JP3973303B2 - Thermoplastic resin composition - Google Patents

Description

【００２８】
この残存触媒活性指数は、２％以下であり、好ましくは１％以下、更に好ましくは０．５％以下、最も好ましくは０．２％以下である。残存触媒活性指数がこの範囲を越えると芳香族ポリカーボネート樹脂が経時変化して好ましくない。
【００２９】
芳香族ポリカーボネート樹脂の分子量は、粘度平均分子量（Ｍ）で１２，０００〜３０，０００が好ましく、１４，０００〜２７，０００がより好ましく、１５，０００〜２５，０００が特に好ましい。かかる粘度平均分子量を有する芳香族ポリカーボネート樹脂は、組成物として十分な強度が得られ、また、成形時の溶融流動性も良好であり成形歪みが発生せず好ましい。本発明でいう粘度平均分子量は塩化メチレン１００ｍＬにポリカーボネート樹脂０.７ｇを２０℃で溶解した溶液から求めた比粘度（ηsp）を次式に挿入して求めたものである。
ηsp／ｃ＝［η］＋０.４５×［η］²ｃ（但し［η］は極限粘度）
［η］＝１.２３×１０^-4Ｍ^0.83
ｃ＝０.７
【００３０】
本発明で用いる（Ｂ）芳香族ポリエステル樹脂とは、芳香族ジカルボン酸又はその反応性誘動体と、ジオール、又はそのエステル誘導体とを主成分とする縮合反応により得られる重合体ないしは共重合体である。
【００３１】
ここでいう芳香族ジカルボン酸としてはテレフタル酸、イソフタル酸、オルトフタル酸、１，５−ナフタレンジカルボン酸、２，６−ナフタレンジカルボン酸、４，４’−ビフェニルジカルボン酸、４，４’−ビフェニルエーテルジカルボン酸、４，４’−ビフェニルメタンジカルボン酸、４，４’−ビフェニルスルホンジカルボン酸、４，４’−ビフェニルイソプロピリデンジカルボン酸、１，２−ビス（フェノキシ）エタン−４，４’−ジカルボン酸、２，５−アントラセンジカルボン酸、２，６−アントラセンジカルボン酸、４，４’−ｐ−ターフェニレンジカルボン酸、２，５−ピリジンジカルボン酸等の芳香族系ジカルボン酸が好適に用いられ、特にテレフタル酸、２，６−ナフタレンジカルボン酸が好ましく使用できる。
【００３２】
芳香族ジカルボン酸は二種以上を混合して使用してもよい。なお少量であれば、該ジカルボン酸と共にアジピン酸、アゼライン酸、セバシン酸、ドデカンジ酸等の脂肪族ジカルボン酸、シクロヘキサンジカルボン酸等の脂環族ジカルボン酸等を一種以上混合使用することも可能である。
【００３３】
また本発明の芳香族ポリエステルの成分であるジオールとしては、エチレングリコール、プロピレングリコール、ブチレングリコール、ヘキシレングリコール、ネオペンチルグリコール、ペンタメチレングリコール、ヘキサメチレングリコール、デカメチレングリコール、２−メチル−１，３−プロパンジオール、ジエチレングリコール、トリエチレングリコール等の脂肪族ジオール、１，４−シクロヘキサンジメタノール等の脂環族ジオール等、２，２−ビス（β−ヒドロキシエトキシフェニル）プロパン等の芳香環を含有するジオール等及びそれらの混合物等が挙げられる。更に少量であれば、分子量４００〜６０００の長鎖ジオール、すなわちポリエチレングリコール、ポリ−１，３−プロピレングリコール、ポリテトラメチレングリコール等を１種以上共重合してもよい。
【００３４】
また本発明の芳香族ポリエステルは少量の分岐剤を導入することにより分岐させることができる。分岐剤の種類に制限はないがトリメシン酸、トリメリチン酸、トリメチロールエタン、トリメチロールプロパン、ペンタエリスリトール等が挙げられる。
【００３５】
具体的な芳香族ポリエステル樹脂としては、ポリエチレンテレフタレート（ＰＥＴ）、ポリプロピレンテレフタレート、ポリブチレンテレフタレート（ＰＢＴ）、ポリへキシレンテレフタレート、ポリエチレンナフタレート（ＰＥＮ）、ポリブチレンナフタレート（ＰＢＮ）、ポリエチレン−１，２−ビス（フェノキシ）エタン−４，４’−ジカルボキシレート、等の他、ポリエチレンイソフタレート／テレフタレート、ポリブチレンテレフタレート／イソフタレート、等のような共重合ポリエステルおよびこれらの混合物が好ましく使用できる。これらの中でもジオール成分として、エチレングリコールを使用したポリエチレンテレフタレート、ポリエチレンナフタレートが熱的性質、機械的性質等のバランスがとれ好ましく、更に芳香族ポリエステル樹脂１００重量％中ポリエチレンテレフタレート、ポリエチレンナフタレートが５０重量％以上のものが好ましく、特にポリエチレンテレフタレートが５０重量％以上のものが好ましい。また、ジオール成分として、ブチレングリコールを使用したポリブチレンテレフタレート、ポリブチレンナフタレートも成形性、機械的性質等のバランスがとれ好ましく、更に重量比でポリブチレンテレフタレート／ポリエチレンテレフタレートが２〜１０の範囲が好ましい。
【００３６】
また得られた芳香族ポリエステル樹脂の末端基構造は特に限定されるものではなく、末端基における水酸基とカルボキシル基の割合がほぼ同量の場合以外に、一方の割合が多い場合であってもよい。またかかる末端基に対して反応性を有する化合物を反応させる等により、それらの末端基が封止されているものであってもよい。
【００３７】
かかる芳香族ポリエステル樹脂の製造方法については、常法に従い、チタン、ゲルマニウム、アンチモン等を含有する重縮合触媒の存在下に、加熱しながらジカルボン酸成分と前記ジオール成分とを重合させ、副生する水又は低級アルコールを系外に排出することにより行われる。例えば、ゲルマニウム系重合触媒としては、ゲルマニウムの酸化物、水酸化物、ハロゲン化物、アルコラート、フェノラート等が例示でき、更に具体的には、酸化ゲルマニウム、水酸化ゲルマニウム、四塩化ゲルマニウム、テトラメトキシゲルマニウム等が例示できる。
【００３８】
また本発明では、従来公知の重縮合の前段回であるエステル交換反応において使用される、マンガン、亜鉛、カルシウム、マグネシウム等の化合物を併せて使用でき、及びエステル交換反応終了後にリン酸または亜リン酸の化合物等により、かかる触媒を失活させて重縮合することも可能である。
【００３９】
また芳香族ポリエステル樹脂の分子量については特に制限されないが、ｏ−クロロフェノールを溶媒としてで２５℃で測定した固有粘度が０．４〜１．２、好ましくは０．６５〜１．１５である。
【００４０】
本発明の熱可塑性樹脂組成物における（Ａ）芳香族ポリカーボネート樹脂と（Ｂ）芳香族ポリエステル樹脂との配合割合は、（Ａ）芳香族ポリカーボネート樹脂５〜９５重量％、好ましくは１０〜９０重量％、（Ｂ）芳香族ポリエステル樹脂９５〜５重量％、好ましくは９０〜１０重量％である。（Ａ）芳香族ポリカーボネート樹脂の配合割合が５重量％未満、即ち（Ｂ）芳香族ポリエステル樹脂の配合割合が９５重量％よりも多くなると耐衝撃性が不十分となり、（Ａ）芳香族ポリカーボネート樹脂の配合割合が９５重量％よりも多くなる、即ち（Ｂ）芳香族ポリエステル樹脂の配合割合が５重量％未満になると耐薬品性が不十分となり好ましくない。
【００４１】
また、本発明の熱可塑性樹脂組成物には耐衝撃性を更に向上させる目的で（Ｃ）ゴム状弾性体を添加することが可能である。本発明に使用可能な（Ｃ）ゴム状弾性体とは、ガラス転移温度が１０℃以下のゴム成分に、芳香族ビニル、シアン化ビニル、アクリル酸エステル、メタクリル酸エステル、及びこれらと共重合可能なビニル化合物から選択されたモノマーの１種または２種以上が共重合されたグラフト共重合体を挙げることができる。一方架橋構造を有しない熱可塑性エラストマーとして知られている各種、例えばポリウレタンエラストマー、ポリエステルエラストマー、スチレン−エチレンプロピレン−スチレンエラストマー、ポリエーテルアミドエラストマー等を使用することも可能である。
【００４２】
ここでいうガラス転移温度が１０℃以下のゴム成分としては、ブタジエンゴム、ブタジエン−アクリル複合ゴム、アクリルゴム、アクリル-シリコン複合ゴム、イソプレンゴム、スチレン−ブタジエンゴム、クロロプレンゴム、エチレン−プロピレンゴム、ニトリルゴム、エチレン−アクリルゴム、シリコンゴム、エピクロロヒドリンゴム、フッ素ゴム及びこれらの不飽和結合部分に水素が添加されたものを挙げることができる。
【００４３】
中でもガラス転移温度が１０℃以下のゴム成分を含有するゴム状弾性体が好ましく、特にブタジエンゴム、ブタジエン−アクリル複合ゴム、アクリルゴム、アクリル-シリコン複合ゴムを使用したゴム状弾性体が好ましい。ブタジエン−アクリル複合ゴムとは、ブタジエンゴムの成分と、アクリルゴムの成分とを共重合または分離できないよう相互に絡み合ったＩＰＮ構造をとるように重合したゴムであり、アクリル−シリコン複合ゴムとは、アクリルゴムの成分とシリコンゴムの成分とを分離できないよう相互に絡み合ったＩＰＮ構造としたまたはシリコンゴム中の官能基と共重合したものをいう。
【００４４】
芳香族ビニルとしては、スチレン、α−メチルスチレン、ｐ−メチルスチレン、アルコキシスチレン、ハロゲン化スチレン等を挙げることができ、特にスチレンが好ましい。またアクリル酸エステルとしては、アクリル酸メチル、アクリル酸エチル、アクリル酸ブチル、アクリル酸シクロヘキシル、アクリル酸オクチル等を挙げることができ、メタアクリル酸エステルとしては、メタクリル酸メチル、メタクリル酸エチル、メタクリル酸ブチル、メタクリル酸シクロヘキシル、メタクリル酸オクチル等を挙げることができ、メタクリル酸メチルが特に好ましい。
【００４５】
ガラス転移温度が１０℃以下のゴム成分を含有するゴム状弾性体は、塊状重合、溶液重合、懸濁重合、乳化重合のいずれの重合法で製造したものであってもよく、共重合の方式は一段グラフトであっても多段グラフトであっても差し支えない。また製造の際に副生するグラフト成分のみのコポリマーとの混合物であってもよい。かかるゴム状弾性体は市販されており容易に入手することが可能である。例えばガラス転移温度が１０℃以下のゴム成分として、ブタジエンゴム、またはブタジエン−アクリル複合ゴムを主体とするものとしては、鐘淵化学工業（株）のカネエースＢシリーズ、三菱レーヨン（株）のメタブレンＣシリーズ、呉羽化学工業（株）のＥＸＬシリーズ、ＨＩＡシリーズ、ＢＴＡシリーズ、ＫＣＡシリーズが挙げられ、ガラス転移温度が１０℃以下のゴム成分としてアクリル−シリコン複合ゴムを主体とするものとしては三菱レーヨン（株）よりメタブレンＳ−２００１あるいはＲＫ−２００という商品名で市販されているものが挙げられる。かかる（Ｃ）ゴム状弾性体の配合量は本発明の熱可塑性樹脂組成物１００重量部に対して１〜５０重量部が好ましく、３〜４０重量部であることが更に好ましい。
【００４６】
また、本発明の熱可塑性樹脂組成物には、（Ａ）芳香族ポリカーボネート樹脂と（Ｂ）芳香族ポリエステル樹脂とのエステル交換反応を抑制する為や成形時等における分子量の低下や色相の悪化を防止するために熱安定剤を配合することができる。かかる熱安定剤としては、亜リン酸、リン酸、亜ホスホン酸、ホスホン酸およびこれらのエステル等が挙げられ、具体的には、トリフェニルホスファイト、トリス（ノニルフェニル）ホスファイト、トリス（２，４−ジ−ｔｅｒｔ−ブチルフェニル）ホスファイト、トリデシルホスファイト、トリオクチルホスファイト、トリオクタデシルホスファイト、ジデシルモノフェニルホスファイト、ジオクチルモノフェニルホスファイト、ジイソプロピルモノフェニルホスファイト、モノブチルジフェニルホスファイト、モノデシルジフェニルホスファイト、モノオクチルジフェニルホスファイト、ビス（２，６−ジ−ｔｅｒｔ−ブチル−４−メチルフェニル）ペンタエリスリトールジホスファイト、２，２−メチレンビス（４，６−ジ−ｔｅｒｔ−ブチルフェニル）オクチルホスファイト、ビス（ノニルフェニル）ペンタエリスリトールジホスファイト、ビス（２，４−ジ−ｔｅｒｔ−ブチルフェニル）ペンタエリスリトールジホスファイト、ジステアリルペンタエリスリトールジホスファイト、トリブチルホスフェート、トリエチルホスフェート、トリメチルホスフェート、トリフェニルホスフェート、ジフェニルモノオルソキセニルホスフェート、ジブチルホスフェート、ジオクチルホスフェート、ジイソプロピルホスフェート、４，４’−ビフェニレンジホスホスフィン酸テトラキス（２，４−ジ−ｔｅｒｔ−ブチルフェニル）、ベンゼンホスホン酸ジメチル、ベンゼンホスホン酸ジエチル、ベンゼンホスホン酸ジプロピル等が挙げられる。なかでも、トリスノニルフェニルホスファイト、トリメチルホスフェート、トリス（２，４−ジ−ｔｅｒｔ−ブチルフェニル）ホスファイトおよびベンゼンホスホン酸ジメチルが好ましく使用される。これらの熱安定剤は、単独でもしくは２種以上混合して用いてもよい。かかる熱安定剤の配合量は、本発明の熱可塑性樹脂組成物１００重量部に対して０．０００１〜１重量部が好ましく、０．０００５〜０．５重量部がより好ましく、０．００１〜０．１重量部が更に好ましい。
【００４７】
また、本発明の熱可塑性樹脂組成物には、酸化防止の目的で通常知られた酸化防止剤を配合することもできる。かかる酸化防止剤としては、例えばペンタエリスリトールテトラキス（３−メルカプトプロピオネート）、ペンタエリスリトールテトラキス（３−ラウリルチオプロピオネート）、グリセロール−３−ステアリルチオプロピオネート、トリエチレングリコール−ビス［３−（３−ｔｅｒｔ−ブチル−５−メチル−４−ヒドロキシフェニル）プロピオネート］、１，６−ヘキサンジオール−ビス［３−（３，５−ジ−ｔｅｒｔ−ブチル−４−ヒドロキシフェニル）プロピオネート］、ペンタエリスリトール−テトラキス［３−（３，５−ジ−ｔｅｒｔ−ブチル−４−ヒドロキシフェニル）プロピオネート］、オクタデシル−３−（３，５−ジ−ｔｅｒｔ−ブチル−４−ヒドロキシフェニル）プロピオネート、１，３，５−トリメチル−２，４，６−トリス（３，５−ジ−ｔｅｒｔ−ブチル−４−ヒドロキシベンジル）ベンゼン、Ｎ，Ｎ−ヘキサメチレンビス（３，５−ジ−ｔｅｒｔ−ブチル−４−ヒドロキシ−ヒドロシンナマイド）、３，５−ジ−ｔｅｒｔ−ブチル−４−ヒドロキシ−ベンジルホスホネート−ジエチルエステル、トリス（３，５−ジ−ｔｅｒｔ−ブチル−４−ヒドロキシベンジル）イソシアヌレート、４，４’−ビフェニレンジホスホスフィン酸テトラキス（２，４−ジ−ｔｅｒｔ−ブチルフェニル）、３，９−ビス｛１，１−ジメチル−２−［β−（３−ｔｅｒｔ−ブチル−４−ヒドロキシ−５−メチルフェニル）プロピオニルオキシ］エチル｝−２，４，８，１０−テトラオキサスピロ（５，５）ウンデカン等が挙げられる。これら酸化防止剤の配合量は、本発明の熱可塑性樹脂組成物１００重量部に対して０．０００１〜０．５重量部が好ましい。
【００４８】
更に、本発明の熱可塑性樹脂組成物に本発明の目的を損なわない範囲で、剛性などを改良する為に無機充填材を配合することが可能である。かかる無機充填材のとしてはタルク、マイカ、ガラスフレーク、ガラスビーズ、炭酸カルシウム、酸化チタン等の板状または粒状の無機充填材やガラス繊維、ガラスミルドファイバー、ワラストナイト、カーボン繊維、金属系導電性繊維等の繊維状充填材を挙げることができる。これら無機充填材の配合量は本発明の熱可塑性樹脂組成物１００重量部に対して１〜１００重量部が好ましく、３〜７０重量部が更に好ましい。
【００４９】
また、本発明で使用可能な無機充填材はシランカップリング剤等で表面処理されていてもよい。この表面処理により、芳香族ポリカーボネート樹脂の分解が抑制されるなど本発明の目的である湿熱疲労性をより良好なものとすることができる。ここでいうシランカップリング剤とは下記式
【００５０】
【化１】

