The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 16, 2002
Filed:
Dec. 09, 1994
Helmut G. Alt, Bayreuth, DE;
Syriac J. Palackal, Bartlesville, OK (US);
Konstantinos Patsidis, Bayreuth, DE;
M. Bruce Welch, Bartlesville, OK (US);
Rolf L. Geerts, Bartlesville, OK (US);
Eric T. Hsieh, Bartlesville, OK (US);
Max P. McDaniel, Bartlesville, OK (US);
Gil R. Hawley, Dewey, OK (US);
Paul D. Smith, Seabrook, TX (US);
Phillips Petroleum Company, Bartlesville, OK (US);
Abstract
Bridged and unbridged fluorenyl-containing metallocenes of the formula R″ (FlR )(CpR )MQ wherein Fl is a fluorenyl radical, Cp is a cyclopentadienyl, indenyl, tetrahydroindenyl, or fluorenyl radical, each R is an organo radical, R″ is a structural bridge linking (FlR ) and (CpR ), M is a metal selected from the group consisting of IVB, VB, and VIB metals, each Q is selected from the group consisting of hydrocarbyl or hydrocarbyloxy radicals and halogen, x is 1 or 0, k is an integer sufficient to fill out the remaining valences of M, n is in the range of 0 to 7, and m is 0 to 7, further characterized by the fact that if (CpR ) is unsubstituted fluorenyl and metallocene is an unbridged metallocene, then n is 1 to 7 and if R″ is 1,1-dimethylmethylene and (CpR ) is unsubstituted cyclopentadienyl or 3-methylcyclopentadienyl, then n is 1 to 7.