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| Packing: | Double bag, outer composite paper bag, inner polyethylene film bag, each bag net weight of 25 kg, can be customized. |
| Storage and shelf life: | In original packaging with a far high heat source, store under cool, dry conditions. It is recommended that this product be used on a first-in, first-out basis in rotation and can be stored for several years in an unopened bag. In an open bag, the moisture content of the product is affected by the humidity of the air. |
Basic information
Hydroxyethyl methyl cellulose (HEMC), also known as methyl hydroxyethyl cellulose (MHEC), is a non-ionic cellulose ether, white or light yellow, odorless, non-toxic fibrous or powdered solid, it is made from natural polymer cellulose through a series of etherification reactions. Hydroxyethyl methyl cellulose (HEMC) has excellent water solubility, water retention, surface activity, thickening, film formation, adhesion, suspension, high temperature resistance...
Physical and chemical properties
Structural formula
C2H6O2·xCH4O molecular formula
CAS NO: 9032-42-2
Appearance: HEMC is white or white fibrous or granular powder; No odor.
Granularity: the passing rate is 99% for 40 mesh and 100% for 80 mesh.
Apparent density: 0.30-0.60g/m3
HEMC has the characteristics of thickening, suspension, dispersion, adhesion, emulsification, film formation, water retention, etc.
Technical index
| Methoxy content（%） | 22.0-32.0 |
| Hydroxypropyl content（%） | 4-12 |
| Gelation temperature（℃） | 70-90 |
| Water content（﹪） | ≤ 5.0 |
| Ash content（WT%） | ≤ 3.0 |
| Etherification (MS/DS) | 0.8-1.2/1.8-2.0 |
| Residue on ignition（WT%） | ≤ 5.0 |
| PH value | 4.0－8.0 |
| Viscosity（mpa.s）2% 25℃ | 5-200000 |
Type and viscosity
| Type | Viscosity range | Liquor | Test temperature |
| Edge-4000 | 3500-5600 | 2% | 20℃ |
| Edge-12000 | 10000-14000 | 2% | 20℃ |
| Edge-20000 | 18000-22000 | 2% | 20℃ |
| Edge-40000 | 35000-55000 | 2% | 20℃ |
| Edge-75000 | 70000-85000 | 2% | 20℃ |
| Edge-100000 | 90000-120000 | 2% | 20℃ |
| Edge-150000 | 130000-180000 | 2% | 20℃ |
| Edge-200000 | 180000-230000 | 2% | 20℃ |
Main uses
Building materials industry: as a water-retaining agent and retarding agent of cement mortar, mortar has pumpability. Apply mortar, plaster, putty powder or other building materials as adhesives to improve spreadability and extend operating time. Used to paste ceramic tile, marble, plastic decoration, paste enhancer, can also reduce the amount of cement. HPMC water retention performance makes the paste after application will not dry too fast and crack, enhance the strength after hardening.
Daily chemical washing industry: Daily chemical products can play a good thickening effect and good transparency. It can also play a certain role in stabilizing and dispersing materials
Ceramics industry: Widely used as adhesives in the manufacture of ceramic products.
Coating industry: As a thickener, dispersant and stabilizer in the coating industry, it has a good compatibility in water or organic solvents. As a paint stripper.
Ink printing industry: as a thickener, dispersant and stabilizer in the ink industry, it has a good compatibility in water or organic solvents.
Plastics industry: for forming release agent, softener, lubricant, etc.
Polyvinyl chloride: as a dispersant in the production of polyvinyl chloride, it is the main auxiliary agent for the preparation of PVC by suspension polymerization.
Others: This product is also widely used in leather, paper products industry, fruit and vegetable preservation and textile industry.
Advantage
High thickening
Excellent dispersion
Excellent solubility
Excellent gentleness
High temperature stability
Excellent rheological properties
Product feature
HEMC is soluble in water and has a wide range of solubility and viscosity properties
Salt resistance: The product is non-ionic cellulose ether, which is relatively stable in aqueous solution.
High temperature resistance, usually keep working below 90℃.
Good water retention ability, is a kind of efficient water retention agent;
Mold resistance: It has good mold resistance and good viscosity stability in long-term storage.
Thickener, film forming agent, adhesive, lubricant, suspension aid, protective colloid, emulsifier, etc
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peter@hpmc-hec.com
