The Benefits of RadAdd

The Benefits of CureAll® 900
in Replicating Bis Acyl Phosphine Oxide
(BAPO) Performance

Bis Acyl Phosphine Oxide technology has been used for years by chemists developing ultraviolet cure formulations. Ciba’s® Irgacure® 819, for example, has been one of the more popular photoinitiators based upon this chemistry. BAPO technology is most frequently used when end-users desire effective cure in highly pigmented coatings or improved through cure in thick film applications. There are distinct disadvantages to relying solely on BAPO technology to achieve these means, however, including higher raw material costs and difficulty in obtaining supply. Fortunately, there is a viable alternative to BAPO chemistry – CureAll® 900.

As a performance substitute to BAPO,
CureAll 900 photoinitiator blend offers many of the advantages associated with traditional photoinitiators activated by light in the near visible region of 400 nm and longer. CureAll 900 also offers additional features and benefits to the discerning formulator as well, including those listed in the chart to the right. CureAll 900 proves cost effective and is readily available for sample and purchase.

CureAll® 900 Features

More Complete Cure Profile
Ready-to-Use Liquid for
Ease of Incorporation
Lower Cost
Less Yellowing
Good Deep Cure properties
Good Shelf Stability

To better illustrate the CureAll 900’s capabilities, please see the UV Absorption Spectra data as shown below. Please note the ability of CureAll 900 to initiate cure at shorter wavelengths (Fig.1) as well as the favorable comparison of CureAll 900 to BAPO (in this case, Irgacure® 819) at the longer wavelength end of the spectrum (Fig. 2).

“Completeness of Cure Profile”
(in units of ml gram^-1 cm^-1)

“Through-Cure Capabilities Comparison”
(@ concentrations of 1 x 10^-4 g/ml in toluene)

Fig. 1

Fig. 2

For samples, purchase information, or support, please contact Trilogy Group at (630) 893-8539
For details about the RadAdd® line of UV performance additives, visit www.UVadditives.com

These data are offered in good faith as typical values and not as a Product Specification. No warranty, either expressed or implied, is hereby made. It is the sole responsibility of the user to review these recommendations in the specific context of the intended use and determine whether they are appropriate.