Inventors:
Daniel R. Dutton - Woodhaven MI
John W. Compton - Taylor MI
Assignee:
BASF Wyandotte Corporation - Wyandotte MI
International Classification:
C09K 500, C23F 1112
Abstract:
A novel antifreeze composition is provided which comprises a water soluble liquid alcohol freezing point depressant and an inhibitor. The freezing point depressant is preferably at least one water soluble alcohol containing from one to four carbon atoms inclusive and from one to four hydroxy groups inclusive such as ethylene glycol. The inhibitor comprises at least one substance selected from the group consisting of
A. compounds corresponding to the following structural formula: ##SPC1##
Wherein R. sub. 1 is an alkylene radical containing from zero to 12 carbon atoms inclusive, R. sub. 2 is an alkyl radical containing from one to 10 carbon atoms inclusive and R. sub. 3 is an alkylene radical containing from one to 12 carbon atoms inclusive, and
B. the mono- and di-metal salts, the mono- and di-ammonium salts, and the mono- and di-amides of compounds corresponding to the above structural formula. The presently preferred inhibitor comprises 1-carboxy-2-hexyl-5-(7-carboxyheptyl)-cyclohex-3-ene, or the mono- and di-metal salts, ammonium salts, and amides thereof.