【００５１】
［ここでＹはアミノ基、エポキシ基、カルボン酸基、ビニル基、メルカプト基、ハロゲン原子等の樹脂マトリックスと反応性または親和性を有する基、Ｒ¹、Ｒ²、Ｒ³はそれぞれ単結合または炭素数１〜７のアルキレン基を表わし、そのアルキレン分子鎖中に、アミド結合、エステル結合、エーテル結合あるいはイミノ結合が介在してもよく、Ｘ¹、Ｘ²、Ｘ³はそれぞれアルコキシ基好ましくは炭素数１〜４のアルコキシ基またはハロゲン原子］で表わされるシラン化合物をいい、具体的には、ビニルトリクロルシラン、ビニルトリエトキシシラン、ビニルトリメトキシシラン、γ−メタクリロキシプロピルトリメトキシシラン、β−（３，４−エポキシシクロヘキシル）エチルトリメトキシシラン、γ−グリシドキシプロピルトリメトキシシラン、Ｎ−β（アミノエチル）γ−アミノプロピルトリメトキシシラン、γ−アミノプロピルトリエトキシシラン、Ｎ−フェニル−γ−アミノプロピルトリメトキシシラン、γ−メルカプトプロピルトリメトキシシランおよびγ−クロロプロピルトリメトキシシランなどが挙げられる。
【００５２】
また、本発明の熱可塑性樹脂組成物には溶融成形時の金型からの離型性をより向上させるために、本発明の目的を損なわない範囲で離型剤を配合することも可能である。かかる離型剤としては、オレフィン系ワックス、カルボキシル基及び／またはカルボン酸無水物基を含有するオレフィン系ワックス、シリコーンオイル、オルガノポリシロキサン、一価又は多価アルコールの高級脂肪酸エステル、パラフィンワックス、蜜蝋等が挙げられる。かかる離型剤の配合量は、本発明の熱可塑性樹脂組成物１００重量部に対し、０．０１〜５重量部が好ましい。
【００５３】
オレフィン系ワックスとしては、特にポリエチレンワックスおよび／または１−アルケン重合体の使用が好ましくきわめて良好な離型効果が得られる。ポリエチレンワックスとしては現在一般に広く知られているものが使用でき、エチレンを高温高圧下で重合したもの、ポリエチレンを熱分解したもの、ポリエチレン重合物より低分子量成分を分離精製したもの等が挙げられる。また分子量、分岐度等は特に制限されるものではないが、分子量としては数平均分子量で１，０００以上が好ましい。
【００５４】
１−アルケン重合体としては炭素数５〜４０の１−アルケンを重合したものが使用できる。１−アルケン重合体の分子量としては数平均分子量で１，０００以上が好ましい。
【００５５】
カルボキシル基及び／またはカルボン酸無水物基を含有するオレフィン系ワックスとは、オレフィン系ワックスを後処理により、カルボキシル基及び／またはカルボン酸無水物基を含有させた化合物、好ましくはマレイン酸及び／または無水マレイン酸で後処理により変性したものが挙げられる。更にエチレン及び／または１−アルケンを重合または共重合する際にかかるモノマー類と共重合可能なカルボキシル基及び／またはカルボン酸無水物基を含有する化合物、好ましくはマレイン酸及び／または無水マレイン酸を共重合したものも挙げられ、かかる共重合をしたものはカルボキシル基及び／またはカルボン酸無水物基が高濃度かつ安定して含まれるので好ましい。このカルボキシル基やカルボン酸無水物基は、このオレフィン系ワックスのどの部分に結合してもよく、またその濃度は特に限定されないが、オレフィン系ワックス１ｇ当り０．１〜６ｍｅｑ／ｇの範囲が好ましい。かかるカルボキシル基及び／またはカルボン酸無水物基を含有するオレフィン系オレフィン系ワックスは、市販品としては例えばダイヤカルナ−ＰＡ３０［三菱化学（株）の商品名］、ハイワックス酸処理タイプの２２０３Ａ、１１０５Ａ［三井石油化学（株）の商品名］等が挙げられ、これら単独でまたは二種以上の混合物として用いられる。
【００５６】
本発明において無機充填材を配合する場合には、カルボキシル基及び／またはカルボン酸無水物基を含有するオレフィン系ワックスを添加することは、溶融成形時の金型からの離型性をより向上させる為だけではなく、無機充填材配合による衝撃強度低下を抑制する効果も発現し好ましく使用できるものである。
【００５７】
高級脂肪酸エステルとしては、炭素原子数１〜２０の一価又は多価アルコールと炭素原子数１０〜３０の飽和脂肪酸との部分エステル又は全エステルであるのが好ましい。かかる一価又は多価アルコールと飽和脂肪酸との部分エステル又は全エステルとしては、ステアリン酸モノグリセリド、ステアリン酸ジグリセリド、ステアリン酸トリグリセリド、ステアリン酸モノソルビテート、ベヘニン酸モノグリセリド、ペンタエリスリトールモノステアレート、ペンタエリスリトールテトラステアレート、ペンタエリスリトールテトラペラルゴネート、プロピレングリコールモノステアレート、ステアリルステアレート、パルミチルパルミテート、ブチルステアレート、メチルラウレート、イソプロピルパルミテート、ビフェニルビフェネ−ト、ソルビタンモノステアレート、２−エチルヘキシルステアレート等が挙げられ、なかでも、ステアリン酸モノグリセリド、ステアリン酸トリグリセリド、ペンタエリスリトールテトラステアレートが好ましく用いられる。
【００５８】
本発明の熱可塑性樹脂組成物には、本発明の目的を損なわない範囲で、光安定剤を配合することができる。かかる光安定剤としては、例えば２−（２’−ヒドロキシ−５’−ｔｅｒｔ−オクチルフェニル）ベンゾトリアゾール、２−（３−ｔｅｒｔ−ブチル−５−メチル−２−ヒドロキシフェニル）−５−クロロベンゾトリアゾール、２−（５−メチル−２−ヒドロキシフェニル）ベンゾトリアゾール、２−［２−ヒドロキシ−３，５−ビス（α，α−ジメチルベンジル）フェニル］−２Ｈ−ベンゾトリアゾール、２，２’−メチレンビス（４−クミル−６−ベンゾトリアゾールフェニル）、２，２’−ｐ−フェニレンビス（１，３−ベンゾオキサジン−４−オン）等が挙げられる。かかる光安定剤の配合量は、本発明の熱可塑性樹脂組成物１００重量部に対して０．０１〜２重量部が好ましい。
【００５９】
本発明の熱可塑性樹脂組成物には、本発明の目的を損なわない範囲で、帯電防止剤を配合することができる。かかる帯電防止剤としては、例えばポリエーテルエステルアミド、グリセリンモノステアレート、ドデシルベンゼンスルホン酸アンモニウム塩、ドデシルベンゼンスルホン酸ホスホニウム塩、アルキルスルホン酸ナトリウム塩、無水マレイン酸モノグリセライド、無水マレイン酸ジグリセライド等が挙げられる。
【００６０】
本発明の熱可塑性樹脂組成物には、本発明の目的が損なわれない量の難燃剤を配合することができる。難燃剤としては、ハロゲン化ビスフェノールＡのポリカーボネート型難燃剤、有機塩系難燃剤、芳香族リン酸エステル系難燃剤、あるいは、ハロゲン化芳香族リン酸エステル型難燃剤等があげられ、それらを一種以上配合することができる。具体的にハロゲン化ビスフェノールＡのポリカーボネート型難燃剤は、テトラクロロビスフェノールＡのポリカーボネート型難燃剤、テトラクロロビスフェノールＡとビスフェノールＡとの共重合ポリカーボネート型難燃剤テトラブロモビスフェノールＡのポリカーボネート型難燃剤、テトラブロモビスフェノールＡとビスフェノールＡとの共重合ポリカーボネート型難燃剤等である。具体的に有機塩系難燃剤は、ジフェニルスルホン−３，３’−ジスルホン酸ジカリウム、ジフェニルスルホン−３−スルホン酸カリウム、２，４，５−トリクロロベンゼンスルホン酸ナトリウム、２，４，５−トリクロロベンゼンスルホン酸カリウム、ビス（２，６−ジブロモ−４−クミルフェニル）リン酸カリウム、ビス（４−クミルフェニル）リン酸ナトリウム、ビス（ｐ−トルエンスルホン）イミドカリウム、ビス（ジフェニルリン酸）イミドカリウム、ビス（２，４，６−トリブロモフェニル）リン酸カリウム、ビス（２，４−ジブロモフェニル）リン酸カリウム、ビス（４−ブロモフェニル）リン酸カリウム、ジフェニルリン酸カリウム、ジフェニルリン酸ナトリウム、パーフルオロブタンスルホン酸カリウム、ラウリル硫酸ナトリウムあるいはカリウム、ヘキサデシル硫酸ナトリウムあるいはカリウム等である。具体的にハロゲン化芳香族リン酸エステル型難燃剤は、トリス（２，４，６−トリブロモフェニル）ホスフェート、トリス（２，４−ジブロモフェニル）ホスフェート、トリス（４−ブロモフェニル）ホスフェート等である。具体的に芳香族リン酸エステル系難燃剤は、トリフェニルホスフェート、トリス（２，６−キシリル）ホスフェート、テトラキス（２，６−キシリル）レゾルシンジホスフェート、テトラキス（２，６−キシリル）ヒドロキノンジホスフェート、テトラキス（２，６−キシリル）−４，４’−ビフェノールジホスフェート、テトラフェニルレゾルシンジホスフェート、テトラフェニルヒドロキノンジホスフェート、テトラフェニル−４，４’−ビフェノールジホスフェート、芳香環ソースがレゾルシンとフェノールでありフェノール性ＯＨ基を含まない芳香族ポリホスフェート、芳香環ソースがレゾルシンとフェノールでありフェノール性ＯＨ基を含む芳香族ポリホスフェート、芳香環ソースがヒドロキノンとフェノールでありフェノール性ＯＨ基を含まない芳香族ポリホスフェート、同様のフェノール性ＯＨ基を含む芳香族ポリホスフェート、（以下に示す「芳香族ポリホスフェート」は、フェノール性ＯＨ基を含む芳香族ポリホスフェートと含まない芳香族ポリホスフェートの両方を意味するものとする）芳香環ソースがビスフェノールＡとフェノールである芳香族ポリホスフェート、芳香環ソースがテトラブロモビスフェノールＡとフェノールである芳香族ポリホスフェート、芳香環ソースがレゾルシンと２，６−キシレノールである芳香族ポリホスフェート、芳香環ソースがヒドロキノンと２，６−キシレノールである芳香族ポリホスフェート、芳香環ソースがビスフェノールＡと２，６−キシレノールである芳香族ポリホスフェート、芳香環ソースがテトラブロモビスフェノールＡと２，６−キシレノールである芳香族ポリホスフェート等である。
【００６１】
これらの難燃剤の中で、ハロゲン化ビスフェノールＡのポリカーボネート型難燃剤として、テトラブロモビスフェノールＡのポリカーボネート型難燃剤、テトラブロモビスフェノールＡとビスフェノールＡとの共重合ポリカーボネートが好ましく、更にテトラブロモビスフェノールＡのポリカーボネート型難燃剤が好ましい。有機塩系難燃剤としてはジフェニルスルホン−３，３’−ジスルホン酸ジカリウム、ジフェニルスルホン−３−スルホン酸カリウム、２，４，５−トリクロロベンゼンスルホン酸ナトリウムが好ましい。芳香族リン酸エステル系難燃剤としては、トリフェニルホスフェート、トリクレジルフスフェート、クレジルジフェニルホスフェート、レズルシノールビス（ジキシレニルホスフェート）、ビス（２，３ジブロモプロピル）ホスフェート、トリス（２，３ジブロモプロピル）ホスフェートが好ましい。これらの中でも、オゾン層破壊しない芳香族リン酸エステル系難燃剤であるトリフェニルホスフェート、トリクレジルフスフェート、レズルシノールビス（ジキシレニルホスフェート）が最も好ましい。
【００６２】
本発明の熱可塑性樹脂組成物には、他の樹脂を本発明の目的が損なわれない範囲であれば配合することもできる。
【００６３】
かかる他の樹脂としては、例えば、ポリアミド樹脂、ポリイミド樹脂、ポリエーテルイミド樹脂、ポリウレタン樹脂、ポリフェニレンエーテル樹脂、ポリフェニレンスルフィド樹脂、ポリスルホン樹脂、ポリエチレン、ポリプロピレン等のポリオレフィン樹脂、ポリスチレン樹脂、アクリロニトリル／スチレン共重合体（ＡＳ樹脂）、アクリロニトリル／ブタジエン／スチレン共重合体（ＡＢＳ樹脂）、ポリメタクリレート樹脂、フェノール樹脂、エポキシ樹脂等の樹脂が挙げられる。
【００６４】
本発明の熱可塑性樹脂組成物を製造するには、任意の方法が採用される。例えばタンブラー、Ｖ型ブレンダー、スーパーミキサー、ナウターミキサー、バンバリーミキサー、混練ロール、押出機等で混合する方法が適宜用いられる。こうして得られる熱可塑性樹脂組成物は、そのまま又は溶融押出機で一旦ペレット状にしてから、射出成形法、押出成形法、圧縮成形法等の通常知られている方法で成形品にすることができる。なお、本発明の熱可塑性樹脂組成物の混和性を高めて安定した離型性や各物性を得るためには、溶融押出において二軸押出機を使用するのが好ましい。更に無機充填材を配合する場合には直接押出機ホッパー口あるいは押出機途中から投入する方法、芳香族ポリカーボネート樹脂や芳香族ポリエステル樹脂と予め混合する方法、一部の芳香族ポリカーボネート樹脂や芳香族ポリエステル樹脂と予め混合してマスターを作成し投入する方法、かかるマスターを押出機途中から投入する方法のいずれの方法も取ることができる。
【００６５】
かくして得られた本発明の熱可塑性樹脂組成物は、パソコン、ワープロ、ファクス、コピー機、プリンター等のＯＡ機器のハウジング及びシャーシ、ＣＤ−ＲＯＭのトレー、シャーシー、ターンテーブル、ピックアップシャーシ、各種ギア等のＯＡ内部部品、テレビ、ビデオ、電気洗濯機、電気乾燥機、電気掃除機等の家庭電器製品のハウジングや部品、電気鋸、電動ドリル等の電動工具、望遠鏡鏡筒、顕微鏡鏡筒、カメラボディ、カメラハウジング、カメラ鏡筒等の光学機器部品、ドアーハンドル、ピラー、バンパー、計器パネル等の自動車用部品に有用である。特に機械的強度、耐薬品性、湿熱疲労性などが要求される自動車部品（アウタードアハンドル、インナードアハンドルなど）や機械部品（電動工具カバーなど）に有用である。
【００６６】
【実施例】
以下に実施例をあげて更に説明する。実施例中の「部」または「％」は重量部または重量％を示し、また評価項目および組成物中の各成分の記号は下記の内容を意味する。
【００６７】
（１）残存触媒活性指数
残存触媒活性量は以下のように測定した。サンプルは測定前に１２０℃、４時間の減圧乾燥を行い測定に供した。測定機としてレオメトリックス（株）製ＲＤＡ−ＩＩ型粘弾性測定器を使用し、直径２５ｍｍの円錐円板型の治具を装着し、測定中サンプルの本機器の適正条件を満足した窒素気流中、測定温度である２７０℃に設定した。測定温度はオーブン内の温度を測定することにより設定した。その後乾燥した測定用サンプルをセットし、サンプル全体が十分に測定温度となるよう静置の後、その後角速度１ｒａｄ／秒の回転をすることで測定を開始し、これを３０分間続け、その間の溶融粘度の変化を観察した。この測定より回転開始後５分後及び３０分後の溶融粘度を求め、それらの値を下記式（ｉ）より計算することにより、１分間当たりの溶融粘度変化を残存触媒活性指数として表した。
【００６８】
【数２】

