MUMBAI, India, Sept. 5 -- Intellectual Property India has published a patent application (202441015429 A) filed by Hindustan Petroleum Corporation Limited, Bengaluru, Karnataka, on March 1, 2024, for 'process for preparation of battery separator films from polyolefins by cast film extrusion.'
Inventor(s) include C G, Jyothilakshmi; Narasagoudr, Shivayogi; G, Binitha; Patil, Yogesh Popatrao; Pramanik, Malay; Chelliahn, Bennet; Narayanan, Krishnamurthy; and S N, Sheshachala.
The application for the patent was published on Sept. 5, under issue no. 36/2025.
According to the abstract released by the Intellectual Property India: "The present invention discloses a process for preparation of battery separator films from polyolefins through a cast film extrusion. The process includes steps of preparing a blend of polyolefins, porogens and nano inorganic fillers, then cast film extrusion of the blend to produce a cast film. After that cutting the cast film into a required shape cast film and stretching the required shape cast film in a uniaxial direction to obtain a stretched cast film. Then extracting the porogens from the stretched cast film to obtain a porous battery separator film, wherein extracting is performed by using a solvent. Thereafter drying the battery separator film for a time period of 18-28 hours at a temperature of 40 C-80 C."
Disclaimer: Curated by HT Syndication.
