EZHOU ANJEKA TECHNOLOGY CO.,Ltd Anjeka@anjeka.net 86-0711-5117111
| EZHOU ANJEKA TECHNOLOGY CO.,Ltd professional additive supplier |
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| Test record sheet | |||||||
| Test Name | Comparative Evaluation of Dispersants 6880 & 6881 against Reference 24000 in Polyurethane Systems for Inks | Temperature/humidity | |||||
| Customer | Conducted By | Mr.Chen | Test Date | Sep.20 2025 | |||
| Objective | |||||||
| Formulation | |||||||
| Evonik Printex® 35 | Pigment Red 48:2 | Remark | |||||
| PU resin | 30 | 30 | Lab Sample 3015H |
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| Solvent | 60.6 | 60.6 | ethyl acetate | ||||
| Dispersant | 0.4 | 0.4 | 6881 6880 24000 | ||||
| Pigment | 9 | 9 | |||||
| TOtal | 100 | 100 | |||||
| Method | |||||||
| 1.Sample 24000 is first dissolved in ethyl acetate at a 1:1 ratio (by weight). When used in formulations, the dosage of this pre-solution should be doubled to achieve the target active content. 2. Grind the color paste with 1.2 times its mass of glass beads for 4 hours. 3. Compare viscosity, color development, and stability. |
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| Result | |||||||
| Color Paste Comparison | |||||||
| Black | Red | ||||||
| Initial | 6880 | 6881 | Sample 24000 | 6880 | 6881 | Sample24000 | |
| Fineness（μm） | ≤10 | ≤10 | ≤10 | ≤10 | ≤10 | ≤10 | |
| Viscosity mpa.s | 8000 | 7800 | 7900 | 8200 | 8100 | 8300 | |
| Visual Color Development Assessment | Dispersant 6881 yields the visually darkest paste. | Dispersant 6881 yields the visually darkest paste. | |||||
| Black | Red | ||||||
| at 60℃ for 7 days | 6880 | 6881 |
Sample 24000 |
6880 | 6881 | Sample 24000 | |
| Fineness（μm） | ≤10 | ≤10 | ≤10 | ≤10 | ≤10 | ≤10 | |
| Viscosity mpa.s | 15600 | 13000 | 16500 | 18200 | 15320 | 15320 | |
| Visual Color Development Assessment | Dispersant 6881 yields the visually darkest paste. | Dispersant 6881 yields the visually darkest paste. | |||||
| Conclusion | |||||||
| Dispersant 6881 delivers the best overall performance in this system for both black and red pigments. | |||||||