【００６９】
（２）末端水酸基濃度
サンプル０．０２ｇを０．４ｍｌのクロロホルムに溶解し、２０℃で１Ｈ−ＮＭＲ（日本電子社製ＥＸ−２７０）を用いて末端水酸基および末端フェニル基を測定し、下記式（ii）により末端水酸基濃度を測定した。
末端水酸基濃度（モル％）＝（末端水酸基数／全末端数）×１００ …（ii）
【００７０】
（３）湿熱疲労性
図１に示したいわゆるＣ型の測定用サンプルを用いて、８０℃、９０％ＲＨの雰囲気で、正弦波で振動数１Ｈｚ、最大荷重２ｋｇの条件で、以下の疲労試験機［（株）島津製作所製 島津サーボパルサー ＥＨＦ−ＥＣ５型］を用いて、測定用サンプルが破断するまでの回数を測定した。
【００７１】
（４）剛性
ＡＳＴＭ Ｄ７９０により、曲げ弾性率を測定した。
【００７２】
（５）耐薬品性
ＡＳＴＭ Ｄ６３８にて使用する引張り試験片に１％歪みを付加し、３０℃のエッソレギュラーガソリンに３分間浸漬した後、引張り強度を測定し保持率を算出した。保持率は下記式により計算した。
保持率（％）＝（処理サンプルの強度／未処理サンプルの強度）×１００
【００７３】
（６）ノッチ付衝撃値
ＡＳＴＭ Ｄ２５６により厚み３．２ｍｍの試験片を用いノッチ側からおもりを衝撃させ衝撃値を測定した。
【００７４】
（７）耐熱性
ＪＩＳ Ｋ７２０７により、Ａ法（試験片に加える曲げ応力：１８.５kgf/cm²）で、荷重たわみ温度を測定した。
【００７５】
（ａ）芳香族ポリカーボネート樹脂
▲１▼ＥＸ−ＰＣ
［参照例１］本発明の芳香族ポリカーボネート樹脂の製造
撹拌機及び蒸留塔を備えた反応器に２,２−ビス（４−ヒドロキシフェニル）プロパン２２８部（約１モル）、ジフェニルカーボネート（バイエル社製）２２０部（約１．０３モル）及び触媒として水酸化ナトリウム０.００００２４部（約６×１０^-7モル／ビスフェノールＡ１モル）とテトラメチルアンモニウムヒドロキシド０.００７３部（約８×１０^-5モル／ビスフェノールＡ１モル）を仕込み、窒素置換した。この混合物を２００℃まで加熱して撹拌しながら溶解させた。次いで、減圧度を３０Ｔｏｒｒとして加熱しながら１時間で大半のフェノールを留去し、更に２７０℃まで温度を上げ、減圧度を１Ｔｏｒｒとして２時間重合反応を行ったところで、末端停止剤として２−メトキシカルボニルフェニルフェニルカーボネート３．１部を添加した。その後２７０℃、１Ｔｏｒｒ以下で５分間末端封鎖反応を行った。次に溶融状態のままで、触媒中和剤としてドデシルベンゼンスルホン酸テトラブチルホスホニウム塩０．００３５部（約６×１０^-6モル／ビスフェノールＡ１モル）添加して２７０℃、１０Ｔｏｒｒ以下で反応を継続し、粘度平均分子量２３３００、末端水酸基濃度５モル％、残存触媒活性指数０．０１％の芳香族ポリカーボネート樹脂を得た。この芳香族ポリカーボネート樹脂をギアポンプでエクストルーダーに送った。エクストルーダー途中でトリスノニルフェニルホスファイトを０.００３重量％、トリメチルホスフェートを０.０５重量％加え、芳香族ポリカーボネート樹脂ペレットを得た。
【００７６】
▲２▼ＣＥＸ−ＰＣ
［参照例２］比較のための芳香族ポリカーボネート樹脂の製造
末端停止剤として２−メトキシカルボニルフェニルフェニルカーボネート及び触媒失活剤としてドデシルベンゼンスルホン酸テトラブチルホスホニウム塩を用いない以外は参照例１と同様な条件で芳香族ポリカーボネート樹脂を製造した。尚、この芳香族ポリカーボネート樹脂の粘度平均分子量２３０００、末端水酸基濃度５２モル％、残存触媒活性指数２．５であった。
【００７７】
（ｂ）芳香族ポリエステル樹脂
▲１▼ポリエチレンテレフタレート：ＴＲ−８５８０；帝人（株）製、固有粘度０．８（以下ＰＥＴと称す）
▲２▼ポリブチレンテレフタレート：ＴＲＢ−Ｈ；帝人（株）製、固有粘度１．０７（以下ＰＢＴと称す）
【００７８】
（ｃ）ゴム質弾性体
▲１▼ブタジエン−アルキルアクリレート−アルキルメタアクリレート共重合体
：ＥＸＬ−２６０２；呉羽化学工業（株）製（以下Ｅ−１と称す）
▲２▼ポリオルガノシロキサン成分及びポリアルキル（メタ）アクリレートゴム成分が相互侵入網目構造を有している複合ゴム：Ｓ−２００１；三菱レイヨン（株）製（以下Ｅ−２と称す）
【００７９】
（ｄ）無機充填材
▲１▼ガラス繊維：チョップドストランドＥＣＳ−０３Ｔ−５１１；日本電気硝子（株）製、ウレタン集束処理、繊維径１３μｍ。（以下Ｇと称す）
▲２▼ワラストナイト：サイカテックＮＮ−４；巴工業（株）製、平均粒径Ｄ＝４μｍ、３μｍ以上の粒子系分布が８２．５％及び１０μｍ以上の粒子系分布が０．７％、アスペクト比Ｌ／Ｄ＝２０（以下Ｗと称す）
▲３▼タルク：Ｐ−３；日本タルク（株）（以下Ｔと称す）
【００８０】
（ｅ）カルボキシル基及び／またはカルボン酸無水物基を含有するオレフィン系ワックス
▲１▼α−オレフィンと無水マレイン酸との共重合によるオレフィン系ワックス：ダイヤカルナ−ＰＡ３０；三菱化成（株）製（無水マレイン酸含有量＝１０ｗｔ％）（以下ＷＡＸと称す）
【００８１】
［実施例１〜１６、比較例１〜８］
上記で得られた芳香族ポリカーボネート樹脂及び表１、２，３記載の各成分及びリン系安定剤（サイクリック ネオペンタンテトライルビス（オクタデシルフォスファイト）：旭電化工業（株）製ＰＥＰ−８）０．１重量部をタンブラーを使用して均一に混合した後、３０ｍｍφベント付き二軸押出機（神戸製鋼（株）製ＫＴＸ−３０）により、シリンダー温度２６０℃、１０ｍｍＨｇの真空度で脱気しながらペレット化し、得られたペレットを１２０℃で５時間乾燥後、射出成形機（住友重機械工業（株）製ＳＧ１５０Ｕ型）を使用して、シリンダー温度２６０℃、金型温度７０℃の条件で測定用の成形片を作成した。
【００８２】
それぞれの比較で明らかな如く本発明の実施例である残存触媒活性指数を有する芳香族ポリカーボネート樹脂と芳香族ポリエステル樹脂からなる熱可塑性樹脂組成物は、比較例の残存触媒活性が残っている芳香族ポリカーボネート樹脂を用いたものに比較して湿熱疲労性が特に優れており、耐薬品性、衝撃強度も優れていることがわかる。
【００８３】
【表１】

