JP2014136710A - Aromatic polycarbonate resin composition and molded product thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an aromatic polycarbonate resin composition which has excellent inherent characteristics of an aromatic polycarbonate resin such as impact resistance and heat-resistant stability and to provide a molded product excellent in chemical resistance and appearance by solving a problem with poor appearance in a composite resin composition in which a polyethylene-based resin is blended with an aromatic polycarbonate resin in order to improve the chemical resistance.SOLUTION: There is provided a resin composition which comprises, as resin components, 100 mass% of the total of (A) 55 to 85 mass% of an aromatic polycarbonate resin, (B) 10 to 30 mass% of an aromatic polyester resin and/or an alicyclic polyester resin and (C) 5 to 15 mass% of a polyethylene-based resin, wherein (C) the polyethylene-based resin is composed of (c-1) 50 to 90 mass% of a low density polyethylene and (c-2) 10 to 50 mass% of a polyethylene-based ionomer.

Description

  The present invention relates to an aromatic polycarbonate resin composition containing an aromatic polycarbonate resin, a polyester resin and a polyethylene resin as resin components. Specifically, an aromatic polycarbonate resin composition in which the problem of poor appearance when a polyethylene resin is blended with an aromatic polycarbonate resin for the purpose of improving chemical resistance is improved by blending a polyester resin and a polyethylene ionomer, and this The present invention relates to a molded product formed by molding an aromatic polycarbonate resin composition.

  Aromatic polycarbonate resins are excellent in impact resistance, heat stability, rigidity, dimensional stability, etc., and are therefore used in a wide range of applications such as electrical equipment, communication equipment, precision machinery, and automobile parts. However, since the aromatic polycarbonate resin has low chemical resistance, various attempts have been made to combine it with a polyethylene resin in order to improve chemical resistance.

  However, the blended material of the aromatic polycarbonate resin and the polyethylene resin causes poor appearance such as pearly luster and surface layer peeling of the resulting molded product due to the low compatibility between the aromatic polycarbonate resin and the polyethylene resin. There's a problem.

Conventionally, in order to solve this problem, Patent Document 1 proposes a silane-modified polyethylene resin as a polyethylene resin.
Patent Document 2 proposes a method in which a reactive group-containing polyolefin resin and a polyolefin resin are used in combination and a quaternary phosphonium salt is further blended.
However, these conventional techniques still cannot provide satisfactory effects, and Patent Document 2 has a problem of decomposition of the aromatic polycarbonate resin with a quaternary phosphonium salt.

  Various techniques for blending an ionomer into an aromatic polycarbonate resin have been proposed. For example, Patent Document 3 discloses a layer obtained by blending an aromatic polycarbonate resin with an ionomer copolymer of ethylene and acrylic acid or methacrylic acid. In the patent document 4, the composition which prevented the crack is blended with an ionomer as a nucleating agent in the polyester / polycarbonate resin composition, and in the patent document 5, an ethylene / unsaturated carboxylic acid copolymer resin is used. An ionomer resin composition containing 98 to 70% ionomer resin and 2 to 30% by mass of a polycarbonate resin or a polyester resin is described, and these are all three-component systems of aromatic polycarbonate resin / polyester resin / polyethylene resin. It does not suggest compatibilization in the composite material.

JP 2011-116927 A JP 2012-41415 A Japanese Patent Laid-Open No. 62-116656 JP-A-8-325445 JP 2004-231746 A

  The present invention solves the problem of poor appearance in a composite resin composition in which an aromatic polycarbonate resin is blended with a polyethylene resin to improve chemical resistance, and the aromatic polycarbonate resin inherent in impact resistance, heat stability, etc. It is an object of the present invention to provide an aromatic polycarbonate resin composition that provides a molded product having excellent chemical resistance and excellent chemical resistance and appearance, and a molded product formed by molding this aromatic polycarbonate resin composition. .

  As a result of intensive studies to solve the above problems, the present inventor, as an aromatic polycarbonate resin, an aromatic polyester resin and / or an alicyclic polyester resin, a low-density polyethylene and a polyethylene ionomer as a polyethylene resin, It has been found that the above-mentioned problems can be solved by blending at a predetermined ratio.

  The present invention has been achieved based on such findings, and the gist thereof is as follows.

[1] As a resin component, (A) aromatic polycarbonate resin 55 to 85% by mass, (B) aromatic polyester resin and / or alicyclic polyester resin 10 to 30% by mass, (C) polyethylene resin 5 to 15 A resin composition containing a total of 100% by mass of (C) polyethylene resin (C-1) 50 to 90% by mass of low density polyethylene and (C-2) 10 to 50 mass of (C-2) polyethylene ionomer. %. An aromatic polycarbonate resin composition characterized by comprising:

[2] An aromatic polycarbonate resin composition characterized in that, in [1], 3 to 20 parts by mass of (D) a reinforcing material is contained per 100 parts by mass of the resin component.

[3] In [1] or [2], (B) the aromatic polyester resin is polybutylene terephthalate and / or polyethylene terephthalate, and the alicyclic polyester resin is poly (1,4-cyclohexanedimethanol-1,4 -Aromatic polycarbonate resin composition, characterized in that it is cyclohexanedicarboxylate).

[4] In any one of [1] to [3], (C) polyethylene resin is a mixture of (C-1) low density polyethylene and (C-2) polyethylene ionomer with other resin components. An aromatic polycarbonate resin composition characterized by being previously melt-mixed.

[5] A molded product obtained by molding the aromatic polycarbonate resin composition according to any one of [1] to [4].

  According to the present invention, (A) aromatic polycarbonate resin, (B) aromatic polyester resin and / or alicyclic polyester resin, (C-1) low-density polyethylene, and (C-2) polyethylene-based ionomer (C) By adding a polyethylene resin at a predetermined ratio, chemical resistance is improved without deteriorating the appearance of the molded product while maintaining the original characteristics of the aromatic polycarbonate resin. It is possible to provide an aromatic polycarbonate resin composition excellent in impact resistance, heat stability, chemical resistance, appearance of molded product, and moldability, and a molded product thereof.

  Hereinafter, the present invention will be described in detail with reference to embodiments and examples, but the present invention is not limited to the embodiments and examples described below, and may be arbitrarily selected without departing from the scope of the present invention. You can change it to

[Overview]
The aromatic polycarbonate resin composition of the present invention includes, as a resin component, at least (A) an aromatic polycarbonate resin, (B) an aromatic polyester resin and / or an alicyclic polyester resin, and (C-1) a low density. It contains (C) polyethylene resin composed of polyethylene and (C-2) polyethylene ionomer at a specific ratio. The aromatic polycarbonate resin composition of the present invention may further contain (D) a reinforcing material, and may further contain other components as necessary.

  According to the present invention, chemical resistance can be improved by blending (A) aromatic polycarbonate resin with (C) polyethylene resin at a predetermined ratio, and (C) together with polyethylene resin ( B) While blending an aromatic polyester resin and / or an alicyclic polyester resin, (C-1) a low density polyethylene and (C-2) a polyethylene ionomer at a predetermined ratio as a (C) polyethylene resin. By using this, the compatibility between (A) aromatic polycarbonate resin and (C) polyethylene resin is improved, and problems caused by resin compatibility defects such as pearl luster and surface layer peeling are reduced, and the appearance of molded products is improved. Can be.

[(A) aromatic polycarbonate resin]
The (A) aromatic polycarbonate resin used in the present invention (hereinafter sometimes referred to as “component (A)”) reacts an aromatic dihydroxy compound or a small amount thereof with phosgene or a carbonic acid diester. It is the thermoplastic polymer or copolymer which may be branched and is obtained by making it. The production method of the aromatic polycarbonate resin is not particularly limited, and those produced by a conventionally known phosgene method (interfacial polymerization method) or melting method (transesterification method) can be used. Moreover, when the melting method is used, an aromatic polycarbonate resin in which the amount of OH groups in the terminal groups is adjusted can be used.

  As the raw material aromatic dihydroxy compound, 2,2-bis (4-hydroxyphenyl) propane (= bisphenol A), tetramethylbisphenol A, bis (4-hydroxyphenyl) -p-diisopropylbenzene, hydroquinone, resorcinol, 4 , 4-dihydroxydiphenyl and the like, preferably bisphenol A. In addition, a compound in which one or more tetraalkylphosphonium sulfonates are bonded to the above aromatic dihydroxy compound can also be used.

  In order to obtain a branched aromatic polycarbonate resin, a part of the above-mentioned aromatic dihydroxy compound is mixed with the following branching agents, that is, phloroglucin, 4,6-dimethyl-2,4,6-tri (4-hydroxyphenyl). Heptene-2,4,6-dimethyl-2,4,6-tri (4-hydroxyphenyl) heptane, 2,6-dimethyl-2,4,6-tri (4-hydroxyphenylheptene-3,1, Polyhydroxy compounds such as 3,5-tri (4-hydroxyphenyl) benzene and 1,1,1-tri (4-hydroxyphenyl) ethane, and 3,3-bis (4-hydroxyaryl) oxindole (= isa) Tin bisphenol), 5-chloruisatin, 5,7-dichloroisatin, 5-bromoisatin, etc. Dose, the aromatic dihydroxy compound is usually 0.01 to 10 mol%, preferably 0.1 to 2 mol%.

  (A) As aromatic polycarbonate resin, among the above-mentioned, polycarbonate resin derived from 2,2-bis (4-hydroxyphenyl) propane, or 2,2-bis (4-hydroxyphenyl) propane and other Polycarbonate copolymers derived from aromatic dihydroxy compounds are preferred. Further, it may be a copolymer mainly composed of a polycarbonate resin, such as a copolymer with a polymer or oligomer having a siloxane structure.

  The aromatic polycarbonate resin mentioned above may be used individually by 1 type, and 2 or more types may be mixed and used for it.

  In order to adjust the molecular weight of the aromatic polycarbonate resin, a monovalent aromatic hydroxy compound may be used. Examples of the monovalent aromatic hydroxy compound include m- and p-methylphenol, m- and p-. And propylphenol, p-tert-butylphenol, p-long chain alkyl-substituted phenol and the like.

The molecular weight of the (A) aromatic polycarbonate resin used in the present invention is arbitrary depending on the application and may be appropriately selected and determined. From the viewpoint of moldability, strength, etc., the molecular weight of the (A) aromatic polycarbonate resin is determined by viscosity. The average molecular weight [Mv] is 15,000 to 40,000, preferably 15,000 to 30,000. As described above, when the viscosity average molecular weight is 15,000 or more, the mechanical strength tends to be further improved, which is more preferable in the case of use in applications requiring high mechanical strength. On the other hand, when the viscosity average molecular weight is 40,000 or less, a decrease in fluidity tends to be suppressed and improved, which is more preferable from the viewpoint of easy molding processability. The viscosity average molecular weight [Mv] here is the viscosity average molecular weight [Mv] converted from the solution viscosity, using methylene chloride as a solvent, and using an Ubbelohde viscometer, the intrinsic viscosity [η] (unit dl / g) is obtained and means a value (viscosity average molecular weight: Mv) calculated from Schnell's viscosity formula, that is, η = 1.23 × 10 ⁻⁴ M ^0.83 . Here, the intrinsic viscosity [η] is a value calculated from the following equation by measuring the specific viscosity [η _sp ] at each solution concentration [C] (g / dl).

  (A) The viscosity average molecular weight of the aromatic polycarbonate resin is preferably 17,000 to 30,000, particularly preferably 19,000 to 27,000. Two or more types of aromatic polycarbonate resins having different viscosity average molecular weights may be mixed. In this case, an aromatic polycarbonate resin having a viscosity average molecular weight outside the above-mentioned preferred range may be mixed. In this case, the viscosity average molecular weight of the mixture is preferably within the above range.

[(B) Aromatic polyester resin and / or alicyclic polyester resin]
Among (B) aromatic polyester resin and / or alicyclic polyester resin (hereinafter sometimes referred to as “component (B)”) used in the present invention, (B) aromatic polyester resin is particularly preferable. Although there is no limitation, it is preferable to use polybutylene terephthalate and / or polyethylene terephthalate. The alicyclic polyester resin, that is, the aliphatic polyester resin having an alicyclic structure is not particularly limited, but poly (1,4 -Cyclohexanedimethanol-1,4-cyclohexanedicarboxylate) is preferably used.

  Hereinafter, the aromatic polyester resin and the alicyclic polyester resin suitable for the present invention will be described. In addition, in this invention, 1 type (s) or 2 or more types of aromatic polyester resin may be used as (B) component, 1 type or 2 or more types of alicyclic polyester resin may be used, and aromatic You may use combining the 1 type (s) or 2 or more types of a polyester resin, and the 1 type (s) or 2 or more types of an alicyclic polyester resin.

