C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 73/02 (2006.01) C08F 8/06 (2006.01)
Patent
CA 2168208
The present invention relates to a process for the N-oxidation of polyamine polymers comprising treating said polyamine polymers with an effective amount of hydrogen peroxide in an aqueous or partly aqueous solution in the presence of heavy metal ion sequestrant and a metal oxide catalyst selected from tungstate, molybdate and vanadate.
La présente invention porte sur un procédé d'oxydation en N de polyamines polymériques, consistant à traiter ces polymères avec une quantité efficace de peroxyde d'hydrogène dans une solution aqueuse ou partiellement aqueuse, en présence d'un séquestrant à base d'ion de métal lourd et d'un catalyseur à base d'un oxyde de métal, choisi parmi un tungstate, un molybdate et un vanadate.
Hardy Frederick Edward
Rowland Geoffrey William
Willey Alan David
Kirby Eades Gale Baker
The Procter & Gamble Company
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