Photoinitiators are compounds that produce various active species under light irradiation. Photoinitiators are broadly categorized into "photoradical generators," "photoacid generators," and "photobase generators," depending on the generated active species. Below are our "photobase generators" that produce organic bases under light irradiation, "photocationic initiators" and "photoacid generators" that produce acids under light irradiation, and "azo polymerization initiators" that generate radicals.
Photo base generators
A photo base generator is a compound which generates organic base such as an amine upon irradiation of light in the UV range. The generated organic base accelerates an anionic UV curing of epoxy resin, sol-gel method, etc.
Photo cationic initiators
Photo cationic initiators are compounds that generate an acid upon UV irradiation. Since various acids derived from anionic sites are generated, they are used for various polymerization reactions such as epoxy curing. We have a lineup of iodonium-type cationic initiators with substituents such as long-chain alkyl groups, which have high compatibility with resins and low volatility of benzene by-produced after photolysis, resulting in low toxicity. In addition, iodonium salts have high photodegradability, and it is possible to improve sensitivity and extend the wavelength by using sensitizers.
Photo acid generators
Our photo acid generator product line has proven quality and performance for excimer resist applications with industry leading resist manufactures. We can supply products of varied grades from high grade to multipurpose grade. We also provide custom synthesis of PAGs.
Azo polymerization initiators
An azo polymerization initiator is a compound having an azo group (R-N=N-R'), which decomposes with heat and/or light, and forms carbon radical. The formed carbon radical is excellent in reactivity and progresses polymerization and halogenation reactions of different types of vinyl monomers.
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