Sun Chemical Corporation

Clive Edward Lawrence

Nandakumar Menon

Stewart Kessel

A value document, such as a banknote, is printed using a printing ink or varnish comprising an aqueous dispersion of a preferably aliphatic polycarbonate polyurethane and/or a polyether or polyester polycarbonate polyurethane copolymer having a particle size range from 10 to 400 nm and an acid value no greater than 10 mg KOH/g.

Printing ink for value or security documents

An energy-core ink or varnish composition is provided for use in an in-mold decoration (IMD) process, comprising an energy-curable resin, additional reactive monomers and/or oligomers and, optionally and in an amount not exceeding 10% by weight, a solvent, wherein the resin comprises a urethane acrylate oligomer having an aromatic or aliphatic polycarbonate backbone. For inks, the composition additionally includes a pigment or dye. For photocure compositions, a photoinitiator is also included. Also provided is an in-mold decoration (IMD) process employing the ink or varnish composition.

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London, United Kingdom

Clive Edward Lawrence