Benzophenone photoinitiators are the simplest hydrogen abstraction type photoinitiators with simple structure. They are the cheapest photoinitiators. However

it has the disadvantages of low activity

slow photocuring rate and easy yellowing. In order to solve the shortcomings of benzophenone itself and give full play to its advantages

scientists have developed novel and mature benzophenone photoinitiators for varieties and their properties. This article will introduce the new benzophenone macromolecular photoinitiators

polymerizable photoinitiators

aqueous photoinitiators

and hybrid photoinitiators developed by scientists in recent years

and review their research progress and application value in various fields.