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The Preparation of Carbodiimides from Isocyantes

✍ Scribed by Dr. W. Neumann; Dr. Peter Fisher

Publisher
John Wiley and Sons
Year
1962
Tongue
English
Weight
460 KB
Volume
1
Category
Article
ISSN
0044-8249

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✦ Synopsis

Abstract

Carbodiimides are formed with simultaneous evolution of CO~2~ by the reaction of basic catalyst with sterically hindered isocynates. Another generally applicable synthesis of carbodiimides involves intermediate formation of cyclic adducts of isocyanates and carbodiimides, which, upon cleavage, exchange the isocyanate and carbodiimide functions. Both processes are suitable for the preparation of polycarboiimides. Several commercial applications of mono‐ and polycarbodiimides are pointed out.

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