Patent
Catalyst for the production of olefin polymers
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TLDR
In this paper, a cyclic catalyst precursor with formula (1) wherein M is a Group IVB metal, each L is a monovalent, bivalent, or trivalent anion, X and Y are each heteroatoms, and each cyclo is a Cyclic moiety; each R1 is a group containing 1 to 50 atoms selected from the group consisting of hydrogen and Group IIIA to Group VIIA elements.Abstract:
A catalyst precursor having formula (1) wherein M is a Group IVB metal; each L is a monovalent, bivalent, or trivalent anion; X and Y are each heteroatoms; each Cyclo is a cyclic moiety; each R1 is a group containing 1 to 50 atoms selected from the group consisting of hydrogen and Group IIIA to Group VIIA elements, and two or more adjacent R1 groups may be joined to form a cyclic moiety; each R2 is a group containing 1 to 50 atoms selected from the group consisting of hydrogen and Group IIIA to Group VIIA elements, and two or more adjacent R2 groups may be joined to form a cyclic moiety; W is a bridging group; and each m is independently an integer from 0 to 5.read more
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References
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Journal ArticleDOI
Novel olefin polymerization catalysts based on iron and cobalt
George J. P. Britovsek,Vernon C. Gibson,Stuart James Mctavish,Gregory A. Solan,Andrew J. P. White,David J. Williams,Brian Stephen Kimberley,Peter James Maddox +7 more
TL;DR: A new family of olefin polymerization catalysts, derived from iron and cobalt complexes bearing 2,6-bis(imino)pyridyl ligands, was described in this paper.
Patent
α-olefins and olefin polymers and processes therefor
Lynda Kaye Johnson,Christopher Moore Killian,Samuel David Arthur,Jerald Feldman,Elizabeth Forrester Mccord,Stephan James Mclain,Kristina Ann Kreutzer,Margaret Anne Bennett,Edward Bryan Coughlin,Steven Dale Ittel,Anju Parthasarathy,Daniel Joseph Tempel,Maurice Brookhart +12 more
TL;DR: In this paper, processes for polymerizing ethylene, acyclic olefins, a nd/or selected cyclic OLEFins, and optionally selected o lefinic esters or carboxylic acids, and other monomers are discussed.
Patent
Preparation of metallocene catalysts for polymerization of olefins
John A. Ewen,Michael J. Elder +1 more
TL;DR: In this article, an ionizing agent is used to ionize the neutral metallocene compound, which does not contain an active proton and contains a carbonium, oxonium or sulfonium cation.
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Olefin polymerization process
TL;DR: In this article, a method for preparing a supported organometallic complex is described, which comprises a Group 3 to 10 transition metal and an indenoindolyl ligand that is bonded to the transition metal.