Hydroxypropyl Starch Ether (HPS) | Premium Modified Starch Polymer HPS Powder Supplier
Hydroxypropyl Starch Ether (HPS) is a non-ionic modified starch ether derived from natural plant starch through etherification. It is widely used as a rheology modifier, thickener, and water retention agent in construction materials.
HPS Powder significantly enhances workability, anti-sagging performance, and open time in cement-based and gypsum-based systems.
With excellent compatibility with cellulose ethers such as HPMC, HPS is an essential additive in modern dry-mix mortar formulations.
Key Features of Hydroxypropyl Starch Ether
Water Retention: Excellent (high water-holding capacity)
Thickening: Fast, medium-to-high viscosity development
Anti-sagging / Anti-slip: Strong improvement for mortars/putty
Workability: Enhances lubricity, smoothness, and construction ease
Compatibility: Good with HPMC, CMC, RDP, cement/gypsum additives
Stability: Stable to acids, alkalis, salts; freeze-thaw stable
Biodegradable: Readily biodegradable
Film-forming: Good film strength and clarity
Specification:
| Hydroxypropyl Starch Ether (HPS) | |
| Item | Standard |
| Appearance | White to off-white Powder |
| Moisture, % | ≤ 10 |
| pH value | 7.0-9.0 (5% solution) |
| Viscosity | 500-1200mPa.s (5% solution) |
| Solubility | Soluble in water |
| Compatibility | Good compatibility with other building materials admixtures |
