Production of polyorganophosphazenes

C - Chemistry – Metallurgy – 07 – F

Patent

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C07F 9/24 (2006.01) C07F 9/06 (2006.01) C08G 79/02 (2006.01)

Patent

CA 2297030

A process for producing a polyorganophosphazene from a polyhalophosphazene. The polyhalophosphazene is reacted with a metal salt of an alkyl ester of hydroxybenzoic acid wherein the metal salt of the alkyl ester of hydroxybenzoic acid is contained in a homogeneous melt solution. The reaction of the polyhalophosphazene with the metal salt of an alkyl ester of hydroxybenzoic acid produces a macromolecular substituted polymer, which is reacted with a base to hydrolyze the polymer and produce the desired polyorganophosphazene product.

L'invention concerne un procédé de préparation de polyorganophosphazène à partir d'un polyhalophosphazène. Ce dernier est mis à réagir avec un sel métallique d'un ester d'alkyle d'acide hydroxybenzoïque, le sel métallique de l'ester d'alkyle d'acide hydroxybenzoïque étant contenu dans une solution liquide homogène. La réaction du polyhalophosphazène avec le sel métallique d'un ester d'alkyle d'acide hydroxybenzoïque produit un polymère substitué de manière macromoléculaire, qui est mis à réagir avec une base, afin d'hydrolyser le polymère et de donner lieu au produit polyorganophosphazène voulu.

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