatic polycarbonate resin, and have completed the present invention. . That is, the present invention relates to (A)
When the total terminal of the aromatic polycarbonate resin is 100 mol%, the number of terminal hydroxyl groups of the aromatic polycarbonate resin is 1
0 to 70 mol%, and 100 parts by weight of an aromatic polycarbonate resin obtained by subjecting a dihydric phenol and a carbonate ester to a transesterification reaction, and (B) o-
An aromatic polyester having an intrinsic viscosity of 0.65 to 1.20 when measured at 25 ° C. using chlorophenol as a solvent, and a crystallinity (Δc) of 0.20 to 0.45 measured by DSC. This is achieved by an aromatic polycarbonate resin composition comprising 1 to 200 parts by weight of a resin.

The aromatic polycarbonate resin (A) used in the present invention is usually obtained by reacting a dihydric phenol with a carbonate ester by a melting method. Representative examples of the dihydric phenol used here include:
Hydroquinone, resorcinol, 1,6-dihydroxynaphthalene, 2,6-dihydroxynaphthalene, 4,
4′-dihydroxydiphenyl, bis (4-hydroxyphenyl) methane, 1,1-bis (4-hydroxyphenyl) -1-phenylmethane, bis {(4-hydroxy-3,5-dimethyl) phenyl} methane, 1,1-bis (4-hydroxyphenyl) ethane, 1,2-bis (4
-Hydroxyphenyl) ethane, 1,1-bis (4-hydroxyphenyl) -1-phenylethane, bis (4-
(Hydroxyphenyl) diphenylmethane, bis (4-hydroxyphenyl) -1-naphthylmethane, 2,2-bis (4-hydroxyphenyl) propane (commonly known as bisphenol A), 2- (4-hydroxyphenyl) -2-
(3-hydroxyphenyl) propane, 2,2-bis {(4-hydroxy-3-methyl) phenyl} propane, 2,2-bis {(4-hydroxy-3,5-dimethyl) phenyl} propane, 2, 2-bis {(3,5-dibromo-4-hydroxy) phenyl} propane, 2,2
-Bis {(3,5-dichloro-4-hydroxy) phenyl} propane, 2,2-bis {(3-bromo-4-hydroxy) phenyl} propane, 2,2-bis} (3-chloro-4- (Hydroxy) phenyl} propane, 4-bromoresorcinol, 2,2-bis {(3-isopropyl-4-hydroxy) phenyl} propane, 2,2-bis {(3-phenyl-4-hydroxy) phenyl} propane, , 2-bis {(3-ethyl-4-hydroxy) phenyl} propane, 2,2-bis {(3-n-propyl-4-hydroxy) phenyl} propane, 2,2-bis} (3-sec- Butyl-4-hydroxy) phenyl
Propane, 2,2-bis} (3-tert-butyl-4
-Hydroxy) phenyl {propane, 2,2-bis {(3-cyclohexyl-4-hydroxy) phenyl}
Propane, 2,2-bis {(3-methoxy-4-hydroxy) phenyl} propane, 2,2-bis (4-hydroxyphenyl) hexafluoropropane, 1,1-dibromo-2,2-bis (4- (Hydroxyphenyl) ethylene, 1,1-dichloro-2,2-bis {(3-phenoxy-4-hydroxy) phenyl} ethylene, ethylene glycol bis (4-hydroxyphenyl) ether,
2,2-bis (4-hydroxyphenyl) butane, 2,
2-bis (4-hydroxyphenyl) -3-methylbutane, 2,2-bis (4-hydroxyphenyl) -3,3
-Dimethylbutane, 2,4-bis (4-hydroxyphenyl) -2-methylbutane, 1,1-bis (4-hydroxyphenyl) isobutane, 2,2-bis (4-hydroxyphenyl) pentane, 2,2- Bis (4-hydroxyphenyl) -4-methylpentane, 3,3-bis (4
-Hydroxyphenyl) pentane, 1,1-bis (4-
(Hydroxyphenyl) cyclohexane, 1,1-bis (4-hydroxyphenyl) -4-isopropylcyclohexane, 1,1-bis (4-hydroxyphenyl)-
3,3,5-trimethylcyclohexane, 1,1-bis (4-hydroxyphenyl) cyclododecane, 9,9-
Bis (4-hydroxyphenyl) fluorene, 9,9-
Bis {(4-hydroxy-3-methyl) phenyl} fluorene, α, α′-bis (4-hydroxyphenyl)-
o-diisopropylbenzene, α, α′-bis (4-hydroxyphenyl) -m-diisopropylbenzene,
α, α′-bis (4-hydroxyphenyl) -p-diisopropylbenzene, 1,3-bis (4-hydroxyphenyl) -5,7-dimethyladamantane, 4,4′-
Dihydroxydiphenylsulfone, bis {(3,5-dimethyl-4-hydroxy) phenyl} sulfone, 4,
4'-dihydroxydiphenylsulfoxide, 4,4 '
-Dihydroxydiphenyl sulfide, 4,4'-dihydroxydiphenyl ketone, 4,4'-dihydroxydiphenyl ether, 4,4'-dihydroxydiphenyl ester, and the like, and these can be used alone or as a mixture of two or more.

Among them, bisphenol A, 2,2-bis {(4-hydroxy-3-methyl) phenyl} propane, 2,2-bis {(3,5-dibromo-4-hydroxy) phenyl} propane, ethylene glycol Screw (4
-Hydroxyphenyl) ether, 2,2-bis (4-
Hydroxyphenyl) hexafluoropropane, 2,2
-Bis (4-hydroxyphenyl) butane, 1,1-bis (4-hydroxyphenyl) cyclohexane, 1,1
-Bis (4-hydroxyphenyl) -3,3,5-trimethylcyclohexane, 4,4'-dihydroxydiphenylsulfone, bis {(3,5-dimethyl-4-hydroxy) phenyl} sulfone, 4,4'-dihydroxy Homopolymers or copolymers obtained from at least one bisphenol selected from the group consisting of diphenyl sulfoxide, 4,4'-dihydroxydiphenyl sulfide, and 4,4'-dihydroxydiphenyl ketone are preferred, and bisphenol A is particularly preferred. Homopolymers are preferably used.

