Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Reexamination Certificate
2006-12-19
2010-02-16
Wu, David (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
C526S116000, C526S151000, C526S148000, C526S153000, C526S142000, C526S904000, C502S113000, C502S118000, C502S125000
Reexamination Certificate
active
07662894
ABSTRACT:
A catalyst composition for polymerizing olefins to polymers having bimodal molecular weight distribution comprises two transition metal-containing metallocene compounds, a magnesium compound, an alcohol, an aluminum containing co-catalyst and a polymeric support. The transition metal in one of the metallocene compounds is zirconium and the transition metal in the second metallocene compound is selected from the group consisting of titanium, vanadium and hafnium. Polyolefin polymers made using the catalyst composition have broad molecular weight distributions and are useful in film and blow molding applications.
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Abu-Raqabah Atieh
Hamed Orass
Moman Akhlaq
Lee Rip A.
Saudi Bosic Industries Corporation
Spatz William J.
Wheelington Jim
Wu David
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