GENEVA, July 14 -- WANHUA CHEMICAL GROUP CO., LTD. (No.59, Chongqing Street, Yantai Economic and Technological Development ZoneYantai, Shandong 264006), 万华化学集团股份有限公司 (中国山东省烟台市经济技术开发区重庆大街59号) filed a patent application (PCT/CN2024/070758) for "PREPARATION METHOD FOR DIPHENYLMETHANE SERIES DIAMINE AND POLYAMINE" on Jan 05, 2024. With publication no. WO/2025/145419, the details related to the patent application was published on Jul 10, 2025.
Notably, the patent application was submitted under the International Patent Class...