US Patent Issued to Resonac on Sept. 8 for "Fluorine-containing ether compound, lubricant for magnetic recording medium, and magnetic recording medium" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,729,347, issued on Sept. 8, was assigned to Resonac Corp. (Tokyo).

"Fluorine-containing ether compound, lubricant for magnetic recording medium, and magnetic recording medium" was invented by Naoya Fukumoto (Tokyo) and Yutaka Tanji (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "This fluorine-containing ether compound is a fluorine-containing ether compound represented by Formula (1). In Formula (1), X is Formula (2-1) to (2-5), and A is Formula (3-1) or (3-2). B is a perfluoropolyether chain. D has 2 to 4 polar groups, has an oxygen atom bonded to a methylene group adjacent to D, has 1 to 15 carbon atoms, and has 0 to 9 carbon atoms in a shortest...