{Aromatic polyester resin}
The aromatic polyester resin refers to a polyester resin having an aromatic ring in a polymer chain unit. For example, an aromatic dicarboxylic acid component and a diol (and / or ester or halide thereof) component are the main components. Is a polymer or copolymer obtained by polycondensation.

  Examples of the aromatic dicarboxylic acid component include phthalic acid, terephthalic acid, isophthalic acid, orthophthalic acid, 1,5-naphthalenedicarboxylic acid, 2,5-naphthalenedicarboxylic acid, 2,6-naphthalenedicarboxylic acid, biphenyl-2, 2'-dicarboxylic acid, biphenyl-3,3'-dicarboxylic acid, biphenyl-4,4'-dicarboxylic acid, diphenyl ether-4,4'-dicarboxylic acid, diphenylmethane-4,4'-dicarboxylic acid, diphenylsulfone-4 , 4′-dicarboxylic acid, diphenylisopropylidene-4,4′-dicarboxylic acid, anthracene-2,5-dicarboxylic acid, anthracene-2,6-dicarboxylic acid, p-terphenylene-4,4′-dicarboxylic acid, Pyridine-2,5-dicarboxylic acid, succinic acid, adipic acid, sebacic acid, suberic acid, Line acid, and dimer acid.

  These aromatic dicarboxylic acid components may be used alone or in combination of two or more at any ratio.

  Of these aromatic dicarboxylic acids, terephthalic acid is preferred.

  As long as the effects of the present invention are not impaired, an alicyclic dicarboxylic acid such as adipic acid, pimelic acid, suberic acid, azelaic acid, dodecanedioic acid, sebacic acid, dimer acid or the like is used in combination with these aromatic dicarboxylic acids. May be.

  Examples of the diol component include aliphatic glycols, polyoxyalkylene glycols, alicyclic diols, and aromatic diols.

  Examples of the aliphatic glycols include ethylene glycol, trimethylene glycol, propylene glycol, 1,4-butanediol, 1,3-butanediol, neopentyl glycol, hexanediol, octanediol, decanediol and the like having 2 to 2 carbon atoms. Among these, aliphatic glycols having 2 to 12 carbon atoms, particularly 2 to 10 carbon atoms are preferable.

  Examples of the polyoxyalkylene glycols include glycols having 2 to 4 carbon atoms in the alkylene group and having a plurality of oxyalkylene units, such as diethylene glycol, dipropylene glycol, ditetramethylene glycol, triethylene glycol, tripropylene glycol, Examples include tritetramethylene glycol.

  Examples of alicyclic diols include 1,4-cyclohexanediol, 1,4-cyclohexanedimethylol, hydrogenated bisphenol A, and the like. Examples of aromatic diols include 2,2-bis- (4- (2-hydroxyethoxy) phenyl) propane and xylylene glycol.

  Examples of other diol components include esters of the diols described above, and halogenated diols such as halides such as adducts of tetrabromobisphenol A and alkylene oxide (such as ethylene oxide and propylene oxide) of tetrabromobisphenol A. These diol components may be used alone or in combination of two or more at any ratio. If the amount is small, long chain diols having a molecular weight of 400 to 6000, such as polyethylene glycol, poly-1,3-propylene glycol, and polytetramethylene glycol may be used.

  As the aromatic polyester resin used in the present invention, polyalkylene terephthalate is preferable. Here, the polyalkylene terephthalate refers to a resin containing an alkylene terephthalate structural unit, and may be a copolymer of an alkylene terephthalate structural unit and another structural unit.

  Examples of the polyalkylene terephthalate used in the present invention include polyethylene terephthalate (PET), polypropylene terephthalate, polybutylene terephthalate (PBT), polyethylene naphthalate (PEN), polybutylene naphthalate (PBN), and poly (cyclohexane-1,4). -Dimethylene-terephthalate), polytrimethylene terephthalate and the like.

  In addition to the above, the polyalkylene terephthalate used in the present invention includes an alkylene terephthalate copolymer having an alkylene terephthalate structural unit as a main structural unit, and a polyalkylene terephthalate mixture having polyalkylene terephthalate as a main component. Furthermore, what contains or copolymerized elastomer components, such as polyoxytetramethylene glycol (PTMG), can also be used.

  Examples of the alkylene terephthalate copolyester include a copolyester composed of two or more diol components and terephthalic acid, and a copolyester composed of a diol component, terephthalic acid, and a dicarboxylic acid other than terephthalic acid. When two or more kinds of diol components are used, they may be selected and determined as appropriate from the above-mentioned diol components, but the monomer unit copolymerized with alkylene terephthalate which is the main constituent unit is within 25% by mass. It is preferable because the heat resistance becomes good.

  For example, ethylene glycol / isophthalic acid / terephthalic acid copolymer (isophthalic acid copolymerized polyethylene terephthalate), 1,4-butanediol / isophthalic acid / terephthalic acid copolymer (isophthalic acid copolymerized polybutylene terephthalate), In addition to the alkylene terephthalate copolyester having an alkylene terephthalate structural unit as a main structural unit, 1,4-butanediol / isophthalic acid / decanedicarboxylic acid copolymer and the like can be mentioned. Of these, an alkylene terephthalate copolyester is preferred.

  In the case of using an alkylene terephthalate copolyester as the aromatic polyester resin used in the present invention, the above-mentioned isophthalic acid copolymerized polybutylene terephthalate, isophthalic acid copolymerized polyethylene terephthalate, and the like are preferable. From the viewpoint, those having an isophthalic acid component within 25% by mass are preferred.

  In the present invention, particularly in terms of compatibility and heat resistance, it is preferable to use polybutylene terephthalate (PBT) and / or polyethylene terephthalate (PET) as the aromatic polyester resin. In that respect, it is preferable to use polybutylene terephthalate (PBT).

<Polybutylene terephthalate>
Polybutylene terephthalate refers to a resin having a structure in which terephthalic acid units and 1,4-butanediol units are ester-bonded. In the present invention, it is preferable to use polybutylene terephthalate in which 50 mol% or more of dicarboxylic acid units are terephthalic acid units and 50 mol% or more of diol components are 1,4-butanediol units. The proportion of terephthalic acid units in all dicarboxylic acid units is preferably 70 mol% or more, more preferably 80 mol% or more, particularly preferably 95 mol% or more, and optimally 98 mol% or more. The proportion of 1,4-butanediol units in all diol units is preferably 70 mol% or more, more preferably 80 mol% or more, particularly preferably 95 mol% or more, and optimally 98 mol% or more. When the terephthalic acid unit and the 1,4-butanediol unit are at least the above lower limit, the crystallization speed becomes appropriate and the moldability becomes good.

  When polybutylene terephthalate contains a dicarboxylic acid unit other than terephthalic acid, there is no particular limitation on the dicarboxylic acid other than terephthalic acid. For example, phthalic acid, isophthalic acid, 4,4′-diphenyldicarboxylic acid, 4,4 ′ -Aromatic dicarboxylic acids such as diphenyl ether dicarboxylic acid, 4,4'-benzophenone dicarboxylic acid, 4,4'-diphenoxyethane dicarboxylic acid, 4,4'-diphenylsulfone dicarboxylic acid, 2,6-naphthalenedicarboxylic acid; 1 , 2-cyclohexanedicarboxylic acid, 1,3-cyclohexanedicarboxylic acid, 1,4-cyclohexanedicarboxylic acid and other alicyclic dicarboxylic acids; malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid , Aliphatic dicarboxylic acids such as sebacic acid; It can be mentioned. These dicarboxylic acid units can be introduced into the polymer skeleton by using a dicarboxylic acid or a dicarboxylic acid derivative such as a dicarboxylic acid ester or a dicarboxylic acid halide as a raw material.

  When polybutylene terephthalate contains a diol unit other than 1,4-butanediol, the diol other than 1,4-butanediol is not particularly limited. For example, ethylene glycol, diethylene glycol, polyethylene glycol, 1,2 -Fats such as propanediol, 1,3-propanediol, polypropylene glycol, polytetramethylene glycol, dibutylene glycol, 1,5-pentanediol, neopentyl glycol, 1,6-hexanediol, 1,8-octanediol Diols; cycloaliphatic diols such as 1,2-cyclohexanediol, 1,4-cyclohexanediol, 1,1-cyclohexanedimethylol, 1,4-cyclohexanedimethylol; xylylene glycol, 4,4′-dihydride And aromatic diols such as roxybiphenyl, 2,2-bis (4-hydroxyphenyl) propane, and bis (4-hydroxyphenyl) sulfone;

  Polybutylene terephthalate is further a hydroxycarboxylic acid such as lactic acid, glycolic acid, m-hydroxybenzoic acid, p-hydroxybenzoic acid, 6-hydroxy-2-naphthalenecarboxylic acid, p-β-hydroxyethoxybenzoic acid; Monofunctional compounds such as acid, stearyl alcohol, benzyl alcohol, stearic acid, benzoic acid, t-butylbenzoic acid, benzoylbenzoic acid; tricarbaric acid, trimellitic acid, trimesic acid, pyromellitic acid, gallic acid, trimethylolethane , Trimethylolpropane, glycerol, pentaerythritol and the like trifunctional or higher polyfunctional compounds; and the like.

Although there is no restriction | limiting in particular about the intrinsic viscosity of the polybutylene terephthalate used for this invention, a lower limit may be determined from a viewpoint of mechanical properties, and an upper limit may be determined from a viewpoint of moldability. The intrinsic viscosity of polybutylene terephthalate is preferably 0.70 to 3.0 dl / g, more preferably 0.80 to 1.5 dl / g, and particularly preferably 0.80 to 1.2 dl / g. . When the intrinsic viscosity is within the above range, good mechanical properties can be exhibited and good moldability can be obtained. The intrinsic viscosity is a value measured at a temperature of 30 ° C. using a mixed solvent of 1,1,2,2-tetrachloroethane / phenol = 1/1 (weight ratio).
In the present invention, two or more polybutylene terephthalates having different intrinsic viscosities may be used in combination.

The terminal carboxyl group concentration of the polybutylene terephthalate used in the present invention is preferably 120 eq / Ton or less, more preferably 2 to 80 eq / Ton, and particularly preferably 5 to 60 eq / Ton. When the terminal carboxyl group concentration is 120 eq / Ton or less, hydrolysis resistance and fluidity are improved, and it is preferably 2 eq / Ton or more from the viewpoint of productivity. The terminal carboxyl group concentration can be obtained by dissolving polybutylene terephthalate in benzyl alcohol and titrating with an aqueous solution of 0.1N (mol / L) sodium hydroxide, and the above value is the carboxyl per 10 ⁶ g. It is a group equivalent.

<Polyethylene terephthalate>
Polyethylene terephthalate is the ratio of oxyethylene oxyterephthaloyl units consisting of terephthalic acid and ethylene glycol (hereinafter sometimes referred to as “ET units”) to the total repeating units (hereinafter sometimes referred to as “ET ratio”). .) Is preferably a polyethylene terephthalate resin of 90 equivalent% or more, and the polyethylene terephthalate in the present invention may contain constituent repeating units other than ET units in a range of less than 10 equivalent%. The polyethylene terephthalate in the present invention is produced using terephthalic acid or its lower alkyl ester and ethylene glycol as main raw materials, but other acid components and / or other glycol components may be used together as raw materials.

  Acid components other than terephthalic acid include phthalic acid, isophthalic acid, naphthalenedicarboxylic acid, 4,4'-diphenylsulfone dicarboxylic acid, 4,4'-biphenyldicarboxylic acid, 1,4-cyclohexanedicarboxylic acid, 1,3- Examples thereof include phenylenedioxydiacetic acid and structural isomers thereof, dicarboxylic acids such as malonic acid, succinic acid and adipic acid and derivatives thereof, and oxyacids such as p-hydroxybenzoic acid and glycolic acid or derivatives thereof.

  Examples of diol components other than ethylene glycol include 1,2-propanediol, 1,3-propanediol, 1,4-butanediol, aliphatic glycols such as pentamethylene glycol, hexamethylene glycol, and neopentyl glycol, cyclohexane Examples include alicyclic glycols such as dimethanol, and aromatic dihydroxy compound derivatives such as bisphenol A and bisphenol S.

  A raw material containing terephthalic acid or an ester-forming derivative thereof and ethylene glycol as described above is subjected to esterification or transesterification in the presence of an esterification catalyst or transesterification catalyst, and bis (β-hydroxyethyl) terephthalate and Then, an oligomer thereof is formed, and then a melt polycondensation is performed under high temperature and reduced pressure in the presence of a polycondensation catalyst and a stabilizer to obtain a polymer.

