Coloring paraffin wax process
Coloring paraffin wax process
manufacture of colored paraffin wax which is used for candles and waxed paper and the like, the coloring processes in present use have been unsatisfactory in that they are relatively and the colors so produced the fade. At present, it is the practice to melt the paraffin, wax, and intermix therewith the specially prepared dyes, which have been so treated as to be soluble in the melted paraffin. I further have discovered that soap may be formed by the reaction of a base as an ethanolamine of the class of alkylamines and a fatty acid as commercial stearic acid which combine in molecular proportions and in which the said commercial dyes are readily soluble and the resulting solution being soluble in the melted paraffin wax. a better color is thus produced in the melted paraffin. In carrying out my process there is no preferred order in which the various compounds are to be combined. For convenience I prefer to mix the dye in suitable proportions to produce the required shade of color with the triethanolamine, which is then dissolved in the stearic acid, the proportion of stearic acid being slightly in excess of the ethanolamine. Since the triethanolamine combines with the fatty acid in molecular proportions, the c, act quantities of the acid and the base are unimportant, except that a slight excess of the acid tends to produce a better color, as before mentioned.,. Beyond this, any excess of either may be disregarded, as the will have no effect on the result, so long as t e dye is properly dissolved. Of course, in the interest of economy, a substantial excess of either would not be used. I have found that other fatty acids may be used with satisfactory results, the limiting a selected dye in an ethanolamine to impart to the latter the desired shade of color and dissolving the mixture of dye and ethanolamine in the melted paraffin wax, whereby the stearic acid in the latter forms with the ethanolamine a soap soluble in the melted paraffin wax. The process of coloring paraffin wax which consists in dissolving a selected dye in ani ethanolamine to impart to the latter the desired shade of color, and dissolving the ethanolamine in melted paraffin wax in the presence of a fatty acid having the property of forming a soap with the ethanolamine soluble in the melted paraffin. The process of coloring paraffin wax which consists in melting the wax, dissolving a selected dye in an ethanolamine to impart to the latter the desired shade of color, dissolving the ethanolamine in an excess of fatty acid to form a soap soluble in melted paraffin wax and dissolving the soap in the melted paraffin wax. The coloring paraffin wax process which consists in melting the wax, dissolving a selected aniline dye in an ethanolamine to impart to the latter the desired shade of color, dissolving the ethanolamine in a slight excess soluble in melted of fatty acid to form a soap soluble in melted paraffin wax, and dissolving the soap in the melted paraffin wax.
