摘要 |
<p>A non-calcined lead of a colored pencil obtainable by following process: a binder or its solution are added to a mixture comprising a colorant, a body filler, and a solvent as required, and the resultant mixed compound is kneaded, after that, the said solvent is removed, and the resultant mixture is mixed together with O/W emulsion comprising an oily substance being a liquid at ordinary temperature, one or more surfactant(s) having a H.L.B value of not less than 7 nor more than 18 and water, the mixed ingredients are formed, and the water contained in the said O/W emulsion and the said solvent if any remains is removed. A synthetic mica is contained as a lubricant, and the said body filler is at least one compound selected from the group consisting of wollastonite, attapulgite, haloysite kaolin and sepiolite. The above-mentioned non-calcined lead of a colored pencil is excellent in mechanical strength and does not deteriorate the writing characteristic and coloring power nor does swell even at high humidity. In addition,it can reduce cost and is excellent in forming performance.It also shows erasability with a rubber eraser,while maintaining the excellent coloring power,mechanical strength and forming performance.</p> |