Composition containing graphite

Abstract

Composition comprising at least about 25% by weight graphite particles, based on the total solids content of the composition. The composition is useful, for example, as a coating on the backside of coated abrasive articles.

What is claimed is:  
     
         1 . A composition comprising: 
 binder precursor;    at least about 25% by weight graphite particles, based on the total solids content of the composition; and    second particles having a median diameter no greater than about 200 micrometers.    
     
     
         2 . The composition of  claim 1  comprising at least about 40% by weight graphite particles, based on the total solids content of the composition.  
     
     
         3 . The composition of  claim 1  comprising at least about 60% by weight graphite particles, based on the total solids content of the composition.  
     
     
         4 . The composition of  claim 1 , wherein said second particles are present in said composition in an amount of at least about 5% by weight, based on the total solids content of the composition.  
     
     
         5 . The composition of  claim 1 , wherein said second particles are present in said composition in an amount of at least about 10% by weight, based on the total solids content of the composition.  
     
     
         6 . The composition of  claim 1  said second particles are selected from the group consisting of calcium carbonate, carbon black, iron oxide, silica, silicates, clay, feldspar, mica, calcium silicate, calcium metasilicate, sodium aluminosilicate, sodium silicate, calcium sulfate, barium sulfate, sodium sulfate, aluminum sodium sulfate, aluminum sulfate, gypsum, vermiculite, aluminum trihydrate, aluminum oxide, titanium dioxide, cryolite, chiolite, metal sulfite, and mixtures thereof.  
     
     
         7 . The composition of  claim 1 , wherein said second particles are selected from the group consisting of calcium carbonate, carbon black and mixtures thereof.  
     
     
         8 . The composition of  claim 1 , wherein said second particles have a median diameter of no greater than about 100 micrometers.  
     
     
         9 . The composition of  claim 1 , wherein said composition has a viscosity no greater than about 20,000 cPs at a temperature of 25° C.  
     
     
         10 . The composition of  claim 1 , wherein said composition has a viscosity no greater than about 1000 cPs at a temperature of 25° C.  
     
     
         11 . The composition of  claim 1 , wherein said composition has a viscosity of no greater than about 600 cPs at a temperature of 25° C.  
     
     
         12 . The composition of  claim 1 , wherein said binder precursor comprises a resin selected from the group consisting of acrylic, acrylate, phenolic, epoxy, urethane, melamine-formaldehyde and combinations thereof.  
     
     
         13 . A composition comprising: 
 binder;    at least about 25% by weight graphite particles, based on the total solids content of the composition; and    second particles having a median diameter no greater than about 200 micrometers.    
     
     
         14 . The composition of  claim 13  comprising at least about 30% by weight graphite particles, based on the total solids content of the composition.  
     
     
         15 . The composition of  claim 13  comprising at least about 35% by weight graphite particles, based on the total solids content of the composition.  
     
     
         16 . The composition of  claim 13  comprising at least about 40% by weight graphite particles, based on the total solids content of the composition.  
     
     
         17 . The composition of  claim 13  comprising at least about 50% by weight graphite particles, based on the total solids content of the composition.  
     
     
         18 . The composition of  claim 13  comprising at least about 60% by weight graphite particles, based on the total solids content of the composition.  
     
     
         19 . The composition of  claim 13  comprising at least about 65% by weight graphite particles, based on the total solids content of the composition.  
     
     
         20 . The composition of  claim 13 , wherein said second particles are present in said composition in an amount of at least about 5% by weight, based on the total solids content of the composition.  
     
     
         21 . The composition of  claim 13 , wherein said second particles are present in said composition in an amount of at least about 10% by weight, based on the total solids content of the composition.  
     
     
         22 . The composition of  claim 13  said second particles are selected from the group consisting of calcium carbonate, carbon black, iron oxide, silica, silicates, clay, feldspar, mica, calcium silicate, calcium metasilicate, sodium aluminosilicate, sodium silicate, calcium sulfate, barium sulfate, sodium sulfate, aluminum sodium sulfate, aluminum sulfate, gypsum, vermiculite, aluminum trihydrate, aluminum oxide, titanium dioxide, cryolite, chiolite, metal sulfite, and mixtures thereof.  
     
     
         23 . The composition of  claim 13 , wherein said second particles are selected from the group consisting of calcium carbonate, carbon black and mixtures thereof.  
     
