High-Throughput Screening of the Alkoxide/Oxime-Based Library An Alternative to Organotin Compounds for the Alkoxysilane Condensation in Adhesives and Sealants

B. Colin 1 Olivier Lavastre 2 S. Fouquay 1 G. Michaud 1 F. Simon 1 J.-M. Brusson 3
1 BOSTIK
2 IETR - Institut d'Electronique et de Télécommunications de Rennes
3 TotalFinaElf
Abstract : In this work, a high-throughput screening (HTS) method was used to discover new efficient catalysts to substitute organotin compounds (DBTDL) for the cross-linking of silyl-modified polymers (SMPs). We report here on the use of our HTS method to investigate a library of alkoxide/oxime systems with different metal/ligand (M/L) ratios. Among the 156 candidates tested, 40 interesting hits were detected. Then, the cross-linking times for the better hits were measured on the SMP. Some of these seem to be more efficient than DBTDL and exhibit a good stability during storage in cartridges. Thereby, a high efficiency of alkoxide/oxime systems was established that shows great potential for the generation of new ligands to provide new tin-free catalysts for the cross-linking of adhesives and sealants.
Keywords : silyl-modified polymers tin-free catalysts cross-linking high-throughput screening
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B. Colin, Olivier Lavastre, S. Fouquay, G. Michaud, F. Simon, et al.. High-Throughput Screening of the Alkoxide/Oxime-Based Library An Alternative to Organotin Compounds for the Alkoxysilane Condensation in Adhesives and Sealants. ACS Combinatorial Science, ACS, 2019, 21 (4), pp.300-309. ⟨10.1021/acscombsci.8b00161⟩. ⟨hal-02050595⟩

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