POLYCARBONATE RESIN COMPOSITION

To provide a polycarbonate resin composition capable of forming a molded product excellent in transparency and surface hardness.SOLUTION: A polycarbonate resin composition comprises (A) 50-95 mass% of a polycarbonate resin comprising a polycarbonate-polyorganosiloxane copolymer with a viscosity-aver...

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1. Verfasser:	KATANO HIROTOMO
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	To provide a polycarbonate resin composition capable of forming a molded product excellent in transparency and surface hardness.SOLUTION: A polycarbonate resin composition comprises (A) 50-95 mass% of a polycarbonate resin comprising a polycarbonate-polyorganosiloxane copolymer with a viscosity-average molecular weight of 10,000-40,000 which has a polycarbonate block including a repeating a unit represented by a general formula (I) and a polyorganosiloxane block including a repeating unit represented by a general formula (II), and (B) 5-50 mass% of a polymer comprising a methyl methacrylate unit with a weight-average molecular weight of 5000-30000.SELECTED DRAWING: None 【課題】透明性と表面硬度が良い成形体が得られるポリカーボネート系樹脂組成物の提供。【解決手段】(A)一般式（I）で表される繰り返し単位を含むポリカーボネートブロックと、一般式（II）で表される繰り返し単位を含むポリオルガノシロキサンブロックとを有する、粘度平均分子量が10,000〜40,000であるポリカーボネート−ポリオルガノシロキサン共重合体からなるポリカーボネート系樹脂50〜95質量％、(B)重量平均分子量5000〜30000のメチルメタクリレート単位を含む重合体５〜50質量％を含有するポリカーボネート系樹脂組成物。【化１】【選択図】なし