In the synthesis of polyurethane acrylate, hydroxyl acrylate reacts with NCO groups to introduce acryloyloxy groups, which are generally present at the chain ends of polyurethane prepolymers.

In the large family of photocurable resins, in addition to the "tough guy" epoxy acrylate, another important type of resin is polyurethane acrylate, which is abbreviated as PUA. This all-round talent has shown his prowess in the fields of photocurable coatings, inks, adhesives, etc. Although it is slightly inferior to epoxy acrylate, it is also quite popular. It is synthesized from raw materials such as long-chain diols, polyisocyanates and hydroxy acrylates. Since these three raw materials have a variety of structures and models to choose from, through clever molecular design, whether it is flexibility, hardness or wear resistance, PUA can be "designed" in advance to meet the needs of different scenarios. This flexibility makes PUA the one with the "most product brands" among photocurable resins.

In the photocuring industry, phenolic epoxy acrylate is an indispensable raw material in printed circuit boards. As a photocuring resin manufacturer, Bossin will talk about phenolic epoxy acrylate today.

Drill a small hole in a wooden barrel filled with water and then use a light to illuminate the water surface from above the barrel. Next, an amazing scene happens as the water flows out of the hole, the light also presents a curved trajectory, as if the light is ‘captured’ by the water flow.