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Hydroxypropyl Starch Ethers HPS

Hydroxypropyl Starch Ethers HPS for Bond Mortar Admixtures
HPS (Construction Grade) can improve the performance of dry mortar based on cement and gypsum, such as the workability, slip resistance and thickening.
  • HPS
  • PTMA
  • 3505100000

Hydroxypropyl Starch Ethers HPS for Bond Mortar Admixtures


HPS Overview
Hydroxypropyl starch ether  HPS is an ionic starch ether produced by a series of chemical and physical reactions under alkaline conditions using natural polymer material-starch as raw material. Hydroxypropyl starch ether is a non-toxic, odorless, irregular phosphor or white powder that can be dissolved in cold water to form a transparent or translucent viscous liquid. It has the properties of thickening, bonding, dispersing, emulsifying, suspending, adsorbing, surface active, and retaining moisture.

Starch ether HPS is a chemically modified starch ether that is soluble in water and can be used with dry powder mortar
Widely used in tile adhesives, repair mortar, plaster plaster, internal and external wall putty, gypsum-based caulking and filling materials, interface agents, masonry mortar.

The main characteristics of starch ether are: (1) Improve sag resistance; (2) Improve workability.


AppearanceWhite or yellowish powder
SolubilitySoluble in cold water
Moisture Content≤ 5%
Ph (1% water solution, at 25℃)8-11.5
Viscosity, mPa.s( 5% water solution)400~1800
Particle Size, mesh100mesh, >99%
Bulk Density, kg/m3400-500


①cement or gypsum based interior / exterior wall skim coat ② adhesive for tile or stocks ③ finishing mortar, plaster mortar, ETIFS. The dosage of HPS is about 1-2 kg/ton, based on the original formula, reduce the HPMC dosage about 1-2 kg/ton(save cost about 10%-20%).


N.W.: 25±0.25kg / bag; Inner: PE plastic film bag, Outer: PP woven bag;


Interior/ Exterior Wall Skim Coat (Wall Putty, Lacquer Putty)Thixotropy
Adhesive MortarGood Fluidity, Viscosity Stability
Gypsum PlasterRheology
Joint FillerSag Resistance, Viscosity Stability
ETIFSViscosity Stability

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