OMV has patented a multi-stage process for polymerizing ethylene or copolymerizing it with alpha-olefins. The process utilizes a supported catalyst in a gas phase reactor, aiming to reduce particle carry-over and predict particle size distribution based on the catalyst’s median particle size. GlobalData’s report on OMV 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 OMV, Corrosion resistant fuel additives was a key innovation area identified from patents. OMV's grant share as of June 2024 was 50%. Grant share is based on the ratio of number of grants to total number of patents.
Process for polymerizing ethylene in multi-stage reactors
The patent US12043687B2 outlines a multi-stage process for polymerizing ethylene or copolymerizing ethylene with alpha-olefin comonomers containing 3 to 12 carbon atoms. This process employs a supported polymerization catalyst and consists of at least two connected polymerization stages, with the final stage conducted in a gas phase reactor. Key parameters include a minimum catalyst activity of 15 kg/gcatalyst/h in the first stage, which is not a pre-polymerization stage, and a restriction that subsequent stages maintain catalyst activity at no more than 75% of that in the first stage. The supported catalysts can be selected from various types, including Ziegler-Natta and metallocene catalysts, with specific requirements for particle size and distribution.
Further specifications detail the characteristics of the supported polymerization catalyst, including a median particle size ranging from 5 to 30 µm and a relative span of the particle size distribution (PSDcat) that must adhere to defined equations for both fluidized bed and double cone reactors. The patent also stipulates that the particle size distribution of the ethylene homo- or copolymer produced in the last stage should fall within a specified range. This comprehensive approach aims to optimize the efficiency and effectiveness of the polymerization process, ensuring high-quality ethylene polymers while maintaining control over catalyst performance and particle characteristics.
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GlobalData’s Patent Analytics tracks patent filings and grants from official offices around the world. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
