Photoinitiator 1173

Product Overview

Photoinitiator 1173, chemically recognized as 2-Hydroxy-2-methylpropiophenone, represents a premier class of Type I free radical photoinitiators designed for modern ultraviolet curing technologies. As a critical component in radiation curing systems, this compound facilitates rapid polymerization upon exposure to UV light, enabling high-speed production processes across various industrial sectors. Our manufacturing process ensures exceptional purity levels, minimizing odor and maximizing reactivity for consistent performance in demanding applications.

This liquid photoinitiator is renowned for its excellent solubility in most monomers and oligomers, providing formulators with significant flexibility when designing UV-curable coatings, inks, and adhesives. The molecular structure allows for efficient cleavage under UV irradiation, generating free radicals that initiate the curing chain reaction almost instantaneously. This efficiency translates to reduced energy consumption and higher throughput in manufacturing environments.

Technical Specifications

Industrial Applications

The versatility of Photoinitiator 1173 makes it an indispensable asset for manufacturers specializing in surface coatings and protective layers. Its primary application lies in UV curing systems for unsaturated polyester and multifunctional monomers. Due to its low yellowing characteristics, it is particularly recommended for clear coats and finishes where aesthetic stability under sunlight exposure is paramount.

• Ideal for acrylate series UV curing varnishes applied to paper, metal, and plastic substrates.
• Highly effective in wood coatings requiring long-term weatherability and color retention.
• Compatible with surface layer curing systems where rapid tack-free drying is essential.
• Suitable for printing inks that demand high gloss and scratch resistance.
• Can be seamlessly blended with other photoinitiators to optimize curing depth and speed.

Performance Advantages

Our supply of Photoinitiator 1173 is distinguished by rigorous quality control measures that guarantee batch-to-batch consistency. The product exhibits superior compatibility with a wide range of resin systems, reducing the risk of phase separation or crystallization during storage. Furthermore, its low volatility ensures minimal odor during application, contributing to a safer and more comfortable working environment for operators.

The high transmittance at 425nm indicates excellent clarity, making it suitable for transparent coatings where visual quality is critical. Unlike some alternative initiators, this compound maintains stability over extended periods when stored correctly, ensuring that your production lines remain efficient without unexpected downtime due to material degradation.

Usage Recommendations

To achieve optimal curing results while maintaining low yellowing properties, it is generally recommended to incorporate Photoinitiator 1173 at a concentration of 1% to 4% by weight within the UV-curable formulation. The exact dosage may vary depending on the specific resin system, pigment load, and UV lamp intensity. For applications subject to prolonged sunlight exposure, careful balancing with secondary initiators may be advised to ensure comprehensive curing throughout the film thickness.

Storage and Handling

Proper storage is crucial to maintain the stability and efficacy of this photoinitiator. The product should be stored in a cool, dry, and well-ventilated area, away from direct sunlight and heat sources. Containers must remain tightly closed when not in use to prevent contamination or moisture absorption. As a non-dangerous good according to standard transport regulations, it can be shipped safely in approved chemical drums, typically available in 25kg packaging or customized according to client requirements.