YPF has patented a method for creating a super-hydrophobic membrane. The process involves cleaning a metal mesh, enhancing its hydrophilicity through electrochemical anodizing, coating it with a hydrophobic substance, and drying it. The resulting membrane achieves a contact angle of 162°, indicating its super-hydrophobic properties. GlobalData’s report on YPF 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 YPF, was a key innovation area identified from patents. YPF's grant share as of June 2024 was 28%. Grant share is based on the ratio of number of grants to total number of patents.
Method for preparing a super-hydrophobic membrane
The granted patent US11998877B2 outlines a method for preparing a super-hydrophobic membrane utilizing a metal mesh. The process begins with the provision of a metal mesh, which is then cleaned through immersion in an organic solvent. Following this, the cleaned mesh undergoes a surface modification treatment aimed at enhancing its hydrophilicity. This treatment involves an electrochemical anodizing process in an aqueous sodium hydroxide solution, after which the mesh is treated with a suspension of nanoparticulated oxides, specifically SiO2. The final steps include coating the modified mesh with a hydrophobic organic substance, achieved by immersion in a solution of a hydrophobic silylated reagent, and subsequently drying the mesh to yield a super-hydrophobic membrane characterized by a contact angle of 162°.
The patent further specifies that the metal mesh can be made from various alloys, including brass, bronze, tin bronze, or stainless steel. The hydrophobic silylated reagents mentioned include hexadecyltrimethoxysilane (HDTMS) and octadecyltrimethoxysilane, among others, which are used in a mixture of ethanol and glacial acetic acid. Additionally, the drying process of the coated mesh can occur at temperatures ranging from 90° C. to 210° C, with a preferred temperature of 110° C, and at pressures between 5 and 40 mmHg. This method provides a systematic approach to creating membranes with enhanced water-repellent properties, potentially applicable in various industrial and technological fields.
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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.
