Coating Composition For Sliding Members

Abstract

A coating composition for a sliding member, wherein from 30 to 120 parts by weight of a solid lubricant and from 5 to 80 parts by weight of a silicone resin are included per 100 parts by weight of a film-forming organic resin. As a result of forming the film on the surface of the sliding member, a coating composition for a sliding member is provided whereby low frictional drag can be maintained for an extended period of time, and the sticking of the sliding member to glass surfaces and similar smooth surfaces can be prevented.

1 . A coating composition for a sliding member, the coating composition comprising: a film-forming organic resin, a solid lubricant, and a silicone resin. 
     
     
         2 . The coating composition of  claim 1 , wherein from 30 to 120 parts by weight of the solid lubricant and from 5 to 80 parts by weight of the silicone resin are included per 100 parts by weight of the film-forming organic resin. 
     
     
         3 . The coating composition of  claim 1 , wherein a weight ratio of the silicone resin to the solid lubricant is in a range from 0.1 to 0.8. 
     
     
         4 . The coating composition of  claim 1 , wherein the silicone resin has from 0.05 wt. % to 15 wt. % of silicon-bonded hydroxyl groups. 
     
     
         5 . The coating composition of  claim 1 , wherein the silicone resin is a silicone resin powder that does not have a softening point. 
     
     
         6 . The coating composition of  claim 1 , wherein a breaking elongation at a pulling speed of 10 mm/minute of an organic resin film, obtained from the film-forming organic resin, having a thickness of from 20 to 30 μm and a width of 10 mm, is not less than 100%. 
     
     
         7 . The coating composition of  claim 1 , in combination with the sliding member, wherein the sliding member is rubber. 
     
     
         8 . A coated body provided with a coating film comprising a coating composition for a sliding member described in  claim 1  on a surface thereof. 
     
     
         9 . A rubber member provided with a coating film comprising a coating composition for a sliding member described in  claim 7  on a surface thereof. 
     
     
         10 . The coating composition of  claim 2 , wherein a weight ratio of the silicone resin to the solid lubricant is in a range from 0.1 to 0.8. 
     
     
         11 . The coating composition of  claim 2 , wherein the silicone resin has from 0.05 wt. % to 15 wt. % of silicon-bonded hydroxyl groups. 
     
     
         12 . The coating composition of  claim 3 , wherein the silicone resin has from 0.05 wt. % to 15 wt. % of silicon-bonded hydroxyl groups. 
     
     
         13 . The coating composition of  claim 10 , wherein the silicone resin has from 0.05 wt. % to 15 wt. % of silicon-bonded hydroxyl groups. 
     
     
         14 . The coating composition of  claim 2 , wherein the silicone resin is a silicone resin powder that does not have a softening point. 
     
     
         15 . The coating composition of  claim 3 , wherein the silicone resin is a silicone resin powder that does not have a softening point. 
     
     
         16 . The coating composition of  claim 4 , wherein the silicone resin is a silicone resin powder that does not have a softening point.