发明申请
US20080255311A1 Propylene-Based Elastomeric Composition 有权
丙烯弹性组合物

  • 专利标题: Propylene-Based Elastomeric Composition
  • 专利标题(中): 丙烯弹性组合物
  • 申请号: US12088785
    申请日: 2006-10-31
  • 公开(公告)号: US20080255311A1
    公开(公告)日: 2008-10-16
  • 发明人: Andy C. ChangThomas G. Pressly
  • 申请人: Andy C. ChangThomas G. Pressly
  • 国际申请: PCT/US06/42447 WO 20061031
  • 主分类号: C08L23/12
  • IPC分类号: C08L23/12
Propylene-Based Elastomeric Composition
摘要:
The present invention includes a polyolefin elastomeric composition comprising a propylene-based elastomer having at least seventy five weight percent units derived from propylene, the propylene-based elastomer exhibiting a heat of fusion of from 1 to 35 Joules/gram, a weight average molecular weight of from 5400 to 875000 g/mol, and a permanent set of less than 40%; and a homogeneous ethylene-alpha olefin interpolymer having a molecular weight distribution of less than 3.5, a density from 0.885 to 0.915 g/ml, and a heat of fusion of from 65 to 125 Joules/gram, wherein the ratio of the propylene-based elastomer to the homogeneous ethylene-alpha olefin interpolymer is from 97:3 to 80:20, and wherein the composition exhibits a heat of fusion from 2 to 55 Joules/gram, and a 2% secant flexural modulus of less than 69 MPa.
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