US Patent Issued to POLYTEX CHEMICAL ENGINEERING on Sept. 22 for "Method for preparing glutaryl-bridged bis-biogenic guanidine chelate and method for preparing polybutylene succinate" (Chinese Inventors)

ALEXANDRIA, Va., Sept. 24 -- United States Patent no. 12,742,039, issued on Sept. 22, was assigned to POLYTEX CHEMICAL ENGINEERING Co. LTD. (Yangzhou, China).

"Method for preparing glutaryl-bridged bis-biogenic guanidine chelate and method for preparing polybutylene succinate" was invented by Hong Li (Yangzhou, China) and Dubin Wang (Yangzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for preparing glutaryl-bridged bis-biogenic guanidine chelate (GbG)MX2 including contacting biogenic guanidine (G) with glutaryl chloride in DMSO solvent for an acylation reaction, to yield glutaryl-bridged bis-biogenic guanidine GbG (G-b-G), and mixing the glutaryl-bridged bis-biogenic guanidine GbG as a ch...