POWER TRANSMISSION FLUID WITH ENHANCED ANTI-SHUDDER CHARACTERISTIC

摘要

PROBLEM TO BE SOLVED: To provide a power transmission fluid with improved characteristics. SOLUTION: The fluid comprises a base oil and a viscosity index improving amount of a polyisoalkylene component having a molecular weight ranging from about 300 to about 3000 weight average molecular weight as determined by gel permeation chromatography. The power transmission fluid exhibits a kinematic viscosity (KV at 100°C) of less than about 9 centistokes and a Brookfield viscosity (BV at -40°C) of less than about 30,000 centipoise. Also, the friction versus velocity curve for the fluid has a more positive slope at high speeds compared to similar fluids each containing no polyisoalkylene component. COPYRIGHT: (C)2005,JPO&NCIPI