Exxonmobil Chemical Patents Inc.

Borealis Ag

Pavel Sergeevich Kulyabin

Alexander Z Voskoboynikov

Dmitry Vadimovich Uborsky

Vyatcheslav V Izmer

Dmitry S Kononovich

Luigi Resconi

Jo Ann M Canich

Ville Virkkunen

Pascal Castro

Georgy Pavlovich Goryunov

Norbert Hafner

Ilya S Borisov

Mikhail I Sharikov

John Robert Hagadorn

Oleg Vladimirovich Samsonov

Alexey A Tsarev

Markus Gahleitner

Arkady K Golenishchev

Jimgbo Wang

Dimitry S Kononovich

Oleg V Samsonov

This invention relates to transition metal complexes represented by the formula: catalyst systems comprising the complexes, and polymerization methods for olefinic monomers using the catalyst systems. In said formula, M is a transition metal; E is NR, CRR, O, S, or SiRR; Q is optional substitution; p is an integer ranging from 0 to 3; L is an optional neutral ligand; m is an integer ranging from 0 to 3; X is an anionic leaving group; n is 1 or 2, with m+n being 4 or less; J is a linker group contributing two or three atoms that are located within a first chelate ring; Rand Rare independently a hydrocarbyl group or a trihydrocarbylsilyl group; Ris a hydrocarbyl group; Rand Rare independently H, a hydrocarbyl group, or a trihydrocarbylsilyl group; and Rand Rare independently a hydrocarbyl group.

Benzazole and pseudoindole diamido transition metal complexes and use thereof in olefin polymerization

This invention relates to a novel group 2, 3 or 4 transition metal metallocene catalyst compound having at least one arenyl ligand substituted with: 1) a cyclopropyl group and, optionally, 2) at at least one other group, such as a hydrocarbyl, a heteroatom or a heteroatom containing group.

Cyclopropyl substituted metallocene catalysts

Heterocyclic amido transition metal complexes are disclosed for use in alkene polymerization to produce polyolefins, preferably multimodal polyolefins. The heterocyclic amido transition metal complexes are formed by the chelation of a tridentate dianionic heterocyclic amido ligand to a group 3, 4, or 5 transition metal, where the tridentate ligand coordinates to the metal forming a five-membered ring and an eight-membered ring.

Heterocyclic amido transition metal complexes, production and use thereof

This invention relates to a novel group 2, 3 or 4 transition metal metallocene catalyst compound having at least one arenyl ligand substituted with: 1) a cyclopropyl group and, optionally, 2) at least one other group, such as a hydrocarbyl, a heteroatom or a heteroatom containing group.

Asymmetrical ligands

Catalysts

A heterophasic polypropylene resin comprising a polypropylene homopolymer matrix phase (A) and an ethylene-propylene copolymer phase (B) dispersed within the matrix, wherein the xylene soluble fraction of the heterophasic polypropylene resin is in the range 20 to less than 50 wt %; the heterophasic polypropylene resin has an MFR2 of 0.01 to 50 g/10 min; the ethylene content of the xylene soluble fraction of the heterophasic polypropylene resin is in the range of at least 20 wt % to less than 50 wt %; the heterophasic polypropylene resin has a notched charpy impact strength at &#x2212;20 C of at least 25 kJ/m, preferably at least 50 kJ/m; and wherein the MFR(Matrix)/MFR(XS)&#x2267;5, preferably &#x2267;10.

Heterophasic copolymers

This invention relates to novel bridged a hafnium transition metal metallocene catalyst compounds having two indenyl ligands substituted at the 4 positions with a Cto Calkyl, where the 3 positions are hydrogen (assuming the bridge position is counted as the one position) and the bridging atom is carbon or silicon which is incorporated into a cyclic group comprising 3, 4, 5, or 6 silicon and/or carbon atoms that make up the cyclic ring.

Substituted metallocene catalysts

A racemic complex of formula (I), wherein M is zirconium or hafnium; each X is a sigma ligand; L is a divalent bridge selected from &#x2014;R'C&#x2014;, &#x2014;R&#x2032;C&#x2014;CR&#x2032;, &#x2014;R&#x2032;Si&#x2014;, &#x2014;R&#x2032;Si&#x2014;SiR&#x2032;&#x2014;, &#x2014;R&#x2032;Ge&#x2014;, wherein each R&#x2032; is independently a hydrogen atom, C-hydrocarbyl, tri(C-alkyl)silyl, C-aryl, C-arylalkyl or C-alkylaryl; Rand R&#x2032; are each independently a Chydrocarbyl radical optionally containing one or more heteroatoms from groups 14-16; R&#x2032; is a Chydrocarbyl group optionally containing one or more heteroatoms from groups 14-16 and optionally substituted by one or more halo atoms. 

Growing community of inventors

Moscow, Russia

Pavel Sergeevich Kulyabin