{Alicyclic polyester resin}
The alicyclic polyester resin is mainly composed of a dicarboxylic acid component mainly composed of an alicyclic dicarboxylic acid and / or an ester-forming derivative thereof and a diol component mainly composed of an alicyclic diol, and both components are esterified. Or a polycondensation reaction.
In addition, it shall mean that it is 80 mol% or more with respect to a dicarboxylic acid component and a diol component here, respectively as a main component. The alicyclic polyester resin can contain components other than the dicarboxylic acid component and the diol component in the raw material used as long as the performance thereof is not impaired. And about 10 mol% or less with respect to the total number of moles of the diol component.

The alicyclic dicarboxylic acid and / or ester-forming derivative thereof is not particularly limited as long as two carboxyl groups are bonded to the alicyclic structure. For example, 1,2-cyclohexanedicarboxylic acid 1,3-cyclohexanedicarboxylic acid, 1,4-cyclohexanedicarboxylic acid, 1,4-decahydronaphthalenedicarboxylic acid, 1,5-decahydronaphthalenedicarboxylic acid, 2,6-decahydronaphthalenedicarboxylic acid, 2,7 -Decahydronaphthalenedicarboxylic acid, its ester-forming derivative, etc. are mentioned. Among these, 1,4-cyclohexanedicarboxylic acid and / or ester-forming derivatives thereof are easy to obtain industrially because the molding temperature of the obtained alicyclic polyester resin is close to the molding temperature of the conventional polyester resin. In particular, 1,4-cyclohexanedicarboxylic acid is most preferable in terms of hydrolysis resistance compared to its ester-forming derivative.
In addition, the ratio of the trans isomer and the cis isomer of 1,4-cyclohexanedicarboxylic acid and / or its ester-forming derivative (trans isomer: cis isomer) is usually in the range of 80:20 to 100: 0. 85: 15-100: 0 is preferable from the heat resistant point of the alicyclic polyester resin obtained, More preferably, it is 90: 10-100: 0.

  As the dicarboxylic acid component used for the production of the alicyclic polyester resin, the above alicyclic dicarboxylic acid or its ester-forming derivative is usually 80 mol% or more, preferably 90 mol%, based on the total dicarboxylic acid component. It is contained above, and may contain other aromatic dicarboxylic acid, aliphatic dicarboxylic acid and the like. Specifically, terephthalic acid, phthalic acid, isophthalic acid, phenylenedioxycarboxylic acid, 4,4′-diphenyldicarboxylic acid, 4,4′-diphenylether dicarboxylic acid, 4,4′-diphenylketone dicarboxylic acid, 4,4 Aromatic dicarboxylic acids such as' -diphenoxyethanedicarboxylic acid, 4,4'-diphenylsulfonedicarboxylic acid, 2,6-naphthalenedicarboxylic acid, and succinic acid, glutanic acid, adipic acid, pimelic acid, suberic acid, azelain Examples include acids, sebacic acid, undecadicarboxylic acid, dodecadicarboxylic acid, and alkyl esters and dialkyl esters in which each alkyl group has about 1 to 4 carbon atoms, and halides.

  The alicyclic diol component is not particularly limited as long as two hydroxyl groups are bonded to the alicyclic structure, but since the heat resistance of the obtained polyester resin can be increased, A diol having a 5-membered or 6-membered ring and having two hydroxyl groups is preferable.

Examples of such alicyclic diols include 5-membered members such as 1,2-cyclopentanedimethanol, 1,3-cyclopentanedimethanol, and bis (hydroxymethyl) tricyclo [5.2.1.0] decane. Ring-containing diol, 1,2-cyclohexanediol, 1,3-cyclohexanediol, 1,4-cyclohexanediol, 1,2-cyclohexanedimethanol, 1,3-cyclohexanedimethanol, 1,4-cyclohexanedimethanol, 2 , 2-membered ring-containing diols such as 2-bis (4-hydroxycyclohexyl) -propane, and the like. Of these, diols having two hydroxyl groups bonded to a 6-membered ring, specifically 1,2-cyclohexanedimethanol, 1,3-cyclohexanedimethanol, and 1,4-cyclohexanedimethanol are preferred. 4-cyclohexanedimethanol is preferred. 1,4-Cyclohexanedimethanol has high reactivity because the methylol group is located at the 1st and 4th positions, a polyester having a high glass transition temperature can be obtained, and a polyester resin having a high glass transition temperature can be obtained. This is because it has the advantage of being a product and easy to obtain.
The ratio of trans and cis isomers of 1,4-cyclohexanedimethanol (trans: cis) is in the range of 60:40 to 100: 0 in terms of the glass transition temperature of the resulting alicyclic polyester resin. It is preferable.

  As the diol component used for the production of the alicyclic polyester resin, the alicyclic diol as described above is usually contained in an amount of 80 mol% or more, preferably 90 mol% or more based on the total diol component. If this ratio is less than 80 mol%, the compatibility with the (A) aromatic polycarbonate resin tends to be inferior, and the heat resistance tends to be inferior.

  Other diol components include aliphatic diols such as ethylene glycol, propylene glycol, butanediol, pentanediol and hexanediol, and xylylene glycol, 4,4′-dihydroxybiphenyl, 2,2-bis (4′-hydroxy). And aromatic diols such as phenyl) propane, bis (4-hydroxyphenyl) sulfone, and bis (4-β-hydroxyethoxyphenyl) sulfonic acid.

  Furthermore, as a small amount copolymerization component other than the diol component and the dicarboxylic acid component, for example, hydroxycarboxylic acid such as glycolic acid, p-hydroxybenzoic acid, p-β-hydroxyethoxybenzoic acid, alkoxycarboxylic acid, and stearyl alcohol Monofunctional components such as benzyl alcohol, stearic acid, behenic acid, benzoic acid, t-butylbenzoic acid, benzoylbenzoic acid, tricarbaric acid, trimellitic acid, trimesic acid, pyromellitic acid, naphthalenetetracarboxylic acid, gallic acid Trifunctional or higher functional components such as acid, trimethylolethane, trimethylolpropane, glycerol, pentaerythritol, sugar ester, and the like may be used.

  In addition, as an alicyclic polyester resin, the alicyclic polyester resin obtained from the dicarboxylic acid component which has 1, 4- cyclohexane dicarboxylic acid as a main component, and the diol component which has 1, 4- cyclohexane dimethanol as a main component In particular, poly (1,4-cyclohexanedimethanol-1,4-cyclohexanedicarboxylate) (PCC) is preferable in terms of compatibility with (A) the aromatic polycarbonate resin.

  As a use ratio of each component in the esterification reaction or transesterification reaction between the dicarboxylic acid component and the diol component, the total of the diol components is preferably 1 to 2 moles relative to the total of the dicarboxylic acid components. In particular, when the diol component is mainly composed of a high boiling point such as 1,4-cyclohexanedimethanol, this ratio is preferably 1 to 1.2 moles.

  In the esterification or transesterification reaction and polycondensation reaction for producing the alicyclic polyester resin, it is preferable to use a catalyst in order to obtain a sufficient reaction rate. Such a catalyst is not particularly limited as long as it is a catalyst usually used for esterification or transesterification, and examples thereof include a titanium compound, a germanium compound, an antimony compound, and a tin compound. Among these, titanium compounds are preferable because of their high activity in both the esterification or transesterification reaction and the subsequent polycondensation reaction. Specifically, tetra-n-propyl titanate and tetra-i-propyl titanate are preferred. , Tetra-n-butyl titanate or a hydrolyzate of these organic titanates, etc., and one kind may be used or two or more kinds may be used in combination. Moreover, you may combine with a magnesium compound, a phosphorus compound, etc. as needed. The usage-amount at the time of using a catalyst is in the range of 1-2000 ppm normally with respect to the polyester resin to produce | generate, Preferably it is the range of 10-1000 ppm.

  The intrinsic viscosity of the alicyclic polyester resin used in the present invention is preferably 0.4 to 1.6 dl / g, more preferably 0.6 to 1.5 dl / g. If the intrinsic viscosity is less than 0.4 dl / g, the mechanical strength is insufficient, and if it is greater than 1.6 dl / g, the fluidity is lowered and the moldability is poor. The alicyclic polyester resin used in the present invention may be one obtained by performing solid phase polymerization as necessary to increase the intrinsic viscosity.

  The melting point of the alicyclic polyester resin used in the present invention is usually 200 ° C. or higher, preferably 210 ° C. or higher, and the upper limit is usually about 260 ° C. Among them, as a preferable alicyclic polyester resin, in the case of an alicyclic polyester resin mainly composed of 1,4-cyclohexanedicarboxylic acid as a dicarboxylic acid component and 1,4-cyclohexanedimethanol as a diol component, Is 170 to 250 ° C, preferably 180 to 240 ° C, particularly preferably 190 to 230 ° C.

[(C) Polyethylene resin]
The (C) polyethylene resin (hereinafter sometimes referred to as “(C) component”) used in the present invention may be referred to as (C-1) low density polyethylene (hereinafter referred to as “(C-1) component”). ) And (C-2) polyethylene-based ionomer (hereinafter sometimes referred to as “(C-2) component”). 2) In order to effectively obtain the compatibilizing effect by the polyethylene ionomer, (C-1) the low density polyethylene (C-1) of the polyethylene resin and (C-2) the polyethylene ionomer are mixed with other resin components. It is preferable that the material is previously melt-mixed.

<(C-1) Low density polyethylene>
The (C-1) low density polyethylene used in the present invention is preferably an ethylene copolymer having a density of 0.85 to 0.92 g / cm ³ .

That is, polyethylene is effective in improving the chemical resistance of an aromatic polycarbonate resin. However, when an aromatic polycarbonate resin and an incompatible polyethylene are combined with an aromatic polycarbonate resin, the aromatic polycarbonate resin is used as a matrix. In particular, when a high-density polyethylene with high crystallinity is used as the polyethylene, the domain size becomes large because the compatibility with polycarbonate is greatly inferior. Molding shrinkage of polyethylene occurs after the aromatic polycarbonate resin is solidified, and a void is formed between the aromatic polycarbonate resin matrix and the polyethylene domain. For this reason, peeling (lamellar peeling) at the interface between the aromatic polycarbonate resin matrix and the polyethylene domain is likely to occur, which causes mechanical strength such as poor appearance and impact resistance.
For this reason, in this invention, not a high density polyethylene but (C-1) low density polyethylene is used as polyethylene.

  (C-1) An ethylene copolymer of low density polyethylene is a copolymer of ethylene and a monomer copolymerizable with ethylene, and the copolymerizable monomer is not particularly limited. , Propylene, 1-butene, 1-pentene, 1-hexene, 4-methyl-1-pentene, 1-heptene, 1-octene and other α-olefins, vinyl acetate, isoprene, butadiene, acrylic acid, methacrylic acid, etc. Monocarboxylic acids, or esters thereof, dicarboxylic acids such as maleic acid, fumaric acid, itaconic acid, or acid anhydrides thereof may be used alone or in combination, and these may be copolymerized in the main chain. Those that can be graft-polymerized may be graft-polymerized.

  These ethylene copolymers can be produced by a usual method.

  Among them, preferred ethylene-based copolymers are copolymers of ethylene and one or more of α-olefins having 3 to 10 carbon atoms, preferably 4 to 8 carbon atoms. Polymer, ethylene-1-butene copolymer, ethylene-1-pentene copolymer, ethylene-1-hexene copolymer, ethylene-propylene-hexene copolymer, ethylene-4-methyl-1-pentene copolymer , Ethylene-1-heptene copolymer, ethylene-1-octene copolymer, and the like, and a low density linear ethylene copolymer (LLDPE) in which a copolymer component is introduced into the main chain is particularly preferable.

  If the ethylene content in such an ethylene copolymer is too small, there will be problems of handling deterioration and cost increase due to a decrease in melting point, and if it is too large, whitening will occur due to molding shrinkage due to crystallization. Therefore, the ethylene content in the ethylene copolymer is preferably 90 to 40 mol%, particularly 85 to 50 mol%.

