Yokohama Rubber has patented a thermoplastic resin composition for refrigerant piping, featuring high barrier properties and flexibility. It includes a thermoplastic resin matrix with a melting point of at least 150°C, a rubber domain, viscosity stabilizers, antioxidants, and cross-linked rubber components. GlobalData’s report on Yokohama Rubber 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 Yokohama Rubber, Anti-skid tyre treads was a key innovation area identified from patents. Yokohama Rubber's grant share as of July 2024 was 49%. Grant share is based on the ratio of number of grants to total number of patents.
The patent US12071541B2 presents a thermoplastic resin composition specifically designed for refrigerant transporting piping. This composition features a matrix that includes a thermoplastic resin with a melting point of at least 150°C, combined with a rubber-containing domain. The rubber can be either butyl-based or olefin-based, and the matrix incorporates a viscosity stabilizer in the range of 5% to 30% by weight. Additionally, the composition includes at least one type of antioxidant—phenylenediamine-based or quinoline-based—and a processing aid, with a portion of the rubber being cross-linked. The claims detail specific ratios for the matrix and rubber components, as well as the types of rubbers and antioxidants that can be utilized.
Further claims elaborate on the cross-linking methods, which can involve chemical cross-linking through the specified antioxidants or hydrogen bonding facilitated by a trihydric alcohol with a triazine skeleton. The patent also outlines the potential types of thermoplastic resins that can be used, including polyamide, polyester, and polyvinyl alcohol-based resins, along with their specific variants. The composition aims to enhance the performance and durability of refrigerant transporting pipes, addressing the need for materials that can withstand high temperatures and provide effective insulation and stability in refrigerant applications.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. 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.