Specific examples of the carbonate ester include diphenyl carbonate, ditolyl carbonate, bis (chlorophenyl) carbonate, dinaphthyl carbonate, bis (diphenyl) carbonate, dimethyl carbonate, diethyl carbonate, dibutyl carbonate, dicyclohexyl carbonate and the like. But not limited to these. Preferably, diphenyl carbonate is used. These carbonate esters may also be used alone or in combination of two or more.

In producing the polycarbonate resin by reacting the dihydric phenol with the carbonate ester by a melting method, a catalyst, a terminal terminator,
A dihydric phenol antioxidant may be used. Further, the polycarbonate resin may be a branched polycarbonate resin obtained by copolymerizing a trifunctional or higher polyfunctional aromatic compound, or a polyester carbonate resin obtained by copolymerizing an aromatic or aliphatic bifunctional carboxylic acid, Further, a mixture of two or more of the obtained polycarbonate resins may be used.

[0011] Examples of the trifunctional or higher polyfunctional aromatic compound include phloroglucin, phloroglucid, and 4,6-
Dimethyl-2,4,6-tris (4-hydroxydiphenyl) heptene-2,2,4,6-trimethyl-2,4
6-tris (4-hydroxyphenyl) heptane, 1,
3,5-tris (4-hydroxyphenyl) benzene,
1,1,1-tris (4-hydroxyphenyl) ethane, 1,1,1-tris (3,5-dimethyl-4-hydroxyphenyl) ethane, 2,6-bis (2-hydroxy-5-methylbenzyl) ) -4-Methylphenol, 4
-{4- [1,1-bis (4-hydroxyphenyl) ethyl] benzene} -α, α-dimethylbenzylphenol and other trisphenols, tetra (4-hydroxyphenyl) methane, bis (2,4-dihydroxyphenyl) )
Ketone, 1,4-bis (4,4-dihydroxytriphenylmethyl) benzene, or trimellitic acid, pyromellitic acid, benzophenonetetracarboxylic acid and their acid chlorides, 2- (4-hydroxyphenyl) -2-
(3′-phenoxycarbonyl-4′-hydroxyphenyl) propane, 2- (4-hydroxyphenyl) -2
-(3'-carboxy-4'-hydroxyphenyl) propane and the like, and among them, 1,1,1-tris (4-
Hydroxyphenyl) ethane and 1,1,1-tris (3,5-dimethyl-4-hydroxyphenyl) ethane are preferred, and 1,1,1-tris (4-hydroxyphenyl) ethane is particularly preferred.

The reaction by the melting method is usually a transesterification reaction between a dihydric phenol and a carbonate ester,
The method is carried out by a method in which a dihydric phenol and a carbonate ester are mixed while heating in the presence of an inert gas to distill off the produced alcohol or phenol. The reaction temperature varies depending on the boiling point of the produced alcohol or phenol, but is usually in the range of 120 to 350 ° C.
In the latter stage of the reaction, the pressure of the system is reduced to about 1330 to 13.3 Pa to facilitate the distillation of alcohol or phenol produced. The reaction time is usually about 1 to 4 hours.

In the melting method, a polymerization catalyst can be used to increase the polymerization rate. Examples of the polymerization catalyst include (i) an alkali metal compound or an alkaline earth metal compound and / or (ii) a nitrogen-containing compound. It is condensed using a catalyst composed of a basic compound.

The alkali metal compound or alkaline earth metal compound used as a catalyst includes, for example, hydroxides, hydrocarbons, carbonates, acetates, nitrates, nitrites of alkali metals or alkaline earth metal compounds, Sulfites,
Examples include cyanate, thiocyanate, stearate, borohydride, benzoate, hydrogen phosphate, bisphenol, and phenol salts. Particularly, an alkali metal compound is preferable.

Specific examples of the alkali metal compound include sodium hydroxide, potassium hydroxide, lithium hydroxide, sodium hydrogen carbonate, potassium hydrogen carbonate, lithium hydrogen carbonate, sodium carbonate, potassium carbonate, lithium carbonate, sodium acetate and potassium acetate. , Lithium acetate, sodium nitrate, potassium nitrate, lithium nitrate, sodium nitrite, potassium nitrite, lithium nitrite, sodium sulfite, potassium sulfite, lithium sulfite, sodium cyanate, potassium cyanate, lithium cyanate, sodium thiocyanate, thiocyanate Potassium, lithium thiocyanate, sodium stearate, potassium stearate, lithium stearate, sodium borohydride, lithium borohydride, potassium borohydride, boronate Um, sodium benzoate, potassium benzoate, lithium benzoate, sodium hydrogen phosphate di- hydrogen phosphate, dipotassium hydrogen phosphate, dilithium,
Bisphenol A disodium salt, dipotassium salt, dilithium salt, phenol sodium salt, potassium salt,
Lithium salt and the like. Particularly, a sodium compound is preferable.

The alkali metal compound as a catalyst is preferably in the range of 10 ^-8 to 10 ^-5 mol per mol of dihydric phenol. It is more preferably in the range of 10 ^-8 to 10 ^-6 mol, most preferably in the range of 10 ^-7 to 10 ^-6 mol. Outside the above-mentioned range of use, there may be a problem that various properties of the obtained polycarbonate are adversely affected, and a transesterification reaction does not sufficiently proceed to obtain a high molecular weight polycarbonate.

Examples of the nitrogen-containing basic compound as a catalyst include, for example, tetramethylammonium hydroxide (Me ₄ NOH), tetraethylammonium hydroxide (Et ₄ NOH), tetrabutylammonium hydroxide (Bu ₄ NOH), benzyl Ammonium hydroxides having alkyl, aryl, alkylaryl groups such as trimethylammonium hydroxide (φ-CH ₂ (Me) ₃ NOH), hexadecyltrimethylammonium hydroxide, triethylamine, tributylamine, dimethylbenzylamine, hexadecyl Tertiary amines such as dimethylamine, or tetramethylammonium borohydride (Me ₄ NB
H _4), tetrabutylammonium borohydride (Bu ₄ NBH _4), tetrabutylammonium tetraphenylborate (Bu ₄ NBPh _4), tetramethylammonium tetraphenylborate (Me ₄ NBPh _4), and the like basic salts such as Can be. Among them, tetramethylammonium hydroxide (Me ₄ N
OH), tetraethylammonium hydroxide (Et
₄ NOH), tetrabutylammonium hydroxide (Bu ₄ NOH) are preferable, and tetramethylammonium hydroxide (Me ₄ NOH) is preferred.

