Abstract: The 5-OMe-6-tBu substitution of the indenyl fragment of C1 symmetric catalysts is critical for improvements in EP molecular weight capability. The catalysts described in this document are also capable of producing other ordinary polyolefins such as iPP, PE and EO copolymers. The added capability of high molecular weight EP copolymers may expand the potential of C1 symmetric systems in the area of RCPs and ICPs where such capability is necessary.

Abstract: This invention relates to a process to produce an ionomer comprising: 1) contacting, in a reactor, one or more C2-C60 ?-olefins, an optional diene, and a metal alkenyl with a catalyst system comprising an activator, a catalyst compound, and a support; 2) forming a copolymer comprising one or more C2-C60 ?-olefin monomers and about 0.01 wt % to about 20 wt %, based on the weight of the copolymer, of metal alkenyl; 3) functionalizing and quenching the polymerization reaction with one or more electrophilic groups; and 4) obtaining ionomer.

Abstract: Mixed metallocene catalyst systems may comprise an activator, a first metallocene having a structure represented by Formula 1, and a second metallocene different from the first metallocene. M is a Group 4 metal, T is a bridging group, X1 and X2 are each a univalent anionic ligand or optionally joined together to define a metallocycle ring or similar, J1 and J2 are each H or J1 and J2 are joined together to form a cyclic or polycyclic ring structure, and R1, R2, and R8 are preferably independently H, optionally substituted C1-C40 alkyl, or optionally substituted C6-C14 aryl. R3 is a bulky alkyl group, such as an optionally substituted cyclohexyl, norbornanyl, adamantyl, or t-butyl, or an optionally substituted aryl group, such as an optionally substituted phenyl group. The second metallocene may have C2 symmetry or pseudo-C2 symmetry. The catalyst systems may afford polyolefins having a high degree of vinyl termination.

Abstract: The present disclosure relates to ansa-metallocene catalyst compounds, catalyst systems comprising such compounds, and uses thereof. In some embodiments, a catalyst compound is represented by Formula (I): TyLAMXn-2 ??(I), wherein: M is a group 3-6 metal; n is the oxidation state of M; A is a monocyclic or polycyclic arenyl ligand bonded to M and is substituted by at least one phenanthridin-5-yl substituent; L is a monocyclic or polycyclic arenyl ligand bonded to M; T is a bridging group; y is 1 or 0; and each X is independently a univalent anionic ligand, or two Xs are joined and bound to M to form a metallocycle ring, or two Xs are joined to form a chelating ligand, a diene ligand, or an alkylidene ligand.

Abstract: Vinylcyclobutane (VCB) homopolymers, VCB copolymers and processes for making same. The VCB homopolymers and copolymers have a polydispersity (PDI) of less than 3.0 and are made by contacting VCB monomer in the presence of a single-site metallocene, post metallocene, or half metallocene, and an activator, under sufficient reaction conditions to produce a VCB (co)polymer having the narrow PDI of less than 3.0. The resulting poly(vinylcyclobutane) polymers have increased crystallinity and melting point properties (Tm of 165° C. to 246° C.) that are comparable to conventional polyolefins such as polyethylene (typical Tm <135° C.) and polypropylene (typical Tm <165° C.).

Abstract: Catalyst compositions are disclosed herein, as well as embodiments of catalyst systems and their use in the production of olefin polymers. The catalysts disclosed herein are simple organometallic, metallocene complexes having at least one guaiazulene-based ligand (e.g., guaiazulene or a guaiazulene derivative). Additionally, the catalyst can be combined with an activator, such as methyl alumoxane and/or a non-coordinating anion to provide a catalyst system. Either the catalyst or the catalyst system can be combined with a support, such as silica and/or alumina. The catalyst system, supported or unsupported, can be used to polymerize olefins, such as propylene or ethylene.

Abstract: The embodiments described herein pertain to constrained geometry catalyst (CGC)-type titanium catalyst compounds with an amido moiety that features asymmetric substituents that give rise to diastereomerism in new catalysts. Catalyst compounds embodying the present technological advancement are excellent catalysts for variety of transformations including homopolymers of propylene (P), ethylene (E), ethylene-propylene (EP)-copolymers and ethylene-octene (EO) copolymers.

