Platewash Composition

Abstract

This invention relates to a composition comprising a hydrocarbon solvent in combination with diisopropylbenzene or 2-ethylhexyl acetate, and optionally, a co-solvent selected from tetrahydrofurfuryl alcohol, 2-ethoxyethanol, terpineol, dipropylene glycol methyl ether, 2-butoxyethanol, 2-(2-butyoxyethoxy) ethanol, a naphthenic hydrocarbon, a paraffinic hydrocarbon, an olefinic hydrocarbon, an isoparaffinic hydrocarbon, a terepene, benzyl alcohol, cyclohexanol, methyl cyclohexanol, hexyl alcohol, and heptyl alcohol, and methods directed to the preparation and use of this composition. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.

What is claimed is: 
     
         1 . A composition comprising:
 (a) a hydrocarbon solvent consisting essentially of paraffinic components and having an average boiling point of from about 190° C. to about 230° C., and wherein the hydrocarbon solvent is present in an amount of from about 15 wt % to about 55 wt %, based on the total weight of the composition;   (b) diisopropylbenzene in an amount of from about 20 wt % to about 80 wt %, based on the total weight of the composition; and   (c) a co-solvent selected from tetrahydrofurfuryl alcohol, 2-ethoxyethanol, terpineol, dipropylene glycol methyl ether, 2-butoxyethanol, 2-(2-butyoxyethoxy) ethanol, a naphthenic hydrocarbon, a paraffinic hydrocarbon, an olefinic hydrocarbon, an isoparaffinic hydrocarbon, a terepene, benzyl alcohol, cyclohexanol, methyl cyclohexanol, hexyl alcohol, and heptyl alcohol, wherein the co-solvent is present in an amount of less than about 35 wt %, based on the total weight of the composition.   
     
     
         2 . The composition of  claim 1 , wherein the composition consists essentially of the hydrocarbon solvent, diisopropylbenzene, and the co-solvent. 
     
     
         3 . The composition of  claim 1 , wherein the hydrocarbon solvent comprises C8-C26 branched and linear alkanes. 
     
     
         4 . The composition of  claim 1 , wherein the hydrocarbon solvent is present in an amount of from about 45 wt % to about 50 wt %, based on the total weight of the composition. 
     
     
         5 . The composition of  claim 1 , wherein the hydrocarbon solvent is produced by gas to liquid (GTL) technology. 
     
     
         6 . The composition of  claim 1 , wherein diisopropylbenzene is present in an amount of about 28 wt %, based on the total weight of the composition. 
     
     
         7 . The composition of  claim 1 , wherein the co-solvent is selected from cyclohexanol and benzyl alcohol. 
     
     
         8 . The composition of  claim 1 , wherein the co-solvent comprises an alcohol. 
     
     
         9 . The composition of  claim 8 , wherein the alcohol is benzyl alcohol. 
     
     
         10 . The composition of  claim 8 , wherein the composition consists essentially of the alcohol, diisopropylbenzene, and the hydrocarbon solvent. 
     
     
         11 . A composition comprising:
 (a) a hydrocarbon solvent produced by GTL technology, wherein the hydrocarbon solvent consists essentially of paraffinic components and has an average boiling point of from about 190° C. to about 230° C., and wherein the hydrocarbon solvent is present in an amount of from about 15 wt % to about 55 wt %, based on the total weight of the composition;   (b) diisopropylbenzene in an amount of from about 20 wt % to about 80 wt %, based on the total weight of the composition; and   (c) benzyl alcohol present in an amount of less than about 35 wt %, based on the total weight of the composition.   
     
     
         12 . The composition of  claim 11 , wherein the composition consists essentially of the hydrocarbon solvent, 2-ethylhexyl acetate, and benzyl alcohol. 
     
     
         13 . The composition of  claim 11 , wherein diisopropylbenzene is present in an amount of about 28 wt %, based on the total weight of the composition. 
     
     
         14 . The composition of  claim 11 , wherein the hydrocarbon solvent comprises C8-C26 branched and linear alkanes. 
     
     
         15 . The composition of  claim 11 , wherein the hydrocarbon solvent is present in an amount of from about 20 wt % to about 30 wt %, based on the total weight of the composition. 
     
     
         16 . A composition comprising:
 (a) a hydrocarbon solvent produced by GTL technology, wherein the hydrocarbon solvent consists essentially of paraffinic components and has an average boiling point of from about 190° C. to about 230° C., and wherein the hydrocarbon solvent is present in an amount of from about 20 wt % to about 30 wt %, based on the total weight of the composition;   (b) diisopropylbenzene in an amount of from about 20 wt % to about 30 wt %, based on the total weight of the composition; and   (c) benzyl alcohol present in an amount of less than about 35 wt %, based on the total weight of the composition.   
     
     
         17 . The composition of  claim 16 , wherein the composition consists essentially of the hydrocarbon solvent, diisopropylbenzene, and benzyl alcohol. 
     
     
         18 . The composition of  claim 16 , wherein the hydrocarbon solvent comprises C8-C26 branched and linear alkanes. 
     
     
         19 . The composition of  claim 16 , wherein diisopropylbenzene is present in an amount of about 28 wt %, based on the total weight of the composition. 
     
     
         20 . The composition of  claim 16 , wherein the composition has a 50% volume temperature, and wherein the hydrocarbon solvent has a 50% volume temperature within less than ±2% of the 50% volume temperature of the composition.