If the density of such an ethylene-based copolymer is too high, the problems in the case of using the above-mentioned high-density polyethylene cannot be solved, and the whitening phenomenon due to voids in the domain, the problem of delamination due to the decrease in the dispersibility of polyethylene There is. By using a low-density ethylene copolymer having a density of 0.92 g / cm ³ or less, the flowability and dispersibility with respect to the aromatic polycarbonate resin are improved, the crystallinity is reduced, and the shrinkage ratio at the time of molding. Is close to the shrinkage of the aromatic polycarbonate resin, and the formation of voids is suppressed. In addition, a relatively small domain is formed and layer peeling is prevented, and further, a polyethylene domain is uniformly dispersed, whereby a molded article having a good pearl gloss and no surface layer peeling can be obtained. However, when the density of the ethylene copolymer is smaller than 0.85 g / cm ³ , the physical properties are lowered. Therefore, (C-1) an ethylene copolymer having a density of 0.85 g / cm ³ or more is used as the low density polyethylene. Use coalescence. (C-1) The density of the ethylene-based copolymer which is a low-density polyethylene is particularly preferably 0.86 to 0.92 g / cm ³ , particularly preferably 0.88 to 0.90 g / cm ³ .

  In the present invention, the density of the ethylene-based copolymer of (C-1) low density polyethylene is a value measured according to the ISO 1183 D method.

  In addition, the (C-1) low density polyethylene used in the present invention has a molecular weight distribution (Mw / Mn) represented by a ratio of a weight average molecular weight (Mw) to a number average molecular weight (Mn) of 1.3 to 4.0. It is preferable that When the molecular weight distribution (Mw / Mn) is larger than 4.0, there is a problem that impact resistance is lowered, and when it is smaller than 1.3, the moldability is inferior. (C-1) The more preferable molecular weight distribution (Mw / Mn) of the low density polyethylene is 1.5 to 3.5.

  The weight average molecular weight (Mw) and the number average molecular weight (Mn) of the low density polyethylene are measured by gel permeation chromatography (GPC: Gel Permeation Chromatography).

  The melt flow rate (MFR) at 190 ° C. of the (C-1) low density polyethylene used in the present invention is 0.01 to 20 g / 10 min, particularly 0.02 to 0.5 g / 10 min. preferable. (C-1) When the MFR of the low density polyethylene is smaller than the above range, dispersibility is poor, and it becomes easy to form a large domain, so that whitening and delamination are likely to occur, and if it is larger than the above range, the domain is greatly stretched. As a result, the appearance is poor due to the pearl luster and the physical properties are likely to deteriorate.

  In particular, by using a low density polyethylene having an MFR of 0.01 to 0.5 g / 10 min and controlling the domain structure of the low density polyethylene so that the minor axis diameter is 0.05 to 2 μm, the layer peeling is performed. By suppressing the formation of voids between the matrix of the aromatic polycarbonate resin and the low density polyethylene domain, an excellent impact resistance improvement effect can be obtained.

  Here, the MFR is a value measured at a temperature of 190 ° C. and a load of 21.18 N in accordance with ISO 1133.

  The (C-1) low density polyethylene used in the present invention may be subjected to a thickening treatment with a peroxide in order to satisfy the above-mentioned preferred MFR. Examples of the peroxide used for the thickening treatment include hydroperoxide, dialkyl peroxide, diacyl peroxide, peroxydicarbonate, peroxyester, peroxyketal, and the like. You may use, and may use 2 or more types together. Further, it is preferable to select an optimum peroxide in consideration of the reactivity of the peroxide at the kneading temperature and the kneading time.

  The thickening treatment with peroxide is a treatment to reduce MFR by heating and kneading the peroxide as described above to low density polyethylene, thereby increasing the viscosity of low density polyethylene whose MFR is outside the above preferred range. Thus, the MFR can be adjusted to a suitable range.

If the amount of peroxide used in this thickening treatment is too large, an excessive crosslinking reaction proceeds, the resin cures and the dispersibility deteriorates, and if it is too small, a sufficient thickening effect cannot be obtained. It is preferable that it is 50-2000 ppm (mass reference | standard) with respect to polyethylene, especially 100-1000 ppm.
Moreover, it is preferable that the temperature at the time of heat-kneading in a thickening process is 150-250 degreeC, especially 170-230 degreeC. If the temperature is too high, the resin is thermally deteriorated, resulting in a decrease in physical properties. If the temperature is too low, the load during kneading increases, the reaction does not proceed sufficiently, and the effect of the crosslinking reaction is not recognized.

  Specifically, the thickening treatment is performed by charging low density polyethylene and a predetermined amount of peroxide into a kneader such as a biaxial kneader, uniaxial kneader or Brabender, and melt-kneading and extruding at a predetermined temperature. Is done.

  In the present invention, (C-1) low density polyethylene may be used by mixing two or more kinds of physical properties such as density, different types of constituent monomers and different ethylene contents.

<(C-2) Polyethylene-based ionomer>
The (C-2) polyethylene ionomer used in the present invention is a highly neutralized metal salt of a random, block, or graft copolymer of ethylene and an acidic vinyl monomer such as an unsaturated carboxylic acid. For example, an ionomer resin obtained by neutralizing at least a part of carboxyl groups of an ethylene / unsaturated carboxylic acid copolymer resin with a metal ion is an aggregate obtained by utilizing the cohesive force of metal ions. Can be mentioned.

  The ethylene / unsaturated carboxylic acid copolymer resin used as the base polymer of the polyethylene ionomer is a copolymer having an unsaturated carboxylic acid content of 1 to 30% by mass, preferably 5 to 25% by mass. Not only a binary copolymer of a saturated carboxylic acid but also a multi-component copolymer in which other monomers are optionally copolymerized.

  The unsaturated carboxylic acid component in the ethylene / unsaturated carboxylic acid copolymer resin is one or more of acrylic acid, methacrylic acid, fumaric acid, maleic acid, maleic anhydride, monomethyl maleate, monoethyl maleate and the like. Of which acrylic acid or methacrylic acid is particularly preferable.

  Other monomers optionally copolymerized in the ethylene / unsaturated carboxylic acid copolymer resin include vinyl acetate, vinyl esters such as vinyl propionate, methyl acrylate, ethyl acrylate, isopropyl acrylate, Unsaturated carboxylic acid esters such as isobutyl acrylate, n-butyl acrylate, isooctyl acrylate, 2-ethylhexyl acrylate, methyl methacrylate, ethyl methacrylate, isobutyl methacrylate, dimethyl maleate, diethyl maleate, One type or two or more types such as carbon oxide and sulfur dioxide can be exemplified. In these, unsaturated carboxylic acid ester, especially acrylic acid ester or methacrylic acid ester are especially preferable. These other monomers may be copolymerized, for example, in the range of 0 to 40% by mass, preferably 0 to 30% by mass in the above-mentioned copolymer resin, but generally when the content of such other monomers increases. Since it is difficult to obtain a composition excellent in rigidity and heat resistance, those which do not contain such a monomer or those which are copolymerized in an amount of 20% by mass or less even if they are contained It is preferred to use.

  As the ethylene / unsaturated carboxylic acid copolymer resin, one having a melt flow rate (MFR) at 190 ° C. and a load of 2160 g of 0.1 to 1000 g / 10 min, particularly about 0.5 to 800 g / 10 min is used. desirable. Such a copolymer resin can be obtained by radical copolymerization under high temperature and high pressure.

  As the (C-2) polyethylene ionomer in the present invention, 10 mol% or more, preferably 10 to 90 mol%, more preferably 15 to 80 mol% of the carboxyl group of the ethylene / unsaturated carboxylic acid copolymer resin is used. Those neutralized with metal ions are used. Examples of the metal ion include alkali metal ions such as lithium and sodium, zinc ions, and polyvalent metal ions such as alkaline earth metals such as magnesium and calcium. Are preferable in terms of the compatibilizing effect and the low thermal decomposability effect of the polycarbonate.

  (C-2) Polyethylene ionomers also have a melt flow rate (MFR) at 190 ° C. and a load of 2160 g of 0.01 to 100 g / 10 min, particularly 0.1 to 50 g in consideration of moldability and mechanical properties. It is preferable to use the one of / 10 min.

  These (C-2) polyethylene ionomers have different physical properties, types of unsaturated carboxylic acids of ethylene / unsaturated carboxylic acid copolymer resins, their contents, types of metal ions, neutralization rates, etc. You may mix and use seeds or more.

<Ratio of (C-1) component and (C-2) component>
The (C) polyethylene resin used in the present invention comprises (C-1) 50 to 90% by mass of low density polyethylene and (C-2) 10 to 50% by mass of polyethylene ionomer (however, (C- 1) The total of the component and the component (C-2) is 100% by mass.)
If the amount of the component (C-1) is larger than the above range and the amount of the component (C-2) is small, the compatibility between the component (C-1) and the polyester is lowered, so that the appearance and surface layer peelability can be improved. On the contrary, when there are many (C-2) components and there are few (C-1) components, impact resistance and the chemical resistance with respect to the organic solvent will fall.

  The (C) polyethylene resin is particularly preferably composed of (C-1) 50 to 90% by mass of low density polyethylene and (C-2) 10 to 50% by mass of polyethylene ionomer, and particularly (C-1). It is preferably composed of 70 to 90% by mass of low-density polyethylene and 10 to 30% by mass of (C-2) polyethylene-based ionomer (however, the total of (C-1) component and (C-2) component is 100). (Mass%).

  As described above, (C-1) low density polyethylene and (C-2) polyethylene ionomer constituting the polyethylene resin are (A) an aromatic polycarbonate resin, (B) an aromatic polyester resin, and Before being mixed with other resin components such as / or alicyclic polyester resin, those previously melt-mixed are preferred. In this case, for example, it is preferable to use a pellet obtained by melting and mixing a predetermined amount of (C-1) low-density polyethylene and (C-2) polyethylene-based ionomer at 200 to 260 ° C.

  In this way, (C-1) low density polyethylene and (C-2) polyethylene ionomer are previously melt-mixed, whereby (C-1) low density polyethylene and (C-2), which are minor components into the resin component. ) Dispersibility of polyethylene ionomer is improved, and (C-2) polyethylene ionomer can function more effectively for compatibilization of (C-1) low density polyethylene and (A) aromatic polycarbonate resin. It becomes possible and it is preferable.

  In this case, only a part of (C-1) low-density polyethylene and / or (C-2) polyethylene-based ionomer is melt-mixed in advance, and the remainder can be mixed with other resin components. It is preferable to melt and mix the total amount of (C-1) low-density polyethylene and (C-2) polyethylene-based ionomer in advance because the above effect can be obtained more reliably.

[Resin component]
The aromatic polycarbonate resin composition of the present invention comprises, as a resin component, (A) an aromatic polycarbonate resin 55 to 85% by mass, (B) an aromatic polyester resin and / or an alicyclic polyester resin 10 to 30% by mass, ( C) It is characterized by containing a total of 100% by mass of 5-15% by mass of polyethylene-based resin.

  When the content of the (A) aromatic polycarbonate resin is less than the above lower limit, the characteristics such as (A) the aromatic polycarbonate resin inherent heat resistance and impact resistance cannot be sufficiently obtained, and the content is larger than the above upper limit. And the content of (B) aromatic polyester resin and / or alicyclic polyester resin and (C) polyethylene-based resin is relatively reduced, and the chemical resistance improvement effect by blending these is sufficiently Can't get.

  Further, when the content of (B) aromatic polyester resin and / or alicyclic polyester resin is less than the above lower limit, compatibility by blending (B) aromatic polyester resin and / or alicyclic polyester resin. The effect of improving the appearance cannot be sufficiently obtained, and the chemical resistance tends to decrease due to an increase in the proportion of the (A) aromatic polycarbonate resin component. When the content of (B) aromatic polyester resin and / or alicyclic polyester resin is higher than the above upper limit, the content of (A) aromatic polycarbonate resin or (C) polyethylene resin is relatively decreased. The impact resistance and heat resistance of these compounds are reduced.

  Further, when the content of the (C) polyethylene resin is less than the above lower limit, the effect of improving the chemical resistance by blending the (C) polyethylene resin cannot be sufficiently obtained, and the content is more than the above upper limit. Since (A) the compatibility with the aromatic polycarbonate resin is greatly reduced, a molded article having a good appearance and no surface peeling cannot be obtained.

  The aromatic polycarbonate resin composition of the present invention has (A) 62.5 to 85 mass% of (A) aromatic polycarbonate resin, and (10) 25 mass% of (B) aromatic polyester resin and / or alicyclic polyester resin, particularly as a resin component. %, (C) a total of 100% by mass of polyethylene-based resin 5 to 12.5% by mass, especially (A) 70 to 85% by mass of aromatic polycarbonate resin, (B) aromatic polyester resin and It is preferable to contain a total of 100% by mass of 10/20% by mass of alicyclic polyester resin and (C) 5-10% by mass of polyethylene-based resin.

[(D) Reinforcement material]
The aromatic polycarbonate resin composition of the present invention may further contain (D) a reinforcing material. By including the (D) reinforcing material, the molded polycarbonate article is reduced in molding shrinkage and linear expansion. Since the dimensional stability of the product is enhanced and the polyethylene domain shape is further reduced, the appearance of the molded product can be further improved.

