Carlisle has been granted a patent for EPDM rubber membranes with maleic anhydride grafted EPDM, suitable for weatherproofing buildings and facades. The composition includes specific additives like silica, titanium dioxide, and antioxidants. GlobalData’s report on Carlisle 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 Carlisle, Fiber-reinforced material joining techniques was a key innovation area identified from patents. Carlisle's grant share as of March 2024 was 66%. Grant share is based on the ratio of number of grants to total number of patents.
A recently granted patent (Publication Number: US11958963B2) discloses a composition and method for making an EPDM membrane. The composition includes ethylene propylene diene monomer (EPDM) polymer, maleic anhydride grafted EPDM polymer, silica, titanium dioxide, talc, oil, polyethylene glycol, a silane coupling agent, and an antioxidant. The maleic anhydride grafted EPDM polymer and silane coupling agent are present in specific amounts, with the former ranging from about 0.5 to 30 phr. Additionally, an accelerator such as zinc oxide or stearic acid can be included in the composition.
Furthermore, the patent claims the membrane made from this composition, which also includes stearic acid, zinc oxide, and an antioxidant. The membrane may further comprise a fabric layer for added strength and functionality. The method of making the EPDM membrane involves blending the composition, forming it into a membrane through molding, calendaring, or extrusion, and curing it using heat. The curing process can also involve laminating a fabric layer to the membrane and may include an accelerator in the homogeneous mixture. Overall, the patent provides a detailed guide for creating EPDM membranes with specific components and processes to ensure quality and performance.
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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.
