NAVIGATION

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Featured Photoinitiators

Beyond conventional photoinitiator types, Alfa Chemistry also offers a diverse portfolio of featured photoinitiators designed to address specialized formulation and application needs. These products provide higher curing efficiency; lower migration, improved environmental compatibility, and greater formulation flexibility, helping customers meet elevated performance expectations and regulatory compliance requirements across a wide range of photocurable systems.

Our Products

Featured Replacement Products

Alfa Chemistry provides a series of Featured Replacement Products developed to serve as effective alternatives to conventional or restricted photoinitiators. These products are engineered to offer comparable or improved reactivity, solubility, and compatibility while addressing concerns such as migration, odor, or regulatory limitations.

Polymeric Initiators

Unlike small-molecule initiators, polymeric initiators are incorporated into the polymer network during curing, significantly lowering extractables and enhancing safety for sensitive applications such as food packaging, medical devices, and electronics. Alfa Chemistry's polymeric initiators are carefully designed to balance molecular weight, photoreactivity, and compatibility, ensuring efficient initiation without compromising mechanical or optical properties.

Water-Soluble Photoinitiators

With the growing emphasis on environmentally friendly formulations, Water-Soluble Photoinitiators have become increasingly important. Alfa Chemistry offers water-soluble options tailored for aqueous UV-curable systems, including waterborne coatings, inks, and overprint varnishes.

Difunctional Initiators

Difunctional Initiators contain two reactive initiating groups within a single molecule, providing higher initiation efficiency and improved crosslinking density. Alfa Chemistry's difunctional initiators are particularly valuable in applications requiring superior mechanical strength, chemical resistance, and thermal stability.

Product Parameters

Type		Catalog Number	Description	Physical State	Reactivity	Surface Cure	Depth Cure	Yellowing	Odor
Featured Products	TPO Replacement	ALCM-PI-0029	LED sensitive phosphine oxide with low yellowing, low odor, good compatibility, high activity.	Off-white solid	•••	•••	•••	Low	Low
	TPO Replacement	ALCM-PI-0030	Low yellowing, low odor, high activity.	Yellow solid	••••	••••	•••	Low	Low
	379 Replacement	ALCM-PI-0031	A high molecular weight initiator for low migration, Low odor, low yellowing, high reactivity and photosensitivity. Ideal for 379 replacement.	Off-white solid	•••	•••	••	Low	Low
	907 Replacement	ALCM-PI-0032	A novel classification-free alpha amino ketone. Low yellowing and excellent reactivity. An ideal replacement for 379 or 907.	Off-white solid	••••	••••	••	Low	Low
	Low Yellowing	ALCM-PI-0033	A liquid benzyl formate initiator with low odor, extremely low yellowing, and high reactivity.	Yellow liquid	•••	•••	••	Low	Low
	Low Yellowing	ALCM-PI-0034	A novel powder photoinitiator for extremely low yellowing with high reactivity.	Off-white solid	•••	•••	••	Low	Low
Polymeric Initiators	Polymeric Thioxanthone	ALCM-PI-0035	Yellow powder, high molecular weight with great reactivity, suitable for colored formulas.	Yellow solid	•••	•••	•••	High	Low
Polymeric Initiators	Polymeric Benzophenone	ALCM-PI-0036	A premium polymeric benzophenone for low migration. Low yellowing, low viscosity and low odor with high reactivity.	Yellow liquid	••	••	••	Low	Low
Water-Soluble Photoinitiators	Acylphosphine Oxides	ALCM-PI-0037	Water-soluble, low odor, high activity, low yellowing	Off-white solid	•••	••	••••	Low	Low
Water-Soluble Photoinitiators	Acylphosphine Oxides	ALCM-PI-0038	Water-soluble, low odor, high activity, low yellowing	Off-white solid	••••	••	••••	Low	Low
Difunctional Initiators	α-Hydroxy ketone	ALCM-PI-0039	Low yellowing, low odor, high activity, solid powder. Great for surface cure.	Off-white solid	••••	••••	••	Low	Low
Difunctional Initiators	α-Hydroxy ketone	ALCM-PI-0040	Low yellowing, low odor, high activity, solid powder. Great for surface cure.	Off-white solid	••••	••••	••	Low	Low

With reliable supply, customization capability, and a commitment to innovation, Alfa Chemistry is a trusted partner for developing next-generation photocurable materials. If you are interested in our products or would like more detailed technical information, please feel free to contact us. Our team will be pleased to discuss your specific application requirements and provide tailored solutions.

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