【００８４】
【表２】

【００８５】
【表３】

【００８６】
［実施例１７〜２８、比較例９〜１６］
上記で得られた芳香族ポリカーボネート樹脂及び表４、５、６記載の各成分及びリン系安定剤（サイクリック ネオペンタンテトライルビス（オクタデシルフォスファイト）：旭電化工業（株）製ＰＥＰ−８）０．１重量部をタンブラーを使用して均一に混合した後、以下実施例１と同様な方法で測定用の成形片を作成した。
【００８７】
表４、５より本発明の熱可塑性樹脂組成物にガラス繊維、ワラストナイト、タルクなどの無機充填材を配合することにより耐薬品性、衝撃強度を保持しつつ、剛性、湿熱疲労性がさらに向上し好ましいことがわかる。また、表６記載の比較例の残存触媒活性が残っている芳香族ポリカーボネート樹脂を用いた芳香族ポリカーボネート樹脂と芳香族ポリエステル樹脂とからなる熱可塑性樹脂組成物に無機充填材を配合しても湿熱疲労性の改良効果は小さく、さらに衝撃強度、耐薬品性も低く、本発明の改良効果は大きいことがわかる。
【００８８】
【表４】

【００８９】
【表５】

【００９０】
【表６】

【００９１】
【発明の効果】
本発明により、芳香族ポリカーボネート樹脂と芳香族ポリエステル樹脂からなる樹脂組成物が本来有する耐薬品性などの特性を生かし、湿熱疲労性に優れた芳香族ポリカーボネート樹脂と芳香族ポリエステル樹脂とからなる熱可塑性樹脂組成物を提供することが可能である。
【図面の簡単な説明】
【図１】湿熱疲労性を評価するために使用した、いわゆるＣ型サンプルの正面図である。なおサンプルの厚みは３ｍｍである。符号６で示される孔の部分に試験機の治具を通し、符号７で示される垂直方向に所定の荷重をかけて試験を行う。
【符号の説明】
１ Ｃ型形状の二重円の中心
２ 二重円の内側円の半径（２０ｍｍ）
３ 二重円の外側円の半径（３０ｍｍ）
４ 治具装着用孔の位置を示す中心角（６０°）
５ サンプル端面の間隙（１３ｍｍ）
６ 治具装着用孔（直径４ｍｍの円であり、サンプル幅の中央に位置する）
７ 疲労試験時におけるサンプルに課される荷重の方向[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a thermoplastic resin composition comprising an aromatic polycarbonate resin composition excellent in chemical resistance and wet heat fatigue resistance and an aromatic polyester resin. More specifically, a thermoplastic resin composition composed of an aromatic polycarbonate resin and an aromatic polyester resin that maintains the properties such as chemical resistance inherent in the aromatic polycarbonate resin and the aromatic polyester resin and has excellent wet heat fatigue properties. About.
[0002]
[Prior art]
Aromatic polycarbonate resins are widely used because they are excellent in mechanical properties such as impact resistance, heat resistance, and transparency. As a method for producing such an aromatic polycarbonate resin, a method in which phosgene is directly reacted with a dihydric phenol such as bisphenol A (interfacial polymerization method) or a dihydric phenol such as bisphenol and diallyl carbonate such as diphenyl carbonate is melted. A method of polymerizing by transesterification in a state (hereinafter sometimes referred to as a melting method) is known. Among such production methods, the transesterification reaction of dihydric phenol and diallyl carbonate has no problem of using halogen compounds such as phosgene and methylene chloride as compared with the production by interfacial polymerization, and is environmentally friendly. This is a promising technology because it has an advantage that it can be manufactured at low cost with low load.
[0003]
In addition, thermoplastic resin compositions comprising an aromatic polycarbonate resin and an aromatic polyester resin have been studied variously as materials having excellent chemical resistance and impact resistance, and are widely used in various fields such as the automobile field and the OA field. in use.
[0004]
Japanese Patent Publication No. 7-68441 discloses a thermoplastic resin composition from an aromatic polycarbonate resin and an aromatic polyester resin. It is disclosed that the aromatic polycarbonate resin used in the patent is substantially an aromatic polycarbonate resin produced by a melting method and is superior in melt stability to a solution method aromatic polycarbonate resin composition. However, the melt-process aromatic polycarbonate resin used in such a resin composition has not been subjected to a catalyst deactivation treatment, and it is difficult to say that the melt stability is sufficient, and has the disadvantage of being inferior in wet heat fatigue. It was. Therefore, sufficient care is required when using it for automobile parts (outer door handles, inner door handles, etc.) and machine parts (power tool covers, etc.) that require mechanical strength, chemical resistance, and wet heat fatigue. There are currently no materials that satisfy such requirements.
[0005]
[Problems to be solved by the invention]
An object of the present invention is to maintain a property such as chemical resistance inherent in an aromatic polycarbonate resin and an aromatic polyester resin, and to provide a thermoplastic resin comprising an aromatic polycarbonate resin and an aromatic polyester resin excellent in wet heat fatigue. It is to provide a composition.
As a result of diligent examination of such a resin composition, we discovered that the polymerization catalyst remaining in the aromatic polycarbonate resin of the melting method was deactivated, and that the above object was achieved by using this aromatic polycarbonate resin. The invention has been completed.
[0006]
[Means for Solving the Problems]
  In the present invention, (A) the residual catalyst activity index is 2% or less,The hydroxyl group terminal is 0 to 40 mol% with respect to all terminals,And a thermoplastic resin composition comprising 5 to 95% by weight of an aromatic polycarbonate resin obtained by reacting a dihydric phenol and a carbonate precursor by a melting method, and (B) 95 to 5% by weight of an aromatic polyester resin. It is.
[0007]
The (A) aromatic polycarbonate resin used in the present invention is usually obtained by reacting a dihydric phenol and a carbonate precursor by a melting method. Representative examples of the dihydric phenol used here include hydroquinone, resorcinol, 1,6-dihydroxynaphthalene, 2,6-dihydroxynaphthalene, 4,4′-dihydroxydiphenyl, bis (4-hydroxyphenyl) methane. 1,1-bis (4-hydroxyphenyl) -1-phenylmethane, bis {(4-hydroxy-3,5-dimethyl) phenyl} methane, 1,1-bis (4-hydroxyphenyl) ethane, 2-bis (4-hydroxyphenyl) ethane, 1,1-bis (4-hydroxyphenyl) -1-phenylethane, bis (4-hydroxyphenyl) diphenylmethane, bis (4-hydroxyphenyl) -1-naphthylmethane, 2,2-bis (4-hydroxyphenyl) propane (commonly called bisphenol A), 2 (4-hydroxyphenyl) -2- (3-hydroxyphenyl) propane, 2,2-bis {(4-hydroxy-3-methyl) phenyl} propane, 2,2-bis {(4-hydroxy-3,5 -Dimethyl) phenyl} propane, 2,2-bis {(3,5-dibromo-4-hydroxy) phenyl} propane, 2,2-bis {(3,5-dichloro-4-hydroxy) phenyl} propane, , 2-bis {(3-bromo-4-hydroxy) phenyl} propane, 2,2-bis {(3-chloro-4-hydroxy) phenyl} propane, 4-bromoresorcinol, 2,2-bis {(3 -Isopropyl-4-hydroxy) phenyl} propane, 2,2-bis {(3-phenyl-4-hydroxy) phenyl} propane, 2,2-bis {(3-ethyl-4- Droxy) phenyl} propane, 2,2-bis {(3-n-propyl-4-hydroxy) phenyl} propane, 2,2-bis {(3-sec-butyl-4-hydroxy) phenyl} propane, 2, 2-bis {(3-tert-butyl-4-hydroxy) phenyl} propane, 2,2-bis {(3-cyclohexyl-4-hydroxy) phenyl} propane, 2,2-bis {(3-methoxy-4 -Hydroxy) phenyl} propane, 2,2-bis (4-hydroxyphenyl) hexafluoropropane, 1,1-dibromo-2,2-bis (4-hydroxyphenyl) ethylene, 1,1-dichloro-2,2 -Bis {(3-phenoxy-4-hydroxy) phenyl} ethylene, ethylene glycol bis (4-hydroxyphenyl) ether, 2,2-bi (4-hydroxyphenyl) butane, 2,2-bis (4-hydroxyphenyl) -3-methylbutane, 2,2-bis (4-hydroxyphenyl) -3,3-dimethylbutane, 2,4-bis ( 4-hydroxyphenyl) -2-methylbutane, 1,1-bis (4-hydroxyphenyl) isobutane, 2,2-bis (4-hydroxyphenyl) pentane, 2,2-bis (4-hydroxyphenyl) -4- Methylpentane, 3,3-bis (4-hydroxyphenyl) pentane, 1,1-bis (4-hydroxyphenyl) cyclohexane, 1,1-bis (4-hydroxyphenyl) -4-isopropylcyclohexane, 1,1- Bis (4-hydroxyphenyl) -3,3,5-trimethylcyclohexane, 1,1-bis (4-hydroxyphenyl) silane Rhododecane, 9,9-bis (4-hydroxyphenyl) fluorene, 9,9-bis {(4-hydroxy-3-methyl) phenyl} fluorene, α, α'-bis (4-hydroxyphenyl) -o-diisopropyl Benzene, α, α′-bis (4-hydroxyphenyl) -m-diisopropylbenzene, α, α′-bis (4-hydroxyphenyl) -p-diisopropylbenzene, 1,3-bis (4-hydroxyphenyl)- 5,7-dimethyladamantane, 4,4′-dihydroxydiphenylsulfone, bis {(3,5-dimethyl-4-hydroxy) phenyl} sulfone, 4,4′-dihydroxydiphenyl sulfoxide, 4,4′-dihydroxydiphenyl sulfide 4,4'-dihydroxydiphenyl ketone, 4,4'-dihydroxydiph Such vinyl ether and 4,4'-dihydroxydiphenyl ester and the like, it can be used alone or in combination.
[0008]
Among them, bisphenol A, 2,2-bis {(4-hydroxy-3-methyl) phenyl} propane, 2,2-bis {(3,5-dibromo-4-hydroxy) phenyl} propane, ethylene glycol bis (4 -Hydroxyphenyl) ether, 2,2-bis (4-hydroxyphenyl) hexafluoropropane, 2,2-bis (4-hydroxyphenyl) butane, 1,1-bis (4-hydroxyphenyl) cyclohexane, 1,1 -Bis (4-hydroxyphenyl) -3,3,5-trimethylcyclohexane, 4,4'-dihydroxydiphenylsulfone, bis {(3,5-dimethyl-4-hydroxy) phenyl} sulfone, 4,4'-dihydroxy Diphenyl sulfoxide, 4,4'-dihydroxydiphenyl sulfide, and 4,4 ' Homopolymers obtained from at least one bisphenol selected from the group consisting of dihydroxy diphenyl ketone or copolymers are preferable, in particular, a homopolymer of bisphenol A is preferably used.
[0009]
As the carbonate precursor, carbonate ester or haloformate is used. Specific examples include diphenyl carbonate, ditolyl carbonate, bis (chlorophenyl) carbonate, m-cresyl carbonate, dinaphthyl carbonate, bis (diphenyl) carbonate, dimethyl carbonate, diethyl carbonate, dibutyl carbonate, and dicyclohexyl carbonate. However, it is not limited to these. Preferably, diphenyl carbonate or dihaloformate of dihydric phenol is used, and more preferably diphenyl carbonate is used. These carbonates may also be used alone or in combination of two or more.
[0010]
When the polycarbonate resin is produced by reacting the dihydric phenol and the carbonate precursor by a melting method, a catalyst, a terminal terminator, a dihydric phenol antioxidant, or the like may be used as necessary. The polycarbonate resin may be a branched polycarbonate resin copolymerized with a trifunctional or higher polyfunctional aromatic compound, or may be a polyester carbonate resin copolymerized with an aromatic or aliphatic difunctional carboxylic acid, Moreover, the mixture which mixed 2 or more types of the obtained polycarbonate resin may be sufficient.
[0011]
Examples of the trifunctional or higher polyfunctional aromatic compound include phloroglucin, phloroglucide, or 4,6-dimethyl-2,4,6-tris (4-hydroxydiphenyl) heptene-2,2,4,6-trimethyl-2. , 4,6-tris (4-hydroxyphenyl) heptane, 1,3,5-tris (4-hydroxyphenyl) benzene, 1,1,1-tris (4-hydroxyphenyl) ethane, 1,1,1- Tris (3,5-dimethyl-4-hydroxyphenyl) ethane, 2,6-bis (2-hydroxy-5-methylbenzyl) -4-methylphenol, 4- {4- [1,1-bis (4- Hydroxyphenyl) ethyl] benzene} -α, α-dimethylbenzylphenol and other trisphenols, tetra (4-hydroxyphenyl) methane, bis (2,4-dihi Droxyphenyl) ketone, 1,4-bis (4,4-dihydroxytriphenylmethyl) benzene, trimellitic acid, pyromellitic acid, benzophenonetetracarboxylic acid and their acid chlorides, 2- (4-hydroxyphenyl) -2- (3′-phenoxycarbonyl-4′-hydroxyphenyl) propane, 2- (4-hydroxyphenyl) -2- (3′-carboxy-4′-hydroxyphenyl) propane, and the like. 1,1-tris (4-hydroxyphenyl) ethane and 1,1,1-tris (3,5-dimethyl-4-hydroxyphenyl) ethane are preferred, especially 1,1,1-tris (4-hydroxyphenyl) Ethane is preferred.
[0012]
The reaction by the melting method is usually a transesterification reaction between a dihydric phenol and a carbonate ester. In the presence of an inert gas, the dihydric phenol and the carbonate ester are mixed while being heated, and the resulting alcohol or phenol is distilled. It is done by the method of making it come out. The reaction temperature varies depending on the boiling point of the alcohol or phenol produced, but is usually in the range of 120 to 350 ° C. In the latter stage of the reaction, the system is evacuated to about 10 to 0.1 Torr to facilitate the distillation of the alcohol or phenol produced. The reaction time is usually about 1 to 4 hours.
[0013]
In addition, a polymerization catalyst can be used in order to increase the polymerization rate in the melting method, and as such a polymerization catalyst, for example, condensation is performed using a catalyst comprising (i) an alkali metal compound and / or (ii) a nitrogen-containing basic compound. Is done.
