Patent ID: 8329625
Filing Date: 2012-12-11
Classification: C10M,C10N

Abstract:
1. An aqueous functional fluid consisting of a) 0.2 to 1.0 wt. % 4-hydroxyphenylpropionic acid ester b) 20 to 80 wt. % water soluble polyalkylene glycol or mixtures thereof having a viscosity range according to ASTM D445 at 40° C. between 40,000 and 55,000 (cSt) and at 100° C. between 7,300 and 7,800 (cSt), pour point according to ASTM D97 of 7° C., flash point (open cup) of 240° C.; and c) water, wherein the wt. % is based on the total weight of the composition.