Hydroxypropyl Starch Ether HPS Factory and Suppliers in China
Hydroxypropyl Starch Ether (HPS) is a high-performance chemical additive appearing as a white, colorless powder. Engineered for superior fluidity and water solubility, HPS forms a transparent, colorless aqueous solution with exceptional stability. It is specifically designed to remain stable under varying acid and alkali conditions, offering a lower gelling temperature and more consistent viscosity transitions across temperature fluctuations compared to native starch.
Due to its unique etherification process, HPS serves as a versatile thickening, leveling, and stabilizing agent. It maintains its structural integrity even when mixed with salt or sucrose, making it an indispensable component in modern industrial formulations. By optimizing the substitution degree of hydroxypropyl groups, HPS enhances the mechanical properties, adhesion, and overall durability of end-products across the coatings, building materials, and adhesive sectors.
Detailed Parameters
| Appearance | White powder | Moisture | ≦10.0% |
|---|---|---|---|
| pH Value | 9.0-11.0 | Particle Size (80mesh) | ≧95% |
| Wet Sample Viscosity | 400-5000mPa·s | Hydroxypropyl Content | 13.0%-19.0% |
| Ash Content | ≦10.0% | Solubility | Water soluble / Transparent |
| Stability | Acid & Alkali Stable | Gelling Temp | Lower than native starch |
Key Advantages
Chemical Stability
Highly stable against acid and alkali, ensuring consistent performance in harsh chemical environments.
Viscosity Control
More stable hot and cold viscosity transition than native starch for precise application control.
Excellent Clarity
Produces a completely transparent and colorless aqueous solution for high-quality aesthetic finishes.
Superior Leveling
Acts as an effective leveling agent to prevent flow hanging and improve surface smoothness.
Strong Adhesion
Enhances the mechanical bonding and durability of coatings and building material adhesives.
Salt Compatibility
Viscosity remains unaffected when mixed with salt or sucrose, allowing flexible formulation.
Product Gallery
Management Platforms
Raw Material Control
Strict selection of corn or potato starch to ensure base purity and quality.
Etherification Process
Precision dispersion of propylene oxide and NaOH for optimal substitution.
Thermal Regulation
Two-stage low and high temperature reaction cycles for product stability.
Recovery & Drying
Efficient moisture removal process to maintain a moisture content ≦10.0%.
Precision Sieving
Strict 80-mesh sieving to guarantee 95% or higher particle size uniformity.
Storage Standards
Polyethylene-lined multi-layer bags stored in cool, dry, sunlight-free zones.
Investment Return Comparison
| Performance Metric | Native Starch | HPS (Etherified) |
|---|---|---|
| Temperature Stability | Poor (Sensitive) | Excellent (Stable) |
| Solution Clarity | Opaque/Cloudy | Transparent/Clear |
| Acid/Alkali Resistance | Low | High |
| Application Versatility | Limited | Wide (Coatings/Build) |
| Viscosity Consistency | Fluctuates | Highly Consistent |
Frequently Asked Questions
Q: What are the primary applications of Hydroxypropyl Starch Ether in construction?
In building materials, HPS is widely used in tile adhesives, caulking, and putty powder as a thickener and binder to enhance construction performance and mechanical strength.
Q: How does HPS improve architectural coatings?
HPS acts as a thickening and anti-flow hanging agent, significantly improving the leveling, adhesion, and overall durability of furniture and automotive coatings.
Q: Is HPS affected by the addition of salts or sugar?
No, one of the key advantages of HPS is that its viscosity remains stable and is not negatively impacted by mixing with salt or sucrose.
Q: What is the recommended storage condition for HPS?
It should be stored in a cool, dry place away from direct sunlight. Keep the packaging sealed to prevent moisture absorption from the air.
Q: What makes HPS superior to native starch for industrial use?
HPS offers a lower gelling temperature, better stability in acid/alkali environments, and a more consistent viscosity transition between hot and cold states.
Q: Can HPS be used in the adhesive and sealant industry?
Yes, it is frequently used in inks, adhesives, and sealants as a stabilizer and thickener to improve product quality and consistency.
Ready to Optimize Your Product Performance with HPS?
Contact UsWrite your message here and send it to us