Abstract: This invention relates to a process to produce cyclic olefin containing polymer compositions using transition metal complexes of a dianionic, tridentate ligand that features a central neutral heterocyclic Lewis base and two phenolate donors, where the tridentate ligand coordinates to the metal center to form two eight-membered rings. Preferably the bis(phenolate) complexes are represented by Formula (I): where M, L, X, m, n, E, E?, Q, R1, R2, R3, R4, R1?, R2?, R3?, R4?, A1, A1?, A3A2, and A2?A3? are as defined herein, where A1QA1? are part of a heterocyclic Lewis base containing 4 to 40 non-hydrogen atoms that links A2 to A2? via a 3-atom bridge with Q being the central atom of the 3-atom bridge.

Abstract: The present disclosure provides aromatic-solvent-free supported catalyst compounds and catalyst systems comprising asymmetric bridged metallocenes containing a ligand having at least one saturated ring, catalyst systems including such compounds, and uses thereof. These supported catalyst compounds and catalyst systems can be used to prepare polymer comprising no aromatic solvent.

Abstract: A catalyst compound and process for olefin polymerization.

Abstract: Compositions may comprise symmetrical and asymmetrical pyridine-containing transition metal-complexes having appended group 13 Lewis acids positioned on the pyridine-containing ligands of the transition metal-complex such that the group 13 Lewis acid may be near the catalytic site, thereby allowing the appended group 13 Lewis acid to function more efficiently in promoting formation of a catalytically active species. Catalysts systems may comprise these symmetrical and asymmetrical pyridine-containing transition metal-complexes and methods of preparing polyolefins may use these catalyst systems.

Abstract: The alkylation of transition metal coordination catalyst complexes (such as metallocenes and/or post-metallocenes) in non-polar solvents with high conversion to the dialkylated transition metal coordination catalyst complex may be accomplished by reacting (a) a transition metal coordination catalyst complex comprising a transition metal linked to at least one an anionic donor ligand and at least one leaving group having a non-carbon atom directly linked to the transition metal, (b) an aluminum alkyl, and (c) a fluoride salt at 0° C. to 85° C. in a non-polar solvent to yield an alkylated transition metal coordination catalyst complex.

Abstract: A catalyst compound and process for olefin polymerization.

Abstract: The present disclosure provides catalyst compounds comprising asymmetric bridged metallocenes containing a ligand having at least one saturated ring, catalyst systems including such compounds, and uses thereof. Catalyst compounds of the present disclosure can include indacenyl-type ligands. In another class of embodiments, the present disclosure is directed to polymerization processes to produce polyolefin polymers from catalyst systems including one or more olefin polymerization catalysts, at least one activator, and an optional support.

Abstract: This invention relates to polymers comprising: one or more that include 1) at least 11 wt % 4 substituted 1,4 hexadiene and less than 20 wt % 5-methyl-1,4-hexadiene, based upon the weight of the polymer, and 2) optionally, one or more olefins; and processes to produces such polymers using metallocene or post-metallocene catalyst compounds.

Abstract: This invention relates to a process to produce an ionomer comprising: 1) contacting, in a reactor, one or more C2-C60 ?-olefins, an optional diene, and a metal alkenyl with a catalyst system comprising an activator, a catalyst compound, and a support; 2) forming a copolymer comprising one or more C2-C60 ?-olefin monomers and about 0.01 wt % to about 20 wt %, based on the weight of the copolymer, of metal alkenyl; 3) functionalizing and quenching the polymerization reaction with one or more electrophilic groups; and 4) obtaining ionomer.

Abstract: This invention relates to supported catalyst compositions of transition metal complexes of a dianionic, tridentate ligand that features a central neutral heterocyclic Lewis base and two phenolate donors, where the tridentate ligand coordinates to the metal center to form two eight-membered rings. Preferably the bis(phenolate) complexes are represented by Formula (I): where M, L, X, m, n, E, E?, Q, R1, R2, R3, R4, R1?, R2?, R3?, R4?, A1, A1?, A3A2, and A2?A3? are as defined herein, where A1QA1? are part of a heterocyclic Lewis base containing 4 to 40 non-hydrogen atoms that links A2 to A2? via a 3-atom bridge with Q being the central atom of the 3-atom bridge.

Abstract: This invention relates to supported catalyst compositions of transition metal complexes of a dianionic, tridentate ligand that features a central neutral heterocyclic Lewis base and two phenolate donors, where the tridentate ligand coordinates to the metal center to form two eight-membered rings. Preferably the bis(phenolate) complexes are represented by Formula (I): where M, L, X, m, n, E, E?, Q, R1, R2, R3, R4, R1?, R2?, R3?, R4?, A1, A1?, A3A2, and A2?A3? are as defined herein, where A1QA1? are part of a heterocyclic Lewis base containing 4 to 40 non-hydrogen atoms that links A2 to A2? via a 3-atom bridge with Q being the central atom of the 3-atom bridge.