BLOCK COPOLYMER

PROBLEM TO BE SOLVED: To provide a block copolymer giving a molded article having good mechanical properties and transparency. SOLUTION: The block copolymer is composed of a polymer block composed mainly of a vinyl aromatic hydrocarbon and a polymer block composed mainly of a conjugated diene and sa...

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Bibliographische Detailangaben
Hauptverfasser:	SHU SHINAN, SHO KOYO
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a block copolymer giving a molded article having good mechanical properties and transparency. SOLUTION: The block copolymer is composed of a polymer block composed mainly of a vinyl aromatic hydrocarbon and a polymer block composed mainly of a conjugated diene and satisfies the following condition (1), etc. (1) The block copolymer is a linear block copolymer having a polymer structure expressed by general formulae A1-B1-A2-B2-A3, A1-B1-A2-B2-A3-R or A1-B1-A2-B2-A3-B3-A4 (A1, A2, A3 and A4 are each a polymer block composed mainly of a vinyl aromatic hydrocarbon; B1, B2 and B3 are each a polymer block composed mainly of a conjugated diene; and R is a copolymer block of the vinyl aromatic hydrocarbon and the conjugated diene provided that the content of the conjugated diene in R is higher than the content of the conjugated diene in A3). COPYRIGHT: (C)2005,JPO&NCIPI