Photoinitiator 1173

Product Overview

Photoinitiator 1173, chemically known as 2-Hydroxy-2-Methylpropiophenone, represents a cornerstone solution in modern ultraviolet curing technology. As a highly efficient Type I radical photoinitiator, it is engineered to facilitate rapid polymerization upon exposure to UV light. This product is specifically designed for manufacturers seeking superior performance in unsaturated polyester systems and multifunctional monomer applications. Our grade ensures consistent quality, meeting the rigorous demands of industrial coating and ink production lines.

The compound is recognized for its exceptional balance between reactivity and stability. Unlike traditional initiators that may compromise the aesthetic quality of the final product, Photoinitiator 1173 is formulated to minimize yellowing over time. This makes it an ideal choice for clear coats, white pigmented systems, and applications where long-term color retention is critical. The low odor profile further enhances its suitability for indoor applications and environments with strict volatile organic compound (VOC) regulations.

Key Performance Features

• High Photoreactivity: Ensures fast curing speeds even at low concentrations, improving production throughput.
• Non-Yellowing Properties: Maintains excellent color stability in finished products, crucial for high-end decorative finishes.
• Low Odor Formulation: Reduces workplace exposure concerns and improves the environmental profile of the final cure.
• Versatile Compatibility: Easily compounded with other photoinitiators to tailor curing profiles for specific substrates.
• High Purity Standard: Manufactured under strict quality control to ensure batch-to-b consistency.

Technical Specifications

Industrial Applications

This photoinitiator is extensively utilized across various sectors requiring UV-curable formulations. In the coatings industry, it serves as a primary initiator for wood finishes, plastic coatings, and metal decorators. The ink manufacturing sector relies on this product for UV-curable offset and flexographic inks, where fast setting times are essential for high-speed printing processes. Additionally, it is effective in adhesive formulations, providing strong bond strength and rapid fixture times.

For optimal results, the recommended dosage typically ranges between 1% and 4% of the total formulation weight, depending on the specific resin system and UV lamp intensity. It functions synergistically with amine synergists to enhance surface cure and overcome oxygen inhibition. Technical teams should conduct small-scale trials to determine the exact loading required for specific substrate combinations.

Storage and Handling

To maintain product integrity, Photoinitiator 1173 should be stored in a dry, well-ventilated warehouse away from direct sunlight and heat sources. The containers must remain sealed when not in use to prevent moisture absorption and contamination. Although classified as non-dangerous goods for transport, standard industrial safety protocols apply. Avoid contact with eyes and skin, and ensure adequate ventilation during handling. Proper storage conditions ensure the product retains its specified reactivity and physical properties throughout its shelf life.