MUMBAI, India, Sept. 22 -- Intellectual Property India has published a patent application (202617086307 A) filed by Basf Se on July 14, 2026, for Bismuth-Containing Catalyst With Heteroatoms-Bearing Dicarboxylate Ligand.
Inventors include Levent, Emre; Deglmann, Peter; Thuery, Peter; Klee, Vanessa; and Spatz, Simon.
The application for the patent was published on September 18, 2026, under issue no. 38/2026.
Abstract: The present invention relates to a bismuth-containing catalyst of formula (R1)2-(R2)-(Bi)3+ (I), wherein (R1)2- is a dianion of formula (II*), wherein A is unsubstituted or at least monosubstituted linear C3-30-alkylene, wherein at least two not adjacent CH2 groups of C3-30-alkylene are replaced by a heteroatom independently selected from the group consisting of O, S, 5 NH, N-C1-30-alkyl, N-C6-14-aryl and N-C7-30-aralkyl, wherein alkyl and aryl fragments of N-C1-30-alkyl, N-C6-14-aryl, N-C7- 30-aralkyl may at least be monosubstituted by hydroxyl, halogen, -CF3, NH2, -NH-C1-6-alkyl, -NH- phenyl, -N(C1-6-alkyl)2, -N(phenyl)2, -SH, -S-C1-6-alkyl, -S- phenyl, -O-C1-6-alkyl or -O-phenyl, to process for the preparation of the bismuth containing catalyst, to a process for the preparation of a compound, oligomer or polymer comprising at least one urethane group using the bismuth-containing catalyst, to a composition comprising (i) at least one monoalcohol (B1) or polyol (B2), (ii) at least one polyisocyanate (A) and (iii) the bismuth-containing catalyst, to a coating or adhesive layer formed from the composition on a substrate, to a foam formed from the composition, and to the use of the bismuth-containing catalyst in for preparing compounds, oligomers or polymers comprising a urethane group, as esterification and transesterification catalyst and as catalyst for ring-opening polymerizations of lactones and epoxides.
Disclaimer: Curated by HT Syndication.
