SINOCURE® PSS-DAA is a low-yellowing, long‑wavelength cationic photosensitizer specifically developed for UV-LED curing systems. It efficiently sensitizes cationic photoinitiators, enabling high curing speed while significantly reducing yellowing of the cured film. It is particularly suitable for transparent or light‑colored UV curable systems where optical performance and yellowing resistance are critical.
SINOCURE® PSS-DAA
(Low-Yellowing Long-Wavelength Cationic Photosensitizer)
Chemical Name: 9,10-Diacetoxyanthracene;Anthracene-9,10-diyl diacetate;10-(acetyloxy)-9-anthryl acetate
CAS No: 604-66-0
MF: C18H14O4
MW: 294.3
Molecular Structure:
SINOCURE® PSS-DAA is a low-yellowing, long‑wavelength cationic photosensitizer specifically developed for UV-LED curing systems. It efficiently sensitizes cationic photoinitiators, enabling high curing speed while significantly reducing yellowing of the cured film. It is particularly suitable for transparent or light‑colored UV curable systems where optical performance and yellowing resistance are critical.
Appearance | Off white to pale yellow powder |
Purity (HPLC) | ≥ 99.0% |
Moisture | ≤ 0.5% |
Long-wavelength absorption – Characteristic absorption peaks at 354 nm, 372 nm, and 392 nm, ideal for mainstream UV‑LED light sources.
Extremely low yellowing – Cured coatings exhibit a very low yellowing index and excellent long-term weather resistance, perfect for high‑transparency and light-colored formulations.
Good compatibility – Miscible with various epoxy resins, oxetane resins, and cationic photoinitiators; excellent solubility in common reactive diluents.
High thermal stability – Stable under processing temperatures; good storage stability.
No migration risk – Suitable for demanding applications such as food contact materials and electronic encapsulation.
UV-LED curable cationic coatings, inks, and adhesives
Transparent and light-colored UV systems requiring low yellowing
Electronics encapsulation, optical coatings, and food packaging coatings
0.3 – 2.0% based on total formulation weight. The optimal dosage should be determined by formulation, light source power, and film thickness.
1kg, 10kg,20kg Bag/Carton
Store in a cool, dry, well‑ventilated area away from light and heat. Recommended storage temperature: 15 – 25°C.
Keep container tightly sealed. The product is moisture‑sensitive; flush with inert gas after opening.
Avoid contact with strong acids, strong bases, and oxidizing agents.
Shelf life: 12 months in original unopened packaging under recommended storage conditions.
We offer a variety of options to help you find the right product for your application
Provide formulation optimization support for water-based/solvent-based systems
Full coverage of REACH, FDA, and GB standards
99.8% on-time delivery rate, 10,000-ton production capacity guarantee