The nitrogen-containing basic compound is preferably used in such a ratio that the amount of ammonium nitrogen atoms in the nitrogen-containing basic compound is 1 × 10 ⁻⁵ to 1 × 10 ⁻³ equivalent per mole of dihydric phenol. A more desirable ratio is 2 ×
The ratio is 10 ^{-5 to} 7 × 10 ^-4 equivalent. A particularly desirable ratio is a ratio that is 5 × 10 ^{−5 to} 5 × 10 ⁻⁴ equivalents with respect to the same standard.

In the present invention, if desired, alkali metal or alkaline earth metal alkoxides, alkali metal or alkaline earth metal organic acid salts, zinc compounds, boron compounds, aluminum compounds, silicon compounds, germanium Compounds, organotin compounds, lead compounds,
Catalysts usually used for esterification and transesterification such as osmium compounds, antimony compounds, manganese compounds, titanium compounds, and zirconium compounds can be used. The catalyst may be used alone or in combination of two or more. The amount of these polymerization catalysts used is based on 1 mole of dihydric phenol as a raw material.
It is preferably selected in the range of 1 × 10 ⁻⁹ to 1 × 10 ⁻⁵ equivalents, more preferably 1 × 10 ^{−8 to} 5 × 10 ⁻⁶ equivalents.

The terminal hydroxyl group of the aromatic polycarbonate resin of the present invention is such that all terminals of the aromatic polycarbonate resin are 1-terminal.
When the content is 00 mol%, it is 10 to 70 mol%, preferably 15 to 65 mol%, more preferably 20 to 60 mol%, and most preferably 20 to 45 mol%. Here, the mole% of the terminal hydroxyl groups of the aromatic polycarbonate resin can be determined by ¹ H-NMR by a conventional method.

The ratio of the terminal hydroxyl groups of the aromatic polycarbonate resin of the present invention is determined by the difference between the starting materials, dihydric phenol and carbonate ester (typically, diphenyl carbonate).
Can be controlled by the charging ratio. Although the polymerization temperature and the polymerization conditions such as the degree of vacuum at the time of polymerization vary depending on the polymerization conditions, in general, when the ratio of diphenyl carbonate / dihydric phenol is 1 or more, the number of terminal hydroxyl groups becomes smaller than the number of non-hydroxyl terminals, and when it is less than 1, The number of terminal hydroxyl groups is larger than the number of non-hydroxyl terminals. Further, in such a polymerization reaction, in order to reduce the number of terminal hydroxyl groups, a terminal blocking agent is added to the aromatic polycarbonate resin at a later stage or after completion of the polycondensation reaction to block a part of the terminal hydroxyl groups. Can also be controlled.

Examples of such a terminal blocking agent include phenol, pt-butylphenol, pt-butylphenylphenyl carbonate, pt-butylphenyl carbonate, p-cumylphenol, p-cumylphenylphenyl carbonate, p-cumylphenyl carbonate, bis (chlorophenyl) carbonate, bis (bromophenyl) carbonate, bis (nitrophenyl)
Carbonate, bis (phenylphenyl) carbonate, chlorophenylphenyl carbonate, bromophenylphenyl carbonate, nitrophenylphenyl carbonate, diphenyl carbonate, methoxycarbonylphenylphenyl carbonate, 2,2,4-trimethyl-4- (4-hydroxyphenyl) chroman 2 ,
4,4-trimethyl-2- (4-hydroxyphenyl)
Compounds such as chroman and ethoxycarbonylphenylphenyl carbonate. Among them, 2-chlorophenylphenyl carbonate, 2-methoxycarbonylphenylphenyl carbonate and 2-ethoxycarbonylphenylphenyl carbonate are preferred,
Particularly, 2-methoxycarbonylphenylphenyl carbonate is preferably used.

In the present invention, it is preferable to use a deactivator for neutralizing the activity of the catalyst in the aromatic polycarbonate resin. Specific examples of this deactivator include, for example, benzenesulfonic acid, p-toluenesulfonic acid, methylbenzenebenzenesulfonic acid, ethylbenzenebenzenesulfonic acid, butylbenzenesulfonic acid, octylbenzenesulfonic acid, phenylbenzenebenzenesulfonic acid, p-toluenesulfonic acid. Methyl acid, p-
Sulfonates such as ethyl toluenesulfonate, butyl p-toluenesulfonate, octyl p-toluenesulfonate, and phenyl p-toluenesulfonate; and trifluoromethanesulfonic acid, naphthalenesulfonic acid, sulfonated polystyrene, and methyl acrylate. Sulfonated styrene copolymer, 2-phenyl-2-propyl dodecylbenzenesulfonate, 2-phenyl-2-butyl dodecylbenzenesulfonate, tetrabutylphosphonium octylsulfonate, tetrabutylphosphonium decylsulfonate, benzene Tetrabutylphosphonium sulfonic acid salt, Tetraethylphosphonium dodecylbenzenesulfonic acid salt, Tetrabutylphosphonium dodecylbenzenesulfonic acid salt, Tetrahexyl dodecylbenzenesulfonic acid salt Phosphonium salt, tetraoctylphosphonium dodecylbenzenesulfonate, decyl ammonium butyl sulfate, decyl ammonium decyl sulfate, dodecyl ammonium methyl sulfate, dodecyl ammonium ethyl sulfate, dodecyl methyl ammonium methyl sulfate, dodecyl dimethyl ammonium tetradecyl sulfate, tetradecyl dimethyl ammonium methyl Sulfate,
Tetramethyl ammonium hexyl sulfate, decyl trimethyl ammonium hexadecyl sulfate,
Examples thereof include, but are not limited to, compounds such as tetrabutylammonium dodecylbenzyl sulfate, tetraethylammonium dodecylbenzyl sulfate, and tetramethylammonium dodecylbenzyl sulfate. Two or more of these compounds can be used in combination.

Among the deactivators, phosphonium or ammonium salt type deactivators are themselves particularly stable even at 200 ° C. or higher. When the deactivator is added to the aromatic polycarbonate resin, the polycondensation reaction catalyst can be immediately neutralized to obtain the desired aromatic polycarbonate resin. That is, the deactivator is preferably used in an amount of 0.01 to 500 p with respect to the polycarbonate formed after the polymerization sealing reaction.
pm, more preferably 0.01 to 300 pp
m, particularly preferably 0.01 to 100 ppm.

