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In the diverse world of UV-curable coatings and inks, achieving excellent curing performance in pigmented formulations presents a significant challenge. Pigments, essential for color and opacity, can interfere with the UV light penetration required for photoinitiation. This is where specialized photoinitiators like Photoinitiator 819 (CAS 162881-26-7) demonstrate their critical advantage.
The Challenge of Pigmented Formulations
Pigments, particularly opaque ones like titanium dioxide (TiO2), absorb and scatter UV light. This scattering effect reduces the amount of UV energy that reaches the photoinitiator molecules deeper within the coating or ink layer. Consequently, traditional photoinitiators may struggle to initiate polymerization effectively, leading to incomplete surface cure, poor adhesion, and a tacky finish, especially in thicker films or high-pigment-load systems. This is a common pain point for product formulators and procurement managers seeking consistent quality.
Photoinitiator 819: A Solution for Pigmented Systems
Photoinitiator 819, a Type I photoinitiator from the acylphosphine oxide family, is specifically designed to overcome these limitations. Its key attribute is its strong absorption profile, which extends into the longer UV wavelengths and even into the visible light spectrum (around 365 nm and 405 nm). This unique absorption characteristic allows it to be activated effectively even when UV light penetration is reduced by pigments. It can efficiently absorb photons that might otherwise be scattered or absorbed by the pigment particles.
This dual absorption capability enables Photoinitiator 819 to initiate the free radical polymerization process robustly, even in highly opaque white or vibrantly colored formulations. As a result, it delivers superior through-curing, meaning the entire thickness of the coating or ink layer cures evenly. This leads to enhanced mechanical properties, improved scratch and abrasion resistance, and a flawless aesthetic finish – crucial factors for products where visual appeal and durability are paramount.
Benefits for Manufacturers and Buyers
For manufacturers in industries ranging from automotive coatings and industrial finishes to printing inks and graphic arts, the ability to reliably cure pigmented systems is a significant operational advantage. By incorporating Photoinitiator 819 into their formulations, they can achieve:
NINGBO INNO PHARMCHEM CO.,LTD., as a trusted supplier of Photoinitiator 819 from China, understands the critical need for high-purity and consistent quality. We are equipped to meet the demands of businesses looking to buy this essential photoinitiator for their pigmented formulations. Our commitment to reliable sourcing ensures that you can consistently achieve the high-performance results your customers expect. Reach out to us for a quote and to discuss how our Photoinitiator 819 can benefit your product development and manufacturing processes.
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to Global Customers
1. 20 years of R&D, manufacturing and sales experience, serving customers in 60 countries and regions around the world;
2. Own R&D laboratory, pilot platform and large-scale production workshop, which can meet the audit requirements of global customers;
3. We can satisfy customers' perfect transition from small scale lab requirements (gram level) to commercialization requirements (hundred tons level).
A: We don't have Minimum Order Quantity, exact quantity should be provided before quotation for us to calculate the exact cost.
A: We don't provide free samples due to lots of request and expensive international courier's cost, we can deduct the sample charge after commercial order placed.
A: Our payment terms: Small or sample order: T/T IN ADVANCE. Commercial order: First order should be by T/T IN ADVANCE or L/C at sight, and following orders T/T 30~90days is acceptable subject to approval of credit application.
