Heat transfer fluid containing salts of dicarboxylic...

Details Heat transfer fluid containing salts of dicarboxylic... Heat transfer fluid containing salts of dicarboxylic...

C - Chemistry, Metallurgy

09

K

31/36

C09K 5/00 (2006.01) C09K 5/20 (2006.01) C23F 11/12 (2006.01)

Patent

CA 1242873

Abstract of the Disclosure The invention relates to a process making it possible to reduce the corrosion of metals and alloys of heat exchanger circuits where aqueous heat transfer fluids are circulating and which may contain anti-freeze products. The process consists in mixing with these aqueous heat transfer fluids on the one hand from 0.05 to 5 per cent by weight of one or more salts of alkali metals or of amines of dicarboxylic aliphatic acids of the formula (CH2)n(COOH)2 in which n is comprised between 2 and 10 and on the other hand from 0.05 to 2.5 per cent by weight of one or more polyols comprising a number of carbon atoms between 5 and 12 and a number of alcohol functions between 5 and 12 and possessing no reducing power.

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