  (D) Examples of reinforcing materials include glass fillers such as glass fibers (chopped strands), short glass fibers (milled fibers), glass flakes, and glass beads; carbon fillers such as carbon fibers, carbon short fibers, carbon nanotubes, and graphite. ; Whisker such as potassium titanate and aluminum borate; Silicate compounds such as talc, mica, wollastonite, kaolinite, zonotolite, sepiolite, attabargite, montmorillonite, bentonite, smectite; various types such as silica, alumina, calcium carbonate Examples of the inorganic filler include glass fiber, milled fiber, glass bead, talc, mica, wollastonite, and various whiskers. Among these, glass fiber, milled fiber, wollastonite, Click by weight, more preferably wollastonite, talc. These may be used alone or in combination of two or more.

  (D) The shape of the reinforcing material is preferably fibrous, needle-like, plate-like, or spherical, and is more preferably fibrous, needle-like, or plate-like when considering reduction in molding shrinkage rate or linear expansion.

  (D) As a size of a reinforcing material, it is 0.05-50 micrometers in short axis diameter, More preferably, it is 0.1-30 micrometers, More preferably, it is 0.1-20 micrometers. When the minor axis diameter of the reinforcing material is smaller than 0.05 μm, the polyethylene domain shape cannot be sufficiently broken and the effect of improving the appearance of the molded product may not be obtained. On the other hand, when the thickness is larger than 50 μm, the space between the reinforcing materials becomes large, and the appearance is deteriorated between the reinforcing materials.

  Here, the minor axis diameter of the reinforcing material is the length of the portion where the interval between the parallel plates is the smallest when the reinforcing material is assumed to be sandwiched between two parallel plates. If it is fibrous, it corresponds to the fiber diameter, if it is plate-like, it corresponds to the plate thickness, and if it is spherical, it corresponds to the diameter. When the value of the reinforcing material as a product standard is highly likely to vary greatly due to the influence of the kneading process, the cross section in the injection direction of the obtained injection molded product is observed with an SEM (scanning electron microscope). The number average value of the measured values of the minor axis diameters of the 50 reinforcements selected in the above is obtained as the minor axis diameter (average minor axis diameter). The same applies to plate-like and spherical reinforcing materials.

  (D) Aspect ratio of reinforcing material (= major axis diameter / minor axis diameter. The major axis diameter is the length of the portion where the interval between the parallel plates becomes the widest when the reinforcing material is sandwiched between two parallel plates. If the reinforcing material is fibrous, it corresponds to the fiber length, if it is plate-like, it corresponds to the long diameter of the plate surface, and if it is spherical, it corresponds to its diameter. When there is a high possibility that a large difference will occur due to the influence in the kneading process, the cross section in the injection direction of the obtained injection molded product is observed by SEM (scanning electron microscope), and 50 arbitrarily selected reinforcements The average value of the measured values of the major axis diameter of the material is not particularly limited, but is preferably 5 to 100. If the aspect ratio of the reinforcing material is too large, the difference in the thermal shrinkage rate between the orientation direction of the reinforcing material and the direction orthogonal to the reinforcing material becomes too large, and if it is too small, the effect of reducing linear expansion and reinforcing is insufficient.

  As for the aspect ratio, similarly to the short axis diameter, the short axis diameter and the long axis diameter of 50 reinforcing materials arbitrarily selected by SEM observation were measured, and the aspect ratio was calculated for each reinforcing material. Calculated as a number average value.

  When the aromatic polycarbonate resin composition of the present invention includes (D) a reinforcing material, the blending amount of (D) the reinforcing material is (A) an aromatic polycarbonate resin, (B) an aromatic polyester resin and / or a resin component. Alternatively, the total of the alicyclic polyester resin and (C) polyethylene-based resin (hereinafter sometimes simply referred to as “resin component”) is 3 to 20 parts by mass, particularly 5 to 15 parts by mass. It is preferable. (D) If the blending amount of the reinforcing material is less than the above lower limit, the improvement of the appearance of the obtained molded product and the optimization of the elastic modulus and the molding shrinkage rate are insufficient, and if it exceeds the upper limit, the moldability deteriorates and becomes brittle. Problems arise.

  However, the effect of the reinforcing material on the elastic modulus and molding shrinkage varies depending on the shape. For example, in order to equalize the elastic modulus and molding shrinkage of the molded product of the aromatic polycarbonate resin composition to which glass fiber, talc, or wollastonite is added, the glass fiber is used with respect to 100 parts by mass of the resin component. 3 parts by mass, 8 parts by mass for talc, and 5 parts by mass for wollastonite. Therefore, it is preferable that the blending amount of the (D) reinforcing material is appropriately adjusted according to the type of the (D) reinforcing material within the above range.

[Other additives]
The aromatic polycarbonate resin composition of the present invention includes (A) an aromatic polycarbonate resin, (B) an aromatic polyester resin and / or an alicyclic polyester resin, and (C) polyethylene as long as the effects of the present invention are not impaired. In addition to the above-mentioned resin (D) and the reinforcing material (D), other components and various additives may be further contained. Examples of such other components and additives include phosphorus heat stabilizers, antioxidants, mold release agents, ultraviolet absorbers, dyes and pigments, antistatic agents, and other resin components.

<Phosphorus heat stabilizer>
The aromatic polycarbonate resin composition of the present invention can contain a phosphorus heat stabilizer. Phosphorus heat stabilizers are generally effective in improving the residence stability at high temperatures and the heat resistance stability when using resin molded products when melt-kneading resin components.

  Examples of the phosphorus-based heat stabilizer used in the present invention include phosphorous acid, phosphoric acid, phosphorous acid ester, phosphoric acid ester, etc. Among them, trivalent phosphorus is included, and it is easy to express a discoloration suppressing effect. Phosphites such as phosphites and phosphonites are preferred.

  Examples of the phosphite include triphenyl phosphite, tris (nonylphenyl) phosphite, dilauryl hydrogen phosphite, triethyl phosphite, tridecyl phosphite, tris (2-ethylhexyl) phosphite, tris (tridecyl) phosphite. Phyto, tristearyl phosphite, diphenyl monodecyl phosphite, monophenyl didecyl phosphite, diphenyl mono (tridecyl) phosphite, tetraphenyldipropylene glycol diphosphite, tetraphenyltetra (tridecyl) pentaerythritol tetraphosphite, water Bisphenol A phenol phosphite polymer, diphenyl hydrogen phosphite, 4,4′-butylidene-bis (3-methyl-6-tert-butyl) Ruphenyldi (tridecyl) phosphite) tetra (tridecyl) 4,4'-isopropylidenediphenyldiphosphite, bis (tridecyl) pentaerythritol diphosphite, bis (nonylphenyl) pentaerythritol diphosphite, dilaurylpentaerythritol diphos Phyto, distearyl pentaerythritol diphosphite, tris (4-tert-butylphenyl) phosphite, tris (2,4-di-tert-butylphenyl) phosphite, hydrogenated bisphenol A pentaerythritol phosphite polymer, bis ( 2,4-di-tert-butylphenyl) pentaerythritol diphosphite, bis (2,6-di-tert-butyl-4-methylphenyl) pentaerythritol diphosphite, , 2'-methylenebis (4,6-di -tert- butylphenyl) octyl phosphite, bis (2,4-dicumylphenyl) pentaerythritol diphosphite and the like.

  Examples of phosphonites include tetrakis (2,4-di-iso-propylphenyl) -4,4′-biphenylenediphosphonite, tetrakis (2,4-di-n-butylphenyl) -4,4′-biphenyl. Range phosphonite, tetrakis (2,4-di-tert-butylphenyl) -4,4'-biphenylene diphosphonite, tetrakis (2,4-di-tert-butylphenyl) -4,3'-biphenylene diphospho Knight, tetrakis (2,4-di-tert-butylphenyl) -3,3'-biphenylenediphosphonite, tetrakis (2,6-di-iso-propylphenyl) -4,4'-biphenylenediphosphonite, Tetrakis (2,6-di-n-butylphenyl) -4,4′-biphenylenediphosphonite, tetrakis (2,6- -Tert-butylphenyl) -4,4'-biphenylenediphosphonite, tetrakis (2,6-di-tert-butylphenyl) -4,3'-biphenylenediphosphonite, tetrakis (2,6-di-tert) -Butylphenyl) -3,3'-biphenylenediphosphonite and the like.

  Examples of the acid phosphate include methyl acid phosphate, ethyl acid phosphate, propyl acid phosphate, isopropyl acid phosphate, butyl acid phosphate, butoxyethyl acid phosphate, octyl acid phosphate, 2-ethylhexyl acid phosphate, decyl acid phosphate, and lauryl phosphate. Phosphate, stearyl acid phosphate, oleyl acid phosphate, behenyl acid phosphate, phenyl acid phosphate, nonyl phenyl acid phosphate, cyclohexyl acid phosphate, phenoxyethyl acid phosphate, alkoxy polyethylene glycol acid phosphate, bisphenol A acid Sulfate, dimethyl acid phosphate, diethyl acid phosphate, dipropyl acid phosphate, diisopropyl acid phosphate, dibutyl acid phosphate, dioctyl acid phosphate, di-2-ethylhexyl acid phosphate, dioctyl acid phosphate, dilauryl acid phosphate, distearyl acid phenyl Acid phosphate, bisnonylphenyl acid phosphate, etc. are mentioned.

  Among the phosphites, distearyl pentaerythritol diphosphite, tris (2,4-di-tert-butylphenyl) phosphite, bis (2,6-di-tert-butyl-4-methylphenyl) penta Erythritol diphosphite, 2,2′-methylenebis (4,6-di-tert-butylphenyl) octyl phosphite, bis (2,4-dicumylphenyl) pentaerythritol diphosphite are preferable, and heat resistance is good. Tris (2,4-di-tert-butylphenyl) phosphite is particularly preferred in that it is difficult to hydrolyze.

  These phosphorus heat stabilizers may be used alone or in combination of two or more.

  When the aromatic polycarbonate resin composition of the present invention contains a phosphorus-based heat stabilizer, the content thereof is usually 0.001 part by mass or more, preferably 0.003 part by mass or more, with respect to 100 parts by mass of the resin component. More preferably, it is 0.005 mass part or more, Usually 0.1 mass part or less, Preferably it is 0.08 mass part or less, More preferably, it is 0.06 mass part or less. If the content of the phosphorus-based heat stabilizer is less than the lower limit of the above range, the thermal stability effect may be insufficient, and if the content of the phosphorus-based heat stabilizer exceeds the upper limit of the above range , There is a possibility that the effect will reach its peak and become less economical.

<Antioxidant>
The aromatic polycarbonate resin composition of the present invention preferably contains an antioxidant as desired. By containing the antioxidant, it is possible to suppress hue deterioration and deterioration of mechanical properties during heat retention.

  Examples of the antioxidant include hindered phenol-based antioxidants. Specific examples thereof include pentaerythritol tetrakis [3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate], octadecyl-3- (3,5-di-tert-butyl-4-hydroxyphenyl). ) Propionate, thiodiethylenebis [3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate], N, N′-hexane-1,6-diylbis [3- (3,5-di-) tert-butyl-4-hydroxyphenylpropionamide), 2,4-dimethyl-6- (1-methylpentadecyl) phenol, diethyl [[3,5-bis (1,1-dimethylethyl) -4-hydroxyphenyl ] Methyl] phosphoate, 3,3 ′, 3 ″, 5,5 ′, 5 ″ -hexa-tert-butyl-a, a ′, ''-(Mesitylene-2,4,6-triyl) tri-p-cresol, 4,6-bis (octylthiomethyl) -o-cresol, ethylenebis (oxyethylene) bis [3- (5-tert- Butyl-4-hydroxy-m-tolyl) propionate], hexamethylenebis [3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate], 1,3,5-tris (3,5- Di-tert-butyl-4-hydroxybenzyl) -1,3,5-triazine-2,4,6 (1H, 3H, 5H) -trione, 2,6-di-tert-butyl-4- (4 6-bis (octylthio) -1,3,5-triazin-2-ylamino) phenol and the like.

  Among them, pentaerythritol tetrakis [3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate], octadecyl-3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate preferable. Examples of such commercially available phenolic antioxidants include “Irganox 1010”, “Irganox 1076” manufactured by BASF, “Adekastab AO-50”, “Adekastab AO-60” manufactured by Adeka, and the like. It is done.

  In addition, 1 type may contain antioxidant and 2 or more types may contain it by arbitrary combinations and a ratio.

