Antifreeze concentrate based on alkylene glycols, e.g. useful in magnesium or aluminum automobile engines, includes a sulfonated or sulfated polyglycol, a carbamate, an amine and a hydrocarbyl triazole

摘要

Antifreeze concentrate based on alkylene glycols includes 0.05-10 wt.% of a sulfonated or sulfated polyglycol (I), 0.05-5 wt.% of a carbamate (II) or corresponding ammonium salt, 0.05-5 wt.% of an aliphatic or aromatic amine and 0.01-1 wt.% of a hydrocarbyl triazole. Antifreeze concentrate based on alkylene glycols includes 0.05-10 wt.% of a sulfonated or sulfated polyglycol of formula (I), 0.05-5 wt.% of a carbamate of formula (II) or corresponding ammonium salt, 0.05-5 wt.% of an aliphatic or aromatic amine and 0.01-1 wt.% of a hydrocarbyl triazole. [Image] A : 2-4C alkylene; R : H, 1-10C alkyl, 2-20C alkenyl or 6-18C aryl; X : H or alkali(ne earth) metal; k : 0-10; l : 0 or 1; m : 1-200; X : O or S; and R' : 1-8C alkyl or 6-18C aryl. An independent claim is also included for an antifreeze comprising 10-90 wt.% of the concentrate in water.