Polymerization-active transition metal complexes having...

Details Polymerization-active transition metal complexes having... Polymerization-active transition metal complexes having...

2005-07-12

2005-07-12

Lu, Caixia (Department: 1713)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S172000, C526S165000, C526S169100, C502S103000, C502S169000, C548S108000, C548S416000

Reexamination Certificate

active

06916893

ABSTRACT:
Transition metal complexes having bulky ligand systems and the formula (I)whereR2, R4are C4-C16-heteroaryl or C6-C16-aryl bearing C4-C16-heteroaryl or C6-C16-aryl substituents in the two vicinal positions relative to the point of linkage to Naor NbandM is a metal of group VIIIB of the Periodic Table of the Elements,are described.

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Brintzinger et al. Angew. Chem. Int. Ed. Engl. 34 1143-1170 (1995): “Stereospecific Olefin Poly-merisation with Chiral Metallocene Catalysts”.
Johnson et al. J. Am. Chem. Soc. 117, 4614-4615 (1995): “New Pd(II)-and Ni(II)-Based Cata-lysts for Polymerization of Ethylene and α-Olefins”.
Johnson et al. J. Am. Chem. Soc. 118, 267-268 (1996): “Copolymerization of Ethylene and Pro-pylene with Functionalized Vinyl Monomers by Palladium(II)Catalysts”.
Hausmann et al.KUKunststoffe 89(9), 154-162 (1999): “Elastisch und schlagfest—Schlagzäh-Modifikatoren für technische Kunststoffe”.

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