Patent ID: 6841590
Filing Date: 2005-01-11
Classification: C09D

Abstract:
1. A solvent-free, flexographic printing ink which is solid at room temperature, the ink consisting essentially of: (A) a pigment; (B) a thermoplastic binder selected from the group consisting of an ethylene copolymer, a hydrocarbon resin, and a combination thereof; (C) a wax selected from the group consisting of a highly branched hydrocarbon wax, a polyethylene homopolymer wax, an oxidized polyethylene wax, an animal wax, a vegetable wax and combinations thereof; (D) a solid linear alcohol at room temperature; and, (E) a dispersing agent; and, optionally, (F) a solid plasticizer; wherein, the ink has a melting point of about 75° C. or greater, and when heated to a temperature between about 90° C. and about 135° C., forms a molten ink which has a viscosity between about 100 cps and about 1200 cps.