Method of making mixed aliphatic/aromatic polycarbodiimides

Details Method of making mixed aliphatic/aromatic polycarbodiimides Method of making mixed aliphatic/aromatic polycarbodiimides

C - Chemistry, Metallurgy

08

G

402/130

C08G 18/02 (2006.01) C08K 5/29 (2006.01)

Patent

CA 1213394

- 22 - METHOD OF MAKING MIXED ALIPHATIC/AROMATIC POLYCARBODIIMIDES ABSTRACT OF THE INVENTION Mixed aliphatic/aromatic polycarbodiimides can be prepared by first heating aliphatic mono- and diisocyanates with a phospholene oxide catalyst and then feeding the aromatic mono and/or diisocyanates in an inert solvent to the reaction mixture.

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