[0014]
Examples of the alkali metal compound used as the catalyst include alkali metal hydroxides, hydrocarbons, carbonates, acetates, nitrates, nitrites, sulfites, cyanates, thiocyanates, stearates, hydrogens. Examples thereof include boron halide salts, benzoates, hydrogen phosphates, bisphenols, and phenol salts.
[0015]
Specific examples include sodium hydroxide, potassium hydroxide, lithium hydroxide, sodium bicarbonate, potassium bicarbonate, lithium bicarbonate, sodium carbonate, potassium carbonate, lithium carbonate, sodium acetate, potassium acetate, lithium acetate, sodium nitrate, Potassium nitrate, lithium nitrate, sodium nitrite, potassium nitrite, lithium nitrite, sodium sulfite, potassium sulfite, lithium sulfite, sodium cyanate, potassium cyanate, lithium cyanate, sodium thiocyanate, potassium thiocyanate, lithium thiocyanate, stearin Sodium phosphate, potassium stearate, lithium stearate, sodium borohydride, lithium borohydride, potassium borohydride, sodium phenyl borohydride, sodium benzoate, benzoate Potassium acid, lithium benzoate, disodium hydrogen phosphate, dipotassium hydrogen phosphate, dilithium hydrogen phosphate, disodium salt of bisphenol A, dipotassium salt, dilithium salt, sodium salt of phenol, potassium salt, lithium salt, etc. .
[0016]
The alkali metal compound as a catalyst is 10 per 1 mol of dihydric phenol.^-8-10^-FiveIt can be used in the molar range. Deviating from the above-mentioned range is not preferred because there are problems such as adversely affecting various physical properties of the obtained polycarbonate, and the transesterification reaction does not proceed sufficiently, resulting in failure to obtain a high molecular weight polycarbonate.
[0017]
Examples of the nitrogen-containing basic compound as a catalyst include tetramethylammonium hydroxide (Me_FourNOH), tetraethylammonium hydroxide (Et_FourNOH), tetrabutylammonium hydroxide (Bu)_FourNOH), benzyltrimethylammonium hydroxide (φ-CH₂(Me)_ThreeNOH), ammonium hydroxides having alkyl, aryl, alkylaryl groups such as hexadecyltrimethylammonium hydroxide, tertiary amines such as triethylamine, tributylamine, dimethylbenzylamine, hexadecyldimethylamine, or tetramethylammonium Borohydride (Me_FourNBH_Four), Tetrabutylammonium borohydride (Bu)_FourNBH_Four), Tetrabutylammonium tetraphenylborate (Bu)_FourNBPh_Four), Tetramethylammonium tetraphenylborate (Me_FourNBPh_Four) And the like. Among these, tetramethylammonium hydroxide (Me_FourNOH), tetraethylammonium hydroxide (Et_FourNOH), tetrabutylammonium hydroxide (Bu)_FourNOH) is preferred, especially tetramethylammonium hydroxide (Me_FourNOH) is preferred.
[0018]
In the nitrogen-containing basic compound, the ammonium nitrogen atom in the nitrogen-containing basic compound is 1 × 10 5 per mole of dihydric phenol.^-Five~ 1x10^-3It is preferable to use it in the ratio which becomes an equivalent. A more preferred ratio is 2 × 10 against the same criteria^-Five~ 7 × 10^-FourIt is the ratio which becomes an equivalent. A particularly preferred ratio is 5 × 10 for the same criteria.^-Five~ 5x10^-FourIt is the ratio which becomes an equivalent. In the present invention, alkali metal or alkaline earth metal alkoxides, alkali metal or alkaline earth metal organic acid salts, zinc compounds, boron compounds, aluminum compounds, silicon compounds, germanium compounds, if desired. Catalysts usually used in esterification reactions and transesterification reactions such as organotin compounds, lead compounds, osmium compounds, antimony compounds, manganese compounds, titanium compounds, zirconium compounds and the like can be used. A catalyst may be used independently and may be used in combination of 2 or more types. The amount of these polymerization catalysts used is preferably 1 × 10 with respect to 1 mol of dihydric phenol as a raw material.^-9~ 1x10^-FiveEquivalent weight, more preferably 1 × 10^-8~ 5x10^-6It is selected in the range of equivalents.
[0019]
Further, in this polymerization reaction, in order to reduce the phenolic end group, for example, phenol, pt-butylphenol, pt-butylphenylphenyl carbonate, pt-butyl may be used at the later stage or after completion of the polycondensation reaction. Phenyl carbonate, p-cumyl phenol, p-cumyl phenyl phenyl carbonate, p-cumyl phenyl carbonate, bis (chlorophenyl) carbonate, bis (bromophenyl) carbonate, bis (nitrophenyl) carbonate, bis (phenylphenyl) carbonate , Chlorophenyl phenyl carbonate, bromophenyl phenyl carbonate, nitrophenyl phenyl carbonate, diphenyl carbonate, methoxycarbonylphenyl phenyl carbonate, 2,2,4-trimethyl 4- (4-hydroxyphenyl) it is preferable to add a chroman 2,4,4-trimethyl-2- (4-hydroxyphenyl) compounds such as chroman and ethoxycarbonyl phenyl carbonate. Of these, 2-chlorophenyl phenyl carbonate, 2-methoxycarbonylphenyl phenyl carbonate and 2-ethoxycarbonylphenyl phenyl carbonate are preferable, and 2-methoxycarbonylphenyl phenyl carbonate is particularly preferably used.
[0020]
In this invention, it is preferable to block the terminal of (A) aromatic polycarbonate resin using a terminal blocker. Moreover, it is preferable to control the hydroxyl terminal of the aromatic polycarbonate resin before adding the end-blocking agent to 20 mol% or more, preferably 30 mol% or more, more preferably 40 mol% or more with respect to all terminals. By doing so, specific end groups can be introduced at a high rate, and the modification effect of the aromatic polycarbonate resin can be enhanced. Usually, it is advantageous to use a terminal blocking agent for an aromatic polycarbonate resin in which the ratio of the hydroxyl terminal of the aromatic polycarbonate resin is in the range of 30 to 95 mol% of the hydroxyl groups among all the terminals. Moreover, the terminal ratio of the aromatic polycarbonate resin hydroxyl group before adding the end-blocking agent can be controlled by the charging ratio of dihydric phenol and diphenyl carbonate as raw materials. Here, the number of moles of the terminal hydroxyl group in a certain amount of the aromatic polycarbonate resin is determined by a conventional method.¹It can be determined by 1 H-NMR.
[0021]
The hydroxyl terminal of the (A) aromatic polycarbonate resin of the present invention is 0 to 40 mol%, preferably 0 to 18 mol%, more preferably 0 to 9 mol%, most preferably 0 to 7 mol, based on all terminals. % Is preferably controlled. Here, 0 mol%¹When measured by the 1 H-NMR method, it indicates that detection is impossible. When the hydroxyl terminal is in such a range, chemical resistance and wet heat fatigue resistance are further improved.
[0022]
In this invention, it is preferable to use the deactivator which neutralizes the activity of the catalyst in (A) aromatic polycarbonate resin. Specific examples of the deactivator include, for example, benzene sulfonic acid, p-toluene sulfonic acid, methyl benzene sulfonate, ethyl benzene sulfonate, butyl benzene sulfonate, octyl benzene sulfonate, phenyl benzene sulfonate, p-toluene sulfone. Sulfonic acid esters such as methyl acid, ethyl p-toluenesulfonate, butyl p-toluenesulfonate, octyl p-toluenesulfonate, phenyl p-toluenesulfonate; trifluoromethanesulfonic acid, naphthalenesulfonic acid, sulfonated polystyrene , Methyl acrylate-sulfonated styrene copolymer, dodecylbenzenesulfonate-2-phenyl-2-propyl, dodecylbenzenesulfonate-2-phenyl-2-butyl, octylsulfonate tetrabutylphospho Salts, tetrabutylphosphonium decylsulfonate, tetrabutylphosphonium benzenesulfonate, tetraethylphosphonium dodecylbenzenesulfonate, tetrabutylphosphonium dodecylbenzenesulfonate, tetrahexylphosphonium dodecylbenzenesulfonate, tetradecylbenzenesulfonate tetra Octyl phosphonium salt, decyl ammonium butyl sulfate, decyl ammonium decyl sulfate, dodecyl ammonium methyl sulfate, dodecyl ammonium ethyl sulfate, dodecyl methyl ammonium methyl sulfate, dodecyl dimethyl ammonium tetradecyl sulfate, tetradecyl dimethyl ammonium methyl sulfate, tetramethyl ammonium hexyl sulfate Over DOO, decyl trimethyl ammonium hexadecyl sulfate, tetrabutylammonium dodecylbenzyl sulfate, tetraethylammonium dodecylbenzyl sulfate, there may be mentioned compounds such as tetramethylammonium dodecylbenzyl sulfate, and the like. Two or more of these compounds can be used in combination.
[0023]
Among the deactivators, phosphonium or ammonium salt type deactivators themselves are particularly stable even at 200 ° C. or higher. When the deactivator is added to the aromatic polycarbonate resin, the polycondensation reaction catalyst can be quickly neutralized to obtain the desired aromatic polycarbonate resin. That is, the deactivator is preferably used in a proportion of 0.01 to 500 ppm, more preferably 0.01 to 300 ppm, and particularly preferably 0.01 to 100 ppm with respect to the polycarbonate produced after the polymerization blocking reaction. .
[0024]
Moreover, it is preferable to use this deactivator in the ratio of 0.5-50 mol with respect to 1 mol of polycondensation reaction catalysts in the ratio with respect to a polycondensation reaction catalyst. There is no particular limitation on the method of adding the quencher to the aromatic polycarbonate resin after end-capping. For example, these may be added while the aromatic polycarbonate resin as a reaction product is in a molten state, or may be added after being once melted and then remelted. In the former, while the aromatic polycarbonate resin, which is a reaction product in the molten reactor or the extruder obtained by the end-capping reaction, is in the molten state, these are added to add the aromatic polycarbonate resin. After forming, a quenching agent may be added while the aromatic polycarbonate resin obtained by the polymerization blocking reaction is pelletized from the reactor through the extruder. An aromatic polycarbonate resin can be obtained by kneading.
[0025]
In the melt-polymerized aromatic polycarbonate resin of the present invention, since a polymerization catalyst is used to accelerate the reaction, the polymerization catalyst often remains after the polymerization reaction. If the remaining catalyst is left as it is after completion of the polymerization reaction, there is a problem that the aromatic polycarbonate resin is decomposed or re-reacted due to the catalytic activity of the polymerization catalyst. Further, the thermoplastic resin composition of the aromatic polycarbonate resin having the residual catalytic activity and the aromatic polyester resin has a problem that its influence is enlarged.
[0026]
In the present invention, it is necessary to suppress such residual catalyst activity. Using the residual catalyst activity index as an index for suppressing the residual catalyst activity, the measurement is performed as follows. A rotating rheometer capable of measuring the melt viscosity range of the sample to be measured is used as the measuring instrument, and the resin to be measured is melted in a sufficient nitrogen stream so that the sample is not oxidized by external oxygen. Under temperature conditions, the sample is rotated in a constant direction and at a constant angular velocity, and the change in melt viscosity is observed. As the jig of the viscoelasticity measuring instrument when measuring the sample, a conical disk-shaped jig is used so that the strain of the entire sample is constant, that is, the shear rate is constant. That is, the change in melt viscosity per minute calculated by the following formula (i) was used as the residual catalyst activity index.
[0027]
[Expression 1]

