Organophosphonic polymers and their use as stabilizers in...

Details Organophosphonic polymers and their use as stabilizers in... Organophosphonic polymers and their use as stabilizers in...

C - Chemistry, Metallurgy

08

F

C08F 30/02 (2006.01) C08F 8/12 (2006.01)

Patent

CA 2092991

Organophosphonic polymers of general formula (I) where Y is a methyl or ethyl group or hydrogen and Z is hydrogen, the ammonium group, an alcaline metal or an alcaline earth metal. A method for producing these polymers comprises three stages: production of a monomer by reacting a ketene with diethylphosphite in the presence of an acid catalyst; polymerization of the monomer in solution in a solvent by means of a free radical initiator; hydrolysis of the polymer obtained by means of a concentrated solution of inorganic or inorganic based acid. Aqueous solution of hydrogen peroxyde stabilized by means of said polymers.

2092991 9206122 PCTABS00110 Polymères organophosphoniques répondant à la formule générale (I) dans laquelle Y est un groupe méthyle, éthyle ou un atome d'hydrogène et Z représente un atome d'hydrogène, le groupe ammonium, un atome de métal alcalin ou de métal alcalino-terreux. Procédé de fabrication desdits polymères en 3 étapes; fabrication d'un monomère par réaction d'un cétène avec du diéthylphosphite en présence d'un catalyseur acide; polymérisation du monomère en solution dans un solvant à l'aide d'un initiateur de radicaux libres; hydrolyse du polymère obtenu par une solution concentrée d'acide inorganique ou de base inorganique. Solution aqueuse de peroxyde d'hydrogène stabilisée au moyen desdits polymères.

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