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A photoinitiator is a compound that undergoes a photoreaction on absorption of light, producing reactive species. These are capable of initiating or catalyzing chemical reactions that result in significant changes in the solubility and physical properties of suitable formulations.

For over 30 years, Hampford Research Inc. has manufactured free radical photoinitiators based on the hexaaryl-bisimidazolyl (HABI) molecule. Through careful modification of the substituents on the aryl groups, HRI has been able to significantly improve the performance at 365, 395 & 405 nm, the wavelength most commonly emitted by LED lights. These innovative new compounds will still produce stable lophyl radicals and offer resistance to oxygen inhibition that HABI’s are known for.

All HABI photoinitiators operate via a Norrish II type reaction mechanism, meaning they must be combined with a suitable co-initiator in order attain complete photo-polymerization. Hampford Research experts can help you choose the ideal combination for your application.

The high molecular weight as well as the low polarity of the HABI molecule makes it ideal for applications where low migration characteristics are paramount.

HABI, for LED applications is sold exclusively under the LEDCUR tradename.

For more information, or to request samples please CLICK HERE.

FP CODE NAME DESCRIPTION
FP5378 LEDCUR 120 Free radical photoinitiator optimized for use with 360 nm LED lamps
FP5380 o-Cl HABI Free radical photoinitiator with outstanding heat stability
FP5385 LEDCUR 110 Free radical photoinitiator optimized for use with 360 nm LED lamps
FP5388 2-Carboxy HABI Water soluble free radical photoinitiator
FP5450 TCDM HABI Free radical photoinitiator optimized for use with 385 nm LED lamps

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