Metallocene compounds

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

Reexamination Certificate

active

07842764

ABSTRACT:
A bridged metallocene compound of formula (I) wherein: M is an atom of a transition metal; X, is a hydrogen atom, a halogen atom, or a hydrocarbon-based group; R1 is a C1-C40 hydrocarbon radical; R2 and R3, form together a condensed 3-7 membered ring; R4 is a hydrogen atom or a C1-C40 hydrocarbon radical; W is an aromatic 5 or 6 membered ring.

REFERENCES:
patent: 4178272 (1979-12-01), Meyer, Jr. et al.
patent: 5698487 (1997-12-01), Sacchetti et al.
patent: 5770664 (1998-06-01), Okumura et al.
patent: 5770753 (1998-06-01), Küber et al.
patent: 5786432 (1998-07-01), Küber et al.
patent: 5840644 (1998-11-01), Küber et al.
patent: 6051727 (2000-04-01), Küber et al.
patent: 6242544 (2001-06-01), Küber et al.
patent: 6255506 (2001-07-01), Küber et al.
patent: 6306996 (2001-10-01), Cecchin et al.
patent: 6399533 (2002-06-01), Sacchetti et al.
patent: 6444833 (2002-09-01), Ewen et al.
patent: 6492539 (2002-12-01), Bingel et al.
patent: 6559252 (2003-05-01), Horton et al.
patent: 6608224 (2003-08-01), Resconi et al.
patent: 6635779 (2003-10-01), Ewen et al.
patent: 6841501 (2005-01-01), Resconi et al.
patent: 6878786 (2005-04-01), Resconi et al.
patent: 6949614 (2005-09-01), Schottek et al.
patent: 6953829 (2005-10-01), Kratzer et al.
patent: 6963017 (2005-11-01), Bingel et al.
patent: 7038070 (2006-05-01), Bingel et al.
patent: 7053160 (2006-05-01), Bingel et al.
patent: 7101940 (2006-09-01), Schottek et al.
patent: 7112638 (2006-09-01), Nifant'ev et al.
patent: 7141527 (2006-11-01), Van Baar et al.
patent: 7141637 (2006-11-01), Elder et al.
patent: 7314903 (2008-01-01), Resconi et al.
patent: 2003/0149199 (2003-08-01), Schottek et al.
patent: 2004/0132612 (2004-07-01), Resconi et al.
patent: 2006/0020096 (2006-01-01), Schottek et al.
patent: 2006/0052553 (2006-03-01), Resconi et al.
patent: 2006/0235173 (2006-10-01), Resconi
patent: 2007/0155919 (2007-07-01), Okumura et al.
patent: 2007/0260023 (2007-11-01), Jones et al.
patent: 2007/0276095 (2007-11-01), Resconi et al.
patent: 19917985 (2000-10-01), None
patent: 19962814 (2001-06-01), None
patent: 19962910 (2001-07-01), None
patent: 172961 (1986-03-01), None
patent: 576970 (1994-01-01), None
patent: 633272 (1995-01-01), None
patent: 775707 (1997-05-01), None
patent: 1575894 (1980-10-01), None
patent: 938491 (1999-09-01), None
patent: 4016851 (1992-01-01), None
patent: 4016853 (1992-01-01), None
patent: 4016854 (1992-01-01), None
patent: 4031868 (1992-02-01), None
patent: 91/02012 (1991-02-01), None
patent: 92/00333 (1992-01-01), None
patent: 95/32995 (1995-12-01), None
patent: 98/40331 (1998-09-01), None
patent: 99/21899 (1999-05-01), None
patent: 99/45043 (1999-09-01), None
patent: 00/31090 (2000-06-01), None
patent: 01/21674 (2001-03-01), None
patent: 01/44318 (2001-06-01), None
patent: 01/47939 (2001-07-01), None
patent: 01/48034 (2001-07-01), None
patent: 01/62764 (2001-08-01), None
patent: 02/102811 (2002-12-01), None
patent: 03/045964 (2003-06-01), None
patent: 03/050131 (2003-06-01), None
patent: 2004/005360 (2004-01-01), None
patent: 2004/050724 (2004-06-01), None
patent: 2004/099269 (2004-11-01), None
patent: 2005/023889 (2005-03-01), None
patent: 2005/058916 (2005-06-01), None
patent: 2005/095468 (2005-10-01), None
patent: 2005/095473 (2005-10-01), None
patent: 2005/095474 (2005-10-01), None
patent: 2005/118654 (2005-12-01), None
patent: 2006/097500 (2006-09-01), None
patent: 2006/100258 (2006-09-01), None
patent: 2006/100269 (2006-09-01), None
patent: 2006/117285 (2006-11-01), None
patent: 2006/120177 (2006-11-01), None
C. Carman et al., “Monomer Sequence Distribution in Ethylene-Propylene Rubber Measured by13C NMR. 3. Use of Reaction Probability Model,”Macromolecules, vol. 10(3), pp. 536-544 (1977).
M. Kakugo et al., “13C NMR Determination of Monomer Sequence Distribution in Ethylene-Propylene Copolymers Prepared with δ-TiCl3-Al(C2H5)2Cl,”Macromolecules, vol. 15(4), pp. 1150-1152 (1982).
A. Rossi et al., “End Groups in l-Butene Polymerization via Methylaluminoxane and Zirconocene Catalyst,”Macromolecules, vol. 28(6), pp. 1739-1749 (1995).
N. Naga et al., “Effect of co-catalyst system on α-olefin polymerization withrac- andmeso-[dimethylsilylenebis(2,3,5-trimethyl-cyclopentadienyl)]zirconium dichloride,”Macromol. Rapid. Commun., vol. 18, pp. 581-589 (1997).
L. Resconi et al., “C1-Symmetric Heterocyclic Zirconocenes as Catalysts for Propylene Polymerization, 2;ansa-Zirconocenes with Linked Dithienocyclopentadienyl-Substituted Indenyl Ligands,”Marcomol. Chem. Phys., vol. 206, pp. 1405-1438 (2005).
C. Cobzaru et al., “Novel High and Ultrahigh Molecular Weight Poly(propylene) Plastomers by Asymmetric Hafnocene Catalysts,”Macromol Chem. Phys., vol. 206, pp. 1231-1240 (2005).
L. Resconi et al., “Selectivity in Propane Polymerization with Metallocene Catalysts,”Chem. Rev., vol. 100(4), pp. 1253-1345 (2000).

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Metallocene compounds does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Metallocene compounds, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Metallocene compounds will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4251882

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.