Properties of Photoinitiator 819 :
As a new type of photoinitiator, 819 is widely used in coatings, inks, adhesives and other industries for its excellent performance.
For pigmented coating systems, curing is more effective than other photoinitiators. The acylphosphine oxide photoinitiators hardly yellow under curing and long-term light radiation, so they can be used in applications where yellowing is critical, such as white, light inks and coatings.
Product Name: Phenylbis(2,4,6-trimethylbenzoyl)phosphine oxide
Molecular Weight :418.46
CAS NO.: 162881-26-7
Appearance: Yellowlish powder
Melting point: 131~135°C
Boiling Point: 90°C(760mmHg)
1, with absorption at 370nm, 405nm, 450nm.
2. The photolysis product is two trimethylbenzamide radicals and one phenylphosphonic acid free radical
3. The initiator has high efficiency and is more active than TPO.
4, for high opacity of white paint, paint and ink containing titanium white or other pigments, the addition of a small amount can make the coating has excellent curing effect and UV yellowing resistance, due to the excellent photoinitiator 819 The absorption properties can be used in thick film systems.
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Sample time: 1-3days, ,
Mass goods:usually 7-15 days
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Usually is Shanghai,Qingdao or Tianjin
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