Patent ID: 7927505

Claim:
An antifreeze/anticorrosion concentrate comprising glycerol, wherein the amount of glycerol is from 15 to 35% by weight based on the total amount of the concentrate; ethylene glycol, wherein the sum of the amounts of the ethylene glycol and the glycerol is at least 75% by weight based on the total amount of the concentrate; and an anticorrosion component, wherein the amount of anticorrosion component is from 1 to 70% by weight based on the total amount of the concentrate: wherein the anticorrosion component comprises: (a) up to 5% by weight of one or more aliphatic, cycloaliphatic or aromatic monocarboxylic acids having in each case from 3 to 16 carbon atoms in the form of their alkali metal, ammonium or substituted ammonium salts, and (b) up to 1% by weight of one or more alkali metal borates, alkali metal phosphates, alkali metal silicates, alkali metal nitrites, alkali metal or alkaline earth metal nitrates, alkali metal molybdates or alkali metal or alkaline earth metal fluorides.