ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,448,467, issued on Oct. 21, was assigned to THE UNIVERSITY OF LIVERPOOL (Liverpool, Great Britain).
"Branched polymers" was invented by Steve Rannard (Liverpool, Great Britain), Pierre Chambon (Liverpool, Great Britain) and Savannah Cassin (Liverpool, Great Britain).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method of preparing a branched polymer comprises the free radical polymerisation of a multivinyl monomer in the presence of a chain transfer agent, using a source of radicals, wherein the extent of propagation is controlled relative to the extent of chain transfer to prevent gelation of the polymer. The average length of each vinyl polymer chai...