4-Benzoylphenyl acrylate (22535-49-5), a kind of photoinitiator with unlimited potential

Photocuring technology refers to the absorption of specific wavelength photons by photoinitiator under the irradiation of light, generating free radicals or cations, triggering polymerization and cross-linking reaction of monomer and oligomer, generating polymer with mesh structure in a very short time, and then realizing curing. And the photoinitiator is a kind of compound absorption of ultraviolet or visible radiation energy, so that the oligomer and diluent quickly from liquid into solid compounds, is the core component of the photocuring material. In recent years, due to the long-term stagnation of overseas economic growth and the expiration of patent protection of most photoinitiators, the global production capacity of photoinitiators has been gradually transferred to China. From 2012 to 2019, China's output of photoinitiator increased from 18,900 tons to 38,400 tons, with a compound annual growth rate of more than 10%.

Since the 21st century, China's light curing industry has developed at a fast speed, and has become the third largest production area of light curing products in the world after the United States and Japan. In recent years, ITX, DETX, TPO, 907 and other efficient photoinitiators have gradually become the main products of domestic enterprises, mainly used in 3D printing, display panel, PCB ink and other fields.

Photoinitiator plays an important role in the production of photocurable materials, but the amount of use is not large, the amount of use is about 3%-5% of the photocurable materials, and the cost is about 11%. Because photoinitiator has little influence on downstream cost, the amount of addition is relatively small, there is no obvious substitution relationship between different varieties, and different products have different uses. For different downstream application fields, photoinitiator has different characteristics, especially the domestic production capacity is actually monopolized by a few enterprises, so the bargaining power is strong, enterprises tend to transmit the cost to the downstream.