How can i absolutely convert my raw copper phthalocyanine base into pigmentary beta modified crystal form effectively? If so, can i do it without converting the raw base into alpha crystal form first??
Suggestions Will Be Highly Appreciated!
Dear friend Daniyal Ahmed
I hope you’re doing well! I saw your interest in converting raw copper phthalocyanine directly into its pigmentary beta form, and I wanted to share a few thoughts that might help streamline your process while ensuring you get that vibrant, stable pigmentation you’re after.
One effective approach is direct solvent treatment. Using a solvent like chlorobenzene or nitrobenzene, you can dissolve the raw copper phthalocyanine, then heat the mixture to encourage the phase transition. Afterward, controlled precipitation—either by slow cooling or by adding a non-solvent—can help you isolate the pigment in the beta form. Paying close attention to crystallization conditions, such as temperature and solvent ratios, is key here; these factors significantly influence the final crystal structure. Consulting relevant literature for precise parameters can be very helpful.
To avoid inadvertently forming the alpha crystal, try to minimize high-shear forces and rapid precipitation, as these conditions tend to favor the alpha form. Also, if you have access to analytical tools like X-ray diffraction, they can confirm whether you’ve achieved the desired beta structure.
Please remember to work in a well-ventilated area or under a fume hood when handling these solvents. If you have any questions or want to discuss the process further, feel free to reach out—I’m happy to help!
Best regards,
K
Dear Friend,
Apologies for my late response as i was busy in the past few weeks.
Like i said, i want to effectively (100%) convert the raw form or as we call "blue base" of copper phthalocyanine exhibiting no tinctorial strength into pigmentary beta form crystals exhibiting excellent tintorial strength with greenish blue shade.
The problem that i am encountering currently is ineffectiveness of convertion. Either the conversion to some extent (10%-20%) or no conversion at all.
The first test after conversion which i carry is tinctorial strength and solvent stability through which i judge/observe my results.
Can you please suggest some research papers/literatures/patents that can help me in achieving my objective.
Kindly suggest more on the subject from yourside as well.
Best Regards With Thanks,
Daniyal
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