US Patent Issued to Bridgestone on June 3 for "Rubber compositions prepared with a polar polysulfide crosslinking agent" (Ohio Inventors)

ALEXANDRIA, Va., June 4 -- United States Patent no. 12,319,795, issued on June 3, was assigned to Bridgestone Corp. (Chuo-ku, Japan).

"Rubber compositions prepared with a polar polysulfide crosslinking agent" was invented by Erin Sheepwash (Cuyahoga Falls, Ohio) and Rita E. Cook (Akron, Ohio).

According to the abstract* released by the U.S. Patent & Trademark Office: "A vulcanizate prepared by a method comprising introducing an elastomer, a filler, and a polar polysulfide crosslinking agent to form a masterbatch and introducing a curative to the masterbatch to form a vulcanizable composition. Vulcanizing the composition to graft the polar group from the crosslinking agent onto an elastomer to increase the hydrophilicity of the composition...