Amino Resin Treated Backing Material, Coated Abrasive Articles Incorporating Same And Process Of Making The Same

Abstract

This invention relates an amino resin treated backing material comprising a backing material impregnated with an amino resin comprising an alkylated trimethylol melamine obtained by reaction of trimethylol melamine with alkanol, coated abrasive article comprising the same, and methods of making and using said amino resin composition and coated abrasive articles. The claimed processes and systems related to use and manufacturing of coated abrasive articles are improved and cost effective.

1 . An amino resin treated backing material comprising:
 an amino resin comprising a modified melamine formaldehyde resin having a formula   
       
         
           
           
               
               
           
         
         wherein R1, R2, R3 each represents an independent substituent selected from hydrogen and alkyl groups having one to four carbon atoms; and 
         a backing material, wherein said backing material is impregnated with said amino resin. 
       
     
     
         2 . An amino resin treated backing material comprising:
 an amino resin comprising an alkylated trimethylol melamine obtained by reaction of trimethylol melamine with alkanol; and   a backing material, wherein said backing material is impregnated with said amino resin.   
     
     
         3 . The amino resin treated backing material according to  claim 2 , wherein the alkanol has 1 to 4 carbon atoms. 
     
     
         4 . The amino resin treated backing material according to  claim 3 , wherein the alkanol is methanol. 
     
     
         5 . The amino resin treated backing material according to  claim 1 , wherein the backing material comprises a polyester fabric. 
     
     
         6 . The amino resin treated backing material according to  claim 5 , wherein the backing material further comprises cotton, viscose, polyamine, or combinations thereof. 
     
     
         7 . The amino resin treated backing material according to  claim 5 , wherein the polyester fabric comprises at least about 50 wt % polyester. 
     
     
         8 . The amino resin treated backing material according to  claim 1 , wherein the amount of impregnation is equal to an add-on weight of amino resin solution in a range from 10 g/m 2  to 300 g/m 2  of backing material. 
     
     
         9 . The amino resin treated backing material according to  claim 8 , wherein the add-on amino resin solution is cured at a temperature of at least 95° C. 
     
     
         10 . The amino resin treated backing material according to  claim 9 , wherein the add-on amino resin solution is cured at a temperature of not greater than 175° C. 
     
     
         11 . The amino resin treated backing material according to  claim 9 , wherein the add-on amino resin solution is at least partially cured. 
     
     
         12 . The amino resin treated backing material according to  claim 11 , wherein the backing material is tack free. 
     
     
         13 . The amino resin treated backing material according to  claim 12 , wherein the tack free cure time is within a range of 30 to 300 seconds. 
     
     
         14 . The amino resin treated backing material according to  claim 11 , wherein the tensile strength factor is within a range of 1.0 to 2.5. 
     
     
         15 . The amino resin treated backing material according to  claim 11 , having an elongation rate factor within a range of not less than 0.3 to not greater than 1.0. 
     
     
         16 . The amino resin treated backing material according to  claim 12 , wherein the amino resin treated backing material is free of bubbles. 
     
     
         17 . The amino resin treated backing material according to  claim 11 , having a body retention factor within a range of in a range of not less than about 0.4 to not greater than about 1.0. 
     
     
         18 . The amino resin treated backing material according to  claim 11 , wherein the amino resin treated backing material has an edge waviness of 3 mm or less. 
     
     
         19 . A coated abrasive article comprising:
 an amino resin treated backing material according to  claim 1 , and   an abrasive layer disposed on the amino resin treated backing material.   
     
     
         20 . A coated abrasive article comprising:
 an amino resin treated backing material impregnated with a cured modified melamine formaldehyde resin having the formula:   
       
         
           
           
               
               
           
         
         wherein R1, R2, R3 each represents an independent substituent selected from hydrogen and alkyl groups having one to four carbon atoms; and 
         an abrasive layer disposed on the amino resin treated backing material.