Process for stabilizing solutions of hexavalent chromium...

Details Process for stabilizing solutions of hexavalent chromium... Process for stabilizing solutions of hexavalent chromium...

C - Chemistry, Metallurgy

07

F

260/453.1

C07F 11/00 (2006.01) B21D 53/16 (2006.01)

Patent

CA 1144559

PRECIS DE LA DIVULGATION: La présente invention se rapporte à un procédé de stabi- lisation au vieillissement des solutions de dérivés organiques du chrome hexavalent. De procédé est caractérisé en ce que l'on ajoute aux dites solutions un ester phosphorique com- portant au moins un groupement acide libre et soluble dans le solvant hydrocarboné. Le procédé permet en particulier de stabiliser de manière très satisfaisante les solutions cyclo- hexaniques de chromate de tertiobutyle.

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