Heat exchange compositions

Claim 1

AN ANTIFREEZE COMPOSITION CONSISTING ESSENTIALLY OF A WATER-SOLUBLE ALCOHOL SELECTED FROM THE GROUP CONSISTING OF ETHYLENE GLYCOL AND METHANOL AS THE CHIEF NONAQUEOUS INGREDIENT AND AND ANTICORROSION AGENT COMPRISING AS THE ESSENTIAL ANTICORROSIVE COMPONENTS FROM ABOUT 0.2% TO ABOUT 77% OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF BENZOTRIAZOLE, ALKALI METAL AND AMMONIUM SALTS OF BENZOTRIAZOLE, MIXTURES OF ALKALI METAL AND AMMONIUM SALTS OF BENZOTRIAZOLE, AND N-ALKYL BENZOTRIAZOLE, FROM ABOUT 2.2% TO ABOUT 80% OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL ARSENITES, ALKALI METAL ARSENATES, ALKALI METAL MOLYBDATES, AND MIXTURES THEREOF, AND FROM ABOUT 11% TO ABOUT 96% OF A MATERIAL SUITABLE FOR MAINTAINING THE PH OF AN AQUEOUS SOLUTION OF THE SAID ANTICORROSION AGENT WITHIN THE RANGE OF FROM ABOUT 7.5 TO ABOUT 10.5, WHICH ANTICORROSION AGENT IS PRESENT IN THE ANTIFREEZE COMPOSITION IN AN AMOUNT SUFFICIENT TO PRODUCE CONCENTRATIONS OF FROM ABOUT 0.01% TO ABOUT 2.0% OF THE BENZOTRIAZOLE COMPOUND, FROM ABOUT 0.1% TO ABOUT 2.0% OF THE MEMBER SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL ARSENITES, ALKALI METAL ARSENATES, ALKALI METAL MOLYBDATES, AND MIXTURES THEREOF, AND FROM ABOUT 0.5% TO ABOUT 2.5% OF THE MATERIAL SUITABLE FOR MAINTAINING THE PH OF THE FINISHED BEAT EXCHANGE MEDIUM WITHIN THE RANGE OF FROM ABOUT 7.5 TO 10.5 BASED ON THE WEIGHT OF THE WATERSOLUBLE ALCOHOL.