| 摘要 |
PURPOSE:To obtain a high-impact styrene resin composition improved in impact resistance and reduced in the anisotropy of mechanical strengths otherwise forming during extrusion. CONSTITUTION:This composition comprises 65-85wt.% nonrubbermodified styrene polymer, 3-18wt.% block copolymer comprising a conjugated diolefin and a vinyl-substituted aromatic compound and having a content of the vinyl- substituted aromatic compound of 65-90wt.%, 2-8wt.% block copolymer comprising a conjugated diolefin and a vinyl-substituted aromatic compound and having a content of the vinyl-substituted aromatic compound of 15-50wt.% and 1 to below 10wt.% high-impact rubber-modified styrene polymer having a mean rubber particle diameter of 0.2-4.0mum and a content of the elastomer of 3-15wt.%. |
