发明授权
US06395832B1 Polyolefin composition having a high balance of stiffness and impact strength
有权
具有高刚度和冲击强度平衡的聚烯烃组合物
- 专利标题: Polyolefin composition having a high balance of stiffness and impact strength
- 专利标题(中): 具有高刚度和冲击强度平衡的聚烯烃组合物
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申请号: US09582599申请日: 2000-06-28
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公开(公告)号: US06395832B1公开(公告)日: 2002-05-28
- 发明人: Anteo Pelliconi , Giovanni Galetti , Paolo Ferrari
- 申请人: Anteo Pelliconi , Giovanni Galetti , Paolo Ferrari
- 优先权: EP98203698 19981103
- 主分类号: C08L2310
- IPC分类号: C08L2310
摘要:
A polyolefin composition comprising (percentage by weight): (A) from 40 to 60% of a broad molecular weight distribution propylene polymer (component A) having a polydispersity index from 5 to 15 and melt flow rate of from 80 to 200 g/10 min (according to ASTM-D 1238, condition L); and (B) from 40 to 60% of a partially xylene-insoluble olefin polymer rubber (component B) containing at least 65% by weight of ethylene; the IVS/IVA ratio between the intrinsic viscosity (IVS) of the portion soluble in xylene of the polyolefin composition at room temperature and the intrinsic viscosity (IVA) of component (A) ranging from 2 to 2.5, both values on intrinsic viscosity being measured in tetrahydronaphthalene at 135° C. Said composition finds application in automotive field.