| 摘要 |
<p>Case 3-10990/MA 1689 Canada Process for the preparation of a solvent-stable, red-shade copper phthalocyanine pigment composition A process for the preparation of a solvent-stable, red shade copper phthalocyanine pigment composition by reacting an organic compound of capable of forming the phthalocyanine ring system, benzophenone 3,3',4,4'-tetracarboxylic acid or a derivative thereof, a copper compound capable of providing the copper atom of the copper phthalocyanine molecule, a reaction catalyst, and a nitrogen source, optionally in the presence of at least one phthalocyanine compound substituted by 1 to 4 groups of a sulphonate or sulphonic acid and/or sulphonamide which may be N-substituted.</p> |
