Photoinitiator is widely used in UV curable systems, such as adhesives, coatings, inks. It produces radicals or cations after absorbing certain UV light energy, then set off polymerization of monomers or oligomers.
In this post, i will introduce you to the 10 most commonly used photoinitiators.
Irgacure 184
| Chemical
Name: | 1-Hydroxycyclohexyl
phenyl ketone | Appearance: | white to
offwhite crystalline power |
| CAS No.: | 947-19-3 | Absorption Peak: | 246nm, 280nm, 333nm. (In methanol solution) |
Irgacure 1173
| Chemical
Name: | 2-Hydroxy-2-methyl propiophenone | Appearance: | colorless to yellowish liquid |
| CAS No.: | 7473-98-5 | Absorption Peak: | 245nm, 280nm, 331nm. (In methanol solution) |
Irgacure 2959
| Chemical
Name: |
2-Hydroxy-4′-(2-hydroxyethoxy)-2-methylpropiophenone | Appearance: | offwhite powder |
| CAS No.: | 106797-53-9 | Absorption Peak: | 276 nm. (In methanol solution) |
Irgacure 369
| Chemical
Name: | 2-Benzyl-2-(dimethylamino)-4′-morpholinobutyrophenone | Appearance: | yellowish powder |
| CAS No.: | 119313-12-1 | Absorption Peak: | 233nm, 324nm. (In methanol solution) |
Irgacure 907
| Chemical
Name: | 2-Methyl-4-(Methylthio)-2-Morpholinopropiophenone | Appearance: | White to slightly brown powder |
| CAS No.: | 71868-10-5 | Absorption Peak: | 230nm, 304nm. (In methanol solution) |
Irgacure 651
| Chemical
Name: | 2,2-Dimethoxy-2-phenylacetophenone | Appearance: | White to yellowish crystalline powder |
| CAS No.: | 24650-42-8 | Absorption Peak: | 250nm, 340nm. (In methanol solution) |
Irgacure 819
| Chemical
Name: | Phenylbis(2,4,6-trimethylbenzoyl)phosphine oxide | Appearance: | yellow powder |
| CAS No.: | 162881-26-7 | Absorption Peak: | 295nm, 370nm. (In methanol solution) |
Photoinitiator TPO-L
| Chemical
Name: | Ethyl (2,4,6-trimethylbenzoyl) phenylphosphinate | Appearance: | yellowish liquid |
| CAS No.: | 84434-11-7 | Absorption Peak: | 273nm, 370nm. (In methanol solution) |
Photoinitiator TPO
| Chemical
Name: | Diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide | Appearance: | yellowish crystalline powder |
| CAS No.: | 75980-60-8 | Absorption Peak: | 295nm, 368nm, 380nm, 393nm. (In methanol solution) |
Photoinitiator ITX
| Chemical
Name: | 2-Isopropylthioxanthone | Appearance: | yellowish crystalline powder |
| CAS No.: | 5495-84-1 | Absorption Peak: | 257.5nm, 382nm. (In methanol solution) |
Photoinitiator MBP
| Chemical
Name: | 4-Methylbenzophenone | Appearance: | White to beige crystalline powder |
| CAS No.: | 134-84-9 | Absorption Peak: | 245nm. (In methanol solution) |
