Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Youwei Chemical API-309 UV-LED Photoinitiator

YouweiChemicalAPI-309isahigh-efficiencyUV-LEDphotoinitiatorfromtheAPIseries,specificallydesignedfor365–405nmLEDcuring.Unequalledreactivity,lowmigration,andexcellentsolubilitymakeitidealforinkcoatingsandadhesivesensitivetoheatorvolatileorganiccompounds.
  • youwei chemical api 309 uv led photoinitiator_17176ab0
  • youwei chemical api 309 uv led photoinitiator_17176ab0

Features Of Youwei Chemical API-309 UV-LED Photoinitiator

  1. High reactivity under 365–405 nm UV-LED irradiation, enabling rapid curing at low energy input.

  2. Low yellowing tendency post-cure, ensuring excellent clarity and color stability in transparent coatings.

  3. Excellent solubility in common acrylate monomers and oligomers, facilitating homogeneous formulation blending.

  4. Minimal volatile organic compound (VOC) emission, supporting eco-friendly and compliant industrial processes.

  5. Good thermal stability up to 120°C, reducing premature decomposition during storage and processing.

Typical Applications Of Youwei Chemical API-309 UV-LED Photoinitiator

  1. UV-LED curable inkjet inks for digital printing on rigid and flexible substrates.

  2. Optical adhesives and laminating resins used in display and touch panel assembly.

  3. Hard-coat formulations for plastic lenses, automotive interior trim, and optical films.

  4. 3D printing resins requiring high-resolution, low-shrinkage polymerization under LED light sources.

  5. Wood and plastic clear topcoats with fast line-speed curing in roll-to-roll and conveyor systems.

Specifications Of Youwei Chemical API-309 UV-LED Photoinitiator

Chemical TypeAlpha-hydroxy ketone derivative
Product FormPale yellow to off-white crystalline powder
AppearanceFree-flowing crystalline solid
Primary ApplicationsUV-LED curable acrylate-based coatings, inks, and adhesives
Key FeaturesLED-optimized, low migration, non-yellowing
BenefitsEnergy-efficient curing, improved surface hardness, reduced odor
SolubilityReadily soluble in isopropanol, ethyl acetate, and common acrylates
Storage ConditionsStore below 30°C in original sealed container, protected from light and moisture


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