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Low-VOC, environmentally compliant formulation meeting stringent global regulatory standards.
Excellent film-forming capability with high clarity and gloss retention after drying.
Superior flexibility and abrasion resistance for demanding coating applications.
Good compatibility with acrylic emulsions and common waterborne additives.
Stable storage at 5–40 °C with shelf life of 12 months in unopened original packaging.
Waterborne wood coatings for furniture and interior flooring.
Leather finishing topcoats requiring soft hand feel and scuff resistance.
Flexible packaging laminating adhesives for food-safe composite structures.
Industrial maintenance coatings for metal substrates in low-emission environments.
Textile coating binders for performance apparel and technical fabrics.
| Chemical Type | Anionic aliphatic polyurethane dispersion |
| Product Form | Opaque white liquid |
| Appearance | Uniform milky dispersion, free of sediment or gel particles |
| Solids Content (wt%) | 30.0 ± 1.0% |
| pH (at 25 °C) | 7.8 – 8.5 |
| Viscosity (mPa·s, Brookfield RVT, #2 spindle, 20 rpm) | 150 – 350 |
| Particle Size (D50, nm) | 80 – 120 |
| Minimum Film Formation Temperature (MFFT) | 15 °C |
Q1: What are the primary application areas for Chan Chem L-2857?
A: Chan Chem L-2857 is widely used in waterborne industrial coatings requiring excellent flexibility, abrasion resistance, and adhesion to diverse substrates — including plastics, metals, and treated wood. It is commonly incorporated into topcoats for automotive trim, furniture finishes, and protective coatings for consumer electronics housings.
Q2: How does L-2857 perform in terms of film formation and drying behavior?
A: L-2857 forms continuous, cohesive films at ambient temperatures with good coalescence properties. Drying time is formulation-dependent but typically achieves tack-free status within 30–60 minutes under standard conditions (23°C, 50% RH), with full property development occurring over several days.
Q3: Is L-2857 compatible with common waterborne acrylic dispersions and crosslinkers?
A: Yes, L-2857 demonstrates broad compatibility with standard anionic and nonionic acrylic dispersions, as well as common waterborne blocked isocyanate and aziridine crosslinkers. Compatibility testing under intended formulation conditions is recommended to confirm stability and performance synergy.
Q4: Can L-2857 be used in low-VOC or zero-VOC coating systems?
A: Yes — as a 100% waterborne polyurethane resin with no added organic solvents, L-2857 supports the development of low-VOC and zero-VOC compliant coatings when formulated with compatible low-VOC additives and crosslinkers.
Q5: What is the typical dosage range for L-2857 in finished coating formulations?
A: Dosage varies by application requirements, but L-2857 is generally used at levels between 10% and 40% by weight of the total binder solids, depending on the desired balance of flexibility, hardness, and chemical resistance.
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E-mail: wangxingqiang@ericwchem.com
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