C - Chemistry – Metallurgy – 09 – K
Patent
C - Chemistry, Metallurgy
09
K
C09K 5/00 (2006.01) C09K 5/20 (2006.01) C23F 11/12 (2006.01)
Patent
CA 2269887
An anti-freeze concentrate made by adding together at least: a) an alkylene glycol; b) an effective corrosion inhibiting amount, or more, of an unsubstituted benzoic acid; and c) an effective corrosion inhibiting amount, or more, of a C7-C14 monocarboxylic acid. This formulation is particularly effective at inhibiting corrosion in coolants which are free of borates, primary and secondary amines, phosphates, silicates, as well as those coolants which are free of p-tertbutyl benzoic acid.
Pabon Raul Antonio Jr.
Prieto Nelson Eduardo
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
Shell Internationale Research Maatschappij B.v.
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