Study on photoinitiator TPO

Our chemical raw materials products span photoinitiators, photninitiators, water treatment agents, pharmaceutical intermediates,pesticide intermediates and so on.

Photoinitiator TPO is another important component of UV-curable coatings, which is one of the keys to the rapid curing cross-reaction of UV-curable coatings. In 1967, German buyers industrialized UV curing technology, leading to the concept of photoinitiator TPO. Active intermediates that absorb radioactivity, undergo chemical changes, and initiate polymerization are photoinitiators. Its basic features are: In the ultraviolet (uv) interval (200-420 nm) has certain absorption ability, directly or indirectly absorb light, from the ground state to the active excited state, until the stimulus triplet, after a single or double molecular chemistry, can produce monomer polymerization by active fragments (active), such as free radical, cation, anion free radicals or ion.

The mineralogical and chemical properties of the photoinitiator TPO are very important to control the photoinitiation and photopolymerization process, which have the following properties: high extinction coefficient in the ultraviolet and near-ultraviolet region, and high free radical/ionon yield. Non-toxic, tasteless, no yellow degeneration, no volatile; Good mixing with resin, low migration, good storage stability, reasonable price.

In fact, a lot of uv curing system in the generation of active body at the same time, with other auxiliary components in chemistry, promote the generation of active body, improve called engine agent or agents, increase or decrease of photosensitizer start auxiliary initiator efficiency is the important element of the double light initiator molecules, in uv-curing technology, often study auxiliary initiator as the initiator of the body.

What is the research progress of photoinitiator TPO?

The free radical photoinitiator is easy to be polymerized by oxygen in the process of initiating polymerization reaction, so its volume will shrink greatly after curing. Cationic photoinitiators generally have slow curing speed, less suitable monomers and low polymers, and generally higher prices. Therefore, the advancement of technology has put forward a series of new performance requirements for photoinitiators. It has high absorption efficiency in a wide range of radiation spectrum. It has high reactive glass base yield. Good solubility in curing system. Good stability, can be long-term storage. Colorless, not yellow during placement and startup. Tasteless, low toxicity; Low price, low cost.

What is the research status of photoinitiator TPO?

According to the production fragments of photoinitiator TPO, photoinitiators can be divided into free radical photoinitiators, cationic photoinitiators and anionic photoinitiators. In fact, only free radical photoinitiators and cationic photoinitiators are industrialized at present, but free radical photoinitiators are mainly used in our country, and cationic photoinitiators have not been highly industrialized, so there are many studies on free radical photoinitiators. The research of free radical polymerization photoinitiator has a long history and a wide variety, mainly containing chromophore compounds, especially with benzene ring linked compounds containing carbonyl groups, mainly including benzene incense and derivatives, acetophenones, aromatic ketones, acetylene oxide, etc.