The deactivator is used in an amount of 0.5 to 5 per mole of the polycondensation reaction catalyst in terms of the ratio to the polycondensation reaction catalyst.
It is preferably used in a proportion of 0 mol. The method for adding the deactivator to the aromatic polycarbonate resin after terminal blocking is not particularly limited. For example, they may be added while the aromatic polycarbonate resin as a reaction product is in a molten state, or may be added after the aromatic polycarbonate resin is pelletized once and then remelted. In the former, the aromatic polycarbonate resin, which is a reaction product in a reactor or an extruder in a molten state obtained after the end-blocking reaction is completed, is added while the aromatic polycarbonate resin is in a molten state. After forming, may be pelletized through an extruder, or, while the aromatic polycarbonate resin obtained by polymerization blocking reaction is pelletized from the reactor through the extruder, adding a quenching agent By kneading, an aromatic polycarbonate resin can be obtained.

The molecular weight of the aromatic polycarbonate resin is
The viscosity average molecular weight (M) is preferably from 12,000 to 30,000, more preferably from 14,000 to 27,000, and particularly preferably from 15,000 to 25,000. An aromatic polycarbonate resin having such a viscosity average molecular weight is preferable because sufficient strength can be obtained as a composition, the melt flowability during molding is good, and molding distortion does not occur.
The viscosity average molecular weight in the present invention is 100 mL of methylene chloride.
The specific viscosity (ηsp) obtained from a solution of 0.7 g of a polycarbonate resin dissolved at 20 ° C. was inserted into the following equation. ηsp / c = [η] + 0.45 × [η] ² c (where [η] is the intrinsic viscosity) [η] = 1.23 × 10 ⁻⁴ M ^0.83 c = 0.7

The aromatic polyester resin (B) used in the present invention is a polymer or copolymer obtained by a condensation reaction comprising an aromatic dicarboxylic acid or its reactive inducer and a diol or its ester derivative as main components. A polymer having an intrinsic viscosity of 0.65 to 1.20 (preferably 0.65 to 1.15) measured at 25 ° C. using o-chlorophenol as a solvent, and An aromatic polyester resin having a measured crystallinity (Δc) of 0.20 to 0.45 is necessary in terms of chemical resistance, wet heat fatigue characteristics, and the like.

The aromatic dicarboxylic acids mentioned here include terephthalic acid, isophthalic acid, orthophthalic acid, 1,5-
Naphthalenedicarboxylic acid, 2,6-naphthalenedicarboxylic acid, 4,4'-biphenyldicarboxylic acid, 4,4'-
Biphenyl ether dicarboxylic acid, 4,4'-biphenylmethane dicarboxylic acid, 4,4'-biphenyl sulfone dicarboxylic acid, 4,4'-biphenyl isopropylidene dicarboxylic acid, 1,2-bis (phenoxy) ethane-
4,4′-dicarboxylic acid, 2,5-anthracenedicarboxylic acid, 2,6-anthracenedicarboxylic acid, 4,4 ′
Aromatic dicarboxylic acids such as -p-terphenylenedicarboxylic acid and 2,5-pyridinedicarboxylic acid are preferably used, and terephthalic acid and 2,6-naphthalenedicarboxylic acid are particularly preferably used.

The aromatic dicarboxylic acids may be used as a mixture of two or more kinds. In addition, if it is a small amount, it is also possible to use one or more kinds of aliphatic dicarboxylic acids such as adipic acid, azelaic acid, sebacic acid and dodecane diacid, and alicyclic dicarboxylic acids such as cyclohexane dicarboxylic acid together with the dicarboxylic acid. . The diol which is a component of the aromatic polyester of the present invention includes ethylene glycol, propylene glycol, butylene glycol, hexylene glycol, neopentyl glycol, pentamethylene glycol, hexamethylene glycol, decamethylene glycol, 2-methyl-1, 3-propanediol,
Aliphatic diols such as diethylene glycol and triethylene glycol, alicyclic diols such as 1,4-cyclohexanedimethanol, diols containing an aromatic ring such as 2,2-bis (β-hydroxyethoxyphenyl) propane, and the like And the like. If the amount is further small, one or more long-chain diols having a molecular weight of 400 to 6000, that is, polyethylene glycol, poly-1,3-propylene glycol, polytetramethylene glycol, or the like may be copolymerized.

The aromatic polyester of the present invention can be branched by introducing a small amount of a branching agent.
The type of the branching agent is not limited, and examples thereof include trimesic acid, trimellitic acid, trimethylolethane, trimethylolpropane, and pentaerythritol.

Specific aromatic polyester resins include polyethylene terephthalate (PET), polypropylene terephthalate, polybutylene terephthalate (PBT), polyhexylene terephthalate, polyethylene naphthalate (PEN), polybutylene naphthalate (PBN), polyethylene -1,2-bis (phenoxy) ethane-4,4′-dicarboxylate, and the like,
Copolyesters such as polyethylene isophthalate / terephthalate, polybutylene terephthalate / isophthalate, and the like, and mixtures thereof can be preferably used. Among them, as the diol component, polyethylene terephthalate and polyethylene naphthalate using ethylene glycol are preferable because thermal properties and mechanical properties are balanced.
A polyethylene terephthalate and polyethylene naphthalate content of 00% by weight or more is preferably 50% by weight or more, particularly preferably a polyethylene terephthalate content of 50% by weight or more. Polybutylene terephthalate and polybutylene naphthalate using butylene glycol as the diol component are also preferably balanced in terms of moldability, mechanical properties, and the like. Furthermore, the weight ratio of polybutylene terephthalate / polyethylene terephthalate is preferably in the range of 2 to 10. preferable.

The structure of the terminal group of the obtained aromatic polyester resin is not particularly limited, except that the ratio of the hydroxyl group and the carboxyl group in the terminal group is almost the same, and that the ratio of one of them is large. You may. Further, the terminal groups may be blocked by reacting a compound having reactivity with such terminal groups.

