US Patent Issued to Evonik Operations on March 18 for "Process for preparing homo- and copolymers of alkyl (meth)acrylates with low residual monomer content" (German, Chinese, American Inventors)

ALEXANDRIA, Va., March 19 -- United States Patent no. 12,252,661, issued on March 18, was assigned to Evonik Operations GmbH (Essen, Germany).

"Process for preparing homo- and copolymers of alkyl (meth)acrylates with low residual monomer content" was invented by Frank-Olaf Mahling (Mannheim, Germany), Maria Stimeier (Darmstadt, Germany), Thomas Schimmel (Shanghai), Stefan Karl Maier (Ober-Ramstadt, Germany) and Sofia Sirak (Plymouth Meeting, Pa.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for the preparation of homo- and copolymers of alkyl (meth)acrylates having a low residual monomer content involves preparing a reaction mixture containing monomers, charging the reaction mixture, heating the re...