     
         24 . The composition of  claim 13 , wherein said second particles have a median diameter of no greater than about 100 micrometers.  
     
     
         25 . The composition of  claim 13  having an electrical resistivity of no greater than 2000 ohms per square.  
     
     
         26 . The composition of  claim 13  having an electrical resistivity no greater than 100 ohms per square.  
     
     
         27 . The composition of  claim 13 , wherein when said composition is tested according to the Platen Compatibility Test Method, the platen of said test method experiences a temperature of no greater than 100° C.  
     
     
         28 . The composition of  claim 13 , wherein when said composition is tested according to the Platen Compatibility Test Method, the platen of said test method experiences a temperature of no greater than 90° C.  
     
     
         29 . The composition of  claim 13 , wherein when said composition is tested according to the Platen Compatibility Test Method, the platen of said test method experiences a temperature of no greater than 85° C.  
     
     
         30 . A composition comprising: 
 binder precursor selected from the group consisting of acrylic, acrylate, phenolic, epoxy, melamine-formaldehyde and combinations thereof; and    at least 37% by weight graphite particles, based on the total solids content of the composition.    
     
     
         31 . The composition of  claim 30 , wherein said composition has a viscosity of no greater than about 20,000 cPs at a temperature of 25° C.  
     
     
         32 . The composition of  claim 30 , wherein said composition has a viscosity of no greater than about 15,000 cPs at a temperature of 25° C.  
     
     
         33 . The composition of claim  303 , wherein said composition has a viscosity of no greater than about 10,000 cPs at a temperature of 25° C.  
     
     
         34 . The composition of  claim 30 , wherein said composition has a viscosity of no greater than about 5,000 cPs at a temperature of 25° C.  
     
     
         35 . The composition of  claim 30 , wherein said composition has a viscosity of no greater than about 1000 cPs at a temperature of 25° C.  
     
     
         36 . The composition of  claim 30 , wherein said composition has a viscosity of no greater than about 600 cPs at a temperature of 25° C.  
     
     
         37 . The composition of  claim 30  further comprising a second plurality of particles selected from the group consisting of calcium carbonate, carbon black, iron oxide, silica, silicates, clay, feldspar, mica, calcium silicate, calcium metasilicate, sodium aluminosilicate, sodium silicate, calcium sulfate, barium sulfate, sodium sulfate, aluminum sodium sulfate, aluminum sulfate, gypsum, vermiculite, aluminum trihydrate, aluminum oxide, titanium dioxide, cryolite, chiolite, metal sulfite and mixtures thereof  
     
     
         38 . The composition of  claim 30  further comprising calcium carbonate and carbon black particles.  
     
     
         39 . The composition of  claim 30  further comprising second particles, said second particles having a median diameter no greater than about 100 micrometers.  
     
     
         40 . A composition comprising: 
 binder selected from the group consisting of acrylic, acrylate, phenolic, epoxy, melamine-formaldehyde and combinations thereof; and    at least 37% by weight graphite particles, based on the total solids content of the composition.    
     
     
         41 . The composition of  claim 40  further comprising a second plurality of particles selected from the group consisting of calcium carbonate, carbon black, iron oxide, silica, silicates, clay, feldspar, mica, calcium silicate, calcium metasilicate, sodium aluminosilicate, sodium silicate, calcium sulfate, barium sulfate, sodium sulfate, aluminum sodium sulfate, aluminum sulfate, gypsum, vermiculite, aluminum trihydrate, aluminum oxide, titanium dioxide, cryolite, chiolite, metal sulfite and mixtures thereof  
     
     
         42 . The composition of  claim 40  further comprising calcium carbonate and carbon black particles.  
     
     
         43 . The composition of  claim 40  further comprising second particles, said second particles having a median diameter no greater than about 100 micrometers.  
     
     
         44 . The composition of  claim 40  having an electrical resistivity of no greater than 2000 ohms per square.  
     
     
         45 . The composition of  claim 40  having an electrical resistivity no greater than 100 ohms per square.  
     
     
         46 . The composition of  claim 40 , wherein when said composition is tested according to the Platen Compatibility Test Method, the platen of said test method experiences a temperature of no greater than 100IC.  
     
     
         47 . A composition comprising: 
 an acrylic binder precursor; and    at least 37% by weight graphite particles, based on the total solids content of the composition.    
     