[0028]
This residual catalyst activity index is 2% or less, preferably 1% or less, more preferably 0.5% or less, and most preferably 0.2% or less. If the residual catalyst activity index exceeds this range, the aromatic polycarbonate resin changes with time, which is not preferable.
[0029]
The molecular weight of the aromatic polycarbonate resin is preferably 12,000 to 30,000, more preferably 14,000 to 27,000, and particularly preferably 15,000 to 25,000 in terms of viscosity average molecular weight (M). An aromatic polycarbonate resin having such a viscosity average molecular weight is preferable because sufficient strength as a composition can be obtained, and melt fluidity at the time of molding is good and molding distortion does not occur. The viscosity average molecular weight referred to in the present invention is obtained by inserting the specific viscosity (ηsp) obtained from a solution obtained by dissolving 0.7 g of a polycarbonate resin in 100 mL of methylene chloride at 20 ° C. into the following equation.
ηsp / c = [η] + 0.45 × [η]²c (where [η] is the intrinsic viscosity)
[Η] = 1.23 × 10^-FourM^0.83
c = 0.7
[0030]
The (B) aromatic polyester resin used in the present invention is a polymer or copolymer obtained by a condensation reaction mainly comprising an aromatic dicarboxylic acid or a reactive inducer thereof and a diol or an ester derivative thereof. is there.
[0031]
As the aromatic dicarboxylic acid here, terephthalic acid, isophthalic acid, orthophthalic acid, 1,5-naphthalenedicarboxylic acid, 2,6-naphthalenedicarboxylic acid, 4,4′-biphenyldicarboxylic acid, 4,4′-biphenyl ether Dicarboxylic acid, 4,4′-biphenylmethane dicarboxylic acid, 4,4′-biphenylsulfone dicarboxylic acid, 4,4′-biphenylisopropylidenedicarboxylic acid, 1,2-bis (phenoxy) ethane-4,4′-dicarboxylic acid Aromatic dicarboxylic acids such as acid, 2,5-anthracene dicarboxylic acid, 2,6-anthracene dicarboxylic acid, 4,4′-p-terphenylene dicarboxylic acid, 2,5-pyridinedicarboxylic acid are preferably used, In particular, terephthalic acid and 2,6-naphthalenedicarboxylic acid can be preferably used.
[0032]
Aromatic dicarboxylic acids may be used as a mixture of two or more. In addition, if the amount is small, it is also possible to use a mixture of one or more aliphatic dicarboxylic acids such as adipic acid, azelaic acid, sebacic acid and dodecanediic acid, and alicyclic dicarboxylic acids such as cyclohexanedicarboxylic acid, etc. together with the dicarboxylic acid. .
[0033]
Examples of the diol that is a component of the aromatic polyester of the present invention include ethylene glycol, propylene glycol, butylene glycol, hexylene glycol, neopentyl glycol, pentamethylene glycol, hexamethylene glycol, decamethylene glycol, 2-methyl-1, Contains aromatic diols such as 2,2-bis (β-hydroxyethoxyphenyl) propane, aliphatic diols such as 3-propanediol, diethylene glycol and triethylene glycol, alicyclic diols such as 1,4-cyclohexanedimethanol Diols and the like, and mixtures thereof. If the amount is even smaller, one or more long-chain diols having a molecular weight of 400 to 6000, that is, polyethylene glycol, poly-1,3-propylene glycol, polytetramethylene glycol, and the like may be copolymerized.
[0034]
The aromatic polyester of the present invention can be branched by introducing a small amount of a branching agent. Although there is no restriction | limiting in the kind of branching agent, A trimesic acid, a trimellitic acid, a trimethylol ethane, a trimethylol propane, a pentaerythritol, etc. are mentioned.
[0035]
Specific aromatic polyester resins include polyethylene terephthalate (PET), polypropylene terephthalate, polybutylene terephthalate (PBT), polyhexylene terephthalate, polyethylene naphthalate (PEN), polybutylene naphthalate (PBN), polyethylene-1, In addition to 2-bis (phenoxy) ethane-4,4′-dicarboxylate and the like, copolymerized polyesters such as polyethylene isophthalate / terephthalate, polybutylene terephthalate / isophthalate, and the like, and mixtures thereof can be preferably used. Among these, polyethylene terephthalate and polyethylene naphthalate using ethylene glycol as the diol component are preferable in terms of balance of thermal properties and mechanical properties, and further, 50% of polyethylene terephthalate and polyethylene naphthalate are used in 100% by weight of the aromatic polyester resin. Those having a weight% or more are preferred, and those having a polyethylene terephthalate content of 50% by weight or more are particularly preferred. In addition, polybutylene terephthalate and polybutylene naphthalate using butylene glycol as the diol component are preferably balanced in moldability, mechanical properties, etc., and the polybutylene terephthalate / polyethylene terephthalate ratio in the range of 2 to 10 by weight ratio. preferable.
[0036]
Further, the terminal group structure of the obtained aromatic polyester resin is not particularly limited, and may be a case where the ratio of one of the hydroxyl groups and the carboxyl group in the terminal group is large in addition to the case where the ratio is almost the same. . Moreover, those terminal groups may be sealed by reacting a compound having reactivity with such terminal groups.
[0037]
As for the method for producing such an aromatic polyester resin, a dicarboxylic acid component and the diol component are polymerized while heating in the presence of a polycondensation catalyst containing titanium, germanium, antimony, etc., as a by-product, according to a conventional method. It is carried out by discharging water or lower alcohol out of the system. Examples of germanium-based polymerization catalysts include germanium oxides, hydroxides, halides, alcoholates, phenolates, and the like, and more specifically, germanium oxide, germanium hydroxide, germanium tetrachloride, tetramethoxygermanium, and the like. Can be illustrated.
[0038]
Further, in the present invention, compounds such as manganese, zinc, calcium, magnesium, etc. used in the transesterification reaction, which is the former stage of the conventionally known polycondensation, can be used together, and phosphoric acid or phosphorous acid after completion of the transesterification reaction. Such a catalyst can be deactivated and polycondensed with an acid compound or the like.
[0039]
The molecular weight of the aromatic polyester resin is not particularly limited, but the intrinsic viscosity measured at 25 ° C. using o-chlorophenol as a solvent is 0.4 to 1.2, preferably 0.65 to 1.15.
[0040]
The blending ratio of (A) aromatic polycarbonate resin and (B) aromatic polyester resin in the thermoplastic resin composition of the present invention is (A) aromatic polycarbonate resin 5 to 95% by weight, preferably 10 to 90% by weight. (B) Aromatic polyester resin is 95 to 5% by weight, preferably 90 to 10% by weight. When the blending ratio of (A) aromatic polycarbonate resin is less than 5% by weight, that is, when the blending ratio of (B) aromatic polyester resin is more than 95% by weight, the impact resistance becomes insufficient, and (A) the aromatic polycarbonate resin When the blending ratio is more than 95% by weight, that is, when the blending ratio of the (B) aromatic polyester resin is less than 5% by weight, the chemical resistance becomes insufficient.
[0041]
Further, (C) a rubber-like elastic body can be added to the thermoplastic resin composition of the present invention for the purpose of further improving impact resistance. (C) rubber-like elastic material usable in the present invention is a rubber component having a glass transition temperature of 10 ° C. or less, and can be copolymerized with aromatic vinyl, vinyl cyanide, acrylate ester, methacrylate ester, and the like. And a graft copolymer obtained by copolymerizing one or more monomers selected from various vinyl compounds. On the other hand, various types known as thermoplastic elastomers having no crosslinked structure, such as polyurethane elastomers, polyester elastomers, styrene-ethylenepropylene-styrene elastomers, polyetheramide elastomers, and the like, can also be used.
[0042]
As the rubber component having a glass transition temperature of 10 ° C. or lower here, butadiene rubber, butadiene-acrylic composite rubber, acrylic rubber, acrylic-silicon composite rubber, isoprene rubber, styrene-butadiene rubber, chloroprene rubber, ethylene-propylene rubber, Examples thereof include nitrile rubber, ethylene-acrylic rubber, silicon rubber, epichlorohydrin rubber, fluororubber, and those obtained by adding hydrogen to these unsaturated bonds.
[0043]
Among these, a rubbery elastic body containing a rubber component having a glass transition temperature of 10 ° C. or less is preferable, and a rubbery elastic body using butadiene rubber, butadiene-acrylic composite rubber, acrylic rubber, or acrylic-silicon composite rubber is particularly preferable. The butadiene-acrylic composite rubber is a rubber polymerized so as to have an IPN structure in which the butadiene rubber component and the acrylic rubber component cannot be copolymerized or separated from each other, and the acrylic-silicon composite rubber is An acrylic rubber component and a silicone rubber component are intertwined with each other so that they cannot be separated or copolymerized with functional groups in the silicone rubber.
[0044]
Examples of the aromatic vinyl include styrene, α-methylstyrene, p-methylstyrene, alkoxystyrene, halogenated styrene and the like, and styrene is particularly preferable. Examples of acrylic esters include methyl acrylate, ethyl acrylate, butyl acrylate, cyclohexyl acrylate, octyl acrylate, etc., and examples of methacrylic esters include methyl methacrylate, ethyl methacrylate, methacrylic acid. Examples thereof include butyl, cyclohexyl methacrylate, octyl methacrylate and the like, and methyl methacrylate is particularly preferable.
[0045]
The rubber-like elastic body containing a rubber component having a glass transition temperature of 10 ° C. or lower may be produced by any polymerization method of bulk polymerization, solution polymerization, suspension polymerization, and emulsion polymerization, and is a copolymerization method. May be a single-stage graft or a multi-stage graft. Moreover, the mixture with the copolymer of only the graft component byproduced in the case of manufacture may be sufficient. Such rubber-like elastic bodies are commercially available and can be easily obtained. For example, as a rubber component having a glass transition temperature of 10 ° C. or lower, butadiene rubber or butadiene-acrylic composite rubber is mainly used as Kane Ace B series of Kanegafuchi Chemical Industry Co., Ltd. or Metabrene C of Mitsubishi Rayon Co. Series, Kureha Chemical Industry Co., Ltd. EXL series, HIA series, BTA series, KCA series are listed. Mitsubishi Rayon (A) is a rubber component whose glass transition temperature is 10 ° C or less. And those sold under the trade name of Methbrene S-2001 or RK-200. The blending amount of the rubber-like elastic body (C) is preferably 1 to 50 parts by weight, more preferably 3 to 40 parts by weight with respect to 100 parts by weight of the thermoplastic resin composition of the present invention.
[0046]
In addition, the thermoplastic resin composition of the present invention has a molecular weight reduction or hue deterioration during molding or the like to suppress the transesterification reaction between (A) aromatic polycarbonate resin and (B) aromatic polyester resin. A heat stabilizer can be blended to prevent. Examples of the heat stabilizer include phosphorous acid, phosphoric acid, phosphonous acid, phosphonic acid, and esters thereof. Specifically, triphenyl phosphite, tris (nonylphenyl) phosphite, tris (2 , 4-di-tert-butylphenyl) phosphite, tridecyl phosphite, trioctyl phosphite, trioctadecyl phosphite, didecyl monophenyl phosphite, dioctyl monophenyl phosphite, diisopropyl monophenyl phosphite, monobutyl diphenyl Phosphite, monodecyl diphenyl phosphite, monooctyl diphenyl phosphite, bis (2,6-di-tert-butyl-4-methylphenyl) pentaerythritol diphosphite, 2,2-methylenebis (4,6-di-) tert Butylphenyl) octyl phosphite, bis (nonylphenyl) pentaerythritol diphosphite, bis (2,4-di-tert-butylphenyl) pentaerythritol diphosphite, distearyl pentaerythritol diphosphite, tributyl phosphate, triethyl phosphate , Trimethyl phosphate, triphenyl phosphate, diphenyl monoorthoxenyl phosphate, dibutyl phosphate, dioctyl phosphate, diisopropyl phosphate, 4,4′-biphenylenediphosphosphinic acid tetrakis (2,4-di-tert-butylphenyl), benzenephosphone Examples thereof include dimethyl acid, diethyl benzenephosphonate, and dipropyl benzenephosphonate. Of these, trisnonylphenyl phosphite, trimethyl phosphate, tris (2,4-di-tert-butylphenyl) phosphite and dimethyl benzenephosphonate are preferably used. These heat stabilizers may be used alone or in admixture of two or more. The blending amount of the heat stabilizer is preferably 0.0001 to 1 part by weight, more preferably 0.0005 to 0.5 part by weight, and more preferably 0.001 to 100 parts by weight with respect to 100 parts by weight of the thermoplastic resin composition of the present invention. 0.1 part by weight is more preferable.
[0047]
Further, the thermoplastic resin composition of the present invention can be blended with an antioxidant generally known for the purpose of preventing oxidation. Examples of the antioxidant include pentaerythritol tetrakis (3-mercaptopropionate), pentaerythritol tetrakis (3-lauryl thiopropionate), glycerol-3-stearyl thiopropionate, triethylene glycol bis [3 -(3-tert-butyl-5-methyl-4-hydroxyphenyl) propionate], 1,6-hexanediol-bis [3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate], Pentaerythritol-tetrakis [3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate], octadecyl-3- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate, 1, 3,5-trimethyl-2,4 -Tris (3,5-di-tert-butyl-4-hydroxybenzyl) benzene, N, N-hexamethylenebis (3,5-di-tert-butyl-4-hydroxy-hydrocinnamide), 3,5 -Di-tert-butyl-4-hydroxy-benzylphosphonate-diethyl ester, tris (3,5-di-tert-butyl-4-hydroxybenzyl) isocyanurate, 4,4'-biphenylenediphosphosphinic acid tetrakis (2 , 4-Di-tert-butylphenyl), 3,9-bis {1,1-dimethyl-2- [β- (3-tert-butyl-4-hydroxy-5-methylphenyl) propionyloxy] ethyl}- 2,4,8,10-tetraoxaspiro (5,5) undecane and the like. The blending amount of these antioxidants is preferably 0.0001 to 0.5 parts by weight with respect to 100 parts by weight of the thermoplastic resin composition of the present invention.
[0048]
Furthermore, an inorganic filler can be blended with the thermoplastic resin composition of the present invention in order to improve rigidity and the like within a range not impairing the object of the present invention. Examples of such inorganic fillers include talc, mica, glass flakes, glass beads, calcium carbonate, titanium oxide and other plate-like or granular inorganic fillers, glass fibers, glass milled fibers, wollastonite, carbon fibers, metallic conductive materials. And fibrous fillers such as conductive fibers. The blending amount of these inorganic fillers is preferably 1 to 100 parts by weight, more preferably 3 to 70 parts by weight with respect to 100 parts by weight of the thermoplastic resin composition of the present invention.
[0049]
The inorganic filler usable in the present invention may be surface-treated with a silane coupling agent or the like. By this surface treatment, it is possible to further improve the wet heat fatigue, which is an object of the present invention, such as suppression of decomposition of the aromatic polycarbonate resin. The silane coupling agent here is the following formula
[0050]
[Chemical 1]