  When the aromatic polycarbonate resin composition of the present invention contains an antioxidant, its content is usually 0.0001 parts by mass or more, preferably 0.001 parts by mass or more, with respect to 100 parts by mass of the resin component. Preferably it is 0.01 mass part or more, and is 3 mass parts or less normally, Preferably it is 1 mass part or less, More preferably, it is 0.5 mass part or less, More preferably, it is 0.3 mass part or less. When the content of the antioxidant is less than the lower limit of the above range, the effect as an antioxidant may be insufficient, and when the content of the antioxidant exceeds the upper limit of the above range, There is a possibility that the effect reaches its peak and is not economical.

<Release agent>
The aromatic polycarbonate resin composition of the present invention may contain a release agent, and a full esterified product of an aliphatic alcohol and an aliphatic carboxylic acid is preferably used as the release agent.

  Examples of the aliphatic carboxylic acid constituting the fully esterified product include saturated or unsaturated aliphatic monocarboxylic acid, dicarboxylic acid, and tricarboxylic acid. Here, the aliphatic carboxylic acid also includes an alicyclic carboxylic acid. Among these, preferable aliphatic carboxylic acids are mono- or dicarboxylic acids having 6 to 36 carbon atoms, and aliphatic saturated monocarboxylic acids having 6 to 36 carbon atoms are more preferable. Specific examples of such aliphatic carboxylic acids include palmitic acid, stearic acid, valeric acid, caproic acid, capric acid, lauric acid, arachidic acid, behenic acid, lignoceric acid, serotic acid, melicic acid, tetratriacontanoic acid. , Montanic acid, glutaric acid, adipic acid, azelaic acid and the like.

  On the other hand, examples of the aliphatic alcohol component constituting the fully esterified product include saturated or unsaturated monohydric alcohols, saturated or unsaturated polyhydric alcohols, and the like. These alcohols may have a substituent such as a fluorine atom or an aryl group. Among these alcohols, monovalent or polyvalent saturated alcohols having 30 or less carbon atoms are preferable, and aliphatic saturated monohydric alcohols or polyhydric alcohols having 30 or less carbon atoms are more preferable. Here, the aliphatic alcohol also includes an alicyclic alcohol.

  Specific examples of these alcohols include octanol, decanol, dodecanol, stearyl alcohol, behenyl alcohol, ethylene glycol, diethylene glycol, glycerin, pentaerythritol, 2,2-dihydroxyperfluoropropanol, neopentylene glycol, ditrimethylolpropane, dipentaerythritol. Etc.

  In addition, the esterification rate of the full esterified product of the aliphatic alcohol and the aliphatic carboxylic acid is not necessarily 100%, and may be 80% or more. The esterification rate of the full esterified product according to the present invention is preferably 85% or more, particularly preferably 90% or more.

  The full esterified product of an aliphatic alcohol and an aliphatic carboxylic acid used in the present invention is, in particular, one or more of a full esterified product of a monoaliphatic alcohol and a monoaliphatic carboxylic acid, and a polyhydric aliphatic alcohol. It is preferable to contain 1 type, or 2 or more types of the full esterification product of a mono-aliphatic carboxylic acid, a full esterification product of a mono-aliphatic alcohol and a mono-aliphatic carboxylic acid, Combined use with a fully esterified product with an aliphatic carboxylic acid improves the mold release effect, suppresses gas generation during melt kneading, and reduces the mold deposit.

  As a full esterified product of monoaliphatic alcohol and monoaliphatic carboxylic acid, a full esterified product of stearyl alcohol and stearic acid (stearyl stearate), a full esterified product of behenyl alcohol and behenic acid (behenyl behenate) is preferable. As a full esterified product of a polyaliphatic alcohol and a monoaliphatic carboxylic acid, a full esterified product of glycerol serine and stearic acid (glycerol tristearate), a full esterified product of pentaerythritol and stearic acid (pentaerythritol tetra) Stearylate) is preferred, and pentaerythritol tetrastearate is particularly preferred.

  The full esterified product of an aliphatic alcohol and an aliphatic carboxylic acid may contain an aliphatic carboxylic acid and / or alcohol as an impurity, or may be a mixture of a plurality of compounds.

  When the aromatic polycarbonate resin composition of the present invention contains a release agent such as a full esterified product of an aliphatic alcohol and an aliphatic carboxylic acid, the content is usually 2 with respect to 100 parts by mass of the resin component. The amount is at most 1 part by mass, preferably at most 1 part by mass. When there is too much content of a mold release agent, there exist problems, such as a fall of hydrolysis resistance and mold contamination at the time of injection molding.

  When a full esterified product of a monoaliphatic alcohol and a monoaliphatic carboxylic acid and a full esterified product of a polyaliphatic alcohol and a monoaliphatic carboxylic acid are used in combination as a mold release agent, the use ratio (mass) Ratio) is a full esterified product of a monoaliphatic alcohol and a monoaliphatic carboxylic acid: a full esterified product of a polyaliphatic alcohol and a monoaliphatic carboxylic acid = 1: 1 to 10 in combination. It is preferable to obtain the above-mentioned effect with certainty.

<Ultraviolet absorber>
The aromatic polycarbonate resin composition of the present invention preferably contains a UV absorber as desired. By containing the ultraviolet absorber, the weather resistance of the aromatic polycarbonate resin composition of the present invention can be improved.

  Examples of the ultraviolet absorber include inorganic ultraviolet absorbers such as cerium oxide and zinc oxide; organics such as benzotriazole compounds, benzophenone compounds, salicylate compounds, cyanoacrylate compounds, triazine compounds, oxanilide compounds, malonic ester compounds, hindered amine compounds, etc. Examples include ultraviolet absorbers. In these, an organic ultraviolet absorber is preferable and a benzotriazole compound is more preferable. By selecting the organic ultraviolet absorber, the mechanical properties of the aromatic polycarbonate resin composition of the present invention are improved.

  Specific examples of the benzotriazole compound include, for example, 2- (2′-hydroxy-5′-methylphenyl) benzotriazole, 2- [2′-hydroxy-3 ′, 5′-bis (α, α-dimethylbenzyl). ) Phenyl] -benzotriazole, 2- (2′-hydroxy-3 ′, 5′-di-tert-butyl-phenyl) -benzotriazole, 2- (2′-hydroxy-3′-tert-butyl-5 ′) -Methylphenyl) -5-chlorobenzotriazole, 2- (2'-hydroxy-3 ', 5'-di-tert-butyl-phenyl) -5-chlorobenzotriazole), 2- (2'-hydroxy-3 ', 5'-di-tert-amyl) -benzotriazole, 2- (2'-hydroxy-5'-tert-octylphenyl) benzotriazole, 2 2'-methylenebis [4- (1,1,3,3-tetramethylbutyl) -6- (2N-benzotriazol-2-yl) phenol] and the like, among others 2- (2'-hydroxy- 5′-tert-octylphenyl) benzotriazole, 2,2′-methylenebis [4- (1,1,3,3-tetramethylbutyl) -6- (2N-benzotriazol-2-yl) phenol] are preferred. In particular, 2- (2′-hydroxy-5′-tert-octylphenyl) benzotriazole is preferred. Specific examples of such a benzotriazole compound include “Seesorb 701”, “Seesorb 705”, “Seesorb 703”, “Seesorb 702”, “Seesorb 704”, and “Seesorb 709” manufactured by Sipro Kasei Co., Ltd. “Biosorb 520”, “Biosorb 582”, “Biosorb 580”, “Biosorb 583” manufactured by Yakuhin Kagaku Co., Ltd. “Chemisorb 71”, “Chemisorb 72” manufactured by Chemipro Kasei Co., Ltd. “Siasorb UV5411” manufactured by Cytec Industries, Inc. “ “LA-32”, “LA-38”, “LA-36”, “LA-34”, “LA-31”, “Tinuvin P”, “Tinubin 234”, “Tinubin 326” manufactured by Ciba Specialty Chemicals, “Tinuvin 327”, “Tinuvin 328” and the like can be mentioned.

  Specific examples of the benzophenone compound include, for example, 2,4-dihydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-methoxybenzophenone-5-sulfonic acid, 2-hydroxy-4-n-octoxy Benzophenone, 2-hydroxy-n-dodecyloxybenzophenone, bis (5-benzoyl-4-hydroxy-2-methoxyphenyl) methane, 2,2'-dihydroxy-4-methoxybenzophenone, 2,2'-dihydroxy-4 4,4′-dimethoxybenzophenone and the like. Specific examples of such a benzophenone compound include “Seesorb 100”, “Seesorb 101”, “Seesorb 101S”, “Seesorb 102”, and “Seesorb 102” manufactured by Cypro Kasei Co., Ltd. Seesorb 103 ", joint medicine “Biosorb 100”, “Biosorb 110”, “Biosorb 130”, manufactured by Kemipro Kasei Co., Ltd. “Chemisorb 10”, “Chemisorb 11”, “Chemisorb 11S”, “Chemisorb 12”, “Chemsorb 13”, “Chemisorb 111” BASF “Ubinur 400”, BASF “Ubinur M-40”, BASF “Ubinur MS-40”, Cytec Industries “Thiasorb UV9”, “Thiasorb UV284”, “Thiasorb UV531”, “Thiasorb” UV24 "," ADEKA STAB 1413 "," ADEKA STAB LA-51 "manufactured by Adeka Corporation and the like.

  Specific examples of the salicylate compound include phenyl salicylate and 4-tert-butylphenyl salicylate. Specific examples of such a salicylate compound include, for example, “Seesorb 201” and “Seesorb” manufactured by Sipro Kasei Co., Ltd. 202 ”,“ Chemsorb 21 ”,“ Chemsorb 22 ”manufactured by Chemipro Kasei Co., Ltd.

  Specific examples of the cyanoacrylate compound include, for example, ethyl-2-cyano-3,3-diphenyl acrylate, 2-ethylhexyl-2-cyano-3,3-diphenyl acrylate, and the like. Specifically, for example, “Seasorb 501” manufactured by Sipro Kasei Co., Ltd., “Biosorb 910” manufactured by Kyodo Pharmaceutical Co., Ltd., “Ubisolator 300” manufactured by Daiichi Kasei Co., Ltd., “Ubinur N-35” manufactured by BASF, 539 "and the like.

  Specific examples of the oxanilide compound include, for example, 2-ethoxy-2′-ethyl oxalinic acid bis-arinide and the like. Specific examples of such an oxalinide compound include “Sanduboa” manufactured by Clariant Corporation. VSU "etc. are mentioned.

  As the malonic acid ester compound, 2- (alkylidene) malonic acid esters are preferable, and 2- (1-arylalkylidene) malonic acid esters are more preferable. Specific examples of such a malonic ester compound include “PR-25” manufactured by Clariant Japan, “B-CAP” manufactured by Ciba Specialty Chemicals, and the like.

When the aromatic polycarbonate resin composition of the present invention contains an ultraviolet absorber, the content is usually 0.001 part by mass or more, preferably 0.01 part by mass or more, with respect to 100 parts by mass of the resin component. Preferably it is 0.1 mass part or more, and is 3 mass parts or less normally, Preferably it is 1 mass part or less, More preferably, it is 0.5 mass part or less, More preferably, it is 0.4 mass part or less. If the content of the UV absorber is below the lower limit of the above range, the effect of improving the weather resistance may be insufficient, and if the content of the UV absorber exceeds the upper limit of the above range, the mold Debogit etc. may occur and cause mold contamination.
In addition, 1 type may contain the ultraviolet absorber and 2 or more types may contain it by arbitrary combinations and a ratio.

<Dye and pigment>
The aromatic polycarbonate resin composition of the present invention may contain a dye / pigment if desired. By containing the dye / pigment, the concealability and weather resistance of the aromatic polycarbonate resin composition of the present invention can be improved, and the design of the molded product obtained by molding the aromatic polycarbonate resin composition of the present invention is improved. Can be made.

  Examples of the dye / pigment include inorganic pigments, organic pigments, and organic dyes.

  Examples of inorganic pigments include sulfide pigments such as carbon black, cadmium red, and cadmium yellow; silicate pigments such as ultramarine blue; titanium oxide, zinc white, petal, chromium oxide, iron black, titanium yellow, zinc- Oxide pigments such as iron brown, titanium cobalt green, cobalt green, cobalt blue, copper-chromium black and copper-iron black; chromic pigments such as chrome lead and molybdate orange; Examples include Russian pigments.

  Examples of organic pigments and organic dyes include phthalocyanine dyes such as copper phthalocyanine blue and copper phthalocyanine green; azo dyes such as nickel azo yellow; thioindigo, perinone, perylene, quinacridone, dioxazine, iso Examples thereof include condensed polycyclic dyes such as indolinone and quinophthalone; anthraquinone, heterocyclic and methyl dyes.

