Description
Synacure 819(920)
Chemical Name:Phenyl bis(2,4,6-trimethylbenzoyl)-phosphine oxide
Synonym: 819;Omnirad 808;Omnirad 819;Synacure 819;Photoinitiator BAPO;Speedcure BPO;CGI 819;Chivacure 789;GENOCURE BAPO;Photoinitiator 920;Synacure 920
Cas No.: 162881-26-7
Standard：
| Items | Specifications |
| Appearance | Pale yellow powder |
| Assay (HPLC) | ≥99.0％ |
| Melting point | 129~133°C |
| Volatiles | ≤0.2% |
| Acid value(Mg KOH/g) | ≤0.2 |
| Ash | ≤0.1% |
Function & Applications:
Synacure 819 can be used in printing inks and prepreg systems for wood, metal, plastic, paper and optical fiber surfaces. In white coatings, colored coatings and inks containing titanium dioxide or other high hiding pigments, adding a small amount of Synacure 819 can make the coating have excellent curing effect and UV yellowing resistance. Due to its excellent absorption properties, Synacure 819 can be used in thick film systems.
Synacure 819 can be used in combination with other photoinitiators, such as Synacure 184 or Synacure 651. The combination of Synacure 819 and Synacure 651 is particularly suitable for curing polyester/styrene resin systems, such as glass fiber reinforced materials.
Due to its absorption in the long wavelength band, Synacure 819 can be used in combination with UV absorbers (such as Sinosorb 400) and can therefore be used in UV-curable coatings that require weather resistance.
Reference dosage:
| ▶Clear acrylic and unsaturated polyester/styrene coatings |
| 0.1- 0.2% 819 + 1-2% 184 |
| ▶White acrylic and unsaturated polyester/styrene coatings |
| 0.5-1% 819 + 1-2% 184 |
| ▶Colored acrylic formulations |
| 0.5-1% 819 + 1-2% 184 |
| ▶White screen printing inks |
| 0.5-1.5% 819 + 1-2% 184 |
| ▶Fiberglass reinforced unsaturated polyester/styrene prepregs |
| 0.1- 0.2% 819 |
Packaging and Shipping:
Packing:20kg/carton box.
Delivery:with in 5-7 working days.
Storage:
Stored in a cool dry place out of direct sunlight.
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