| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for producing a copper-phthalocyanine composition from which a printing ink of a copper-phthalocyanine pigment is obtained, being capable of reducing a lot of time and effort for the step of converting crude copper phthalocyanine into a pigment and a step of producing a printing ink of the pigment and having a high quality and superior dispersibility and a method for producing a printing ink. <P>SOLUTION: In the method for producing a copper-phthalocyanine pigment composition, including dry-grinding crude copper phthalocyanine together with a resin for a printing ink, as the resin for a printing ink, a resin for a printing ink, being ground previously is used. The method for producing a printing ink includes mixing and dispersing a copper-phthalocyanine pigment composition obtained by the production method, varnish for a printing ink, and a solvent. <P>COPYRIGHT: (C)2012,JPO&INPIT</p> |
