POLYMER-BONDED QUATERRYLENE AND/OR TERRYLENE DYES AND COMPOSITIONS CONTAINING SAME

摘要

The invention provides a method of increasing the solubility and/or dispersibility of a quaterrylene and/or terrylene dye in a liquid medium such as, e.g., a liquid medium comprised in a printing ink composition. The method comprises covalently binding the quaterrylene and/or terrylene dye to a polymer which is soluble in the liquid medium. The invention also provides a printing ink composition which comprises a polar liquid medium that has at least one polymer-covalently bonded quaterrylene and/or terrylene dye of the present invention as set forth above (including the various aspects thereof) dissolved or dispersed therein. The invention also provides a marking or security feature which is made with the printing ink composition of the present invention as set forth above (including the various aspects thereof).