Transparent solid ink composition and method of preparing the same

摘要

Disclosed herein is a method of preparing a solid ink composition, comprising the steps of: reacting 15 ˆ¼ 25 parts by weight of base oil including coconut oil, palm oil and castor oil and 40 ˆ¼ 60 parts by weight of aliphatic organic acid of 10 to 20 carbon atoms with 7 ˆ¼ 15 parts by weight of a caustic soda solution (concentration: 40%) to saponify the base oil and to change the aliphatic organic acid into sodium salt thereof; mixing 3 ˆ¼ 10 by weight of glycerin, 10 ˆ¼ 20 by weight of ethanol, 0.1 ˆ¼ 1.0 by weight of a dye and 1 ˆ¼ 10 by weight of silica with the reaction product and then melting the mixture at 70 ˆ¼ 80°C; and cooling the molten mixture. The solid ink composition prepared by the method is very transparent, and has excellent miscibility and stability because it is easily mixed with a water-soluble dye or a water-soluble fluorescent dye.