Styrene Acrylic Lotion BLJ-816 - High Gloss and Durability for Coatings
Product Overview
Styrene Acrylic Latex BLJ-816 is a high-performance, non-hazardous aqueous copolymer emulsion engineered for formulating premium architectural coatings. Produced in Shanghai, China, this resin combines styrene’s rigidity with acrylic’s flexibility, enabling exceptional gloss retention (>85% at 60° per ASTM D523) and scrub resistance (>20,000 cycles, ASTM D2486). Designed for interior/exterior wall paints across economy, mid-tier, and luxury segments, BLJ-816 supports high pigment loading (up to 80% PVC) while maintaining low VOC (<50 g/L, EPA Method 24). Its broad compatibility with extenders like calcium carbonate and advanced additives makes it ideal for eco-friendly matte, eggshell, and semi-gloss finishes.
Technical Specifications
Parameter | Specification |
---|---|
Article No. | BLJ-816 |
Appearance | Milky-white liquid |
Solid Content | 48±1% (ISO 3251) |
pH Value | 8.0–9.0 (DIN 53200) |
Viscosity (25°C) | 1,000–3,000 mPa·s (Brookfield RV, spindle 3) |
Glass Transition Temp. (Tg) | 25°C (DSC method) |
MFFT | 10°C (ISO 2115) |
VOC Content | <50 g/L (EPA Method 24) |
Packaging | 50 kg / 1,000 kg PE barrels |
Key Characteristics
1. Unmatched Durability
- Water resistance: 168h immersion without blistering (ASTM D870).
- Alkali/salt resistance: Withstands 5% NaOH/NaCl solution (ISO 2812-2).
- Hydrolysis stability: Maintains viscosity (±10%) after 30d @50°C (ISO 3219).
2. Mechanical Performance
- Scrub resistance:
-
20,000 cycles @1,000g load (ASTM D2486, PVC 45%).
15,000 cycles in high-PVC (60%) flat paints.
-
- Adhesion:
- 5B crosshatch adhesion on concrete/plaster (ASTM D3359).
2.5 MPa pull-off strength on cement boards (ISO 4624).
3. Formulation Flexibility
- Pigment/filler compatibility:
- Inorganics: CaCO₃, kaolin, TiO₂ (up to 80% PVC).
- Organics: Phthalo blue, quinacridone red (no flocculation).
- Additive synergy: Stable with HEC, ASE, and PU thickeners.
4. Environmental Compliance
- Low odor: VOC <50 g/L, meeting China GB 18582-2020.
- APEO-free: Compliant with EU REACH Annex XVII.
- Non-hazardous: OSHA Hazard Communication Standard exempt.
Applications
I. Interior Wall Coatings
Economy Grade
- High-PVC (70–80%) flat paints for cost-sensitive projects.
- Formulation Example:
- 30% BLJ-816, 50% CaCO₃, 15% TiO₂, 5% dispersants.
Mid-Tier Grade
- Washable eggshell finishes (ΔE<1.5 after 5,000 scrubs).
- Antimicrobial coatings (ISO 22196:2011 compliant).
Luxury Grade
- Silk-gloss trims with Persoz hardness >150s.
- Zero-VOC nursery paints (China HJ 2537-2014 certified).
II. Exterior Wall Coatings
Weather-Resistant Finishes
- 10-year chalk resistance (ASTM D4214 Rating 10).
- Dirt pickup resistance (DPUR <20 per AAMA 615-2021).
Elastomeric Systems
- 300% elongation for crack bridging (ASTM C836).
- Solar-reflective "cool wall" coatings (SRI >82).
Texture Coatings
- Sand/quartz-filled renders with spatter resistance.
- Granite-like finishes using 40–60 mesh aggregates.
Formulation Guidelines
1. High-Gloss Trim Paint
Component | Weight % | Function |
---|---|---|
BLJ-816 latex | 55–65% | Film former/gloss enhancer |
TiO₂ (rutile) | 20–25% | Opacity/whiteness |
Propylene glycol | 2–3% | Freeze-thaw stabilizer |
Modified polysiloxane | 0.5–1% | Mar/slip resistance |
AMP-95 | 0.2% | pH adjuster |
2. Exterior Flat Paint
Component | Weight % | Function |
---|---|---|
BLJ-816 latex | 25–30% | Binder/weatherability |
CaCO₃ (3μm) | 40–45% | Extender/cost reducer |
Calcined clay | 10–15% | Sheen control |
HEC (30,000 mPa·s) | 0.4–0.6% | Rheology modifier |
Zn-free fungicide | 0.8–1.2% | Mold resistance |
3. Application Parameters
- Dispersion: 25–30 min @2,000 rpm (dissolver disc).
- PVC Range: 35–80% (adjust extender ratio).
- Drying: 30min dust-free @25°C/50% RH.
Packaging & Storage
1. Packaging Options
- Retail: 50 kg polyethylene barrels with tamper-proof lids.
- Bulk: 1,000 kg reusable IBC totes (UN-certified).
2. Storage Conditions
- Temperature: 5–35°C (41–95°F).
- Critical Notes:
- Freezing: Below 0°C causes irreversible coagulation.
- High Temp: Above 35°C risks skin formation; avoid stacking >3 layers.
- Critical Notes:
- Environment:
- Ventilated warehouse (<70% humidity).
- No direct sunlight (UV degrades emulsion).
- Shelf Life: 6 months in unopened containers. Post-opening, use within 30d.
Quality Compliance
- Certifications: China Environmental Labeling (Type I), ISO 9001:2015.
- Batch Testing:
- pH tolerance ±0.3.
- Viscosity variation ±10%.
- Safety Data: Non-flammable (Flash point >100°C), pH 8–9 (non-corrosive).
Environmental Advantages
- Low Carbon Footprint: 30% reduced energy vs. solvent-borne alternatives.
- Renewable Sourcing: 15% bio-based raw materials (mass balance approach).
- Recyclability: Empty barrels accepted for industrial recycling.
Technical Support
- Lab Services: PVC optimization, scrub resistance testing.
- Troubleshooting: Prevent coagulation in high-CaCO₃ formulations.
Conclusion
Styrene Acrylic Latex BLJ-816 redefines value in architectural coatings, offering formulators a versatile platform to balance cost, aesthetics, and durability. Its robust resistance to water, alkalis, and scrubbing ensures long-term performance across diverse climatic conditions, while low-VOC credentials align with global sustainability mandates. From budget-friendly flat paints to luxury high-gloss finishes, BLJ-816 empowers manufacturers to meet evolving market demands without compromising quality. Backed by Shanghai’s advanced polymerization expertise and strict QC protocols, this latex sets a new benchmark for eco-conscious, high-performance coatings.


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