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A red iron oxide primer and topcoat formulated with water-soluble epoxy ester resin WL-172B features a high-performance, single-component, quick-drying, rust-preventive composition designed for application on ferrous metal substrates. This versatile coating delivers corrosion protection for both indoor and outdoor steel surfaces while maintaining enduring resistance to rust and degradation across diverse metal applications. It is compatible with various top-coatings, including water-based and alkyd/oil-based finishes. The primer exhibits exceptional hide properties, smooth application, sag resistance, abrasion resistance, and unmatched durability.
Product Properties:
▲ Self-emulsifying process, no emulsifier, excellent water resistance and corrosion resistance;
▲ This product can be oxidized and cross-linked to form film, which can replace the traditional solvent based alkyd and epoxy ester resin;
▲ Paint making process is similar to that of traditional solvent based paint, the resin can be grinded;
▲ Good mechanical stability and storage stability.
Resin Composition:
Waterborne resin, cosolvent, neutralizer
Typical Data:
| Item | WL-172B | Test Method |
| Appearance | Brown viscous liquid | Visual Observation |
| Non-Volatile Matter ( %) | 74±2.0 | GB/T1725-2007 ( 30min@120℃) |
| Viscosity (25℃, mPa.s) | ≤200 | GB/T 21059-2007 NDJ-79 Rotational Viscometer Dilute with PM by 1:1 ratio, then test |
Recommending WL-172B high performance waterborne epoxy ester resin
WL-172B Iron Oxide Red Primer
Reference Formula:
| 1 | WL-172B |
| 2 | N,N-DMEA |
| 3 | Deionized Water |
| 4 | Dispersing Agent |
| 5 | Defoamer |
| 6 | Attapulgite |
| 7 | Iron Oxide Red |
| 8 | Zinc Sulphate |
| 9 | Precipitated Barium Sulphate |
| 10 | Deionized Water |
| 11 | WL-172B |
| 12 | N,N-DMEA |
| 13 | Drier |
| 14 | Sodium Nitrite |
| 15 | Deionized Water |
| 16 | Substrate Wetting Agent |
| 17 | Thickener |
Performance Data:
| No. | Test Item | Test Data | Test Standard |
| 1 | Original Paint Appearance | No lumps, stir evenly | Visual Observation |
| 2 | Paint Film Color | Iron red color | Visual Observation |
| 3 | Original Paint Viscosity(25℃)Ku | 80-90 | GB/T9269-2009 |
| 4 | pH | 8-9 | GB8325-1987 |
| 5 | Fineness μm | ＜35 | GB/T6753.1-2007 |
| 6 | Non-Volatile Matter Content % | 48 | GB/T1725-2007 |
| 7 | Surface Drying Time | ≤20min | GB1728-79 |
| 8 | Hard Drying Time | ≤5hrs | GB1728-79 |
| 9 | Gloss | 10 | GB/T9754-2007 |
| 10 | Hardness (Pencil Method) | HB | GB/T6739-1996 |
| 11 | Flexibility | 1mm | GB/T6742-2007 |
| 12 | Impact Resistance kg.cm | 50 | GB/T1732-1993 |
| 13 | Double Pendulum Hardness | 0.58 | GB/T1730-2007 |
| 14 | Adhesion (Cross-Cut Method) | 1grade | GB/T9286-1998 |
| 15 | Storage Stability | 50℃*4 weeks,no layering, no sedimentation | ———— |
Iron Oxide Red Primer Initial Water Resistance
Substrate:tinplate
Film thickness:23±3μm
| Time | Water Drenching Test Data |
| Air Drying 24hrs | 48hrs no abnormalities |
| Air Drying 72hrs | 96hrs no abnormalities |
| Air Drying 168hrs | 168hrs no abnormalities |
Iron Oxide Red Primer Anti- Corrosive Properties
Substrate:carbon steel plate
Film thickness:45±5μm
| Item | Test Data |
| Salt fog resistance | 72hrs no abnormalities |
| Salt water resistance | 120hrs no abnormalities |
Resistant to Salt Fog for 48 hours
Resistant to Salt Fog for 96 hour
Resistant to Salt Fog for 144 hours
Resistant to Salt Water for 120 hours
Resistant to Salt Water for 144 hours
WL-172B Iron Oxide Red Primer
Reference Formula:
| 1 | WL-172B |
| 2 | N,N-DMEA |
| 3 | Deionized Water |
| 4 | Dispersing Agent |
| 5 | Defoamer |
| 6 | Attapulgite |
| 7 | Titanium Dioxide |
| 8 | Carbon Black |
| 9 | Precipitated Barium Sulphate |
| 10 | Deionized Water |
| 11 | WL-172B |
| 12 | N,N-DMEA |
| 13 | Drier |
| 14 | Deionized Water |
| 15 | Substrate Wetting Agent |
| 16 | Thickener |
Performance Data:
| No. | Test Item | Test Data | Test Standard |
| 1 | Original Paint Appearance | No lump, stir evenly | Visual Observation |
| 2 | Paint Film Color | Gray | Visual Observation |
| 3 | Original Paint Viscosity(25℃)Ku | 80-90 | GB/T9269-2009 |
| 4 | pH | 8-9 | GB8325-1987 |
| 5 | Fineness μm | ＜30 | GB/T6753.1-2007 |
| 6 | Non-Volatile Matter Content % | 48 | GB/T1725-2007 |
| 7 | Surface Drying Time | ≤3min | GB1728-79 |
| 8 | Hard Drying Time | ≤16hrs | GB1728-79 |
| 9 | Gloss | 90-92 | GB/T9754-2007 |
| 10 | Hardness(pencil method) | HB | GB/T6739-1996 |
| 11 | Flexibility | 1mm | GB/T6742-2007 |
| 12 | Impact Resistance kg.cm | 50 | GB/T1732-1993 |
| 13 | Double Pendulum Hardness | 0.4 | GB/T1730-2007 |
| 14 | Adhesion(Cross-Cut Method) | 1grade | GB/T9286-1998 |
High Gloss Gray Topcoat Hardness Increase
Substrate:glass pane
Film thickness:23±3μm
Ambient temperature:25±5℃
Ambient humidity:50±2%
| Double Pendulum Hardness(glass pane) | ||
| Time | Drier 0.52% | Drier 0.85% |
| 24hrs | 0.19 | 0.22 |
| 48hrs | 0.25 | 0.27 |
| 72hrs | 0.28 | 0.32 |
| 120hrs | 0.53 | 0.53 |
High Gloss Gray Topcoat Initial Water Resistance
Substrate:tinplate
Film thickness:23±3μm
| Time | Water drenching before adjustment | Water drenching after adjustment |
| Air Drying 24hrs | 24hrs no abnormalities | 48hrs no abnormalities |
| Air Drying 72hrs | 44hrs no abnormalities | 56hrs no abnormalities |
| Air Drying 168hrs | 96hrs no abnormalities | 144hrs no abnormalities |