     
         48 . A composition comprising: 
 an acrylic binder; and    at least 37% by weight graphite particles, based on the total solids content of the composition.    
     
     
         49 . A coated abrasive article comprising: 
 backing having a first major surface and a second major surface opposite said first major surface;    a first layer disposed on said first major surface of said backing, said first layer comprising abrasive particles and binder; and    a second layer disposed on a second major surface of said backing, said second layer comprising a composition comprising: 
 binder;  
 at least about 25% by weight graphite particles, based on the total solids content of the composition; and  
   second particles having a median diameter no greater than about 200 micrometers.    
     
     
         50 . The coated abrasive article of  claim 49  comprising at least about 30% by weight graphite particles, based on the total solids content of the composition.  
     
     
         51 . The coated abrasive article of  claim 49  comprising at least about 40% by weight graphite particles, based on the total solids content of the composition.  
     
     
         52 . The coated abrasive article of  claim 49  comprising at least about 50% by weight graphite particles, based on the total solids content of the composition.  
     
     
         53 . The coated abrasive article of  claim 49  comprising at least about 60% by weight graphite particles, based on the total solids content of the composition.  
     
     
         54 . A coated abrasive article comprising: 
 backing having a first major surface and a second major surface opposite said first major surface;    a first layer disposed on said first major surface of said backing, said first layer comprising abrasive particles and binder; and    a second layer disposed on a second major surface of said backing, said second layer comprising a composition comprising: 
 binder selected from the group consisting of acrylic, acrylate, phenolic, epoxy, melamine-formaldehyde, urethane, neoprene, and combinations thereof; and  
 at least 37% by weight graphite particles, based on the total solids content of the composition,.  
   
     
     
         55 . A method of making a coated abrasive article, said method comprising: 
 providing a backing having a first major surface and a second major surface opposite said first major surface;    applying an abrasive layer on said first major surface, said abrasive layer comprising binder and abrasive particles; and    applying a composition onto said second major surface of the backing, said composition comprising binder, at least about 25% by weight graphite particles, based on the total solids content of the composition, and second particles having a median diameter no greater than about 200 micrometers.    
     
     
         56 . A method of making a coated abrasive article, said method comprising: 
 providing a backing having a first major surface and a second major surface opposite said first major surface;    applying an abrasive layer on said first major surface, said abrasive layer comprising binder and abrasive particles; and    applying a composition onto said second major surface of the backing, said composition comprising a binder precursor selected from the group consisting of acrylic, acrylate, phenolic, epoxy, melamine-formaldehyde, urethane, neoprene, and combinations thereof, and at least 37% by weight graphite particles based on the total solids content of the composition.    
     
     
         57 . An article comprising: 
 a substrate; and    a composition disposed on said substrate, said composition comprising binder, at least about 25% by weight graphite particles, based on the total solids content of the composition and second particles having a median diameter no greater than about 200 micrometers.    
     
     
         58 . An article comprising: 
 a substrate; and    a composition disposed on said substrate, said composition comprising acrylic binder, and at least 37% by weight graphite particles, based on the total solids content of the composition.    
     
     
         59 . A method of abrading a workpiece using an apparatus comprising 
 a platen, and    an endless belt,    said belt having a first major surface and a second major surface opposite said first major surface, said belt comprising an abrasive coating disposed on the first major surface of said belt and a second coating comprising a composition disposed on the second major surface of said belt, said composition of said second coating comprising at least about 25% by weight graphite particles, based on the total solids content of the composition and second particles having a median diameter no greater than about 200 micrometers, said second coating being in contact with the platen, said method comprising:    abrading the workpiece with the abrasive surface of said belt, wherein the temperature of said platen is no greater than 100° C. during said abrading.    
     
     
         60 . A method of abrading a workpiece using an apparatus comprising 
 a platen, and    an endless belt, 
 said belt having a first major surface and a second major surface opposite said first major surface, said belt comprising an abrasive coating disposed on the first major surface of said belt and a second coating comprising a composition disposed on the second major surface of said belt, said composition of said second coating comprising binder precursor selected from the group consisting of acrylic, acrylate, phenolic, epoxy, melamine-formaldehyde, urethane, neoprene, and combinations thereof, and at least 37% by weight graphite particles, based on the total solids content of the composition, said second coating being in contact with the platen, said method comprising: 
 abrading the workpiece with the abrasive surface of said belt, wherein the temperature of said platen is no greater than 100° C. during said abrading.