OSP-CONTAINING COMPOSITION FOR AUTOMOTIVE BRAKE FLUIDS

摘要

The present invention relates to an automobile brake fluid composition and, more particularly, to an automobile brake fluid composition including: 30 to 60 wt% of boric acid ester compound; 30 to 60 wt% of alkylene glycol alkyl ether; and 0.05 to 10 wt% of fatty polyalkylene glycol (OSP). The OSP-containing automobile brake fluid composition according to the present invention allows a high boiling point of a brake fluid to be maintained for a long period of time by reducing an atmospheric moisture absorption amount of the brake fluid, and thus can lengthen a brake fluid replacement cycle and can improve corrosion prevention performance, metallic wear resistance, and master cylinder operation.