S-Oil Corporation patented a method for creating polyolefin nanocomposites by combining zinc-aluminum LDH, zirconocene complex, and olefin gas in a solvent. The process involves sonication, degassing, and catalyst addition, resulting in a homogeneous mixture. The patent emphasizes the dispersion of LDH in the final product. GlobalData’s report on S-Oil Corporation 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 S-Oil Corporation, was a key innovation area identified from patents.

Polyolefin nanocomposite production method using supported catalyst

Source: United States Patent and Trademark Office (USPTO). Credit: S-Oil Corporation Inc

A recently granted patent (Publication Number: US11926691B2) discloses a method for producing a supported catalyst and a polyolefin nanocomposite. The process involves combining zinc and aluminum salts in an aqueous medium, followed by refluxing with an ionic surfactant and an inorganic base to obtain a zinc-aluminum layered double hydroxide (LDH). This LDH is then mixed with a zirconocene complex in a nonpolar solvent, sonicated to form a homogeneous slurry, and further reacted with an aluminoxane catalyst and olefin gas to produce the polyolefin nanocomposite. The resulting nanocomposite exhibits homogeneously dispersed LDH within the polyolefin matrix.

Furthermore, the method includes specific details such as the types of zirconocene complex and aluminoxane catalyst used, the composition and pressure of the olefin gas, as well as parameters for the sonication process. The patent also describes additional steps for creating a polyolefin co-polymer with a bimodal molecular weight distribution by mixing the polymer nanocomposite with an olefin feed mixture. The resulting co-polymer demonstrates unique characteristics such as multiple melting temperatures, higher short chain branch distribution, and lower crystallinity compared to co-polymers produced without sonication. This innovative method offers a novel approach to enhancing the properties of polyolefin materials through the incorporation of LDH nanoparticles.

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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.