Polyphosphazene polymers containing substituents derived...

Details Polyphosphazene polymers containing substituents derived... Polyphosphazene polymers containing substituents derived...

C - Chemistry, Metallurgy

08

G

402/319, 402/355

C08G 79/04 (2006.01) C08G 79/02 (2006.01) C08L 85/02 (2006.01)

Patent

CA 1133498

ABSTRACT OF THE DISCLOSURE Polyphosphazene copolymers are prepared which are comprised of repeating units represented by the formulas: Image wherein X 18 represented by the formula: Image where R1 end R2 are independently selected from the group consisting of substituted and unsubstituted alkyl radicals containing from 1 to 15 carbon atoms, substituted and unsubstituted cycloalkyl aryl aryl- alkyl and heterocyclic ring; X' is selected from the group consisting of substituted and unsubstituted alkoxy, alkoxy, mercapto, and amino radicals, and mixtures thereof and 20 ? (w + y + z) ? 50,000 per polymer unit. The polyphosphazene polymers of the present invention are prepared by the reaction of a ketoxime and an additional reactant such as alkanol, aryl alcohol, mercaptan, or amine with poly(dichlorophos- phazene) in the presence of a tertiary amine. The polymers of this invention may be modified by crosslinking or curing. The polymers of this invention can be utilized to form protective films and may also be utilized in applications such as molding, coatings, foams and the like.

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