Exxon Mobil has filed a patent for a catalyst compound represented by Formula (I), which involves transition metal complexes of a multi-dentate ligand. The ligand consists of a neutral heterocyclic Lewis base and a second Lewis base, forming an 8-membered chelate ring when coordinated to the metal center. GlobalData’s report on Exxon Mobil gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Exxon Mobil, Microscale biofuel reactors was a key innovation area identified from patents. Exxon Mobil's grant share as of September 2023 was 65%. Grant share is based on the ratio of number of grants to total number of patents.
A recently filed patent (Publication Number: US20230312772A1) describes a catalyst compound for use in the polymerization of olefins. The patent claims a catalyst compound represented by Formula (I), which includes various possible variations represented by Formulas (Ia), (Ib), (III), and (IV). The catalyst compound can include the elements Hf, Ti, or Zr as represented by the symbol M. The presence of oxygen is indicated by the symbols E and E*, and nitrogen is represented by the symbol Q.
The patent also claims that the fragment R6'-A2=A3-R5' can form an aromatic ring, specifically a 5 or 6 membered aromatic ring. Additionally, the fragment A1QA1' can form a substituted or unsubstituted pyridyl ring, and L' can also be a substituted or unsubstituted pyridyl ring.
In one specific embodiment described in the patent, when the catalyst compound is represented by Formula (IV), E and E* are both oxygen, each G is sulfur (S) or a nitrogen atom (NR24), each R24 is selected from C1-C20 alkyl groups, and each R44 is either hydrogen or a C1-C20 alkyl group. In another embodiment, each G is sulfur (S) and each R44 is hydrogen.
The patent also claims a process for polymerizing olefins using the catalyst compound described. The process involves contacting one or more olefins with a catalyst system that includes the catalyst compound described in the previous claims. The result of this process is the production of a polymer.
In summary, the patent describes a catalyst compound and its variations for use in the polymerization of olefins. The compound includes specific elements and functional groups, and the patent claims various embodiments and processes for using the catalyst compound in polymerization reactions.
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