Photoinitiator wavelength match
Pigments competing for UV wavelengths starve the cure, so grades must transmit enough energy for photoinitiators to fully polymerize the film.
Applications
Pigment recommendations for uv curable inks with technical checks and export enquiry support.
UV-curable inks cure instantly under lamps or LEDs, so pigments must not absorb the same wavelengths the photoinitiators need, or they starve the cure and leave under-cured, poorly adhered films. Source From India supplies UV-grade organics selected for photoinitiator compatibility and cure-through, especially in tricky yellows and deep shades. Buyers should confirm cure response under their lamp or LED spectrum, dispersion stability in acrylate monomers, low migration for packaging, and light fastness for outdoor graphics. Well-matched pigments allow full through-cure at production speed without sacrificing color strength or surface hardness.
At a glance
Pigments competing for UV wavelengths starve the cure, so grades must transmit enough energy for photoinitiators to fully polymerize the film.
Narrow-band UV-LED curing is more wavelength-sensitive, so pigment selection must ensure cure-through, especially in deep shades and stubborn yellows.
Pigments must disperse and stay stable in reactive acrylate monomers without seeding or viscosity drift during storage and press running.
UV packaging inks need low-migration pigments that stay locked in the cured film to meet food-contact and compliance requirements.
Recommended pigments
A starting shortlist of export-grade organic pigments relevant to Pigments for UV Curable Inks. Open any grade for shade, fastness and packing detail, or send your requirement for a matched recommendation.
Chlorinated phthalocyanine green for durable industrial coloration.
View export grade Yellow PigmentsHigh-performance yellow for demanding coating and plastic requirements.
View export grade Orange PigmentsDiarylide orange used for inks, textiles, and industrial colorants.
View export grade Pigment PastesWater-dispersible pigment paste for coatings and textile systems.
View export grade Yellow PigmentsBright green-shade yellow for offset ink and coating applications.
View export gradeExplore more
Answers
Photoinitiators need specific UV wavelengths to trigger curing, and pigments that absorb those same wavelengths block the energy, leaving films under-cured and poorly adhered. We select grades that transmit enough curing energy, so ink cures fully through the film even in deeper, more absorbing shades.
LED lamps emit narrow wavelength bands, making cure more sensitive to pigment absorption than broad-spectrum mercury lamps. We advise grades validated for LED cure-through, particularly for yellows and dark colors, so converters switching to energy-efficient LED systems keep full cure at production speed.
Reactive acrylate vehicles can be aggressive, so pigments must resist seeding, flocculation and viscosity drift during storage. We supply grades with proven stability in UV monomer systems, so inks keep consistent rheology and color from manufacture through press without settling or thickening.
Yes. UV inks on food packaging must not migrate through the substrate, so we supply low-migration grades that stay bound in the cured film. Share your packaging and compliance targets and we recommend pigments meeting migration limits while holding color strength and cure performance.
Buyer knowledge base
A quick orientation for buyers new to Indian pigment supply — what to specify, what to expect and how to move fast.
Bags, cartons, pallets and labels planned for clean warehouse handling and clearance.
TDS, SDS/MSDS and batch COA, plus REACH and RoHS declarations issued on request.
Heat, light, weather, solvent and migration resistance matched to the end use, not over-specified.
Sourced at origin through an in-house export desk — one contact from sample to shipment.