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- W2009104891 abstract "A novel method for the synthesis of polyureas has been developed. This method involves ring-opening addition reaction of 2-phenyl-1,3,4-oxadiazolin-5-one with diamines, bis(4-aminophenyl) ether, 4,4′-methylenedianiline and m-xylylenediamine, followed by self-polycondensation of the resulting ring-opened adducts. Polymerizations in m-cresol at 150°C proceeded fast and were almost completed within 5 h. Polyureas were produced with reduced viscosities up to 0,38 dL · g−1. A model compound study was performed to demonstrate the feasibility of the reaction for the formation of polyureas." @default.
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- W2009104891 date "1998-04-01" @default.
- W2009104891 modified "2023-09-25" @default.
- W2009104891 title "Novel synthesis of polyureas by ring-opening polyaddition-condensation reaction of 2-phenyl-1,3,4-oxadiazolin-5-one with diamines" @default.
- W2009104891 doi "https://doi.org/10.1002/(sici)1521-3927(19980401)19:4<177::aid-marc177>3.0.co;2-c" @default.
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