Pigment Violet 37
Pigment Violet 37 has a slightly better overall performance than Pigment Violet 23 and is particularly resistant to migration.
When PV37 is used for polyolefin coloring, and the heat resistance of 1/3 Sd can reach 290 °C, but when dosage decreased, its heat resistance drops sharply.
The light fastness of Pigment Violet 37 can reach 8 grades in PE, and reduction can reach 7~8 grades. It is suitable for general purpose polyolefin plastics, general engineering plastics.
Pigment Violet 37 is suitable for pre-spinning of polypropylene, polyester and nylon 6 fibers spinning, the concentration should not be too low, otherwise, there will be a color change.
Chemistry
| Chemical parameter | |
| The index number | PV-37 |
| CAS number | 17741-63-8 |
| CI structure number | 51345 |
| EC registration number | 241-734-3 |
| Chemical category | Dioxazine |
| Hue | Blu-ray purple |
| Molecular mass | 726.90 |
| Molecular formula | C40H34N6O8 |