Synthesis of Polyurethanes Using Organocatalysis: A Perspective

Abstract : Organocatalysis has become an invaluable tool for polymer synthesis, and its utility has been demonstrated in ring-opening, anionic, zwitterionic, and group-transfer polymerizations. Despite this, the use of organocatalysis in other polymerization reactions such as step-growth polymerizations remains underexplored, relative to more traditional metal-based polymerizations. Recently, the use of organic bases such as guanidines, amidines, N-heterocyclic carbenes, and organic "strong or super-strong" Bronsted acids to catalyze the synthesis of metal-free polyurethanes has shown to be competitive to commercially widely used dibutyltin dilaurate and dibutyltin diacetate catalysts. This Perspective article highlights recent advances in organocatalyst design for isocyanate-based polyurethane synthesis with the aim of comparing the activity and selectivity of each of the new catalytic reactions to each other and the traditional metal-based catalysts. The article also draws attention to new trends in isocyanate-free polyurethane synthesis and the key role that organocatalysis is playing in these innovative polymerization processes.
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Submitted on : Tuesday, September 13, 2016 - 11:57:01 AM
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Haritz Sardon, Ana Pascual, David Mecerreyes, Daniel Taton, Henri Cramail, et al.. Synthesis of Polyurethanes Using Organocatalysis: A Perspective . Macromolecules, American Chemical Society, 2015, 48 (10), pp.3153-3165. ⟨10.1021/acs.macromol.5b00384 ⟩. ⟨hal-01365260⟩



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