Low Oil Absorption — Viscosity Under Control
100% solids UV systems have no solvent to absorb: every component is reactive. A matting agent with high oil absorption strips reactive diluent from the liquid matrix, causing viscosity spikes that destroy flatline levelling and compromise through-cure. HMMAT UV Series is engineered with low oil absorption to remain nearly invisible to the coating's rheology profile, maintaining the flow window necessary for high-speed flatline UV application.
Non-Wax — No Cure Inhibition
Organic wax coatings on conventional silica intercept UV radiation and extend the oxygen inhibition period at the film surface, producing soft or tacky spots in fully cured UV films. HMMAT UV Series uses a UV-compatible non-wax surface treatment that integrates cleanly into the radical crosslink network, delivering consistent 60° surface cure hardness and scratch resistance without inhibition artefacts — critical for OEM UV coating brands that hold cure completeness as a primary specification.
Full Compatibility with Mercury Arc and UV-LED Systems
Lamp technology is shifting from mercury arc to UV-LED across wood, plastic, and industrial UV flatline markets. HMMAT UV Series is validated for both curing technologies and for dual-cure (UV + EB) systems. Matting efficiency and cure completeness remain stable across the UV-A to UV-C spectrum, giving OEM formulating teams freedom to adopt new lamp technologies without reformulation.
FCL Supply at UV Production Scale
UV coating plants consuming matting agent at FCL scale cannot source from lab-scale distributors. SEMITECH ships HMMAT UV Series in 20 MT FCL with locked oil absorption and d50 specification windows, ISO 9001 quality system, private-label packaging, and Shanghai/Ningbo/Tianjin FOB multi-port options — aligned to the economics of continuous UV flatline production.
OEM Supply Capabilities
- Private-Label Packaging: 25 kg PE-lined paper bags, custom brand print
- Minimum Order: 1 FCL (20 MT), scaling to multi-FCL contracts
- Certifications: ISO 9001 + REACH + UV-compatibility test data + RoHS
- Lead Time: 25–35 days first run, 15–20 days repeat orders
- Multi-Port: Shanghai, Ningbo, Tianjin FOB
Grade Selector for UV Coatings
| Grade | d50 / Treatment | DFT Range | Application Fit |
|---|---|---|---|
| HMMAT UV (fine) | 3–5 µm / UV non-wax | 5–15 µm | UV ink, thin-film UV varnish, maximum clarity |
| HMMAT UV (std) | 5–8 µm / UV non-wax | 10–25 µm | UV wood flatline, plastic UV topcoat |
| HMMAT UV (coarse) | 8–12 µm / UV non-wax | 20–40 µm | Thick UV industrial varnish, deep matte |
| HMMAT 200 | 4–9.5 µm / wax | 15–40 µm | UV-tolerant where through-cure is secondary |
Technical FAQ
UV coating formulation challenges and HMMAT UV performance answers.
+Why is low oil absorption critical for UV coating matting agents?
In 100% solids UV systems, matting agents absorb a portion of the reactive diluent and oligomer mixture. High oil absorption silica removes too much reactive monomer from the coating matrix, causing viscosity spikes that degrade levelling, reduce through-cure depth, and compromise film properties. HMMAT UV Series is engineered with low oil absorption to minimise this effect, maintaining the low-viscosity profile needed for flatline UV application at high line speeds.
+Does wax treatment on silica inhibit UV cure?
Organic wax on silica surfaces can act as an oxygen barrier extending the inhibition period and can compete with photoinitiator absorption of UV radiation. HMMAT UV Series uses a non-wax treatment specifically designed for UV compatibility, ensuring photoinitiators receive the full UV dose required for complete surface cure and leaving the matting layer fully integrated into the crosslinked film network.
+What line speeds and UV lamp types are compatible with HMMAT UV-formulated coatings?
Coatings formulated with HMMAT UV Series are compatible with both mercury arc and UV-LED curing systems. At typical loadings of 3–8 wt% and UV doses of 300–600 mJ/cm², full surface and through-cure is achieved at line speeds of 15–50 m/min on flatline wood and plastic substrates.
+Can HMMAT UV Series be used in UV inks as well as UV coatings?
Yes. HMMAT UV Series low oil absorption and non-wax treatment make it suitable for UV offset, flexographic, and screen inks requiring a matte or satin finish. Sub-grades with d50 3–5 µm are recommended for thin-film UV ink applications; d50 5–9 µm sub-grades are appropriate for thicker UV varnishes (15–30 µm).
+What FCL supply terms and technical support does SEMITECH provide for UV coating OEMs?
SEMITECH supplies HMMAT UV Series in 20 MT FCL with locked specification (d50, oil absorption, BET surface area, moisture). Technical support includes formulation starting points, compatibility screening data with common UV oligomer systems, and on-request sample qualification sets for your product registration.
Recommended UV Coating Solution
For 100% solids UV flatline coatings, UV inks, and radiation-cure industrial systems, we recommend the HMMAT UV Series.
SEMITECH matrix · co-purchase