Light-sensitive dye - Ranbar Blue DP5060 Spirooxazine dye
Ranbar Blue DP5060 colorless to blue Light-sensitive dye is a powdery organic compound dye. The dye is soluble in solvents such as toluene and methylene chloride. The color of its toluene solution will turn blue when it is irradiated by ultraviolet light. After removing the ultraviolet light, it will return to a colorless state. This change is repeatedly reversible.
It should be noted that Light-sensitive dye itself will not change color when it is exposed to light, and it needs to be dissolved in other suitable carriers to achieve the photochromic effect. It can be completely dissolved in the carrier and presents a highly transparent state, which can realize the effect of complete transparency of the product system.
Specifications:
Temperature resistance: 220℃
Melting point: 260°C ~ 262°C
DSC Differential Scanning Calorimetry: 270°C
UV absorbance (λmax): 390nm
Chemical Structure: Spirooxazines
Appearance: DP5060 is a light green powder under normal conditions, soluble in toluene, and turns into a blue solution under ultraviolet light.
Solubility:
Dissolved: toluene, dichloromethane
Slightly soluble: acetone, butanone, ethyl acetate
Insolubles: alcohol, IPA isopropanol, DMF dimethylformamide
The principle of color change of spirooxazine dyes:
The spiro form of oxazine is a colorless dye. The conjugated system of oxazine and another aromatic part in the molecule are separated by a sp³ hybridized “spiro” carbon atom. After ultraviolet irradiation, the bond between the spirocarbon and oxazine is broken, the ring is opened, and the spirocarbon achieves sp² hybridization and becomes a plane. Then the aromatic group rotates, and its π orbital aligns with the rest of the molecule. Finally, a conjugated system is formed, which has the ability to absorb photons of visible light, thus presenting rich and colorful colors. When the UV source is removed, the molecule gradually relaxes to the ground state, the carbon-oxygen bond is reformed, the spirocarbon becomes sp³ hybridized again, and the molecule returns to a colorless state.
The spiro form of oxazine is a colorless dye. The conjugated system of oxazine and another aromatic part in the molecule are separated by a sp³ hybridized “spiro” carbon atom. After ultraviolet irradiation, the bond between the spirocarbon and oxazine is broken, the ring is opened, and the spirocarbon achieves sp² hybridization and becomes a plane. Then the aromatic group rotates, and its π orbital aligns with the rest of the molecule. Finally, a conjugated system is formed, which has the ability to absorb photons of visible light, thus presenting rich and colorful colors. When the UV source is removed, the molecule gradually relaxes to the ground state, the carbon-oxygen bond is reformed, the spirocarbon becomes sp³ hybridized again, and the molecule returns to a colorless state.
Ink Coating Application:
●Soluble in organic solvents, it may show different colors in different polar solvents.
●Light-sensitive dye is suitable for oil-water resin system.
●The suitable pH value of the selected substrate is 7-9.
●The recommended dosage in ink coating is 0.02%~0.1%(w/w).
●Suitable for screen, gravure, and flexographic printing inks.
●It is recommended that the printing background be white or light-colored series.
●It can be mixed and used with other organic pigments or dyes.
●When used on different substrates, the appropriate resin or substrate should be selected.
Injection molding and extrusion applications:
●Suitable for PP, PE, PVC, PU, PS, ABS, TPR, EVA, Nylon, PMMA and other resins.
●The recommended dosage in plastics is 0.01% ~ 0.1% w/w.
●Photosensitive dyes can be used together with other pigments or organic dyes.
●Avoid using Light-sensitive dye above 250℃.
●Adding appropriate light stabilizers and antioxidants can improve the heat resistance and UV resistance of Light-sensitive dye.
| model | Color - colorless to colored | hue | solvent | Temperature ℃ | features | Application field |
| DP1220 | Fuchsia |
Blue Red
|
Toluene, EA, AC, MeOH, THF | 220 | High transparency | Coatings, plastics, ink |
| DP1380 | Fuchsia | Yellow Red | Toluene, EA, AC, MeOH, THF | 220 | High transparency | Coatings, plastics, ink |
| DP1610 | Bright Red | Yellow Red | Toluene, EA, AC, MeOH, THF | 220 | High transparency | Coatings, plastics, ink |
| DP2070 | Orange | Red Orange | Toluene, EA, AC, MeOH, THF | 220 | High transparency | Coatings, plastics, ink |
| DP2050 | Orange | Yellow Orange | Toluene, EA, AC, MeOH, THF | 220 | High transparency | Coatings, plastics, ink |
| DP3080 | Yellow | Red Yellow | Toluene, EA, AC, MeOH, THF | 220 | High transparency | Coatings, plastics, ink |
| DP4010 | Green | Green | Toluene, EA, AC, MeOH, THF | 220 | High transparency | Coatings, plastics, ink |
| DP4013 | Green | Dark Green | Toluene, EA, AC, MeOH, THF | 220 | High transparency | Coatings, plastics, ink |
| DP5060 | Blue | Royal Blue | Toluene, EA, AC, MeOH, THF | 220 | High transparency | Coatings, plastics, ink |
| DP6008 | Purple | Red Purple | Toluene, EA, AC, MeOH, THF | 220 | High transparency | Coatings, plastics, ink |
| DP6010 | Violet | Violet | Toluene, EA, AC, MeOH, THF | 220 | High transparency | Coatings, plastics, ink |
| DP6014 | Violet | Dark Violet | Toluene, EA, AC, MeOH, THF | 220 | High transparency | Coatings, plastics, ink |
| DP7030 | Brown | Red Brown | Toluene, EA, AC, MeOH, THF | 220 | High transparency | Coatings, plastics, ink |
| DP0080 | Grey | Red light Black | Toluene, EA, AC, MeOH, THF | 220 | High transparency | Coatings, plastics, ink |
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