[0051]
[Y is a group having reactivity or affinity with the resin matrix such as amino group, epoxy group, carboxylic acid group, vinyl group, mercapto group, halogen atom, etc., R¹, R², R^ThreeEach represents a single bond or an alkylene group having 1 to 7 carbon atoms, and an amide bond, an ester bond, an ether bond or an imino bond may be interposed in the alkylene molecular chain.¹, X², X^ThreeEach represents a silane compound represented by an alkoxy group, preferably an alkoxy group having 1 to 4 carbon atoms or a halogen atom]. Specifically, vinyltrichlorosilane, vinyltriethoxysilane, vinyltrimethoxysilane, and γ-methacryloxypropyl. Trimethoxysilane, β- (3,4-epoxycyclohexyl) ethyltrimethoxysilane, γ-glycidoxypropyltrimethoxysilane, N-β (aminoethyl) γ-aminopropyltrimethoxysilane, γ-aminopropyltriethoxy Examples thereof include silane, N-phenyl-γ-aminopropyltrimethoxysilane, γ-mercaptopropyltrimethoxysilane, and γ-chloropropyltrimethoxysilane.
[0052]
Further, in order to further improve the releasability from the mold at the time of melt molding, the thermoplastic resin composition of the present invention can be blended with a release agent as long as the object of the present invention is not impaired. . Such release agents include olefin waxes, olefin waxes containing carboxyl groups and / or carboxylic anhydride groups, silicone oils, organopolysiloxanes, higher fatty acid esters of mono- or polyhydric alcohols, paraffin waxes, beeswax. Etc. The amount of the release agent is preferably 0.01 to 5 parts by weight with respect to 100 parts by weight of the thermoplastic resin composition of the present invention.
[0053]
As the olefin wax, polyethylene wax and / or 1-alkene polymer is particularly preferable, and a very good release effect can be obtained. As the polyethylene wax, those generally known at present can be used, and those obtained by polymerizing ethylene under high temperature and high pressure, those obtained by thermally decomposing polyethylene, those obtained by separating and purifying low molecular weight components from polyethylene polymer, and the like can be mentioned. The molecular weight, the degree of branching, etc. are not particularly limited, but the molecular weight is preferably 1,000 or more in terms of number average molecular weight.
[0054]
As the 1-alkene polymer, a polymer obtained by polymerizing 1-alkene having 5 to 40 carbon atoms can be used. The molecular weight of the 1-alkene polymer is preferably 1,000 or more in terms of number average molecular weight.
[0055]
The olefinic wax containing a carboxyl group and / or a carboxylic acid anhydride group is a compound containing a carboxyl group and / or a carboxylic acid anhydride group by post-treatment of the olefinic wax, preferably maleic acid and / or Those modified by post-treatment with maleic anhydride. Further, a compound containing a carboxyl group and / or a carboxylic acid anhydride group, preferably maleic acid and / or maleic anhydride, copolymerizable with such monomers when polymerizing or copolymerizing ethylene and / or 1-alkene. Copolymerized ones are also included, and such copolymerized ones are preferable because carboxyl groups and / or carboxylic anhydride groups are contained in a high concentration and stably. The carboxyl group or carboxylic acid anhydride group may be bonded to any part of the olefin wax, and the concentration thereof is not particularly limited, but is preferably in the range of 0.1 to 6 meq / g per gram of olefin wax. . Examples of commercially available olefinic olefinic waxes containing carboxyl groups and / or carboxylic acid anhydride groups include Diacarna-PA30 [trade name of Mitsubishi Chemical Corporation], high wax acid treatment type 2203A, 1105A. [Trade name of Mitsui Petrochemical Co., Ltd.] and the like, and these are used alone or as a mixture of two or more.
[0056]
In the case of blending an inorganic filler in the present invention, the addition of an olefin wax containing a carboxyl group and / or a carboxylic anhydride group further improves the releasability from the mold during melt molding. Not only for this purpose, but also exhibits an effect of suppressing a reduction in impact strength due to the blending of the inorganic filler, and can be preferably used.
[0057]
The higher fatty acid ester is preferably a partial ester or a total ester of a monohydric or polyhydric alcohol having 1 to 20 carbon atoms and a saturated fatty acid having 10 to 30 carbon atoms. Such partial esters or total esters of monohydric or polyhydric alcohols and saturated fatty acids include stearic acid monoglyceride, stearic acid diglyceride, stearic acid triglyceride, stearic acid monosorbate, behenic acid monoglyceride, pentaerythritol monostearate, pentaerythritol. Tetrastearate, pentaerythritol tetrapelargonate, propylene glycol monostearate, stearyl stearate, palmityl palmitate, butyl stearate, methyl laurate, isopropyl palmitate, biphenyl biphenate, sorbitan monostearate, 2- And ethyl hexyl stearate, among others, stearic acid monoglyceride, stearic acid triglyceride, pentaerythritol Le tetrastearate are preferably used.
[0058]
The thermoplastic resin composition of the present invention can be blended with a light stabilizer as long as the object of the present invention is not impaired. Examples of such a light stabilizer include 2- (2′-hydroxy-5′-tert-octylphenyl) benzotriazole and 2- (3-tert-butyl-5-methyl-2-hydroxyphenyl) -5-chlorobenzo. Triazole, 2- (5-methyl-2-hydroxyphenyl) benzotriazole, 2- [2-hydroxy-3,5-bis (α, α-dimethylbenzyl) phenyl] -2H-benzotriazole, 2,2′- Examples include methylene bis (4-cumyl-6-benzotriazolephenyl), 2,2′-p-phenylenebis (1,3-benzoxazin-4-one) and the like. The blending amount of the light stabilizer is preferably 0.01 to 2 parts by weight with respect to 100 parts by weight of the thermoplastic resin composition of the present invention.
[0059]
An antistatic agent can be blended with the thermoplastic resin composition of the present invention as long as the object of the present invention is not impaired. Examples of the antistatic agent include polyether ester amide, glycerin monostearate, ammonium dodecylbenzenesulfonate, phosphonium salt of dodecylbenzenesulfonate, sodium alkylsulfonate, maleic anhydride monoglyceride, maleic anhydride diglyceride and the like. It is done.
[0060]
The thermoplastic resin composition of the present invention can be blended with an amount of a flame retardant that does not impair the object of the present invention. Examples of flame retardants include halogenated bisphenol A polycarbonate flame retardants, organic salt flame retardants, aromatic phosphate ester flame retardants, and halogenated aromatic phosphate ester flame retardants. It can mix | blend above. Specifically, the polycarbonate type flame retardant of halogenated bisphenol A includes a polycarbonate type flame retardant of tetrachlorobisphenol A, a polycarbonate type flame retardant of tetrachlorobisphenol A and bisphenol A, a polycarbonate type flame retardant of tetrabromobisphenol A, tetra A copolymer polycarbonate type flame retardant of bromobisphenol A and bisphenol A; Specifically, organic salt flame retardants include dipotassium diphenylsulfone-3,3′-disulfonate, potassium diphenylsulfone-3-sulfonate, sodium 2,4,5-trichlorobenzenesulfonate, 2,4,5-trisulfonate. Potassium chlorobenzenesulfonate, potassium bis (2,6-dibromo-4-cumylphenyl) phosphate, sodium bis (4-cumylphenyl) phosphate, potassium bis (p-toluenesulfone) imide, potassium bis (diphenylphosphate) imide, Potassium bis (2,4,6-tribromophenyl) phosphate, potassium bis (2,4-dibromophenyl) phosphate, potassium bis (4-bromophenyl) phosphate, potassium diphenylphosphate, sodium diphenylphosphate, Potassium perfluorobutane sulfonate, sodium lauryl sulfate Um or potassium hexadecyl sulfate, sodium or potassium. Specifically, the halogenated aromatic phosphate ester type flame retardant is tris (2,4,6-tribromophenyl) phosphate, tris (2,4-dibromophenyl) phosphate, tris (4-bromophenyl) phosphate, etc. is there. Specifically, the aromatic phosphate ester flame retardant is triphenyl phosphate, tris (2,6-xylyl) phosphate, tetrakis (2,6-xylyl) resorcin diphosphate, tetrakis (2,6-xylyl) hydroquinone diphosphate. , Tetrakis (2,6-xylyl) -4,4′-biphenol diphosphate, tetraphenylresorcin diphosphate, tetraphenylhydroquinone diphosphate, tetraphenyl-4,4′-biphenol diphosphate, aromatic ring source is resorcin and phenol Aromatic polyphosphates that do not contain phenolic OH groups, aromatic ring sources are resorcin and phenol, aromatic polyphosphates that contain phenolic OH groups, aromatic ring sources are hydroquinone and phenol, and are phenolic Aromatic polyphosphates containing no H groups, aromatic polyphosphates containing similar phenolic OH groups, ("Aromatic polyphosphates" shown below are aromatic polyphosphates containing phenolic OH groups and aromatic polyphosphates not containing Aromatic polyphosphates whose aromatic ring sources are bisphenol A and phenol, aromatic polyphosphates whose aromatic ring source is tetrabromobisphenol A and phenol, aromatic ring sources are resorcin and 2 , 6-xylenol aromatic polyphosphate, aromatic polyphosphates whose aromatic ring sources are hydroquinone and 2,6-xylenol, aromatic polyphosphates whose aromatic ring sources are bisphenol A and 2,6-xylenol, aromatic rings The source is tetrabromobisph Aromatic polyphosphates such a Nord A and 2,6-xylenol.
[0061]
Among these flame retardants, the polycarbonate-type flame retardant of halogenated bisphenol A is preferably a polycarbonate-type flame retardant of tetrabromobisphenol A, a copolymer polycarbonate of tetrabromobisphenol A and bisphenol A, and more preferably tetrabromobisphenol A. Polycarbonate flame retardants are preferred. As the organic salt flame retardant, diphenyl sulfone-3,3′-disulfonate dipotassium, diphenylsulfone-3-sulfonate potassium and sodium 2,4,5-trichlorobenzenesulfonate are preferable. Aromatic phosphate ester flame retardants include triphenyl phosphate, tricresyl phosphate, cresyl diphenyl phosphate, resulcinol bis (dixylenyl phosphate), bis (2,3 dibromopropyl) phosphate, tris (2,3 Dibromopropyl) phosphate is preferred. Of these, triphenyl phosphate, tricresyl phosphate, and resulcinol bis (dixylenyl phosphate) which are aromatic phosphate ester flame retardants that do not destroy the ozone layer are most preferable.
[0062]
The thermoplastic resin composition of the present invention can be blended with other resins as long as the object of the present invention is not impaired.
[0063]
Examples of such other resins include polyamide resins, polyimide resins, polyetherimide resins, polyurethane resins, polyphenylene ether resins, polyphenylene sulfide resins, polysulfone resins, polyolefin resins such as polyethylene and polypropylene, polystyrene resins, acrylonitrile / styrene copolymer. Examples thereof include resins such as coalescence (AS resin), acrylonitrile / butadiene / styrene copolymer (ABS resin), polymethacrylate resin, phenol resin, and epoxy resin.
[0064]
Arbitrary methods are employ | adopted in order to manufacture the thermoplastic resin composition of this invention. For example, a method of mixing with a tumbler, a V-type blender, a super mixer, a nauter mixer, a Banbury mixer, a kneading roll, an extruder, or the like is appropriately used. The thermoplastic resin composition thus obtained can be made into a molded product by a generally known method such as an injection molding method, an extrusion molding method, a compression molding method or the like once as it is or after being once pelletized with a melt extruder. . In order to increase the miscibility of the thermoplastic resin composition of the present invention and obtain stable release properties and physical properties, it is preferable to use a twin screw extruder in melt extrusion. Furthermore, when blending inorganic fillers, a method of directly feeding from the extruder hopper port or in the middle of the extruder, a method of pre-mixing with an aromatic polycarbonate resin or an aromatic polyester resin, a part of the aromatic polycarbonate resin or aromatic polyester Either a method of mixing and preliminarily mixing with a resin to prepare a master and a method of charging such a master from the middle of an extruder can be employed.
[0065]
The thermoplastic resin composition of the present invention thus obtained includes housings and chassis for OA equipment such as personal computers, word processors, fax machines, copiers, printers, CD-ROM trays, chassis, turntables, pickup chassis, various gears, etc. OA internal parts, housings and parts for home appliances such as TVs, videos, electric washing machines, electric dryers, vacuum cleaners, electric tools such as electric saws, electric drills, telescope barrels, microscope barrels, camera bodies It is useful for optical parts such as camera housings and camera barrels, and automotive parts such as door handles, pillars, bumpers, and instrument panels. It is particularly useful for automobile parts (outer door handles, inner door handles, etc.) and machine parts (power tool covers, etc.) that require mechanical strength, chemical resistance, wet heat fatigue, and the like.
[0066]
【Example】
Examples will be described further below. In the examples, “parts” or “%” represents parts by weight or% by weight, and the evaluation items and symbols of each component in the composition mean the following contents.
[0067]
(1) Residual catalyst activity index
The amount of residual catalyst activity was measured as follows. Before the measurement, the sample was dried under reduced pressure at 120 ° C. for 4 hours and subjected to measurement. Using a RDA-II viscoelasticity measuring instrument manufactured by Rheometrics Co., Ltd. as a measuring instrument, wearing a conical disk-shaped jig with a diameter of 25 mm, and in a nitrogen stream satisfying the appropriate conditions of the instrument being measured The measurement temperature was set to 270 ° C. The measurement temperature was set by measuring the temperature in the oven. After that, set the dried sample for measurement, and let it stand so that the entire sample is at the measurement temperature. Then, start the measurement by rotating it at an angular velocity of 1 rad / sec, and continue this for 30 minutes. The change in viscosity was observed. From this measurement, the melt viscosities after 5 minutes and 30 minutes after the start of rotation were obtained, and those values were calculated from the following formula (i) to express the change in melt viscosity per minute as the residual catalyst activity index.
[0068]
[Expression 2]

