Chemical process
Storyboard Text
- Slide: 1
- 2. Yeah, I read that disperse dyes have the smallest molecules among all the common dye classes.
- 1. Hey, have you guys ever looked into the chemistry of disperse dyes?
- 3. Really? Why’s that important?
- 4. It helps them penetrate synthetic fibers more easily. Also, one key thing is that disperse dyes don’t have polar groups, which is why they’re insoluble in water.
- Slide: 2
- 5. Right, that makes sense. No polar groups, so they need a dispersing agent to work in water. But do you know what types of chemical structures they mostly have?
- 7. That’s true, and then you’ve got anthraquinone-based dyes, which make up about 15%.
- 6. Actually, I do! Monoazo compounds make up around 80% of disperse dyes. It’s the dominant structure in this class.
- Slide: 3
- 9. Exactly. But it’s the monoazo types that are the majority, which is why most disperse dyes are derived from them.
- 8. And the remaining 5%? Those are other structures, right?
- 10. I guess that explains why disperse dyes are so effective on synthetic fabrics like polyester—they’re small, non-polar, and perfectly suited for the job.
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