USE OF QUATERNIZED IMIDAZOLES AS CORROSION INHIBITORS OF NON-FERROUS METALS, AND CONCENTRATES OF ANTIFREEZE AGENTS AND REFRIGERANT COMPOSITIONS CONTAINING THESE.

摘要

EMPLOYMENT OF IMIDAZOLES (I) QUATERNIZED, IN WHICH R 1 AND R 3, INDEPENDENTLY BETWEEN THEM, REPRESENT RADICA LES OF SATURATED OR UNSATURATED HYDROCARBONS, WITH 1 TO 12 CARBON ATOMS, WHICH MAY BE SUBSTITUTED BY GROUPS THAT HAVE ONE OR THAT THEY MAY BE INTERRUPTED BY NON-ADJACENT OXYGEN ATOMS; R 2, R 4 AND R 5, INDEPENDENTLY BETWEEN THEM, MEAN HYDROGEN OR SATURATED OR UNSATURATED HYDROCARBONS, WITH 1 TO 12 CARBON ATOMS, WHICH MAY BE REPLACED BY GROUPS THAT HAVE AN OXYGEN FUNCTION OR MAY BE OF NON-ADJACENT OXYGEN, WHOSE EFFECT R 4 YR SUP, 5 MAY FORM TOGETHER A CYCLE OF FIVE OR SIX MEMBERS TOGETHER WITH THE CORRESPONDING CARBON ATOMS OF IMIDAZOLE, AND XZT IS FOR AN ANION. THESE SUBSTANCES ARE USED AS INHIBITORS FOR THE CORROSION OF NON-FERROUS METALS, ESPECIALLY FOR THE PROTECTION OF RADIATORS IN THE AUTOMOBILE SECTOR.