Haihang industry is a professional photoinitiator manufacturer and has been researching and producing photoinitiators since 2010. Dozens of different photoinitiators are now available. The actual effects produced by different photoinitiators vary widely for different applications. Therefore, different types of photoinitiators will be briefly introduced in this product list.
Below is a list of photoinitiator products for Haihang industry
As a new type of photoinitiator, Irgacure 819 is mainly used in the coatings, inks, adhesives and other industries. They have greater absorption in the ultraviolet and visible regions and can initiate curing more effectively than other photoinitiators for pigmented coating systems. The acylphosphine oxide photoinitiators hardly yellow under curing and long-term light radiation, so they can be used in applications where yellowing is critical, such as white, light inks and coatings. In addition, the acylphosphine oxide has a bleaching effect on the light, and the radiation can penetrate the coating, which is beneficial to the complete curing of the thick film.
Irgacure 651, can be used to formulate light-curing adhesive with a maximum absorption wavelength of 337nm. It is suitable for unsaturated polyester/styrene, acrylate, siloxane, and other systems. It has very good thermal stability and high annihilation resistance. And photoinitiator activity, but yellowing is more serious.
Photoinitiator 907 A highly efficient free radical (I) type photoinitiator used primarily for UV polymerization of the corresponding resin. Photoinitiator 907 has a high photoinitiator efficiency with an absorption wavelength of 330 to 385 nm. It is often used in combination with a thioxanthone photoinitiator to enhance light absorption. Used to initiate rapid curing of systems such as acrylates and methyl methacrylate. The photoinitiator 907 can absorb the ultraviolet radiation energy to form a radical or a cation during the curing process of the ink and initiate polymerization, crosslinking and grafting reaction of the monomer and the oligomer, and cure the ink into a short time. A high molecular polymer of a three-dimensional network structure.
The reference dosage is 2%~6%.
Irgacure 184 is one of the most commonly used photoinitiators with high photoinitiation activity, excellent thermal stability, and no yellowing. It has a maximum absorption wavelength of 333 nm and is mainly used to initiate systems such as acrylates and methacrylates. Fast curing.
The reference dosage is 3% to 5%.
Irgacure 307 is a new type of photoinitiator that replaces the traditional Type 907 photoinitiator. Due to its biotoxicity in 2011, it is the most cost-effective alternative to Irgacure907.
Irgacure 1173 is one of the most widely used non-yellowing photoinitiators with a maximum absorption wavelength of 331 nm. It combines with polyester, acrylate, reactive diluents and the like to form a photocurable adhesive. However, in unsaturated polyester/styrene systems, the photoinitiation efficiency of HMPP is inferior to that of benzoin ether photoinitiators. It can also be used in aqueous UV curing systems. The reference dose is from 1.0% to 5.0%. Irgacure 1173 is not suitable for applications where the odor is more stringent. The reason is that the residual initiator is volatile and the photolysis of the initiator produces traces of benzaldehyde and acetone which can cause excessive odor.
Irgacure 369 is a high-efficiency UV photoinitiator with high sensitivity range and high UV absorption for photopolymerization of free radicals. Irgacure 369 has good absorption properties, making it particularly suitable for UV color system curing, especially for blue and black hue systems. It can be used in systems containing UV absorbers, etc.
Offset ink 2 - 4%
Screen ink 2 - 4%
Photoinitiator 2959 is an FDA approved a system that allows for the use of photoinitiators. Low odor, low volatility, low yellowing, can be used in adhesives that are not in direct contact with food. Photoinitiator 2959 is a highly efficient non-yellowing UV photoinitiator used to initiate UV polymerization of unsaturated prepolymerization systems, particularly for low odor, waterborne acrylate, and unsaturated polyester resins.
Irgacure 754 is a high-efficiency, low-odor free radical (I) photoinitiator with low volatility, low odor and low migration, and the activity is comparable to or slightly lower than 1173. Clear varnish commonly used on wood and plastic surfaces. It can be applied to traditional UV curing formulations, especially in areas requiring low odor, low heat release, and low yellowing.
Irgacure 784 has a special photoinitiation mechanism that is ideal for thick and dark curing systems, curing coatings over 70um thick and black, red and high pigment coatings. And Irgacure 784's ultra-wide UV and visible light absorption bands make full use of the light source, so it has high sensitivity and photo-initiating activity. Irgacure 784 photo-disintegrated fragments are complexed with acrylates and have no surface migration, so they are safe and environmentally friendly. Irgacure 784 also has good thermal stability.