MUMBAI, India, Sept. 12 -- Intellectual Property India has published a patent application (202537082809 A) filed by Snf Group, Andrezieux-Boutheon, France, on Sept. 1, for 'organotin catalysts recovery process.'
Inventor(s) include Favero, Cedrick; Legras, Benoit; Kieffer, Johann; Boisse, Nicolas; and Ling, Jing.
The application for the patent was published on Sept. 12, under issue no. 37/2025.
According to the abstract released by the Intellectual Property India: "An organotin catalysts recycling method comprises the following successive steps: 1) preparation of a mixture comprising (i) a polar solvent selected from water, at least one C1-C12 alcohol, and a mixture of water and at least one C1-C12 alcohol (ii) an organotin catalyst residue solution S1 resulting from the synthesis of an amino alkyl (meth) acrylate compound and (iii) at least one organic extraction solvent ES1, liquid-liquid extraction LLE1 of this mixture using the organic extraction solvent ES1 to obtain an organic solution OS1 and an aqueous solution AS1; 2) distillation D1, at a temperature T1 and at a pressure P1, of the organic solution OS1 to obtain an organic solution OS1' and an organic distillate OD1;3) distillation D2, at a temperature T2 and at a pressure P2, of the organic solution OS1' to obtain an organic solution OS1" and an organic distillate OD2."
The patent application was internationally filed on Mar. 08, 2023, under International application No.PCT/CN2023/080352.
Disclaimer: Curated by HT Syndication.