According to a method for producing such an aromatic polyester resin, a dicarboxylic acid component and the diol component are polymerized while heating in the presence of a polycondensation catalyst containing titanium, germanium, antimony, etc.
It is performed by discharging water or lower alcohol by-product to the outside of the system. For example, as a germanium-based polymerization catalyst, germanium oxide, hydroxide, halide,
Examples thereof include alcoholates and phenolates, and more specifically, germanium oxide, germanium hydroxide, germanium tetrachloride, tetramethoxygermanium and the like.

In the present invention, compounds such as manganese, zinc, calcium, and magnesium used in a transesterification reaction which is a former stage of a conventionally known polycondensation can be used in combination. Alternatively, it is possible to deactivate such a catalyst with a phosphorous acid compound or the like to perform polycondensation.

The aromatic polyester resin used in the present invention has an intrinsic viscosity of 0.65 to 1.20 (preferably 0.65 to 1.15) when measured at 25 ° C. using o-chlorophenol as a solvent. ), But if it is smaller than 0.65, sufficient chemical resistance cannot be obtained,
If it is larger than 1.20, the fluidity is lowered and the moldability is impaired, which is not preferred.

The crystallinity (Δc) of the aromatic polyester resin used in the present invention, measured by DSC, is
It is necessary to be in the range of 0.20 to 0.45,
If it is less than 0.20, sufficient chemical resistance cannot be obtained,
If it exceeds 0.45, sufficient characteristics cannot be obtained, which is not preferable.

The degree of crystallinity (Δc) as measured by DSC in the present invention is as follows: The aromatic polyester resin is heated at a rate of 20 ° C./min in a nitrogen stream at a flow rate of 50 ml / min.
When the aromatic polyester resin is polyethylene terephthalate, it can be obtained from the following equation from the heat of fusion (ΔH unit; J / g) when measured in the measurement temperature range of 35 ° C. to 300 ° C. χc = ΔH / ΔHo (where ΔHo is the heat of fusion of perfect crystalline PET) ΔHo = 140 (J / g) When the aromatic polyester resin is polybutylene terephthalate, it can be obtained by the following equation. χc = ΔH × c c = 6.875 × 10 ⁻³

Further, the aromatic polycarbonate resin composition of the present invention may contain a heat stabilizer. Such heat stabilizers include phosphorous acid, phosphoric acid, phosphonous acid,
Examples thereof include phosphonic acid and esters thereof. Specific examples include triphenyl phosphite, tris (nonylphenyl) phosphite, and tris (2,4-di-tert).
-Butylphenyl) phosphite, tridecyl phosphite, trioctyl phosphite, trioctadecyl phosphite, didecyl monophenyl phosphite, dioctyl monophenyl phosphite, diisopropyl monophenyl phosphite, monobutyl diphenyl phosphite, monodecyl diphenyl Phosphite, monooctyldiphenyl phosphite, bis (2,6-di-ter
t-butyl-4-methylphenyl) pentaerythritol diphosphite, 2,2-methylenebis (4,6-di-tert-butylphenyl) octyl phosphite,
Bis (nonylphenyl) pentaerythritol diphosphite, bis (2,4-di-tert-butylphenyl) pentaerythritol diphosphite, distearylpentaerythritol diphosphite, tributyl phosphate, triethyl phosphate, trimethyl phosphate, triphenyl phosphate , Diphenyl monoorthoxenyl phosphate, dibutyl phosphate,
Dioctyl phosphate, diisopropyl phosphate, tetrakis (4,4'-biphenylenediphosphosphinate) (2,4-di-tert-butylphenyl), dimethyl benzenephosphonate, diethyl benzenephosphonate, dipropyl benzenephosphonate and the like can be mentioned. Of these, tris nonylphenyl phosphite, trimethyl phosphate, tris (2,4-di-tert-butylphenyl) phosphite and dimethyl benzenephosphonate are preferably used. These heat stabilizers may be used alone or in combination of two or more. The amount of the heat stabilizer is preferably 0.0001 to 1 part by weight, more preferably 0.0005 to 0.5 part by weight, more preferably 0.001 to 0.5 part by weight, based on 100 parts by weight of the aromatic polycarbonate resin composition of the present invention. -0.1 parts by weight is more preferred.

Further, the aromatic polycarbonate resin composition of the present invention may be blended with an antioxidant generally known for the purpose of preventing oxidation. Examples of such antioxidants include pentaerythritol tetrakis (3-mercaptopropionate), pentaerythritol tetrakis (3-laurylthiopropionate), glycerol-3-stearylthiopropionate, and 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-
Tris (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′-biphenylenediphosphosphinic 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. The compounding amount of these antioxidants is preferably 0.0001 to 0.5 part by weight based on 100 parts by weight of the aromatic polycarbonate resin composition of the present invention.

Further, in order to further improve the releasability from the mold at the time of melt molding, a release agent is blended with the aromatic polycarbonate resin composition of the present invention within a range not to impair the object of the present invention. Is also possible. Such release agents include:
Examples include olefin wax, olefin wax containing a carboxyl group and / or carboxylic anhydride group, silicone oil, organopolysiloxane, higher fatty acid ester of monohydric or polyhydric alcohol, paraffin wax, beeswax and the like. The amount of the release agent is preferably 0.01 to 5 parts by weight based on 100 parts by weight of the aromatic polycarbonate resin composition of the present invention.

As the olefin wax, use of a polyethylene wax and / or a 1-alkene polymer is particularly preferred, and a very good releasing effect can be obtained. As the polyethylene wax, those generally widely known at present can be used, and examples thereof include those obtained by polymerizing ethylene under high temperature and high pressure, those obtained by thermally decomposing polyethylene, and those obtained by separating and purifying a low molecular weight component from a polyethylene polymer. The molecular weight and the degree of branching are not particularly limited, but the number average molecular weight is preferably 1,000 or more.

The 1-alkene polymer has 5 to 4 carbon atoms.
What polymerized 1-alkene of 0 can be used. The molecular weight of the 1-alkene polymer was 1,000 in number average molecular weight.
0 or more is preferable.

