Lubricant composition

Abstract

A lubricant composition includes a base oil and melamine cyanurate. The base oil includes a perfluoropolyether oil having a straight chain structure. The lubricant composition is for one of a resin-resin sliding section and a resin-metal sliding section. A melamine cyanurate content is within a range of 1-20% by mass with respect to a sum of the base oil and melamine cyanurate.

What is claimed is: 
     
         1 . A lubricant composition comprising a base oil and melamine cyanurate, the base oil including a perfluoropolyether oil having a straight chain structure, the lubricant composition being for one of a resin-resin sliding section and a resin-metal sliding section,
 wherein a melamine cyanurate content is within a range of 1-20% by mass with respect to a sum of the base oil and melamine cyanurate.   
     
     
         2 . The lubricant composition according to  claim 1 , wherein the melamine cyanurate content is within a range of 5-12% by mass with respect to a sum of the base oil and melamine cyanurate. 
     
     
         3 . The lubricant composition according to  claim 1 , wherein the perfluoropolyether oil does not have a repeat unit represented by —(CF 2 O)—. 
     
     
         4 . The lubricant composition according to  claim 1 , wherein the perfluoropolyether oil is represented by the following general formula (I):
   F(CF 2 CF 2 CF 2 O) n CF 2 CF 3   (i),
   where, in the above formula (I), n is an integer of 2 to 200.   
     
     
         5 . The lubricant composition according to  claim 1 , wherein an evaporation loss rate for the perfluoropolyether oil is less than or equal to 10% by mass at 200° C. for 100 hours. 
     
     
         6 . The lubricant composition according to  claim 1 , wherein the lubricant composition is for a one direction motion sliding section. 
     
     
         7 . The lubricant composition according to  claim 2 , wherein the perfluoropolyether oil does not have a repeat unit represented by —(CF 2 O)—. 
     
     
         8 . The lubricant composition according to  claim 2 , wherein the perfluoropolyether oil is represented by the following general formula (I):
   F(CF 2 CF 2 CF 2 O) n CF 2 CF 3   (i),
   where, in the above formula (I), n is an integer of 2 to 200.   
     
     
         9 . The lubricant composition according to  claim 2 , wherein an evaporation loss rate for the perfluoropolyether oil is less than or equal to 10% by mass at 200° C. for 100 hours. 
     
     
         10 . The lubricant composition according to  claim 2 , wherein the lubricant composition is for a one direction motion sliding section.