Non-scratch abrasive composite and abrasive cleaning article

Abstract

The present invention is a structured abrasive article including a substrate having a first major surface and a second major surface, and a plurality of shaped abrasive composites. Each of the shaped abrasive composites includes a bottom surface in contact with the first major surface of the substrate. Each of the bottom surfaces takes the shape of a concave polygon and each of the concave polygons has a convex hull having n sides.

What is claimed is: 
     
         1 . A structured abrasive article comprising:
 a substrate having a first major surface and a second major surface; and   a plurality of shaped abrasive composites,   wherein each of the shaped abrasive composites comprises a bottom surface in contact with the first major surface of the substrate, wherein each of the bottom surfaces takes the shape of a concave polygon, and wherein each of the concave polygons has a convex hull having n sides.   
     
     
         2 . The structured abrasive article of  claim 1 , wherein the value of n is 3. 
     
     
         3 . The structured abrasive article of  claim 1 , wherein the bottom surface has the shape of a star polygon. 
     
     
         4 . The structured abrasive article of  claim 3 , wherein the bottom surface has the shape of a regular star polygon. 
     
     
         5 . The structured abrasive article of  claim 1 , wherein each of the shaped abrasive composites has a top surface defined as a point, line, or plane. 
     
     
         6 . The structured abrasive article of  claim 1 , wherein the shaped abrasive composites may be different shapes or sizes. 
     
     
         7 . The structured abrasive article of  claim 1 , wherein the shaped abrasive composites are arranged in an ordered pattern. 
     
     
         8 . The structured abrasive article of  claim 1 , wherein the shaped abrasive composites are arranged in a disordered pattern. 
     
     
         9 . The structured abrasive article of  claim 1 , wherein a longest diagonal of the bottom surface is between 0.3 mm and 6 mm long. 
     
     
         10 . A structured abrasive article comprising:
 a substrate having a first major surface and a second major surface; and   at least one shaped abrasive composite having a bottom surface,   wherein the bottom surface of the at least one shaped abrasive composite is positioned on the first major surface of the substrate,   and wherein the bottom surface of the shaped abrasive composite has at least one internal concave angle.   
     
     
         11 . The structured abrasive article of  claim 10 , wherein the bottom surface of the shaped abrasive composite has between 1 and n vertices with internal concave angles. 
     
     
         12 . The structured abrasive article of  claim 10 , wherein the bottom surface has the shape of a star polygon. 
     
     
         13 . The structured abrasive article of  claim 10 , wherein each of the shaped abrasive composite has a top surface defined as a point, line, or plane. 
     
     
         14 . The structured abrasive article of  claim 10 , comprising a plurality of shaped abrasive composites. 
     
     
         15 . The structured abrasive article of  claim 14 , wherein the shaped abrasive composites may be structured shapes or sizes. 
     
     
         16 . The shaped abrasive article of  claim 14 , wherein the shaped abrasive composites are arranged in an ordered pattern. 
     
     
         17 . The article of  claim 14 , wherein the shaped abrasive composites are arranged in a disordered pattern. 
     
     
         18 . The shaped abrasive of  claim 14 , wherein the shaped abrasive composites form a non-continuous layer along the first major surface of the substrate. 
     
     
         19 . A shaped abrasive composite comprising:
 a binder phase; and   a particulate grain phase dispersed within the binder phase,   wherein the shaped abrasive composite has at least one internal concave angle.   
     
     
         20 . The shaped abrasive composite of  claim 19 , wherein the shaped abrasive composite has at least three internal concave angles.