HPMC, HEC, Hemc for Construction Cement, Coating
| Hydroxyethyl cellulose HEC | |||
| Item | Index | ||
| Appearance | White or light yelow powder | ||
| Odour intensity | Odorless or slight smell | ||
| Molar degree of substitution types | 180 | 250 | 300 |
| Molar degree of substitution | 1.50~2.10 | 2.20~2.80 | 2.90~3.20 |
| Ash (calculate as NaSO4) | <10%(qualified grade) | <5%(premium grade) | <5%(premium grade) |
| Moisture content | <5% | ||
| PH Value (1% solution) | 6.0~8.5 | ||
| Viscosity | As the following viscosity table | ||
Viscosity Table
| Name | Viscosity name | Viscosity range by LVF Brookfield,1% solution, mPa.s | Viscosity range by LVF Brookfield, 2% solution, mPa.s |
| HEC 300 | 300 | / | 50 ~ 400 |
| HEC 2000 | 2 000 | / | 1 500 ~ 2 500 |
| HEC 6000 | 6 000 | / | 4 500 ~ 6 500 |
| HEC 10MS | 10 000 | / | 6 500 ~ 12 000 |
| HEC 15MS | 15 000 | 1 000 ~ 1 400 | 12 000 ~ 20 000 |
| HEC 30MS | 30 000 | 1 500 ~ 2 400 | 26 000 ~ 45 000 |
| HEC 50MS | 50 000 | 2 400 ~ 2 600 | 45 000 ~ 60 000 |
| HEC 70MS | 70 000 | 2 600 ~ 3 300 | 60 000 ~ 80 000 |
| HEC 100MS | 100 000 | 3 400 ~ 6 000 | 85 000 ~ 110 000 |
Application:
HEC is mainly used as adhesive protective gelatin, thicker agent and stabilizing agent as well as additives to make emulsion, frozen gelatin, lotion, eye clear agent, suppository and tablets. HEC is also used for hydrophilic colloid, framework. Material, ready-made framework controlled release agent, and stabilizing agent in foodstuff.
It is also used in paint and coatings,oil feild and cosmetic.
| Application Fields | Application Range | Function |
| Painting | Latex paint, polymer emulsifying | Thickening |
| Construction | Cement, mortar | Thickening, water-retaining, retarding |
| Cosmetics | Toothpaste, shampoo, Cream | Thickening, stabilizing |
| CeramicsCeramics | Enameling | Water-retaining |
| Paper-makingPaper-making | Sizing | Thickening, water- retaining |
| Pharmaceutical | Lotion, Ointment | Thickening |
Important characteristics:
As a non ionic surface-active agent, it possesses the following characteristics in addition to acts of thicker agent, suspending agent, adhesive agent, emulsification agent, coating agent, water keeping agent and protective agent.
1. HEC can dissolve in both cool and hot water while it does not deposit when in hot or boiling water showing large range of non-gelatin capacity.
2. Because of non-ionic base, it can be coexist with other water-soluble polymizers, surface-active agent and salts.
3. Water keeping ability is twice that of Methyl Cellulose (MC)showing good flowage adjusting ability.
4.It is stable in viscosity and anti-mildew and makes coatings good open can effect ion as well as excellent floating-plain effects.
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