Example 3

Another erasable red writing composition according to certain embodiments of the invention herein is shown in Table 3. The erasable writing composition is formed by combining stearic acid, stearyl alcohol, phenolic resin, a mineral filler, and leuco dyes.

TABLE 3
Red Erasable Writing Composition
Weight
ComponentGramsPercentage (wt %)
stearic acid7543.40278
stearyl alcohol7543.40278
phenolic resin (Durez 32420)105.787037
leuco dye (Pergascript Orange 1-G)2.11.215278
Leuco dye (Pergascript Red 1-6B)0.70.405093
Mineral filler (Ultrex 96105.787037
(BASF) calcined clay)
TOTAL172.8100

Free full text: Click here