The olefin wax containing a carboxyl group and / or a carboxylic anhydride group is a compound containing a carboxyl group and / or a carboxylic anhydride group by post-treatment of an olefin wax, preferably maleic acid. And / or modified by post-treatment with maleic anhydride. Further, when polymerizing or copolymerizing ethylene and / or 1-alkene, a compound containing a carboxyl group and / or a carboxylic anhydride group copolymerizable with such monomers, preferably maleic acid and / or maleic anhydride is used. Copolymers may also be mentioned, and those obtained by copolymerization include carboxyl groups and / or
Alternatively, a carboxylic acid anhydride group is preferably stably contained at a high concentration. The carboxyl group or carboxylic anhydride group may be bonded to any part of the olefin wax, and the concentration thereof is not particularly limited, but is preferably in the range of 0.1 to 6 meq / g per gram of the olefin wax. . Such olefin-based olefin waxes containing a carboxyl group and / or a carboxylic anhydride group are commercially available, for example, Diacarna-PA30.
[Trade name of Mitsubishi Chemical Corporation], high wax acid treatment type 2203A, 1105A [Trade name of Mitsui Petrochemical Co., Ltd.], etc., and these can be used alone or as a mixture of two or more kinds.

In the case where an inorganic filler is blended in the present invention, the addition of an olefin wax containing a carboxyl group and / or a carboxylic anhydride group can improve the releasability from a mold during melt molding. It can be used preferably not only for further improvement but also for exhibiting the effect of suppressing the decrease in impact strength due to the addition of the inorganic filler.

The higher fatty acid esters include monohydric or polyhydric alcohols having 1 to 20 carbon atoms and 10 to 20 carbon atoms.
It is preferably a partial ester or a total ester with 30 saturated fatty acids. Examples of such partial or total esters of monohydric or polyhydric alcohols and saturated fatty acids include stearic acid monoglyceride, stearic acid diglyceride,
Stearic acid triglyceride, stearic acid monosorbitate, behenic acid monoglyceride, pentaerythritol monostearate, pentaerythritol tetrastearate, pentaerythritol tetraperargonate, 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, and pentaerythritol tetrastearate are preferably used.

A light stabilizer can be added to the aromatic polycarbonate resin composition of the present invention as long as the object of the present invention is not impaired. Such light stabilizers include, for example, 2- (2′-hydroxy-5′-tert-octylphenyl) benzotriazole, 2- (3-tert-
Butyl-5-methyl-2-hydroxyphenyl) -5
Chlorobenzotriazole, 2- (5-methyl-2-hydroxyphenyl) benzotriazole, 2- [2-hydroxy-3,5-bis (α, α-dimethylbenzyl)
Phenyl] -2H-benzotriazole, 2,2′-methylenebis (4-cumyl-6-benzotriazolephenyl), 2,2′-p-phenylenebis (1,3-benzoxazin-4-one) and the like. Can be The compounding amount of such a light stabilizer is preferably 0.01 to 2 parts by weight based on 100 parts by weight of the aromatic polycarbonate resin composition of the present invention.

An antistatic agent can be added to the aromatic polycarbonate resin composition of the present invention as long as the object of the present invention is not impaired. As such an antistatic agent,
For example, polyetheresteramide, glycerin monostearate, ammonium dodecylbenzenesulfonate, phosphonium dodecylbenzenesulfonate, sodium sulfonate, monoglyceride maleic anhydride, diglyceride maleic anhydride, and the like can be mentioned.

The aromatic polycarbonate resin composition of the present invention may contain a flame retardant in an amount that does not impair the object of the present invention. Examples of the flame retardant include a halogenated bisphenol A polycarbonate type flame retardant, an organic salt type flame retardant, an aromatic phosphate ester type flame retardant, and a halogenated aromatic phosphate ester type flame retardant. The above can be blended. Specifically, the polycarbonate type flame retardant of halogenated bisphenol A is a polycarbonate type flame retardant of tetrachlorobisphenol A, tetrachlorobisphenol A and bisphenol A
And a polycarbonate-type flame retardant of tetrabromobisphenol A, a polycarbonate-type flame retardant of tetrabromobisphenol A and bisphenol A, and the like. Specifically, organic salt-based flame retardants include dipotassium diphenylsulfone-3,3'-disulfonate, potassium diphenylsulfon-3-sulfonate, sodium 2,4,5-trichlorobenzenesulfonate, 2,4,5-trisulfonate. Potassium chlorobenzenesulfonate, bis (2,6-dibromo-4-cumylphenyl)
Potassium phosphate, sodium bis (4-cumylphenyl) phosphate, potassium bis (p-toluenesulfone) imide, potassium bis (diphenylphosphate) imide, potassium bis (2,4,6-tribromophenyl) phosphate,
Potassium bis (2,4-dibromophenyl) phosphate, potassium bis (4-bromophenyl) phosphate, potassium diphenylphosphate, sodium diphenylphosphate, potassium perfluorobutanesulfonate, sodium or potassium lauryl sulfate, sodium hexadecyl sulfate Or potassium and the like. Specifically, halogenated aromatic phosphate ester type flame retardants include tris (2,4,6-tribromophenyl) phosphate, tris (2,4-dibromophenyl) phosphate, tris (4-bromophenyl) phosphate and the like. is there. Specifically, aromatic phosphate ester-based flame retardants include triphenyl phosphate, tris (2,6-xylyl) phosphate, tetrakis (2,
6-xylyl) resorcinol diphosphate, tetrakis (2,6-xylyl) hydroquinone diphosphate, tetrakis (2,6-xylyl) -4,4′-biphenol diphosphate, tetraphenylresorcin diphosphate, tetraphenylhydroquinone diphosphate,
Tetraphenyl-4,4'-biphenol diphosphate, aromatic polyphosphate whose aromatic ring source is resorcinol and phenol and does not contain phenolic OH group, aromatic whose aromatic ring source is resorcinol and phenol and contains phenolic OH group Polyphosphate, aromatic polyphosphate whose aromatic ring source is hydroquinone and phenol and does not contain phenolic OH group, similar aromatic polyphosphate containing phenolic OH group, ("aromatic polyphosphate" shown below is phenolic (Aromatic polyphosphate containing an aromatic polyphosphate containing an acidic OH group and aromatic polyphosphate not containing an aromatic OH group) An aromatic polyphosphate in which the aromatic ring source is bisphenol A and phenol, and an aromatic ring source in the form of tetrabromobisphenol A
And phenol as an aromatic polyphosphate, as aromatic ring sources as resorcinol and 2,6-xylenol, as aromatic polyphosphate as hydroquinone and 2,
Aromatic polyphosphate which is 6-xylenol, aromatic polyphosphate whose aromatic ring source is bisphenol A and 2,6-xylenol, aromatic polyphosphate whose aromatic ring source is tetrabromobisphenol A and 2,6-xylenol, etc. It is.