[0069]
(2) Terminal hydroxyl group concentration
0.02 g of the sample was dissolved in 0.4 ml of chloroform, and the terminal hydroxyl group and the terminal phenyl group were measured using 1H-NMR (EX-270 manufactured by JEOL Ltd.) at 20 ° C., and the terminal hydroxyl group was determined by the following formula (ii). Concentration was measured.
Terminal hydroxyl group concentration (mol%) = (number of terminal hydroxyl groups / total number of terminals) × 100 (ii)
[0070]
(3) Wet heat fatigue
Using the so-called C-type measurement sample shown in FIG. 1, the following fatigue tester [Shimadzu Corporation] under the conditions of 80 ° C., 90% RH, sine wave, 1 Hz frequency and maximum load of 2 kg Shimadzu servo pulsar EHF-EC5 type manufactured by Seisakusho was used to measure the number of times until the measurement sample broke.
[0071]
(4) Rigidity
The flexural modulus was measured according to ASTM D790.
[0072]
(5) Chemical resistance
A tensile test piece used in ASTM D638 was strained by 1%, immersed in essoregular gasoline at 30 ° C. for 3 minutes, the tensile strength was measured, and the retention rate was calculated. The retention rate was calculated by the following formula.
Retention rate (%) = (strength of treated sample / strength of untreated sample) × 100
[0073]
(6) Impact value with notch
Using a test piece having a thickness of 3.2 mm according to ASTM D256, the weight was impacted from the notch side, and the impact value was measured.
[0074]
(7) Heat resistance
According to JIS K7207, method A (bending stress applied to the test piece: 18.5 kgf / cm²) And the deflection temperature under load was measured.
[0075]
(A) Aromatic polycarbonate resin
(1) EX-PC
[Reference Example 1] Production of aromatic polycarbonate resin of the present invention
In a reactor equipped with a stirrer and a distillation column, 228 parts (about 1 mol) of 2,2-bis (4-hydroxyphenyl) propane, 220 parts (about 1.03 mol) of diphenyl carbonate (manufactured by Bayer) and a catalyst 0.0000 part of sodium hydroxide (approximately 6 × 10^-7Mol / bisphenol A 1 mol) and tetramethylammonium hydroxide 0.0073 part (about 8 × 10^-FiveMol / bisphenol A 1 mol) was charged and the atmosphere was replaced with nitrogen. The mixture was heated to 200 ° C. and dissolved with stirring. Next, most of the phenol was distilled off in 1 hour while heating at a reduced pressure of 30 Torr, the temperature was further raised to 270 ° C., and the polymerization reaction was carried out for 2 hours at a reduced pressure of 1 Torr. 3.1 parts of carbonylphenyl phenyl carbonate was added. Thereafter, end-capping reaction was carried out at 270 ° C. and 1 Torr or less for 5 minutes. Next, in the molten state, 0.0035 parts of dodecylbenzenesulfonic acid tetrabutylphosphonium salt (about 6 × 10^-6The reaction was continued at 270 ° C. and 10 Torr or less to obtain an aromatic polycarbonate resin having a viscosity average molecular weight of 23300, a terminal hydroxyl group concentration of 5 mol%, and a residual catalyst activity index of 0.01%. This aromatic polycarbonate resin was sent to the extruder with a gear pump. In the middle of the extruder, 0.003% by weight of trisnonylphenyl phosphite and 0.05% by weight of trimethyl phosphate were added to obtain aromatic polycarbonate resin pellets.
[0076]
(2) CEX-PC
[Reference Example 2] Production of aromatic polycarbonate resin for comparison
An aromatic polycarbonate resin was produced under the same conditions as in Reference Example 1 except that 2-methoxycarbonylphenylphenyl carbonate as a terminal stopper and tetrabutylphosphonium dodecylbenzenesulfonate as a catalyst deactivator were not used. The aromatic polycarbonate resin had a viscosity average molecular weight of 23,000, a terminal hydroxyl group concentration of 52 mol%, and a residual catalyst activity index of 2.5.
[0077]
(B) Aromatic polyester resin
(1) Polyethylene terephthalate: TR-8580; manufactured by Teijin Limited, intrinsic viscosity 0.8 (hereinafter referred to as PET)
(2) Polybutylene terephthalate: TRB-H; manufactured by Teijin Limited, intrinsic viscosity 1.07 (hereinafter referred to as PBT)
[0078]
(C) Rubber elastic body
(1) Butadiene-alkyl acrylate-alkyl methacrylate copolymer
: EXL-2602; Kureha Chemical Industry Co., Ltd. (hereinafter referred to as E-1)
(2) Composite rubber in which a polyorganosiloxane component and a polyalkyl (meth) acrylate rubber component have an interpenetrating network structure: S-2001; manufactured by Mitsubishi Rayon Co., Ltd. (hereinafter referred to as E-2)
[0079]
(D) Inorganic filler
(1) Glass fiber: Chopped strand ECS-03T-511; manufactured by Nippon Electric Glass Co., Ltd., urethane bundling treatment, fiber diameter 13 μm. (Hereafter referred to as G)
(2) Wollastonite: Psycatech NN-4; manufactured by Sakai Kogyo Co., Ltd., average particle size D = 4 μm, particle system distribution of 3 μm or more is 82.5%, and particle system distribution of 10 μm or more is 0.7%, Aspect ratio L / D = 20 (hereinafter referred to as W)
(3) Talc: P-3; Nippon Talc Co., Ltd. (hereinafter referred to as T)
[0080]
(E) Olefinic wax containing carboxyl group and / or carboxylic anhydride group
(1) Olefin-based wax by copolymerization of α-olefin and maleic anhydride: Diacarna-PA30; manufactured by Mitsubishi Kasei Co., Ltd. (maleic anhydride content = 10 wt%) (hereinafter referred to as WAX)
[0081]
[Examples 1 to 16, Comparative Examples 1 to 8]
The aromatic polycarbonate resin obtained above and the components and phosphorus stabilizers listed in Tables 1, 2 and 3 (cyclic neopentanetetraylbis (octadecyl phosphite): PEP-8 manufactured by Asahi Denka Kogyo Co., Ltd.) After uniformly mixing 0.1 parts by weight using a tumbler, it was deaerated with a 30 mmφ vented twin screw extruder (KTX-30 manufactured by Kobe Steel) at a cylinder temperature of 260 ° C and a vacuum of 10 mmHg. The pellets obtained were pelletized while being dried at 120 ° C. for 5 hours, and then using an injection molding machine (SG150U model manufactured by Sumitomo Heavy Industries, Ltd.) under the conditions of a cylinder temperature of 260 ° C. and a mold temperature of 70 ° C. A molded piece for measurement was prepared.
[0082]
As is apparent from the respective comparisons, the thermoplastic resin composition comprising an aromatic polycarbonate resin having a residual catalyst activity index and an aromatic polyester resin, which is an example of the present invention, is an aromatic resin in which the residual catalyst activity of the comparative example remains. It can be seen that the wet heat fatigue is particularly excellent as compared with the one using the polycarbonate resin, and the chemical resistance and the impact strength are also excellent.
[0083]
[Table 1]

[0084]
[Table 2]

[0085]
[Table 3]

[0086]
[Examples 17 to 28, Comparative Examples 9 to 16]
The aromatic polycarbonate resin obtained above and the components and phosphorus stabilizers listed in Tables 4, 5, and 6 (cyclic neopentanetetraylbis (octadecylphosphite): PEP-8 manufactured by Asahi Denka Kogyo Co., Ltd.) After 0.1 part by weight was uniformly mixed using a tumbler, a measurement molded piece was prepared in the same manner as in Example 1 below.
[0087]
Tables 4 and 5 show that the thermoplastic resin composition of the present invention is blended with inorganic fillers such as glass fiber, wollastonite, and talc to maintain chemical resistance and impact strength while further improving rigidity and wet heat fatigue. It can be seen that it is improved and preferable. Further, even if an inorganic filler is blended in a thermoplastic resin composition comprising an aromatic polycarbonate resin and an aromatic polyester resin using an aromatic polycarbonate resin in which the remaining catalytic activity of the comparative examples shown in Table 6 remains, wet heat It can be seen that the improvement effect of the present invention is large because the effect of improving fatigue is small, and the impact strength and chemical resistance are also low.
[0088]
[Table 4]

[0089]
[Table 5]

[0090]
[Table 6]

[0091]
【The invention's effect】
According to the present invention, a thermoplastic resin composed of an aromatic polycarbonate resin and an aromatic polyester resin, which is superior in wet heat fatigue, taking advantage of the chemical resistance and other properties inherent in the resin composition comprising an aromatic polycarbonate resin and an aromatic polyester resin. It is possible to provide a resin composition.
[Brief description of the drawings]
FIG. 1 is a front view of a so-called C-type sample used for evaluating wet heat fatigue. The thickness of the sample is 3 mm. A jig of a testing machine is passed through the hole portion indicated by reference numeral 6 and a test is performed by applying a predetermined load in the vertical direction indicated by reference numeral 7.
[Explanation of symbols]
1 Center of C-shaped double circle
2 Radius of inner circle of double circle (20mm)
3 Radius of outer circle of double circle (30mm)
4 Center angle (60 °) indicating the position of the jig mounting hole
5 Sample end face gap (13mm)
6 Jig mounting hole (circle with a diameter of 4 mm, located at the center of the sample width)
7 Direction of load imposed on sample during fatigue test

Claims (5)

(A) An aromatic obtained by reacting a dihydric phenol and a carbonate precursor by a melting method with a residual catalyst activity index of 2% or less, a hydroxyl group terminal of 0 to 40% by mole with respect to all terminals. A thermoplastic resin composition comprising 5 to 95% by weight of a polycarbonate resin and (B) 95 to 5% by weight of an aromatic polyester resin.   The thermoplastic resin composition according to claim 1, wherein the carbonate precursor is diphenyl carbonate.   The thermoplastic resin composition according to claim 1, wherein the aromatic polyester resin is polyethylene terephthalate or polyethylene naphthalate using ethylene glycol.   The thermoplastic resin composition according to claim 1, wherein the aromatic polyester resin is polybutylene terephthalate or polybutylene naphthalate using butylene glycol. A residual catalyst obtained by a method in which a dihydric phenol and a carbonate precursor are melt-reacted using a polymerization catalyst comprising an alkali metal compound and / or a nitrogen-containing basic compound, and a deactivator is added after the completion of the polymerization reaction. Melting and mixing 5 to 95% by weight of an aromatic polycarbonate resin having an activity index of 2% or less and a hydroxyl group terminal of 0 to 40 mol% with respect to all terminals, and 95 to 5% by weight of an aromatic polyester resin. A method for producing a thermoplastic resin composition.

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