| 摘要 |
PURPOSE:To obtain a styrene polymer composition improved in impact resistance and reduced in the anisotropy of mechanical strengths otherwise forming during extrusion. CONSTITUTION:This composition comprises 20-70wt.% nonrubber-modified styrene polymer, 30-70wt.% 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.%, 1-4wt.% 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 1-20wt.% 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.%. |
