Physical and Chemical Properties | Chemical nature blue powder, soluble in benzene and methanol. |
Use | Mainly used for the preparation of ballpoint pen blue ink. |
This product is mainly prepared by coprecipitation formed by phthalocyanine sulfonate, alkaline violet 5BN and brilliant blue BO, and is mainly divided into the following steps.
Sulfonation of copper phthalocyanine blue
Mutual precipitation
Operation procedure
Firstly, 40 parts of copper phthalocyanine were sulfonated with fuming sulfuric acid at 125~135 ℃, then neutralized with ammonia water to a pH value of 7~8, filtered and the filtrate was reserved.
Prepare 16 parts of alkaline brilliant blue solution and 20 parts of alkaline purple solution with pH value of 3~4 for standby.
Put 10 parts of sulfonated copper phthalocyanine sulfonated solution into the reaction pot, stir and heat to 70 ℃, first add the alkaline brilliant blue BO solution prepared above into the reaction pot within 25~30min to make mutual precipitation reaction, after adding, control the alkaline violet 5BN prepared above to be added into the reaction pot within 50min, then start mutual precipitation reaction, and keep the reaction temperature between 68~70 ℃, at the end of the reaction, the filter paper infiltration ring was light purple, then heated to 80 ℃, kept warm for 1h, let stand at 60 ℃ for 0.5h, filter, rinse with hot water, and dry at about 80 ℃.