  Of these, titanium oxide, carbon black, cyanine-based, quinoline-based, anthraquinone-based, and phthalocyanine-based compounds are preferable from the viewpoint of thermal stability.

In addition, 1 type may contain the dye / pigment, and 2 or more types may contain it by arbitrary combinations and a ratio.
In addition, dyes and pigments that are masterbatched with (A) an aromatic polycarbonate resin or other thermoplastic resin are also used for the purpose of improving the handling property during extrusion and improving the dispersibility in the resin composition. May be.

  When the aromatic polycarbonate resin composition of the present invention contains a dye / pigment, the content may be appropriately selected according to the required design properties, but is usually 0.001 mass per 100 mass parts of the resin component. Part or more, preferably 0.01 part by weight or more, more preferably 0.1 part by weight or more, and usually 3 parts by weight or less, preferably 2 parts by weight or less, more preferably 1 part by weight or less, more preferably 0.5 parts by mass or less. When the content of the dye / pigment is less than or equal to the lower limit of the above range, the coloring effect may not be sufficiently obtained, and when the content of the dye / pigment exceeds the upper limit of the above range, a mold deposit or the like occurs. , May cause mold contamination.

<Antistatic agent>
The aromatic polycarbonate resin composition of the present invention may contain an antistatic agent as desired. The antistatic agent is not particularly limited, but is preferably a sulfonic acid phosphonium salt represented by the following general formula (III).

(In the general formula (III), R ¹¹ is an alkyl group or aryl group having 1 to 40 carbon atoms and may have a substituent, and R ^{12 to} R ¹⁵ are each independently a hydrogen atom, carbon (It is an alkyl group or an aryl group of formulas 1 to 10, and these may be the same or different.)

R ¹¹ in the general formula (III) is an alkyl group having 1 to 40 carbon atoms or an aryl group, and an aryl group is preferable from the viewpoint of transparency, heat resistance, and compatibility with a polycarbonate resin. A group derived from an alkylbenzene or alkylnaphthalene ring substituted with an alkyl group of 1 to 34, preferably 5 to 20, particularly 10 to 15 is preferable. Further, R ^{12 to} R ¹⁵ in the general formula (III) are each independently a hydrogen atom, an alkyl group having 1 to 10 carbon atoms or an aryl group, preferably an alkyl having 2 to 8 carbon atoms, More preferably, it is a 3-6 alkyl group, and especially a butyl group is preferable.

Specific examples of such phosphonium sulfonates include tetrabutylphosphonium dodecylsulfonate, tetrabutylphosphonium dodecylbenzenesulfonate, tributyloctylphosphonium dodecylbenzenesulfonate, tetraoctylphosphonium dodecylbenzenesulfonate, tetraethylphosphonium octadecylbenzenesulfonate. , Tributylmethylphosphonium dibutylbenzenesulfonate, triphenylphosphonium dibutylnaphthylsulfonate, trioctylmethylphosphonium diisopropylnaphthylsulfonate, and the like. Of these, tetrabutylphosphonium dodecylbenzenesulfonate is preferred because it is compatible with polycarbonate and easily available.
These may be used alone or in combination of two or more.

  When the aromatic polycarbonate resin composition of the present invention contains an antistatic agent, the content thereof is preferably 0.1 to 5.0 parts by mass, more preferably 100 parts by mass of the resin component. It is 0.2-3.0 mass parts, More preferably, it is 0.3-2.0 mass parts, Most preferably, it is 0.5-1.8 mass parts. If the content of the antistatic agent is less than 0.1 parts by mass, the antistatic effect cannot be obtained, and if it exceeds 5.0 parts by mass, the transparency and mechanical strength are reduced, and the surface of the molded product has silver and peeling. This is likely to cause poor appearance.

<Other resin components>
Unless the objective of this invention is impaired, the aromatic polycarbonate resin composition of this invention is (A) aromatic polycarbonate resin, (B) aromatic polyester resin and / or alicyclic polyester resin, and (C) polyethylene. Other resin components other than the resin may be contained. As other resin components that can be blended, for example, polystyrene resin, high impact polystyrene resin, hydrogenated polystyrene resin, polyacryl styrene resin, ABS resin, AS resin, AES resin, ASA resin, SMA resin, polyalkyl methacrylate resin, Polymethacryl methacrylate resin, polyphenyl ether resin, polycarbonate resin other than component (A), amorphous polyalkylene terephthalate resin, polyester resin other than component (B), amorphous polyamide resin, poly-4-methylpentene-1 , Cyclic polyolefin resin, amorphous polyarylate resin, polyether sulfone, etc., preferably polystyrene resin, ABS resin, AS resin, AES resin, ASA resin, polyphenylene ether resin, polymethacryl methacrylate. Over preparative resin, and polyester resin other than component (B).

  These may be used singly or as a mixture of two or more, (A) aromatic polycarbonate resin, (B) aromatic polyester resin and / or alicyclic polyester resin, and In order to obtain the effect of the present invention by using (C) polyethylene resin, these other resin components are (A) aromatic polycarbonate resin and (B) aromatic polyester resin and / or alicyclic polyester resin. And (C) 40 parts by mass or less with respect to 100 parts by mass in total of the polyethylene resin.

<Other additives>
The aromatic polycarbonate resin composition of the present invention may contain other additives in addition to those described above, if necessary, as long as desired physical properties are not significantly impaired. Examples of other additives include various resin additives such as inorganic fillers, anti-dripping agents, anti-fogging agents, anti-blocking agents, fluidity improvers, sliding property modifiers, plasticizers, dispersants, and antibacterial agents. Etc. One of these resin additives may be contained, or two or more thereof may be contained in any combination and ratio. Further, a thermoplastic elastomer having an effect of improving the appearance of the molded product may be contained as long as desired physical properties are not significantly impaired.
The thermoplastic elastomer preferably has a core-shell structure. Specific examples include MBS resin (M711 manufactured by Kaneka Corporation, EXL2603 and EXL2633 manufactured by Rohm and Haas), silicone acrylic composite rubber (Mitsubishi Rayon). (S-2100, S-2030, S-2001) manufactured by Co., Ltd.

[Method for producing aromatic polycarbonate resin composition]
There is no restriction | limiting in the manufacturing method of the aromatic polycarbonate resin composition of this invention, The manufacturing method of a well-known aromatic polycarbonate resin composition can be employ | adopted widely.

  Specific examples thereof include (A) aromatic polycarbonate resin, (B) aromatic polyester resin and / or alicyclic polyester resin, and (C) polyethylene resin, preferably (C-1) according to the present invention. ) Low-density polyethylene and (C-2) polyethylene-based ionomer melt-mixed in advance (C) polyethylene-based resin, and other ingredients blended as needed, such as tumbler, Henschel mixer, super mixer, etc. Examples thereof include a method of pre-mixing using a mixer and then melt-kneading with a mixer such as a Banbury mixer, roll, brabender, single-screw kneading extruder, twin-screw kneading extruder, or kneader.

  Also, for example, without mixing each component in advance, or only a part of the components are mixed in advance, and fed to an extruder using a feeder, and melt-kneaded, the aromatic polycarbonate resin composition of the present invention It can also be manufactured.

Also, for example, by mixing a part of the components in advance and supplying the resulting mixture to an extruder and melt-kneading it as a master batch, this master batch is again mixed with the remaining components and melt-kneaded. The aromatic polycarbonate resin composition of the present invention can also be produced.
In addition, for example, when mixing a component that is difficult to disperse, the component that is difficult to disperse is dissolved or dispersed in a solvent such as water or an organic solvent in advance, and kneaded with the solution or the dispersion. It can also improve sex.

  Examples of a method for melt-kneading after mixing each component in advance by the above method include a method using a Banbury mixer, roll, Brabender, single-screw kneading extruder, twin-screw kneading extruder, kneader and the like.

[Aromatic polycarbonate resin molded product]
The aromatic polycarbonate resin composition of the present invention is usually molded into an arbitrary shape and used as an aromatic polycarbonate resin molded article. There are no restrictions on the shape, pattern, color, size, etc. of the molded product, and it may be set arbitrarily according to the application of the molded product.

  The manufacturing method of the aromatic polycarbonate resin molded article of the present invention is not particularly limited, and a molding method generally employed for the aromatic polycarbonate resin composition can be arbitrarily adopted. For example, injection molding method, ultra-high speed injection molding method, injection compression molding method, two-color molding method, hollow molding method such as gas assist, molding method using heat insulating mold, rapid heating mold were used. Molding method, foam molding (including supercritical fluid), insert molding, IMC (in-mold coating molding) molding method, extrusion molding method, sheet molding method, thermoforming method, rotational molding method, laminate molding method, press molding method, etc. Is mentioned. A molding method using a hot runner method can also be used.

  Examples of application of the molded article of the present invention thus manufactured include electrical and electronic equipment, OA equipment, information terminal equipment, machine parts, home appliances, vehicle parts, building members, various containers, leisure goods and miscellaneous goods. And parts such as lighting equipment. Among these, the molded article of the present invention is particularly suitable for interior and exterior parts of automobiles, electrical and electronic equipment, OA, because of its excellent mechanical properties such as chemical resistance, heat stability, impact resistance, and good molded article appearance. It is suitable for use in parts such as equipment, information terminal equipment, home appliances, and lighting equipment, and is particularly suitable for use in interior and exterior parts of automobiles and casings of electrical and electronic equipment.

  Examples of the electric and electronic devices include display devices such as personal computers, game machines, televisions, car navigation systems, and electronic paper, printers, copiers, scanners, fax machines, electronic notebooks and PDAs, electronic desk calculators, electronic dictionaries, Examples include a camera, a video camera, a mobile phone, a battery pack, a recording medium drive and reading device, a mouse, a numeric keypad, a CD player, an MD player, and a portable radio / audio player. Especially, it can use suitably for the designable parts of housing | casings, such as a television, a personal computer, a car navigation system, and electronic paper.

  Car exterior parts include outer handles, door mirror sticks, fenders, garnishes, bumpers, roof rails, and wiper arms. Car interior parts include inner handles, center consoles, instrument panels, assist grips, seat belt stoppers, and glazing. Window frame.

  Hereinafter, the present invention will be described more specifically with reference to examples. However, the present invention is not limited to the following examples, and can be arbitrarily modified and implemented without departing from the gist of the present invention. In the following description, “parts” means “parts by mass” based on mass standards unless otherwise specified.

  Measurement / evaluation methods and materials used in the following Examples and Comparative Examples are as follows.

[Measurement / Evaluation]
<Appearance of molded product>
The appearance of the molded product was evaluated by visual evaluation of the appearance of the ISO multipurpose test piece and the fracture surface of the ISO multipurpose test piece after the tensile test. The ISO multi-purpose test piece (4 mm thick) was prepared by drying pellets of each resin composition at 120 ° C. for 5 hours, and then using SG75 Cycap M-2 manufactured by Sumitomo Heavy Industries, Ltd. with a clamping force of 75T. It was produced by injection molding under conditions of a temperature of 270 ° C., a mold temperature of 80 ° C., and a molding cycle of 45 seconds. About this ISO multipurpose test piece, the presence or absence of pearl luster was visually evaluated. In addition, ten ISO multipurpose test pieces were used, and a tensile test was performed under the condition of a tensile speed of 50 mm / min in accordance with ISO527-1 and ISO527-2, and the state of surface peeling of the fracture surface after the test was visually evaluated. .
The appearance of the molded product was evaluated according to the following criteria.
A: There is no pearly gloss and there is no surface peeling of the fracture surface of the tensile test piece. ○: There is no pearly glossiness, and there is one or less surface peeling of the tensile test piece fractured surface. No more than 4 peelings on the surface of the fracture surface ×: There is a pearly luster, and 5 or more surface peelings on the fracture surface of the tensile test piece XX: The pearly glossiness is severe, causing peeling on the surface of the test piece before the tensile test ing

<Fluidity (Q value)>
After drying the pellets of each resin composition at 120 ° C. for 4 hours or more, JIS
K7210 Using a high-load flow tester according to the method described in Appendix C, the amount of effluent Q per unit time of the composition under conditions of 280 ° C. and a load of 160 kgf (unit: × 10 ⁻² cm ³ / sec) ) Was measured to evaluate the fluidity. An orifice having a diameter of 1 mm and a length of 10 mm was used. It shows that it is excellent in fluidity | liquidity, so that Q value is high.

