发明授权
- 专利标题: Propylene polymer compositions and processes for making the same
- 专利标题(中): 丙烯聚合物组合物及其制备方法
-
申请号: US11485227申请日: 2006-07-12
-
公开(公告)号: US07977435B2公开(公告)日: 2011-07-12
- 发明人: Chon-Yie Lin , Stephen Francis Broadbent
- 申请人: Chon-Yie Lin , Stephen Francis Broadbent
- 主分类号: C08F2/00
- IPC分类号: C08F2/00 ; C08F4/72 ; C08F4/44 ; C08F4/06 ; B01J31/00
摘要:
Provided are a propylene polymer compositions comprising a propylene copolymer and a propylene homopolymer polymerized in the presence of the propylene copolymer. The propylene polymer compositions exhibit properties such as broad molecular weight distribution, low crystallinity, high solubles and superior crystallization kinetics and are useful in fast cycle-time processing methods such as injection molding, sheet extrusion, thermoforming, and oriented film fabrication. Also provided is a process for preparing the propylene polymer compositions in the presence of a catalyst and at least two electron donors using sequential or parallel polymerization reaction zones. Finally, articles made from the propylene polymer composition are provided, particularly articles requiring high stiffness, high heat deflection temperature, good fatigue resistance and low temperature impact resistance such as appliance parts.
公开/授权文献
信息查询