Aqueous based composition containing dibasic ester and thickening agent for removing coatings

Abstract

Composition for removing coatings from surfaces consisting essentially of at least one dibasic ester, water, and at least one thickening agent. The composition contains sufficient water and thickening agent to allow it to wet out and adhere to vertical surfaces for a sufficiently long period to insure that the dibasic ester component will have sufficient duration of contact with the coating to allow easy removal of same.

What is claimed is:  
     
       1. Composition consisting essentially of (1) from about 10 percent by weight to about 45 percent by weight of at least one dibasic ester, (2) from about 55 percent by weight to about 90 percent by weight water, (3) from 0 to 0.9 percent by weight of a surfactant, and (4) at least one thickening agent selected from the group consisting of water soluble and water swellable thickening agents, and mixtures thereof, in an amount sufficient to form a stable emulsion. 
     
     
       2. The composition of  claim 1  wherein said water comprises at least 60 percent by weight of said composition. 
     
     
       3. The composition of  claim 1  wherein said water comprises at least 70 percent by weight of said composition. 
     
     
       4. The composition of  claim 1  wherein said at least one thickening agent comprises from about 0.5 percent by weight to about 4 percent by weight of said composition. 
     
     
       5. The composition of  claim 1  wherein said at least one dibasic ester is an aliphatic dibasic ester having a molecular weight equal to or less than about 200. 
     
     
       6. The composition of  claim 5  wherein said at least one dibasic ester is a dibasic ester derived from an acid selected from the group consisting of adipic acid, glutaric acid, and succinic acid. 
     
     
       7. Coating removal composition consisting essentially of from about 10 percent by weight to about 45 percent by weight of at least one dibasic ester, from about 55 percent by weight to about 90 percent by weight water, from about 0.5 percent by weight to about 4 percent by weight at least one thickening agent, and from 0 to 0.9 percent by weight surfactant. 
     
     
       8. Coating removal composition consisting essentially of from about 10 percent by weight to about 40 percent by weight of at least one dibasic ester, from about 60 percent by weight to about 90 percent by weight water, from about 0.5 percent by weight to about 4 percent by weight at least one thickening agent, and from 0 to 0.9 percent by weight surfactant. 
     
     
       9. Coating removal composition consisting essentially of from bout 10 percent by weight to about 35 percent by weight of at least one dibasic ester, from about 60 percent by weight to about 90 percent by weight water, from about 0.5 percent by weight to about 4 percent by weight at least one thickening agent, and from 0 to 0.9 percent weight surfactant. 
     
     
       10. Method of removing an organic coating from a substrate comprising the steps of: 
       (a) providing a composition consisting essentially of (1) from about 10 percent by weight to about 45 percent by weight of at least one dibasic ester, (2) from about 55 percent by weight to about 90 percent by weight water, and (3) at least one thickening agent selected from the group consisting of water soluble and water swellable thickening agents, and mixtures thereof, in an amount sufficient to form a stable emulsion;  
       (b) applying said composition to a substrate bearing an organic coating;  
       (c) allowing said composition to remain on said substrate for a sufficient period of time to loosen said coating; and  
       (d) removing said coating from said substrate.  
     
     
       11. The method of  claim 10  wherein said substrate is made of wood. 
     
     
       12. The  A method of  claim 10  wherein said organic coating comprises  removing a coating of paint from a substrate comprising the steps of: 
       (a)  providing a composition consisting essentially of  (   1   )  from about  10  percent by weight to about  45  percent by weight of at least one dibasic ester,  (   2   )  from about  55  percent by weight to about  90  percent by weight water, and  (   3   )  at least one thickening agent selected from the group consisting of water soluble and water swellable thickening agents, and mixtures thereof, in an amount sufficient to form a stable emulsion;   
       (b)  applying said composition to a substrate bearing a coating of paint;   
       (c)  allowing said composition to remain on said substrate for a sufficient period of time to loosen said coating of paint; and   
       (d)  removing said coating of paint from said substrate.    
     
     
       13. The  A method of  claim 10  wherein said  removing an organic coating is  selected from the group consisting of varnish, nitrocellulose lacquer, and enamel from a substrate comprising the steps of: 
       ( a )  providing a composition consisting essentially of  (   1   )  from about  10  percent by weight to about  45  percent by weight of at least one dibasic ester,  (   2   )  from about  55  percent by weight to about  90  percent by weight water, and  (   3   )  at least one thickening agent selected from the group consisting of water soluble and water swellable thickening agents, and mixtures thereof, in an amount sufficient to form a stable emulsion;    
       (b)  applying said composition to a substrate bearing an organic coating selected from the group consisting of varnish, nitrocellulose lacquer, and enamel;    
       (c)  allowing said composition to remain on said substrate for a sufficient period of time to loosen said coating; and    
       (d)  removing said organic coating from said substrate.   
     
     
       14. The method of  claim 13  wherein said varnish is polyurethane varnish. 
     
     
       15. A thixotropic emulsion composition consisting essentially of: 
       (1) at least one dibasic ester in an amount sufficient to render organic polymeric coatings removable from surfaces;  
       (2) water in an amount exceeding 55 percent by weight of the composition; and  
       (3) at least one thickening agent selected from the group consisting of water soluble and water swellable thickening agents in an amount sufficient to form a stable thixotropic emulsion having the ability to cling to vertical surfaces.  
     
     
       16. A thixotropic emulsion composition of  claim 15  wherein said at least one dibasic ester has a molecular weight of up to about 200. 
     
     
       17. A thixotropic emulsion composition of  claim 15  wherein said at least one dibasic ester is selected from the group consisting of dibasic esters of adipic acid, glutaric acid, and succinic acid.