Synthetic resin composition with lubricative underwater properties containing RBC or CRBC fine powder

Abstract

According to the invention, a synthetic resin composition having a desirable a low coefficient of friction when submersed in a liquid is provided. In addition, a method of making a low friction bearing for use under liquid is provided as well as a low friction bearing or use underwater. According to the invention, a synthetic resin composition with lubricative underwater properties is provided. A powder preferably a fine powder of a RBC, CRBC or both are uniformly dispersed in a synthetic resin. Desirably the weight ratio between RBC or CRBC powders and the synthetic resin is 30:90 to 70:10.

1 - 19 . cancelled.  
     
     
         20 . A synthetic resin composition with lubricative underwater properties comprising a fine powder of RBC, CRBC or both uniformly dispersed in a synthetic resin, fabricating an article of manufacture having a low coefficient of friction underwater from said synthetic resin and immersing said article underwater.  
     
     
         21 . The synthetic resin composition with lubricative underwater properties according to  claim 20  wherein a weight ratio between the fine powder of a RBC or CRBC and synthetic resin is 30:90 to 70:10.  
     
     
         22 . The synthetic resin composition with lubricative underwater properties according to  claim 21  wherein said synthetic resin is a thermoplastic resin.  
     
     
         23 . A synthetic resin composition with lubricative underwater properties according to  claim 22  wherein the synthetic resin is a resin or a mixture of two or more resins selected from a group consisting of nylon-66, nylon-6, nylon-11, nylon-12, polyacetal, polybutyleneterephthalate, polyethyleneterephthalate, polypropylene, polyethylene and polyphenylenesulfide.  
     
     
         24 . A synthetic resin composition with lubricative underwater properties according to  claim 21  further comprising a thermosetting resin.  
     
     
         25 . A synthetic resin composition with lubricative underwater properties according to  claim 21  wherein said fine powder RBC or CRBC has an average particle diameter of 300 μm or less.  
     
     
         26 . A synthetic resin composition with lubricative underwater properties according to  claim 21  said RBC or CRBC has particle diameter of 10 to 50 μm.  
     
     
         27 . A bearing with lubricative underwater properties comprising a fine powder of a RBC, CRBC or both uniformly dispersed in a synthetic resin and molded to form said bearing and immersing said bearing under liquid.  
     
     
         28 . The bearing with lubricative underwater properties according to  claim 27  wherein a weight ratio between the fine powder of a RBC or CRBC and synthetic resin is 30:90 to 70:10.  
     
     
         29 . The bearing with lubricative underwater properties according to  claim 28  wherein said synthetic resin is a thermoplastic resin.  
     
     
         30 . A bearing with lubricative underwater properties according to  claim 28  wherein the synthetic resin is a resin or a mixture of two or more resins selected from a group consisting of nylon-66, nylon-6, nylon-11, nylon-12, polyacetal, polybutyleneterephthalate, polyethyleneterephthalate, polypropylene, polyethylene and polyphenylenesulfide.  
     
     
         31 . The bearing with lubricative underwater properties according to  claim 28  further comprising a thermosetting resin.  
     
     
         32 . The bearing with lubricative underwater properties according to  claim 28  wherein said RBC and CRBC fine powder has an average particle diameter of 300 μm or less.  
     
     
         33 . The bearing with lubricative underwater properties according to  claim 28  wherein the RBC and CRBC fine powder has an average particle diameter of 10 to 50 μm.  
     
     
         34 . The bearing according to  claim 27  wherein said bearing is immersed underwater.