Spectra Group Limited H-Nu 470
- CAS Number
- 161728-47-8
- Chemical Name
- 6-(n-butoxy)-24-diiodo-3-flurone
Spectra Group Limited H-Nu 470 initiates both free-radical and cationic photopolymerization, using a different set of co-initiators depending on the polymerization process • Type II photoinitiator: H-Nu 470 acts as a light harvester, followed by energy or electron transfer to a co-initiator molecule; produced reactive species activate photopolymerization • Commercial photoinitiator (TSCA status: LVE), non-toxic (LD50>5000 mg/kg).
Properties
- Physical Form
- Powder
- Solid
Identification
- CASE Ingredients Features
- Fast CureFaster Cure TimeNon-Yellowing GradeYellowing ResistanceYellowing Stability
- CASE Ingredients Functions
- Photoinitiator
Product families
- Catalysts & Initiators
Other characteristics
- End Uses
Radiation Curable Adhesive, Radiation Curable Coating, Radiation Curable Ink
- Functions
- Photoinitiator
- Name
- 5,7-diiodo-3-butoxy-6-fluorone
- Markets
- Adhesives & Sealants
- Paints & Coatings
- Advantages
High absorptivity, low concentrations are needed (0.01-0.15% by weight); Capable of significant depth of cure > 1 inch; Time and energy savings when one-pass thick cure can replace thin multilayered coatings; Initiator bleaching (bright red to pale orange/no color) upon light interaction can act as cure indicator
- Appearance
- Orange Powder
- Cure
- Radiation Cure
- Applications
Adhesives & Sealants — Other Adhesives & Sealants Applications; Paints & Coatings — Other Paints & Coatings Applications
- Coating Type
- Radiation Curable Coating
- Technology
- CASE Ingredients
- Labeling Claims
- Non-Toxic
- Ink and Toner Type
- Radiation Curable Ink
- Chemical Inventories
- TSCA (USA)
- Adhesive & Sealant Type
- Radiation Curable Adhesive
- Examples of Uses
Coating process; Moore, M., Lungu, V., Marino, T., Radtech Report 11, 2, (March/April) 1997; SU-8 photoresist; Y. Lin, P.R. Hermann, and K.Darmawikarta, Appl. Phys. Lett. 86, 7, 071117 (2005); J.H. Moon, S.-M. Yang, D.J. Pine, and W.-S. Chang, Appl. Phys. Lett. 85, 18, 4184 (2004); D. Rodriguez Ponce, K Lozano, et al. J. Polym. Sci.: Part B: Polym. Phys. 48, 1, 47 (2010); 3D printing; D. Ahn, L.M. Stevens, K. Zhou, and Z. A. Page, ACS Cent. Sci. 6, 9, 1555-1563 (2020)
Technical data
Table 1 of 1
3 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Absorbance | max. 470 | nm | UV Visible spectroscopy |
| Melting Point | min. 270 | °C | Melting point Analysis |
| Molar Extinction Coefficient (470) | 30200 | nm | UV Visible spectroscopy |
