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Product Category / UV & EB Curing

UV / EB Curing — Photoinitiators, Oligomers & Pre-Formulated Coatings

19 UV and electron-beam curing SKUs across four chemistry families — Type I α-cleavage and Type II hydrogen-abstraction photoinitiators (Irgacure 184, TPO, BAPO, BP, 819), amine synergists (EDAB / MDEA), the four primary oligomer backbones (urethane, epoxy, polyester acrylate) and pre-formulated UV adhesives / clear coatings. Drop-in functional alternatives to IGM Resins Omnirad, BASF Irgacure, Lambson Speedcure, Allnex EBECRYL and Sartomer SR-series. 25 kg MOQ, 2–4 week lead time, CoA + MSDS on request.

Photoinitiators — Type I & Type II

Norrish Type I α-cleavage initiators (Irgacure 184, TPO, TPO-L, BAPO, 819-phosphine-oxide) for fast surface and through-cure in clear UV systems. Type II hydrogen-abstraction photoinitiators (benzophenone / BP) paired with amine synergists for low-yellowing pigmented systems. Drop-in alternatives to IGM Resins Omnirad, BASF Irgacure, and Lambson Speedcure ranges.

Photoinitiator 184 (1-Hydroxycyclohexyl Phenyl Ketone)
CAS 947-19-3
Photoinitiator 184 for UV coatings and inks. Delivers excellent surface cure with low yellowing; compatible with acrylate resins and optical…
Photoinitiator Irgacure 184
CAS 947-19-3
1-Hydroxy-cyclohexyl-phenyl ketone photoinitiator Irgacure 184 for UV-curable inks and clearcoats. General-purpose Type I initiator.
Photoinitiator TPO (Acylphosphine Oxide)
CAS 75980-60-8
TPO (CAS 75980-60-8) acylphosphine oxide photoinitiator for white and thick UV coatings. Superior deep-cure, low yellowing, 370–420 nm absor…
Photoinitiator TPO-L (Diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide liquid)
CAS 84434-11-7
TPO-L liquid photoinitiator for UV inks, inkjet, and varnishes. ~370 nm absorption, ≥98% purity, solvent-free liquid for easy formulation.
Photoinitiator Irgacure 819
CAS 162881-26-7
Bis-acylphosphine oxide photoinitiator Irgacure 819 for deep-pigmented UV inks. High absorption at 370–400 nm for LED curing.
Photoinitiator BAPO (Phenylbis(2,4,6-trimethylbenzoyl)phosphine oxide)
CAS 162881-26-7
BAPO photoinitiator for deep-cure pigmented UV inks and white UV systems. Dual absorption at 295 & 370 nm, ≥98% purity, excellent LED-UV per…
Photoinitiator Blend TPO/184 for UV Coatings
Pre-blended 50:50 TPO/184 photoinitiator for UV wood coatings. LED-compatible, broad lamp response, balanced surface and deep cure at 2–4%.
Benzophenone Photoinitiator BP
CAS 119-61-9
Benzophenone (CAS 119-61-9) Type II photoinitiator for UV coatings and inks. Cost-effective workhorse PI with 300–350 nm absorption; use wit…

Amine Synergists

Tertiary amine synergists (EDAB, MDEA) that scavenge oxygen and donate hydrogen to Type II photoinitiators — essential for pigmented and air-cure UV coatings where benzophenone alone yields tacky surfaces.

Amine Synergist EDAB (Ethyl 4-Dimethylaminobenzoate)
CAS 10287-53-3
EDAB amine synergist for UV flexo and offset inks. Enhances surface cure, reduces oxygen inhibition, and boosts Type II photoinitiator effic…
Amine Synergist MDEA for UV Curing
CAS 105-59-9
MDEA amine synergist for benzophenone UV systems. Enhances surface cure, reduces oxygen inhibition, and offers low yellowing in UV coatings …

UV-Cure Oligomers & Resins

Aliphatic urethane acrylate (yellowing-resistant for outdoor and wood top-coats), aromatic urethane acrylate (cost-performance balance for industrial coatings), epoxy acrylate (hardness and chemical resistance), and polyester acrylate (flexibility and adhesion to plastics). The four oligomer families that cover ~80% of UV-cure formulation needs.

Aliphatic Urethane Acrylate UA-5200 (Flexible)
Hexafunctional aliphatic urethane acrylate UA-5200 for flexible UV coatings, leather finishes, and over-print varnishes. Low Tg, excellent e…
Urethane Acrylate Oligomer UA-8200
CAS 72162-39-1
Aliphatic urethane diacrylate oligomer UA-8200 for UV wood coatings and overprint varnishes. Excellent toughness and scratch resistance.
Epoxy Acrylate Oligomer EA-300 (Hard, Bisphenol-A based)
Hard BPA-based epoxy acrylate EA-300 for UV printing varnishes and can coatings. High Tg 80–100°C, excellent chemical resistance, low color.
Polyester Acrylate Oligomer PA-600
Difunctional polyester acrylate PA-600 for UV wood coatings, flexo inks, and gravure varnishes. Low color, balanced hardness and flexibility…

Pre-Formulated UV-Cure Coatings & Adhesives

Ready-to-use UV-cure systems — clear barrier coatings, acrylate sealant base, urethane-acrylate adhesive, and epoxy-acrylate hybrid adhesives. For formulators who want a finished base rather than building from raw oligomer + photoinitiator + monomer.

UV-Barrier Clear Coating Resin UBC-70
CAS 25767-47-9
UV-blocking transparent coating resin UBC-70 for optical films and display protection. >99% UV block below 380 nm with excellent clarity.
UV-Curable Acrylate Sealant Base UCA-300
UV-curable urethane acrylate blend; cures in <5 s at 365 nm with optical clarity for electronics display bonding and optoelectronic sealing.
UV-Curable Urethane Acrylate Adhesive UCUA-70
Aliphatic urethane diacrylate adhesive (70% in HDDA) for LED/UV-cure structural bonds. High elongation 60%, tensile strength 15 MPa, optical…
UV-Curable Epoxy Acrylate Adhesive UEA-80
UV-cure epoxy acrylate for rigid assembly. >30 MPa tensile, 365 nm cure, strong adhesion to glass, metal, and polycarbonate for electronics …
UV-Curable Epoxy Acrylate EB-600
CAS 55818-57-0
Difunctional epoxy acrylate EB-600 for UV-curable flexo varnishes and overprint coatings. Fast cure speed and high gloss.

Need TDS, sample, or UV formulation guidance?

Coatingsink technical team supports photoinitiator selection (Type I vs Type II), oligomer-to-monomer ratio guidance, oxygen-inhibition troubleshooting, and IGM / BASF / Sartomer drop-in equivalents. Samples from 100 mL on request.

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