Coated abrasive article including biodegradable thermoset resin and method of making and using the same

Abstract

A coated abrasive article comprises a backing having a major surface and an abrasive layer disposed on and secured to at least a portion of the major surface of the backing. The abrasive layer comprises a binder material at least partially retaining abrasive particles and comprising a first water-soluble crosslinked polyester. Methods of making the coated abrasive article are also disclosed.

1 . A coated abrasive article comprising:
 a backing having a major surface; and   an abrasive layer disposed on and secured to at least a portion of the major surface of the backing, wherein the abrasive layer comprises a first binder material at least partially retaining abrasive particles and comprising a first water-soluble crosslinked polyester.   
     
     
         2 . The coated abrasive article of  claim 1 , wherein the abrasive layer comprises:
 a make layer comprising the first binder material secured to the backing, wherein the abrasive particles are partially embedded in the make layer; and   a size layer comprising a second binder material overlaying and secured to the make layer and the abrasive particles.   
     
     
         3 . The coated abrasive article of  claim 1 , wherein the abrasive layer wherein the abrasive particles are dispersed throughout the first binder material. 
     
     
         4 . The coated abrasive article of  claim 1 , wherein the second binder material comprises a second water-soluble crosslinked polyester. 
     
     
         5 . The coated abrasive article of  claim 1 , wherein the first water-soluble crosslinked polyester comprises a first condensation polymer of components comprising a naturally occurring polyol and a naturally occurring polycarboxylic acid. 
     
     
         6 . The coated abrasive article of  claim 1 , wherein the first water-soluble crosslinked polyester comprises a condensation polymer of components comprising a biodegradable polyol and a biodegradable polycarboxylic acid. 
     
     
         7 . The coated abrasive article of  claim 6 , wherein the biodegradable polyol comprises at least three hydroxyl groups. 
     
     
         8 . The coated abrasive article of  claim 6 , wherein the biodegradable polycarboxylic acid comprises at least three carboxyl groups. 
     
     
         9 . The coated abrasive article of  claim 6 , wherein the biodegradable polyol comprises glycerol and the biodegradable polycarboxylic acid comprises citric acid. 
     
     
         10 . The coated abrasive article of  claim 1 , wherein the backing comprises at least one of paper or a polymer film. 
     
     
         11 . The coated abrasive article of  claim 1 , wherein the coated abrasive article comprises a coated abrasive disc or a coated abrasive endless belt. 
     
     
         12 . (canceled) 
     
     
         13 . A method of making a coated abrasive article, the method comprising:
 a) providing a backing having first and second opposed major surfaces   b) disposing a curable precursor make layer on the first major surface of the backing, wherein the curable precursor make layer comprises a first curable water-soluble polyester;   c) embedding abrasive particles in the curable precursor make layer; and   d) at least partially curing the curable precursor make layer to provide an at least partially cured make layer.   
     
     
         14 . The method of  claim 13 , further comprising
 e) disposing a curable precursor size layer onto the at least partially cured make layer and the abrasive particles; and   f) at least partially curing the curable precursor size layer.   
     
     
         15 . The method of  claim 14 , wherein the curable precursor size layer comprises a second binder material comprising a second curable water-soluble polyester. 
     
     
         16 . A method of making a coated abrasive article, the method comprising:
 a) providing a backing having first and second opposed major surfaces   b) disposing a layer of curable precursor slurry on the first major surface of the backing, wherein the curable precursor slurry layer comprises abrasive particles and a first curable water-soluble polyester; and   c) at least partially curing the curable precursor slurry.   
     
     
         17 . The method of  claim 16 , wherein the first curable water-soluble polyester comprises a condensation polymer of components comprising a naturally occurring polyol and a naturally occurring polycarboxylic acid. 
     
     
         18 . The method of  claim 16 , wherein the first curable water-soluble polyester comprises a condensation polymer of components comprising a biodegradable polyol and a biodegradable polycarboxylic acid. 
     
     
         19 . The method of  claim 18 , wherein the biodegradable polyol comprises at least three hydroxyl groups. 
     
     
         20 . (canceled) 
     
     
         21 . (canceled) 
     
     
         22 . The method of  claim 16 , wherein the backing comprises at least one of paper or polymer film.