OXE-01 is a high-performance radical-type photoinitiator belonging to the acyl oxaphosphorane family. Its core characteristic is absorbing long-wave ultraviolet light and undergoing direct cleavage upon photon absorption to generate radicals, thereby initiating the polymerization reaction of unsaturated prepolymers (such as acrylates) to achieve coating curing. Due to its unique chemical properties, OXE-01 finds extensive and critical applications in the following fields:

Primary Application Scenarios

1. UV-LED Curing Systems

This represents the most significant and advantageous application area for OXE-01.

• Reason: Traditional mercury lamps emit a broad UV spectrum, whereas UV-LED sources typically emit light at specific wavelengths, most commonly 365nm, 385nm, and 395nm. OXE-01 exhibits strong absorption in the long-wave UVA region (350-420nm), perfectly matching the emission spectrum of UV-LED light sources.
• Application Products:
  • UV-LED Ink Printing (e.g., packaging printing, digital inkjet)
  • UV-LED Coatings
  • UV-LED Adhesives

2. White and Light-Colored Systems

• Reason: Titanium dioxide (TiO₂) is a commonly used white pigment. It strongly absorbs and scatters short-wave UV light (e.g., 254nm), severely shielding photoinitiators. However, TiO₂ is transparent to long-wave UV (UVA). OXE-01 absorbs long-wave UV, enabling effective penetration through white coatings to achieve “deep curing” and prevent poor curing (sticking) at the coating base.
• Application Products:
  • Coatings for white goods (e.g., refrigerators, washing machines)
  • Light-colored wood finishes
  • Varnishes on white paper
  • UV coatings on white plastics (e.g., PVC, ABS)

3. Thick Coatings and Colored Systems

• Reason: Similar to white systems, dark pigments (e.g., carbon black, phthalocyanine blue) absorb and block UV light. OXE-01's long-wave absorption property enables it to penetrate systems with some light-blocking properties, ensuring thorough curing within the coating.
• Applicable Products:
  • Dark metal coatings
  • Thick-film photoresists
  • UV spraying on colored plastics

4. UV Coatings on Plastic Substrates

• Reason: Many plastics (e.g., PC, PVC, ABS) are inherently sensitive to short-wave UV light, prone to yellowing and aging when exposed to intense UV radiation. Using OXE-01 paired with long-wave UV-LED light sources reduces photodamage to substrates while achieving efficient curing.
• Application Products:
  • Hard coatings for automotive plastic components (interior/exterior trim)
  • Plastic casing coatings for electronics (phones, laptops)
  • Functional coatings on plastic films (e.g., scratch-resistant, anti-glare coatings)

5. 3D Printing (Photopolymerization)

• Reason: In SLA (stereolithography) and DLP (digital light processing) 3D printing technologies, photoinitiators must exhibit excellent responsiveness to specific wavelength light sources (particularly DLP projectors around 405nm). OXE-01 is a key component in formulating these printing resins, delivering rapid curing speeds and superior mechanical properties.
• Application Products:
  • High-performance resins for SLA/DLP 3D printers.

Core Advantages Summary

Why is OXE-01 preferred in the above scenarios? Because it offers the following benefits:

1. Long-wave Absorption: Perfectly matches UV-LED light sources and penetrates pigments/thick films.
2. High-Efficiency Curing: Classified as a Type I photoinitiator, requires no co-initiator, and exhibits high decomposition efficiency.
3. Low Yellowing: Its photolysis products exhibit light coloration, minimizing coating yellowing and making it suitable for light-colored and transparent systems.
4. Balanced Surface and Deep Curing: Compared to other photoinitiators (e.g., TPO), it delivers excellent deep curing while maintaining surface curing performance and demonstrating relatively strong antioxidant inhibition.

One point to note: OXE-01 itself is a pale yellow powder. Therefore, in colorless systems requiring extremely high transparency, its addition amount must be carefully controlled. In practical applications, it is often blended with other photoinitiators (such as ITX, 907, etc.) to achieve optimal combined surface and deep-cure effects. In summary, OXE-01 is a key, high-performance photoinitiator for modern UV curing technology, particularly in UV-LED curing and white/colored systems.