Wax compositions and the effect of metals on burn rates

Abstract

A wax composition is disclosed, comprising a hydrogenated natural oil with (i) at least about 50 wt % of a triacylglycerol component having a fatty acid composition from about 14 to about 25 wt % C16:0 fatty acid, about 45 to about 60 wt % C18:1 fatty acid and about 20 to about 30 wt % C18:0 fatty acid, (ii) a nickel content of less than 1 ppm, and (iii) a melt point of about 49° C. to about 57° C. The hydrogenated natural oil is filtered and/or bleached to obtain a nickel content of less than 0.5 ppm. A candle is also disclosed, comprising a wick and the above described wax.

What is claimed is: 
     
         1 . A wax composition comprising a hydrogenated natural oil comprising (i) at least about 50 wt % of a triacylglycerol component having a fatty acid composition from about 14 to about 25 wt % C16:0 fatty acid, about 45 to about 60 wt % C18:1 fatty acid and about 20 to about 30 wt % C18:0 fatty acid, (ii) a nickel content of less than 1 ppm, and (iii) a melt point of about 49° C. to about 57° C. 
     
     
         2 . The wax composition of  claim 1  wherein the triacylglycerol component has an Iodine Value of about 45 to about 60. 
     
     
         3 . The wax composition of  claim 1 , wherein the hydrogenated natural oil is selected from the group consisting of hydrogenated canola oil, hydrogenated rapeseed oil, hydrogenated coconut oil, hydrogenated corn oil, hydrogenated cottonseed oil, hydrogenated olive oil, hydrogenated palm oil, hydrogenated peanut oil, hydrogenated safflower oil, hydrogenated sesame oil, hydrogenated soybean oil, hydrogenated sunflower oil, hydrogenated linseed oil, hydrogenated palm kernel oil, hydrogenated tung oil, hydrogenated jatropha oil, hydrogenated mustard oil, hydrogenated camelina oil, hydrogenated pennycress oil, hydrogenated castor oil, or mixtures thereof. 
     
     
         4 . The wax composition of  claim 1 , wherein the hydrogenated natural oil comprises at least about 75 wt % of the triacylglycerol component. 
     
     
         5 . The wax composition of  claim 1 , wherein the hydrogenated natural oil comprises at least about 90 wt % of the triacylglycerol component. 
     
     
         6 . The wax composition of  claim 1 , wherein the hydrogenated natural oil comprises hydrogenated soybean oil. 
     
     
         7 . The wax composition of  claim 1 , wherein the hydrogenated natural oil comprises hydrogenated palm oil. 
     
     
         8 . The wax composition of  claim 1 , wherein the hydrogenated natural oil comprises a blend of hydrogenated soybean oil and hydrogenated palm oil in a weight ratio of about 70:30 to 90:10. 
     
     
         9 . The wax composition of  claim 1 , wherein the hydrogenated natural oil comprises a blend of hydrogenated soybean oil and hydrogenated palm oil in a weight ratio of about 75:25 to 85:15. 
     
     
         10 . The wax composition of  claim 1 , wherein the hydrogenated natural oil is filtered and/or bleached to obtain a nickel content of less than 0.5 ppm. 
     
     
         11 . The wax composition of  claim 1 , which may further comprises at least one additive selected from the group consisting of wax-fusion enhancing additives, coloring agents, scenting agents, migration inhibitors, free fatty acids, surfactants, co-surfactants, emulsifiers, optimal wax ingredients, and combinations thereof. 
     
     
         12 . A candle comprising a wick and a wax, wherein the wax comprises a hydrogenated natural oil comprising (i) at least about 50 wt % of a triacylglycerol component having a fatty acid composition from about 14 to about 25 wt % C16:0 fatty acid, about 45 to about 60 wt % C18:1 fatty acid and about 20 to about 30 wt % C18:0 fatty acid , (ii) a nickel content of less than 1 ppm, and (iii) a melt point of about 49° C. to about 57° C. 
     
     
         13 . The candle of  claim 12 , wherein the triacylglycerol component has an Iodine Value of about 45 to about 60. 
     
     
         14 . The candle of  claim 12 , wherein the hydrogenated natural oil is selected from the group consisting of hydrogenated canola oil, hydrogenated rapeseed oil, hydrogenated coconut oil, hydrogenated corn oil, hydrogenated cottonseed oil, hydrogenated olive oil, hydrogenated palm oil, hydrogenated peanut oil, hydrogenated safflower oil, hydrogenated sesame oil, hydrogenated soybean oil, hydrogenated sunflower oil, hydrogenated linseed oil, hydrogenated palm kernel oil, hydrogenated tung oil, hydrogenated jatropha oil, hydrogenated mustard oil, hydrogenated camelina oil, hydrogenated pennycress oil, hydrogenated castor oil, or mixtures thereof. 
     
     
         15 . The candle of  claim 12 , wherein the hydrogenated natural oil comprises at least about 75 wt % of the triacylglycerol component. 
     
     
         16 . The candle of  claim 12 , wherein the hydrogenated natural oil comprises at least about 90 wt % of the triacylglycerol component. 
     
     
         17 . The candle of  claim 12 , wherein the hydrogenated natural oil comprises hydrogenated soybean oil. 
     
     
         18 . The candle of  claim 12 , wherein the hydrogenated natural oil comprises hydrogenated palm oil. 
     
     
         19 . The candle of  claim 12 , wherein the hydrogenated natural oil comprises a blend of hydrogenated soybean oil and hydrogenated palm oil in a weight ratio of about 70:30 to 90:10. 
     
     
         20 . The candle of  claim 12 , wherein the hydrogenated natural oil comprises a blend of hydrogenated soybean oil and hydrogenated palm oil in a weight ratio of about 75:25 to 85:15. 
     
     
         21 . The candle of  claim 12 , wherein the hydrogenated natural oil is filtered and/or bleached to obtain the nickel content of less than 0.5 ppm