PROBLEM TO BE SOLVED: To provide a vinyl aromatic compound-conjugated diene block copolymer rubber capable of improving appearance of a vinyl aromatic compound-based resin, and excellent in bale formability, bale operability, bale friability and bale solubility.;SOLUTION: There is provided a vinyl aromatic compound-conjugated diene block copolymer rubber containing a vinyl aromatic compound unit and a conjugated diene unit, and (a) the content of the vinyl aromatic compound unit is 28 to 45 mass%, (b) a peak top molecular weight of 100,000 to 500,000, (c) it has at least one vinyl aromatic compound block, (d) an apparent density with a bale shape (weight of bale/volume of bale) is 0.6 to 0.85 and (e) a bend elastic constant with the bale shape at 10°C is 5 to 20 kgf/cm2.;COPYRIGHT: (C)2015,JPO&INPIT
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机译：解决的问题：提供一种乙烯基芳族化合物-共轭二烯嵌段共聚物橡胶，该橡胶能够改善乙烯基芳族化合物-基树脂的外观，并且在成捆性，成捆操作性，成捆脆性和成捆溶解性方面优异。提供一种含有乙烯基芳香族化合物单元和共轭二烯单元的乙烯基芳香族化合物共轭二烯嵌段共聚物橡胶，（a）乙烯基芳香族化合物单元的含量为28〜45质量％，（b）峰顶分子量100,000至500,000，（c）具有至少一个乙烯基芳族化合物嵌段，（d）打包形状的表观密度（打包重量/打包体积）为0.6到0.85，并且（e）弯曲弹性常数为打包温度为10°C时的棉包形状为5至20 kgf / cm 2 .;版权：（C）2015，JPO＆INPIT
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