Process for preparing poly(organophosphazenes) from soluble...

Details Process for preparing poly(organophosphazenes) from soluble... Process for preparing poly(organophosphazenes) from soluble...

C - Chemistry, Metallurgy

08

G

402/319, 402/355

C08G 79/02 (2006.01)

Patent

CA 1135715

Abstract of the Disclosure Poly(organophosphazenes) containing repeating units of the structure: Image wherein X and X' represent organic substituents which may be the same or different and n is from 20 to 50,000, are prepared by a process which involves reacting a poly(dichlorophosphazene) having the formula -(NPCl2)n-, in which n is from 20 to 50,000, with an active hydrogen- containing compound in the presence of a bicyclic amidine represented by the structure: Image in which m is an integer of from 1 to 10. A unique aspect of the process of the invention is that it can be utilized to prepare such poly(organo- phosphazenes) utilizing either soluble or gelled (insoluble) poly(dichlorophosphazenes) as starting materials.

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