Hydroxypropyl Starch Ether HPS China Factory and Reliable Suppliers
Hydroxypropyl Starch Ether (HPS) is a high-performance chemical additive appearing as a white, colorless powder characterized by exceptional fluidity and superior water solubility. Engineered for stability, its aqueous solution is completely transparent and remains stable under various acidic and alkaline conditions, making it an indispensable component for modern industrial formulations.
Unlike native starch, HPS exhibits a significantly lower gelling temperature and maintains a more consistent viscosity across varying thermal environments. Its unique chemical structure ensures that mixing with salt or sucrose does not affect its viscosity, providing manufacturers with a reliable and versatile thickening agent that enhances the clarity and stability of final products.
Detailed Parameters
| Appearance | White powder | Moisture | ≦10.0% |
|---|---|---|---|
| pH Value | 9.0-11.0 | Particle Size | ≧95% (Through 80 mesh) |
| Wet Viscosity | 400-5000mPa·s | Hydroxypropyl Content | 13.0%-19.0% |
| Ash Content | ≦10.0% | Solubility | Highly soluble in water |
| Color | Colorless/Transparent solution | Chemical Stability | Stable to acid and alkali |
Key Advantages
Chemical Stability
Maintains exceptional performance and stability even when exposed to acidic or alkaline environments.
Thermal Consistency
Lower gelling temperature and more stable viscosity transitions between hot and cold states than native starch.
Superior Clarity
Produces completely transparent, colorless aqueous solutions, improving the aesthetic quality of coatings.
Enhanced Adhesion
Optimizes the mechanical properties and durability of architectural and automotive coatings.
Precision Leveling
Acts as an efficient leveling agent and anti-flow hanging additive to improve construction performance.
Broad Compatibility
Viscosity remains unaffected by the presence of salts or sucrose, allowing for flexible formulation.
Product Gallery
Management Platforms
Raw Material Control
Strict selection of high-quality corn or potato starch to ensure base purity.
Etherification Process
Precise dispersion of propylene oxide and sodium hydroxide in water medium.
Low-Temp Reaction
Controlled low-temperature phase to ensure smooth chemical reaction progress.
High-Temp Completion
Advanced thermal processing to complete the etherification for optimal substitution.
Drying & Recovery
Efficient moisture removal and recovery operations to meet strict moisture specs.
Precision Sieving
Final 80-mesh sieving to guarantee uniform particle size and high fluidity.
Investment Return Comparison
| Performance Metric | Native Starch | HPS (Our Product) |
|---|---|---|
| Viscosity Stability | Poor (Temp sensitive) | Excellent (Stable) |
| Water Solubility | Limited / Gels | High / Transparent |
| pH Resistance | Low | High (Acid/Alkali stable) |
| Construction Feel | Basic | Premium (Anti-sagging) |
| Application Versatility | Limited | Wide (Coatings, Building, Ink) |
Frequently Asked Questions
Q: What are the primary applications of HPS in the building materials industry?
In building materials, HPS is widely used in tile adhesives, caulking, and putty powder as a thickener, binder, and leveling agent to improve mechanical properties and construction performance.
Q: How does HPS differ from native starch in terms of temperature?
HPS has a lower gelling temperature and exhibits much more stable viscosity transitions under both hot and cold conditions compared to native starch.
Q: Does the addition of salt or sugar affect the viscosity of HPS?
No, one of the key advantages of Hydroxypropyl Starch Ether is that mixing it with salt, sucrose, or similar additives has no negative effect on its viscosity.
Q: Which coatings can be improved using HPS?
It is primarily used in architectural coatings, furniture coatings, and automotive coatings to enhance adhesion, durability, and anti-flow hanging properties.
Q: How should HPS be stored to ensure a long shelf life?
Store in a cool, dry place away from sunlight and avoid storage under pressure. Unopened packaging can last for several years; once open, protect it from humidity.
Q: What is the typical packaging for commercial HPS orders?
The product is typically packed in multi-layer paper bags lined with a polyethylene layer, with a standard net weight of 25KG per bag.
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