Hydroxypropyl starch ether (HPS)
1. Product overview
Hydroxypropyl starch ether 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 phosphorous flake or white powder, soluble in cold water to form a transparent or translucent viscous liquid. It has the properties of thickening, binding, dispersing, emulsifying, suspending, adsorbing, surface active, and retaining moisture.
2. Technical requirements
| Indicator name | Indicator | ||
| 301 | 601 | 201 | |
| Viscosity (2% in water) mPa.s | 800-1200 | 2000-4000 | ≥4000 |
| pH value | 8-11 (1% aqueous solution) | ||
| fineness | Less than 80 | ||
| Solubility | soluble in cold water | ||
3. Physical properties of the product:
Hydroxypropyl starch has a white appearance, good fluidity of hydroxypropyl starch, good water solubility of hydroxypropyl starch, transparent and colorless aqueous solution of hydroxypropyl starch, and good stability of hydroxypropyl starch.
Fourth, the application of hydroxypropyl starch:
On building materials, it mainly resists sagging, improves construction, prolongs cement opening time and thickens. According to the different product performance requirements of internal and external wall putty, bonding and grinding mortar, basic particles and vitrified microbeads, our factory has refined and classified the products.
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