Ultraviolet absorbers can quickly convert the absorbed light energy into low-hazard heat energy, and then continue the process of absorbing light.
The theory of action of ultraviolet absorbers is that after absorbing light energy, the molecular structure is converted into an excited state, and then most of the absorbed energy is consumed through molecular resonance to return to the original state, and the light energy starts to be absorbed again.
Category | Product name | Structure | CAS | Form | Melting point | Similar product names |
Ultraviolet absorber | Chiguard 234 | Benzotriazole | 70321-86-7 | P | 137-141C | Tinuvin 234 |
Chiguard 326 | 3896/11/5 | P | 140-141℃ | Tinuvin 326, LA-36 | ||
Chiguard R-455 | Confidential | P | 128-132℃ | Patented product-reactive UVA | ||
Chiguard 1033 | Oxamide (acetanilide) | 23949-66-8 | P | 124-128℃ | Tinuvin 312, Sanduvor vsu | |
Chiguard 380 | Benzofuranone | 18600-59-4 | P | 300Cmin | Cyasorb UV-3638 | |
Chiguard 1064 | Triazines | 2725-22-6 | P | L89-91℃ | Cyasorb 1164 | |
Chiguard 5400 | 153519-44-9 | L | / | Tinuvin 400 | ||
Chiguard GA403 | Confidential | Confidential | P | / | Wavelength <410nm fully shielded patented product |