Among these flame retardants, polycarbonate-type flame retardants of halogenated bisphenol A, polycarbonate-type flame retardants of tetrabromobisphenol A,
A copolymerized polycarbonate of tetrabromobisphenol A and bisphenol A is preferable, and a polycarbonate type flame retardant of tetrabromobisphenol A is more preferable. As organic salt-based flame retardants, diphenyl sulfone-3,
3'-dipotassium disulfonic acid, diphenyl sulfone-
Potassium 3-sulfonate and sodium 2,4,5-trichlorobenzenesulfonate are preferred. As aromatic phosphate ester flame retardants, triphenyl phosphate,
Tricresyl phosphate, cresyl diphenyl phosphate, resulcinol bis (dixylenyl phosphate), bis (2,3 dibromopropyl) phosphate,
Tris (2,3 dibromopropyl) phosphate is preferred. Among these, triphenyl phosphate, which is an aromatic phosphate ester flame retardant that does not destroy the ozone layer,
Most preferred are tricresyl phosphate and resulcinol bis (dixylenyl phosphate).

Other resins can be added to the aromatic polycarbonate resin composition of the present invention as long as the object of the present invention is not impaired.

As such other resins, for example, polyamide resins, polyimide resins, polyetherimide resins,
Polyurethane resin, polyphenylene ether resin, polyphenylene sulfide resin, polysulfone resin, polyolefin resin such as polyethylene and polypropylene, polystyrene resin, acrylonitrile / styrene copolymer (AS resin), acrylonitrile / butadiene / styrene copolymer (ABS resin), poly Methacrylate resin,
Resins such as phenolic resins and epoxy resins are exemplified.

An arbitrary method is employed for producing the aromatic polycarbonate resin composition of the present invention. For example, a method of mixing with a tumbler, a V-type blender, a super mixer, a Nauta mixer, a Banbury mixer, a kneading roll, an extruder or the like is appropriately used. The aromatic polycarbonate resin composition thus obtained may be pelletized as it is or once by a melt extruder, and then formed into a molded article by a generally known method such as an injection molding method, an extrusion molding method, or a compression molding method. it can. In order to enhance the miscibility of the aromatic polycarbonate resin composition of the present invention and obtain stable mold release properties and various physical properties, it is preferable to use a twin-screw extruder in melt extrusion. Furthermore, when compounding an inorganic filler, a method of directly charging the extruder from the mouth of the hopper or the middle of the extruder, a method of previously mixing with an aromatic polycarbonate resin or an aromatic polyester resin, some aromatic polycarbonate resins or aromatic polyesters are used. Either a method in which a master is prepared by mixing with a resin in advance and then charged, or a method in which the master is charged in the middle of an extruder can be adopted.

The thus obtained aromatic polycarbonate resin composition of the present invention can be used for housings and chassis of OA equipment such as personal computers, word processors, fax machines, copiers and printers, CD-ROM trays, chassis, turntables and pickup chassis. OA for various gears
Internal parts, TV, video, electric washing machine, electric dryer,
Housing and parts for household appliances such as vacuum cleaners, electric tools such as electric saws and electric drills, telescope barrels, microscope barrels, camera bodies, camera housings, optical equipment parts such as camera barrels, door handles, pillars , Bumpers, instrument panels, and other automotive parts. In particular, automotive parts that require mechanical strength, chemical resistance, wet heat fatigue resistance, etc. (outer door handles, inner door handles, etc.)
And mechanical parts (power tool covers, etc.).

[0054]

EXAMPLES Examples will be further described below with reference to examples. "Parts" or "%" in the examples indicates parts by weight or% by weight,
The symbols for the evaluation items and each component in the composition mean the following.

(1) Terminal hydroxyl group concentration 0.02 g of a sample was dissolved in 0.4 ml of chloroform and subjected to 1H-NMR (EX-27 manufactured by JEOL Ltd.) at 20 ° C.
The terminal hydroxyl group and the terminal phenyl group were measured using 0), and the terminal hydroxyl group concentration was measured by the following formula (i). Terminal hydroxyl group concentration (mol%) = (number of terminal hydroxyl groups / number of all terminals) × 100 (i)

(2) Wet Heat Fatigue Using the so-called C-type measurement sample shown in FIG.
80 ° C, 90% RH atmosphere, sine wave, frequency 1H
Under the conditions of z and a maximum load of 2 kg, the following fatigue tester [Shimadzu Servo Pulser EHF- manufactured by Shimadzu Corporation]
EC5], the number of times until the measurement sample was broken was measured.

(3) Chemical resistance (change in appearance) Thickness 1 / thickness prepared according to ASTM standard D-638
The test piece of 8 ″ was applied with grease (Foil G355 manufactured by Kanto Kasei Kogyo Co., Ltd.) with a strain of 0.5%.
After treatment at 0 ° C. for 24 hours, the appearance of the molded product was visually observed for the occurrence of cracks, and the chemical resistance was determined based on the following criteria. ：: No cracks generated △: Craze generated ×: Cracks generated

(4) Crystallinity of Aromatic Polyester Resin (Δc) 5.00 mg of the aromatic polyester resin was placed in an aluminum sample dish, and heated at a rate of 2 in a nitrogen stream at a flow rate of 50 ml / min.
DSC (T) at 0 ° C / min.
The heat of fusion (ΔH unit; J / g) was measured using an A-Instrument Co., Ltd. type 2910), and was determined by the following equation when the aromatic polyester resin was polyethylene terephthalate. χc = ΔH / ΔHo (where ΔHo is the heat of fusion of perfect crystalline PET) ΔHo = 140 (J / g) In addition, when the aromatic polyester resin is polybutylene terephthalate, it was determined by the following equation. χc = ΔH × c c = 6.875 × 10 ⁻³

[Examples 1 to 4 and Comparative Examples 1 to 6] The components shown in Table 1 were weighed in the amounts shown in the table, mixed uniformly using a tumbler, and then extruded with a 30 mmφ vent (Kobe Steel) The pellets were formed by degassing at a cylinder temperature of 270 ° C. and a degree of vacuum of 1333 Pa using a KTX-30 manufactured by K.K., and the obtained pellets were dried at 120 ° C. for 5 hours, and then subjected to an injection molding machine (Sumitomo Heavy Industries, Ltd. SG15
0U) using a cylinder temperature of 280 ° C. and a mold temperature of 7
A test piece for measurement was prepared at 0 ° C., and the evaluation results are shown in Table 1.
It was shown to.

