BIODEGRADABLE GREASE COMPOSITION

摘要

PROBLEM TO BE SOLVED: To provide a grease composition having long life in high temperature use and excellent peeling life and easily disposable without giving adverse influence on the human body and environment. SOLUTION: The biodegradable grease composition is produced by compounding a base oil containing a polyol ester oil in an amount of≥60 mass% based on the total grease and having a kinetic viscosity of 25-50 mm2/s at 40°C with a diurea compound of general formula (1) as a thickening agent in an amount of 10-25 mass% based on the total grease and phenothiazine or a phenothiazine derivative as an antioxidant in an amount of 0.2-10 mass% based on the total grease. COPYRIGHT: (C)2004,JPO