Products

Spectra Group Limited H-Nu 640 can cure a wide range of acrylate resins via free-radical mechanism. It is a commercial photoinitiator with a broad absorbance range of 570 nm to 670 nm (λmax = 649nm in DMSO).

Spectra Group Limited H-Nu 815 can cure a wide range of acrylate resins via free-radical mechanism. It is a commercial photoinitiator with a broad absorbance range of 690 nm to 850 nm (λmax = 828nm in DMSO).

Spectra Group Limited H-Nu 470 initiates both free-radical and cationic photopolymerization, using a different set of co-initiators depending on the polymerization process • Type II photoinitiator: H-Nu 470 acts as a light harvester, followed by energy or electron transfer to a co-initiator molecule; produced reactive species activate photopolymerization • Commercial photoinitiator (TSCA status: LVE), non-toxic (LD50>5000 mg/kg).

Spectra Group Limited H-Nu 535 initiates both free-radical and cationic photopolymerization, using a different set of co-initiators depending on the polymerization process • Type II photinitiator: H-Nu 535 acts as a light harvester, followed by energy or electron transfer to a co-initiator molecule; produced reactive species activate photopolymerization • Commercial photoinitiator, non-toxic (LD50>2500 mg/kg).

Spectra Group Limited H-Nu 780 can cure a wide range of acrylate resins via free-radical mechanism. It is a commercial photoinitiator with a broad absorbance range of 650 nm to 810 nm (λmax = 791nm in DMSO).

Spectra Group Limited H-Nu 640MP can cure a wide range of acrylate resins via free-radical mechanism. It is a commercial photoinitiator with a broad absorbance range of 570 nm to 670 nm (λmax = 649nm in DMSO).