(A) Aromatic Polycarbonate Resin EX-PC Reference Example 1 Production of Aromatic Polycarbonate Resin of the Present Invention In a reactor equipped with a stirrer and a distillation column, 2,2-bis (4-
228 parts (about 1 mol) of (hydroxyphenyl) propane,
223 parts (about 1.06 mol) of diphenyl carbonate (manufactured by Bayer) and sodium hydroxide 0.0
00024 parts (about 6 × 10 ^-7 mol / bisphenol A1
Mol) and tetramethylammonium hydroxide 0.0
073 parts (about 8 × 10 ⁻⁵ mol / 1 mol of bisphenol A) were charged and purged with nitrogen. This mixture was heated to 200 ° C. and dissolved with stirring. Next, while heating at a reduced pressure of 30 Torr, most of the phenol was distilled off in 1 hour, the temperature was further raised to 270 ° C., and the polymerization reaction was performed for 2 hours at a reduced pressure of 1 Torr. Next, in the molten state, 0.0035 parts (about 6 parts) of tetrabutylphosphonium dodecylbenzenesulfonate as a catalyst neutralizing agent.
× 10 ^-6 mol / 1 mol of bisphenol A)
The reaction was continued at 0 ° C. and 10 Torr or less to obtain an aromatic polycarbonate resin having a viscosity average molecular weight of 23,300 and a terminal hydroxyl group concentration of 34 mol%. This aromatic polycarbonate resin was sent to an extruder by a gear pump. On the way of the extruder, 0.003% by weight of trisnonylphenyl phosphite and 0.03% of trimethyl phosphate were added.
Addition of 5% by weight gave aromatic polycarbonate resin pellets.

CEX-PC Reference Example 2 Production of aromatic polycarbonate resin for comparison The same conditions as in Reference Example 1 except that diphenyl carbonate (manufactured by Bayer) was changed to 219 parts (about 0.995 mol). Produced an aromatic polycarbonate resin. still,
This aromatic polycarbonate resin has a viscosity average molecular weight of 2
3,100 and the terminal hydroxyl group concentration was 74 mol%.

(B) Aromatic polyester resin PET-1: aromatic polyester resin of the present invention polyethylene terephthalate resin (intrinsic viscosity: 0.71)
Crystallinity: 0.24) PET-2; aromatic polyester resin for comparison polyethylene terephthalate resin (intrinsic viscosity: 0.6)
3) PET-3: aromatic polyester resin for comparison polyethylene terephthalate resin (T-manufactured by Teijin Limited)
R-2000 Intrinsic viscosity: 0.73 Crystallinity: 0.1
3) PBT-1: aromatic polyester resin of the present invention polybutylene terephthalate resin (intrinsic viscosity: 0.87
Crystallinity: 0.32)

[0063]

[Table 1]

[0064]

Industrial Applicability The aromatic polycarbonate resin composition of the present invention makes use of the inherent properties of the aromatic polycarbonate resin and contains a specific aromatic polyester resin to improve the chemical resistance and to improve the wet heat It is possible to provide an aromatic polycarbonate resin composition having excellent fatigue properties.

[Brief description of the drawings]

FIG. 1 is a front view of a so-called C-type sample used for evaluating wet heat fatigue resistance. The thickness of the sample is 3 mm. The test is performed by passing a jig of a test machine through the hole indicated by reference numeral 6 and applying a predetermined load in the vertical direction indicated by reference numeral 7.

[Explanation of symbols]

1 Center of C-shaped double circle 2 Radius of inner circle of double circle (20 mm) 3 Radius of outer circle of double circle (30 mm) 4 Center angle (60 °) indicating position of jig mounting hole 5 Gap between sample end faces (13 mm) 6 Jig mounting hole (circle 4 mm in diameter, located at center of sample width) 7 Direction of load imposed on sample during fatigue test

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4J002 CF04X CF05X CF06X CF07X CF08X CF09X CF10X CG01W CG02W CG03W FD040 FD060 FD070 FD100 FD130 FD160 GM00 GQ00 4J029 AA03 AA10 AB02 AB04 AB07 AC03 BA03 AD03 BA03 AD03 BB05A BB10A BB12A BB12B BB12C BB13A BB13B BB15A BB15B BC05A BC06A BD07A BD09A BD09B BD09C BE05A BF09 BF14A BF18 BF20 BF25 BG05X BG08X BG08Y BH02 CB04A CB05A CB06A CB10A CB12A CB14A CC05A CC06A CF08 CF15 CH01 CH02 DA14 DB07 DB11 DB13 FA07 FA13 FA14 FA16 FA17 FC02 FC04 FC05 FC08 FC32 FC33 HA01 HB01 HC04A HC05A JA061 JA091 JA121 JA161 JA201 JA261 JA301 JB131 JB161 JC021 JC091 JC731 JE182 JF021 JF031 JF041 JF321 JF361 JF471 KB05 KD01 KD07 KE02 KE05

Claims (4)

[Claims] (A) When the total terminal of the aromatic polycarbonate resin is 100 mol%, the terminal hydroxyl group of the aromatic polycarbonate resin is 10 to 70 mol%, and the dihydric phenol is transesterified with the carbonate ester. Using 100 parts by weight of the aromatic polycarbonate resin obtained by the reaction and (B) o-chlorophenol as a solvent,
When the intrinsic viscosity measured at 5 ° C is 0.65 to 1.20
And an aromatic polyester resin 1 having a crystallinity (Δc) of 0.20 to 0.45 as measured by DSC.
An aromatic polycarbonate resin composition comprising 200 parts by weight. 2. The aromatic polycarbonate resin composition according to claim 1, wherein (B) the aromatic polyester resin is a polyethylene terephthalate resin and / or a polybutylene terephthalate resin. 3. The method according to claim 1, wherein the aromatic polyester resin (B) is DS.
Crystallinity (Δc) measured by C is 0.22 to 0.4
The aromatic polycarbonate resin composition according to claim 1, wherein 0. 4. The thermoplastic resin composition according to claim 1, wherein the carbonate ester is diphenyl carbonate.