Hydroxypropyl Starch (HPS)
1. Chemical name: Hydroxypropyl Starch (HPS)
2. Technical indicators:
Item | Index |
Appearance | White fine powder |
Solubility | Can be dissolved in cold water |
water content(%) | ≤5 |
Hydroxypropyl content(%) | 20-40 |
PH(3.75%，25℃) | alkalinity8.0-11.5 |
Fineness | <350um |
Viscosity(nPas)5%，Aqueous solution at 20 ℃ | 400-1200mPa.s |
Hydroxypropyl Starch (HPS) is a white fine powder obtained from natural plant as raw material, modified by epoxy propane and starch and highly etherized, instead of hydroxyl in starch polymer structure. It is made of etherized starch and spray dried to obtain white fine powder without plasticizer. It is completely different from ordinary starch or modified starch.
3. Application characteristics:
1. Good fast thickening ability; It has certain water retention;
2. Small dosage, very low addition can achieve high effect:
3. Improve the sliding resistance of materials;
4. Improve the handling performance of materials and make the operation more smooth:
5. Extend the opening hours of materials.
Hydroxypropyl starch ether shall be added in the following materials:
1. Various kinds of putty powder for interior and exterior walls (cement, gypsum and lime calcium base);
2. Various (ceramic tile, stone) adhesives;
3. All kinds of facing mortar and all kinds of plastering mortar, especially the external wall insulation mortar.
Recommended addition of starch ether: 0.08% - 015%
4. Main purpose
Construction industry: hydroxypropyl starch ether is widely used in building materials industry. It can be used as retarder, water retaining agent, thickener and binder. Hydroxypropyl Starch (HPS)plays an important role in ordinary dry mixed mortar, high-efficiency external wall insulation mortar, self leveling mortar, dry powder plastering adhesive, ceramic tile bonding dry powder mortar, high-performance building putty, crack resistant internal and external wall putty, waterproof dry mixed mortar, gypsum plaster, scraping and whitening agent, thin-layer joints and other materials, and plays an important role in the water retention, firmness and It has an important impact on retarding and workability.
In addition, HPS can also be used as adhesive, suspending agent and thickener in papermaking, textile, petroleum drilling, daily chemical and other industries.
5. Packaging, storage and transportation
The product is packaged in plastic coated polypropylene woven bags, with a net weight of 25kg per bag; During storage and transportation, it shall be protected from sun, rain and moisture.
HPS is mainly used as thickener in food industry, especially for frozen food and convenience food. It can provide stable viscosity and ensure water retention under low temperature storage conditions. It can also be used with other thickeners.
HPS can also be used as thickener in meat sweat, sausage, fruit beverage and pudding. It can also provide a fine, thick, clear and particle free structure, and maintain this structure at various storage temperatures, including frozen state, without any other miscellaneous flavor.
HPS can also be used as the base material of chewing gum, which has good elasticity and chewability.
IUPAC
5-[6-[[3,4-dihydroxy-6-(hydroxymethyl)-5-methoxyoxan-2-yl]oxymethyl]-5-[3-(2,3-dihydroxy-2-methylpropoxy)-4-hydroxy-6-(hydroxymethyl)-5-methoxyoxan-2-yl]oxy-3,4-dihydroxyoxan-2-yl]oxy-6-(hydroxymethyl)-2-methyloxane-3,4-diol
SMILES
CC1C(C(C(C(O1)CO)OC2C(C(C(C(O2)COC3C(C(C(C(O3)CO)OC)O)O)OC4C(C(C(C(O4)CO)OC)O)OCC(C)(CO)O)O)O)O)O
Jiangsu, China
