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US 5,962,362 AGranted
Unbridged monocyclopentadienyl metal complex catalyst and a process for polyolefin production
AssigneeUnion Carbide Chemicals & Plastics Technology Corporation
InventorsEric Paul Wasserman, Xinlai Bai, Elizabeth Clair Fox
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Abstract
There is provided a catalyst containing a transition metal precursor having the formula (C.sub.5 R.sup.1.sub.5)MX.sub.3, an alcohol, a substituted bulky phenol, an aluminoxane, and optionally a support or spray drying material. There is also provided a polymerization process employing the catalyst composition, a polymer produced using the catalyst, and a cable produced therefrom.
Claims5
A catalyst comprising:
- (A) a transition metal compound having the formula:
- (C.sub.5 R.sup.1.sub.5)MX.sub.3, wherein each R.sup.1 substituent is independently selected from the group consisting of hydrogen, a C.sub.1 -C.sub.8 alkyl, an aryl, and an aryl or alkyl substituted with an atom other than carbon selected from the group consisting of oxygen, nitrogen, and sulfur, with the proviso that no more than three R.sup.1 substituents are hydrogen;
- and wherein two or more R.sup.1 substituents may be linked together forming a ring;
- M is a transition metal of Group IVB of the Periodic Table of the Elements;
- and X is a halide atom;
- (B) a compound having the formula:
- R.sup.2 OH, wherein R.sup.2 is a C.sub.1 -C.sub.8 alkyl;
- (C) a bulky phenol compound having the formula:
- (C.sub.6 R.sup.3.sub.5)OH, wherein each R.sup.3 group is independently selected from the group consisting of hydrogen, halide, a C.sub.1 -C.sub.8 alkyl, an aryl, a heteroatom substituted alkyl or aryl, wherein two or more R.sup.3 groups may be linked together forming a ring, and in which at least one R.sup.3 is represented by a C.sub.3 -C.sub.12 linear or branched alkyl located at either or both the 2 and 6 position of the bulky phenol compound;
- and
- (D) an aluminoxane.
8 more elements
Dependencies are inferred from the claim text.