Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1993-09-10
1994-09-27
Schofer, Joseph L.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
526118, 526127, 526153, 526160, 526352, 502117, 502155, C08F 464
Patent
active
053508173
ABSTRACT:
Polyolefins having a molecular weight distribution M.sub.w /M.sub.n of .gtoreq.3 and which may be monomodal, bimodal or multimodal are obtained by polymerization or copolymerization of olefins of the formula RCH.dbd.CHR, in which a catalyst system comprising an aluminoxane and a transition-metal component (metallocene) is used, the transition-metal component comprising at least one zirconocene of the formula I ##STR1## and at least one zirconocene of the formula Ia or alternatively at least 2 zirconocenes of the formula I.
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patent: 4975403 (1990-12-01), Ewen
patent: 5001205 (1991-03-01), Hoel
Giannetti, E., et al., J. of Polymer Science: Polymer Chem. Ed. 23:2117-2134 (1985).
Dolle Volker
Spaleck Walter
Winter Andreas
Hoechst AG
Schofer Joseph L.
Wu David
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