| abstract |
A fluorine-containing grease composition comprising a halogen-containing polyether of the formula: -(CH2CF2CF2O)a-(CHClCF2CF2O)b-(CCl2CF2CF2O)c-(CHFCF2CF2O)d-(CFClCF2CF2 O)e-(CF2CF2CF2O)f-(I) wherein a, b, c, d, e and f are each an integer not less than 0 and satisfy the following equations: 2</=a+b+c+d+e+f</=200 and, 1</=a+c+d+f and 0.5 to 60% by weight of a fluororesin base on the weight of the whole composition, which has good chemical and heat resistance and is used in a high temperature environment. |