| 摘要 |
Provided are methods for preparing a phthalocyanme pigment in high yield that eliminate the need to add a heavy metal catalyst. The resulting pigmentary phthalocyanme products thus contain no or only trace amounts of heavy metal impurities. The provided methods produce phthalocyanme pigments that can be used in any application that utilizes phthalocyanme pigments, such as in dispersions, printing inks, paints, plastics and coatings. |
