BASF DAROCUR 1173 is a Type I free-radical UV photoinitiator in the DAROCUR® series, 2-hydroxy-2-methyl-1-phenyl-1-propanone, colorless to pale yellow liquid, low-odor/non-yellowing, initiating polymerization under UV, ideal for UV-curable acrylic varnishes, water-based dispersions, flexo inks, electronic coatings, FDA-compliant for indirect food contact.
Efficient UV initiation - Rapid free-radical generation under UV, accelerating curing speed, shortening production cycle
Excellent non-yellowing - Minimizes yellowing, ensuring long-term color stability, suitable for outdoor and light-colored systems
Superior miscibility & compounding - Compatible with most monomers/oligomers, usable alone or with other photoinitiators
Low odor & migration - Mild odor, low migration, suitable for food-contact compliant formulations
Easy processing & stability - Liquid form, easy to add, pump and mix, consistent batch performance
UV-curable acrylic varnishes - For paper, metal, plastic surfaces, improving gloss and weather resistance
Water-based UV dispersions - Suitable for water-based UV-curable coatings, ensuring curing efficiency and storage stability
Flexo & screen inks - For packaging printing inks, enabling rapid curing and color stability
Electronic coatings - For PCB solder masks, optical film coatings, ensuring fine-pattern curing
Wood & plastic coatings - For UV-curable topcoats on furniture and plastic parts, enhancing non-yellowing
| Brand | BASF |
| Chemical Type | Type I free-radical UV photoinitiator (α-hydroxyalkylphenone) |
| Chemical Name | 2-hydroxy-2-methyl-1-phenyl-1-propanone |
| CAS No | 7473-98-5 |
| Appearance (25℃) | Colorless to pale yellow transparent liquid |
| Molecular Weight | 164.2 g/mol |
| Density (20℃) | 1.077 g/cm³ |
| Melting Point | 4℃ |
| Viscosity (20℃) | 25 mPa·s |
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