Coating anti-mold agent KP-M30 is an environmentally friendly coating anti-mold agent, with the appearance of white powder, its temperature resistance up to 220 ℃. It has a broad-spectrum and long-lasting effect to inhibit mold. It has excellent stability in the dry film and is a new generation of anti-mildew agent for dry film of coatings. It is suitable for the anti-mold treatment of almost all dry film systems.
Two widely used photoinitiators of acetophenone derivatives, 2-hydroxy-2-methyl-1-phenylacetone-1 (HM PP, Ciba’s Daro cur 1173) and 1-hydroxy-cyclohexyl phenone (HCP K, Irg a cure 184 of Ciba Company) appeared in the early 1980s. They all have high initiating activity and will not turn yellow. But its disadvantage is that the absorption wavelength is relatively short, which is not suitable for colored systems.
The later a-aminoalkyl phenones overcome this shortcoming, such as 2-methyl 1-(4-methylmercaptophenyl)-2-morpholine-1-propanone (MM MP, Irg from Ciba) a cure 907) and 2-phenyl-2-dimethylamino-1-(4-morpholinphenyl)-1-butanone (BD MB, Irg a cure 369), the Xua x is 307nm and 324nm, respectively, By thioxanthone sensitization, it can be used in light-curable inks and paints. Aroyl phosphine oxides and aroyl phosphonates with longer absorption wavelengths appeared in the late 1980s and 1990s. Typical examples are 2,4,6-trimethylbenzoyl diphenyl phosphine oxide (TPO) and Bis (2, 4, 6-trimethylbenzoyl) phenyl phosphine oxide (B APO, Ciba’s Irg a cure 819), its absorption wavelength is close to or more than 400nm, and has photobleaching effect, so it can be used for deep-layer light Curing.
In the meantime, a free radical photoinitiator with longer absorption wavelength-titanocene photoinitiator, such as bis[2.6-difluoro-3-(1H-pyrrolyl-1) phenyl] titanocene (Irg a cure 784) appeared. ), its A max reaches 480nm. In recent years, in the research and production of photoinitiators, in addition to the properties of photoinitiation activity and absorption characteristics, the volatility, mobility, and toxicity must also be considered, such as macromolecular photoinitiators or photopolymerization double The photoinitiator of the bond is based on this consideration. There are some macromolecular photoinitiators on the market, such as KIP 150 launched by Lamberti. Because of its low mobility and volatility, it is suitable for occasions with strict odor requirements.
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