Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Reissue Patent
2005-03-04
2009-06-16
Rábago, Roberto (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
C526S127000, C526S129000, C526S134000, C526S943000, C502S117000, C502S152000
Reissue Patent
active
RE040751
ABSTRACT:
The present invention relates to a process for the polymerization of monomers utilizing a bulky ligand hafnium transition metal metallocene-type catalyst compound, to the catalyst compound itself and to the catalyst compound in combination with an activator. The hafnocene comprises at least one cyclopentadienyl ligand including at least one linear or isoalkyl substituent of at least 3 carbon atoms.
REFERENCES:
patent: 4927797 (1990-05-01), Ewen
patent: 5218071 (1993-06-01), Tsutsui et al.
patent: 5281679 (1994-01-01), Jejelowo et al.
patent: 5324800 (1994-06-01), Welborn, Jr. et al.
patent: 5387660 (1995-02-01), Doyle et al.
patent: 5416228 (1995-05-01), Ewen et al.
patent: 5541272 (1996-07-01), Schmid et al.
patent: 5602067 (1997-02-01), Nowlin et al.
patent: 5608019 (1997-03-01), Cheruvu et al.
patent: 5621054 (1997-04-01), Harrington
patent: 5688735 (1997-11-01), Ewen et al.
patent: 5714426 (1998-02-01), Tsutsui et al.
patent: 5763543 (1998-06-01), Muhle et al.
patent: 5767208 (1998-06-01), Turner et al.
patent: 5789332 (1998-08-01), Kutschera et al.
patent: 6242545 (2001-06-01), Jejelowo et al.
patent: 6248845 (2001-06-01), Loveday et al.
patent: 6528597 (2003-03-01), Loveday et al.
patent: 6800704 (2004-10-01), Floyd et al.
patent: 0481480 (1992-04-01), None
patent: 481 480 (1992-04-01), None
patent: 0495099 (1992-07-01), None
patent: 0 495 099 (1992-07-01), None
patent: 0596553 (1994-05-01), None
patent: 0612768 (1994-08-01), None
patent: 612768 (1994-08-01), None
patent: 612768 (1994-08-01), None
patent: 0 284 707 (1995-08-01), None
patent: 0284707 (1995-08-01), None
patent: 0 316 155 (1996-02-01), None
patent: 0773239 (1997-05-01), None
patent: 0781789 (1997-07-01), None
patent: 0773239 (2001-12-01), None
patent: 07-252267 (1995-10-01), None
patent: 07-330820 (1995-12-01), None
patent: WO 94/03509 (1994-02-01), None
patent: WO 95/11263 (1995-04-01), None
patent: WO 98/02470 (1998-01-01), None
Hawley's Condensed Chemical Dictionary, 13thEdition, John Wiley & Sons, p. 34, 1997.
Tian et al., Macromol. Rapid Commun. 15 (1994) pp. 923-928.
Journal of Molecular Catalysis A:Chemical 200 (2003) (323-332), N. I. Makela-Vaame, et al.
Kirstin Heiland, Walter Kaminsky,Comparison on zirconocene and hafnocene catalysts for the polymerization of ethylene and 1-butene,Makromol. Chem. 193, 601-610 (1992).
Jun Tian, Baotong Huang,Ethylene polymerization with catalyst systems based on metallocenes with varying steric hindrance and methylaluminoxane,Macromol Rapid Commun. 15, 923-928 (1994).
Jejelowo Moses O.
Kao Sun-Chueh
Rábago Roberto
Univation Technologies LLC
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