The HMMAT WB Series is our OEM bulk-supply line of hydrophilic-compatible silica matting agents for downstream waterborne and zero-VOC coating manufacturers. Identical chemistry to the GMATT WB retail line — the same ultra-high pore volume (≥2.0 ml/g) and zero-seeding hydrophilic treatment — supplied under contract with 25 MT FCL minimums and private-label packaging. Built for downstream eco-friendly coating OEMs serving architectural, furniture, and metal-finish markets where VOC compliance is non-negotiable.
Key Features
- Zero-Seeding Guarantee per FCL: Every contract lot ships with a zero-agglomeration QC certificate — critical for downstream waterborne brand reputation.
- Contract-Grade Hydrophilic Treatment: Locked surface-treatment profile across FCL lots — no downstream re-qualification needed between batches.
- Ultra-High Efficiency: Extreme pore volume (≥2.0 ml/g) means downstream formulators use 30-40% less material vs standard waterborne grades.
- PUD & Acrylic Compatible: Refractive index match guarantees zero hazing in downstream brand waterborne wood clear coats.
OEM Capabilities
- Private-Label Packaging: Your brand on 20 kg bags or 500 kg bulk bags
- Custom MOQ: 1 FCL (20 MT) entry to multi-FCL annual contracts (150+ MT/year typical for waterborne OEMs)
- Audit-Ready: ISO 9001 + REACH + zero-VOC declaration + 21 CFR 175.300 dossier
- Just-In-Time Program: Monthly call-off with locked annual pricing
- Multi-Port Shipping: Shanghai, Ningbo, Tianjin FOB; CIF terms negotiable
Applications
Trusted by leading downstream waterborne OEMs across:
- High-end Waterborne Wood Coatings (Clear & Pigmented)
- Waterborne Industrial & Metal Finishes
- Waterborne Leather Finishes & Topcoats
- Eco-friendly / Zero-VOC Architectural Coatings
HMMAT WB Series: Grade Selector
Waterborne clear coats are highly sensitive to particle size mismatch. Match the grade to your downstream customer's Dry Film Thickness (DFT) target.
| Grade | Spec | Recommended DFT | Notes |
|---|---|---|---|
| HMMAT W450 | d50 4.5 – 5.0 µm | < 15 µm (Thin Film) | The ultimate choice for ultra-thin waterborne wood clear coats and leather finishes. Provides unparalleled transparency and a highly refined, silky touch. |
| HMMAT W550 | d50 5.5 – 6.0 µm | 15 – 25 µm (Medium Film) | The universal standard for waterborne furniture and general industrial coatings. Delivers perfect balance between extreme matting efficiency and clarity. |
General Properties
Typical properties for the HMMAT WB Series. Featuring ultra-high pore volume (≥2.0 ml/g) engineered for water-based resin systems, with FCL-level statistical batch control.
| Parameter | Typical Value | Unit |
|---|---|---|
| Pore Volume | ≥ 2.0 | ml/g |
| Oil Absorption | 210 – 260 | g/100g |
| Loss on Drying (2h @ 105°C) | ≤ 5.0 | % |
| Loss on Ignition (2h @ 1000°C) | ≤ 10.0 | % |
| pH Value (5% aqueous) | 6.0 – 8.0 | – |
| SiO₂ Content (dry basis) | ≥ 99.0 | % |
| Surface Treatment | Special Treatment (WB Optimized) | – |
- Typical values only. Not for sales specifications. Refer to COA for batch data.
OEM Procurement Workflow
- Spec & Volume Brief: Submit target d50, downstream waterborne system (PUD / acrylic / hybrid), and annual or per-FCL volume.
- Sample Match: 1 kg lab match shipped within 5 days; downstream QC verifies zero-seeding behavior in your aqueous resin; sign-off triggers contract drafting.
- First FCL Contract: 25 MT pilot shipment under your private label, full COA chain + zero-seeding certification per batch, ISO + REACH + zero-VOC declaration delivered.
- Repeat Replenishment: Scheduled call-off (monthly typical for waterborne OEM volumes) with locked-in annual pricing.
Cross-reference
Frequently Asked Questions
Common questions from OEM procurement teams running waterborne and zero-VOC programs.
+Can HMMAT WB be private-labeled and certified zero-VOC?
Yes. Every FCL ships with a zero-VOC declaration suitable for downstream eco-label certification (Greenguard, EU Ecolabel, China 10-ring). Your brand appears on the bag; the zero-VOC dossier is provided as a separate document for your customer's compliance audit.
+What is the minimum FCL order and lead time for WB-grade silica?
Minimum is 1 × 20-foot FCL (~20 MT WB-grade silica). Lead time is 30-40 days for a first private-label run (WB grades require dedicated mother-batch staging to verify zero-seeding); 20-25 days for repeat orders under an active contract.
+Do you support audits from our downstream architectural-coating brand customers running eco-labels?
Yes. Downstream waterborne brands serving the EU Ecolabel and Greenguard markets routinely audit our Shanghai plant. We provide full process documentation, zero-VOC verification per batch, and host downstream brand audits under NDA.
+How is zero-seeding behavior verified per batch?
Every HMMAT WB FCL ships with a zero-seeding verification certificate from our QC lab, confirming behavior in standard waterborne PUD and acrylic resin systems via 7-day storage stability and Hegman gauge readings. This is critical for downstream WB brands that cannot afford field complaints about hard particles.