Landu Novastar™
Construction Additive
High‑Value Economy Grade for Cost‑Optimized Mortar and EIFS Formulations
Key Features
Low Ash Content ≤ 8 %
Cost‑Effective Polymer Solution for Construction Mortars
Wide Application Range from Putty to Bonding Mortars
Reliable and Uniform Performance
Economy‑Grade Hydroxypropyl Starch Ether Additive for Gypsum, Plaster & EIFS Applications
Landu Novastar™ ST3547 Hydroxypropyl Starch Ether is formulated to deliver excellent value in construction materials without compromising on technical performance.
Developed through advanced plant‑source modification and etherification processes, ST3547 offers perfect balance between purity, workability and cost efficiency.
It ensures consistent water retention, smooth application and broad compatibility across multiple mortar systems including putty, plastering, bonding mortars and EIFS.
| Property | Specification |
|---|---|
| Appearance | White fine powder |
| Viscosity (5% solution) | 200 – 1500 mPa·s |
| pH (1% solution) | 4.0 – 8.5 |
| Loss on Ignition | ≤ 8.0 % |
| Moisture Content | ≤ 10 % |
| Particle Size | ≥ 98% pass 100 mesh |
| Bulk Density | 500 – 900 g/L |
| CAS Number | 9049‑76‑7 |
Delivers smooth troweling, reduced cracking and uniform surface finish at minimal cost.
Offers excellent adhesion and application ease for manual systems.
Ensures strong adhesion and open time for EPS/XPS board installation.
Enhances adhesive and base layer durability with cost‑efficiency.
| Product | Viscosity (mPa·s) | Ash Content | Recommended Use |
|---|---|---|---|
|
ST3547
Featured
|
200 – 1500 | ≤ 8 % | Economy applications, wide compatibility |
| ST1506A | 500 – 3500 | ≤ 12 % | Universal grade for multi-use systems |
| ST1403B | 500 – 1000 | ≤ 12 % | Basic gypsum and putty uses |
| ST3411A | 100 – 1000 | ≤ 8 % | Premium C2 tile adhesive systems |
Less need for additional correction agents in formulation.
Overall cost control in mortar design without compromise.
Reduced application time and labour on every project.
Simplified inventory and procurement across product lines.
Fewer adjustments and less waste batch after batch.
Specialists assist you with formulation optimization, cost analysis and performance testing — tailored to your exact mortar system.
ST3547 offers competitive pricing while maintaining reliable performance. It's optimized for cost-conscious formulations without sacrificing essential quality requirements.
Low ash content (≤8%) means higher purity, which reduces potential interference with formulation chemistry, minimizes discoloration risk, and can improve overall product quality.
Typically 0.1–0.3% by weight of dry mix. The exact dosage depends on your specific formulation and performance requirements. Contact our technical team for customized recommendations.
In many applications, yes. ST3547 provides excellent value for standard performance requirements. Our technical team can help evaluate compatibility with your specific formulation.
Yes, ST3547 is suitable for both interior and exterior applications including exterior putty, plastering, and EIFS systems.
ST3547 has lower ash content (≤8% vs. ≤12%) and a different viscosity range (200–1500 vs. 500–3500 mPa·s), making it ideal for lower-ash, cost-optimized applications.
Yes, we provide samples for qualified customers. Please contact our sales team with your company information and application details.
12 months from production date when stored properly in original unopened packaging in dry, well-ventilated conditions.
Optimize Your Construction Formulations
with Landu Novastar™
ST3547 Hydroxypropyl Starch Ether
Contact Landu today for samples, technical consultation, and cost evaluation to see how ST3547 can enhance your mortar performance — from workability and water retention to long-term durability and cost efficiency.
