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Polyurethanes from Direct Organocatalytic Copolymerization of p-Tosyl Isocyanate with Epoxides.
Jia, Mingchen; Hadjichristidis, Nikos; Gnanou, Yves; Feng, Xiaoshuang.
Afiliación
  • Jia M; Physical Sciences and Engineering Division and KAUST Catalysis Center, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955, Saudi Arabia.
  • Hadjichristidis N; Physical Sciences and Engineering Division and KAUST Catalysis Center, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955, Saudi Arabia.
  • Gnanou Y; Physical Sciences and Engineering Division and KAUST Catalysis Center, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955, Saudi Arabia.
  • Feng X; Physical Sciences and Engineering Division and KAUST Catalysis Center, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955, Saudi Arabia.
Angew Chem Int Ed Engl ; 60(3): 1593-1598, 2021 Jan 18.
Article en En | MEDLINE | ID: mdl-32989882
The direct copolymerization of p-tosyl isocyanate (TSI) with epoxides, initiated by onium salts in the presence of trialkylborane, to produce polyurethanes is reported. The rate of copolymerization and the (regio)selectivity were investigated in relation to the trialkylborane and the initiator used. Under optimized conditions such copolymerizations have been successfully performed for a wide range of epoxides, including ethylene oxide, propylene oxide, 1-octene oxide, cyclohexene oxide, and allyl glycidyl ether. These copolymerizations afford a new category of polyurethanes, clear of side products such as cyclic oxazolidinone, isocyanurate, and poly(isocyanate) linkages. The experimental conditions used in this work are compatible with those for the organocatalytic (co)polymerization of other oxygenated monomers and CO2 , holding the potential for their terpolymerization with p-tosyl isocyanate and the development of new materials with unprecedented properties.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Angew Chem Int Ed Engl Año: 2021 Tipo del documento: Article País de afiliación: Arabia Saudita Pais de publicación: Alemania
Texto completo
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XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Angew Chem Int Ed Engl Año: 2021 Tipo del documento: Article País de afiliación: Arabia Saudita Pais de publicación: Alemania