<Heat resistance (DTUL)>
After drying the pellets of each resin composition at 120 ° C. for 5 hours, a cylinder temperature of 270 ° C., a mold temperature of 80 ° C. using SG75 Cycap M-2 manufactured by Sumitomo Heavy Industries, Ltd. and a clamping force of 75T, Injection molding was performed under the condition of a molding cycle of 45 seconds to form an ISO multipurpose test piece (4 mm). Using this ISO multipurpose test piece, the deflection temperature under load was measured under the condition of a load of 1.80 MPa in accordance with ISO75-1 and ISO75-2. In the table, “DTUL” is used.

<Impact strength>
A notched test piece (normal test piece) was prepared from the injection-molded piece (thickness: 4.0 mm) described in the section <Heat resistance stability (DTUL)> in accordance with ISO 179, and in an environment of 23 ° C., Notched Charpy impact strength (unit: kJ / m ² ) was measured.

<Chemical resistance>
Evaluation of chemical resistance uses an ISO multi-purpose test piece (4 mm thick), with a load that gives a deformation of 0.38% (deflection of 1.6 mm) by the three-point bending method, and the convex surface of the central maximum deformation part Regular gasoline was applied. After being left for 72 hours in an environment of 23 ° C. and 50% RH, the load was removed.
The test piece after removing the load was subjected to a tensile test under the condition of a tensile speed of 50 mm / min in accordance with ISO527-1 and ISO527-2, and the tensile strength and crack resistance were evaluated according to the following criteria.
(Tensile strength)
○: Tensile strength retention (strength ratio after test / before test) is 80% or more ×: Tensile strength retention is 50% or less (crack resistance)
○: No cracks occurred △: Small cracks occurred ×: Large cracks occurred ××: Test specimen broke before testing

[Materials used]
<(A) Aromatic polycarbonate resin>
Bisphenol A-type aromatic polycarbonate produced by interfacial polymerization ("Iupilon (registered trademark) S-3000F" manufactured by Mitsubishi Engineering Plastics Co., Ltd., viscosity average molecular weight 25,000)

<(B) Aromatic polyester resin and / or alicyclic polyester resin>
PBT: polybutylene terephthalate ("DURANEX 2002" manufactured by Wintech Polymer Co., Ltd.), intrinsic viscosity 1.02 dL / g, terminal carboxyl group concentration 65 eq / t
PCC: Poly (1,4-cyclohexanedimethanol-1,4-cyclohexanedicarboxylate) (“Primalloy CP201” manufactured by Mitsubishi Chemical Corporation)
PET: Polyethylene terephthalate ("Novapex GG500D" manufactured by Mitsubishi Chemical Corporation)

<(C) Polyethylene resin>
LLDPE + ionomer: “Maricon J1000MB” manufactured by Osaka Gas Chemical Co., Ltd. (melt-mixed 90% by mass of low density polyethylene and 10% by mass of polyethylene ionomer whose metal ion is zinc)
LLDPE: Low density polyethylene “Kernel KS-240T” manufactured by Nippon Polyethylene Co., Ltd. (density 0.88 g / cm ³ )
Ionomer: manufactured by Mitsui DuPont Chemicals Co., Ltd. Polyethylene ionomer "Himiran 1706" whose metal ion is zinc (density 0.96 g / cm ³ )

<(D) Reinforcement material>
Talc: “High Contalc R-10” manufactured by Matsumura Sangyo Co., Ltd. (average particle size 4 μm)

<(E) Thermal stabilizer>
Phosphorus heat stabilizer “PEP36” manufactured by ADEKA (bis (2,6-di-tert-butyl-4-methylphenyl) pentaerythritol diphosphite)

<Other ingredients>
HDPE: High Density Polyethylene “HJ560” manufactured by Nippon Polyethylene Co., Ltd. (density 0.96 g / cm ³ )
ABS: Acrylonitrile-butadiene-styrene copolymer “Santac AT-08” manufactured by Nippon A & L Co. (butadiene rubber content: 18% by mass)

[Examples 1-11, Comparative Examples 1-15]
<Preparation of resin composition>
Each of the above components were blended in the mass ratios shown in Table 1 and Table 2, mixed for 20 minutes with a tumbler, and then supplied to Nippon Steel Works (TEX30HSST) equipped with 1 vent, with a screw speed of 200 rpm, The molten resin kneaded under the conditions of a discharge rate of 20 kg / hour and a barrel temperature of 270 ° C., extruded into a strand shape, was rapidly cooled in a water tank, and pelletized using a pelletizer to obtain pellets of an aromatic polycarbonate resin composition. The above evaluation was performed using the obtained pellets, and the results are shown in Tables 1 and 2.

[Evaluation results]

  Tables 1 and 2 show the following.

  In Examples 1 to 11 in which (A) an aromatic polycarbonate resin and (B) an aromatic polyester resin and / or an alicyclic polyester resin and (C) a polyethylene resin are blended within the scope of the present invention, all are molded articles. Excellent appearance, heat stability, chemical resistance, impact resistance, and moldability. Comparing Example 2 and Example 6, Example 2 using a mixture obtained by previously melt-mixing the component (C-1) and the component (C-2) is different from the other without melt-mixing them. It can be seen that the appearance of the molded article is excellent compared with Example 6 mixed with the resin component, and the impact resistance is also good. In addition, when Examples 2 and 4 using PBT or PCC as the component (B) are compared with Example 5 using PET, PBT or PCC is molded as the component (B) rather than PET. It is preferable in terms of product appearance, PCC is preferable in terms of moldability and heat resistance, PBT is preferable in terms of appearance of the molded product, and PET is preferable in terms of impact resistance. Moreover, from Examples 8-11 which mix | blended talc, it turns out that a molded article external appearance improves more by the mixing | blending of talc.

On the other hand, Comparative Examples 1 and 2 containing only (C-1) low-density polyethylene in place of (C) component, and (C-2) Comparative Examples containing only polyethylene-based ionomer, instead of (B) component In 3 and 4, the appearance of the molded product is inferior. Moreover, even if it contains (C) component, the comparative example 5 and 6 which does not contain (B) component are inferior in a molded article external appearance.
In Comparative Example 8 in which only (C-2) polyethylene-based ionomer was added as component (C) even when component (B) was included, impact strength was low, and (C-2) polyethylene-based ionomer and high-density polyethylene were used. In Comparative Example 9 used in combination, the appearance of the molded product is greatly inferior.

  Even if the components (A) to (C) are contained, the appearance of the molded product is inferior in Comparative Example 10 in which the content of the (B) component is small, and the heat resistance is lowered in Comparative Example 11 in which the content of the (B) component is too large. In Comparative Example 12, in which the chemical resistance is not obtained, and the content of the component (C) is small, the chemical resistance is not obtained, and in the Comparative Example 13 in which the content of the component (C) is too large, the appearance of the molded product is remarkably increased. It will be inferior.

  Further, Comparative Example 14 containing only the component (A) is inferior in chemical resistance, and in Comparative Example 15 in which an ABS resin is blended in place of the component (B), the appearance of the molded product is inferior.

[ 4 ] A molded product obtained by molding the aromatic polycarbonate resin composition according to any one of [1] to [ 3 ].

[(C) Polyethylene resin]
The (C) polyethylene resin (hereinafter sometimes referred to as “(C) component”) used in the present invention may be referred to as (C-1) low density polyethylene (hereinafter referred to as “(C-1) component”). .) and (C-2) polyethylene ionomer (hereinafter sometimes referred to as "component (C-2)".) and de Ru configured.

Its specific examples, according to the present invention and (A) an aromatic polycarbonate resin, (B) a aromatic polyester resin and / or cycloaliphatic polyester resin, (C) a polyethylene resin, a parallel Beauty, optionally Other ingredients to be blended in advance using, for example, various mixers such as a tumbler, Henschel mixer, super mixer, etc. The method of melt-kneading with mixers, such as a kneader, is mentioned.

[Measurement / Evaluation]
<Appearance of molded product>
The appearance of the molded product was evaluated by visual evaluation of the appearance of the ISO multipurpose test piece and the fracture surface of the ISO multipurpose test piece after the tensile test. The ISO multi-purpose test piece (4 mm thick) was prepared by drying pellets of each resin composition at 120 ° C. for 5 hours, and then using SG75 Cycap M-2 manufactured by Sumitomo Heavy Industries, Ltd. with a clamping force of 75T. It was produced by injection molding under conditions of a temperature of 270 ° C., a mold temperature of 80 ° C., and a molding cycle of 45 seconds. About this ISO multipurpose test piece, the presence or absence of pearl luster was visually evaluated. In addition, ten ISO multipurpose test pieces were used, and a tensile test was performed under the condition of a tensile speed of 50 mm / min in accordance with ISO527-1 and ISO527-2, and the state of surface peeling of the fracture surface after the test was visually evaluated. .
The appearance of the molded product was evaluated according to the following criteria .
○ : There is no pearly luster and the surface peeling of the tensile test piece fracture surface is 1 or less. △: There is a slight pearly glossiness, and the surface peeling of the tensile test piece fractured surface is 4 or less. 5 or more peelings on the surface of the test piece fracture surface xx: The pearl luster is severe, and peeling occurs on the surface of the test piece before the tensile test.

<(B) Aromatic polyester resin and / or alicyclic polyester resin>
PBT: Polybutylene terephthalate ("DURANEX 2002" manufactured by Wintech Polymer Co., Ltd.), intrinsic viscosity 1.02 dL / g, terminal carboxyl group concentration 65 eq / t

<(C) Polyethylene resin >
L LDPE: Low density polyethylene “Kernel KS-240T” manufactured by Nippon Polyethylene Co., Ltd. (density 0.88 g / cm ³ )
Ionomer: manufactured by Mitsui DuPont Chemicals Co., Ltd. Polyethylene ionomer "Himiran 1706" whose metal ion is zinc (density 0.96 g / cm ³ )

<Other ingredients>
HDPE: High Density Polyethylene “HJ560” manufactured by Nippon Polyethylene Co., Ltd. (density 0.96 g / cm ³ )

[Examples 1 and 2 and Comparative Examples 1 to 8 ]
<Preparation of resin composition>
Each of the above components were blended in the mass ratios shown in Table 1 and Table 2, mixed for 20 minutes with a tumbler, and then supplied to Nippon Steel Works (TEX30HSST) equipped with 1 vent, with a screw speed of 200 rpm, The molten resin kneaded under the conditions of a discharge rate of 20 kg / hour and a barrel temperature of 270 ° C., extruded into a strand shape, was rapidly cooled in a water tank, and pelletized using a pelletizer to obtain pellets of an aromatic polycarbonate resin composition. The above evaluation was performed using the obtained pellets, and the results are shown in Tables 1 and 2.

[Evaluation results]

In Examples 1 and 2 , in which (A) an aromatic polycarbonate resin and (B) an aromatic polyester resin and / or an alicyclic polyester resin and (C) a polyethylene resin are blended within the scope of the present invention, both are molded articles. Excellent appearance, heat stability, chemical resistance, impact resistance, and moldability .

On the other hand, Comparative Examples 1 and 2 containing only (C-1) low-density polyethylene in place of (C) component, and (C-2) Comparative Examples containing only polyethylene-based ionomer, instead of (B) component In 3 and 4, the appearance of the molded product is inferior .
Even if ( B) component is included, the impact strength is low in Comparative Example 6 in which only (C-2) polyethylene ionomer is added as (C) component, and (C-2) polyethylene ionomer and high-density polyethylene are used. In Comparative Example 7 used in combination, the appearance of the molded product is greatly inferior.

Moreover, that Do and poor in only Comparative Example 8 In the chemical resistance of the component (A).

Claims (5)

  As a resin component, (A) aromatic polycarbonate resin 55-85 mass%, (B) aromatic polyester resin and / or alicyclic polyester resin 10-30 mass%, (C) polyethylene-type resin 5-15 mass% A resin composition containing a total of 100% by mass, wherein (C) polyethylene resin is (C-1) low density polyethylene 50 to 90% by mass and (C-2) polyethylene ionomer 10 to 50% by mass. An aromatic polycarbonate resin composition characterized by comprising.   The aromatic polycarbonate resin composition according to claim 1, comprising 3 to 20 parts by mass of (D) a reinforcing material with respect to 100 parts by mass of the resin component.   3. The aromatic polyester resin according to claim 1 or 2, wherein the aromatic polyester resin is polybutylene terephthalate and / or polyethylene terephthalate, and the alicyclic polyester resin is poly (1,4-cyclohexanedimethanol-1,4-cyclohexanedicarboxylate). The aromatic polycarbonate resin composition characterized by the above-mentioned.   4. The polyethylene resin according to claim 1, wherein (C-1) the low density polyethylene and (C-2) polyethylene ionomer are melted before mixing with other resin components. An aromatic polycarbonate resin composition characterized by being mixed.   A molded article obtained by molding the aromatic polycarbonate resin composition according to any one of claims 1 to 4.