Product Description
The nonionic water-soluble cellulose ether KIMACELL®Brand HPMC Hydroxypropyl Methyl Cellulose is made from the naturally occurring substance cellulose (wood pulp and cotton linter). In order to create an alkali cellulose, the cellulose is treated with a caustic soda aqueous solution. This alkali cellulose is then treated with etherification agents such methyl chloride, propylene oxide, or ethylene oxide to generate KIMACELL®. Despite having numerous hydrophilic hydroxyl groups, cellulose does not dissolve in water. This is due to the fact that hydroxyl groups are forming crystal structures and strong intermolecular hydrogen bonds, which stop water from dripping into the space between cellulose molecules.
Item | Index | ||||
MC | HPMC | ||||
A | F | E | J | K | |
Methoxy content % | 27.5-31.5 | 27.0-30.0 | 28.0-30.0 | 16.0-20.0 | 19.0-24.0 |
Hydroxpropyl content % | / | 4.0-7.5 | 7.5-12.0 | 23.0-32.0 | 4.0-12.0 |
Loss on drying % | 5.0 Max | ||||
PH value | 5.0-7.0 | ||||
Appearance | White to yellowish grains or powder | ||||
Viscosity (mPa.s) | Refer to Table 2 | ||||
Gel temperature (℃) | 65 | 60 | 75 | ||
According to the type of substituent groups added to the cellulose molecules, as well as the DS and molar substitution, different types of KIMACELL® are categorized as shown below.
Standard molar and degree of substitution for KIMACELL® products
Level of replacement The typical quantity of methoxy groups affixing to cellulose's anhydroglucose unit
Molar replacement The usual proportion of hydroxylpropoxy or hydroxylethoxy groups in cellulose per mole of anhydroglucose unit
KIMACELL® with a little glyoxal surface treatment. Even when added to cold water, this product can quickly become wet and disperse without forming lumps. It can then dissolve with continued agitation. Alkaline ingredients will hasten the dissolving process when added to the dispersion.
Statistical Index
Characteristics
1. Almost tasteless and odorless
2. A low amount of ash
Brand HPMC Hydroxypropyl Methyl Cellulose can be thoroughly purified during manufacturing by hot-water washing, which results in a very low ash percentage.
3. Cold water solubility and thickening capacity
It can dissolve in cold water and turn into a clear, viscous solution.
4.When heated to a specific temperature, an aqueous solution of KIMACELL® will precipitate or gel, but upon further cooling, it will return to its original solution state.
5. A refusal to salt out
PH Stability
6.Acid and alkali have very little effect on the viscosity of an aqueous solution of KIMACELL®, and the product can develop its original viscosity in the pH range of 3.0 to 11.0.
7. Organic solvent solubility
Because its methyl and hydroxypropyl groups are rather hydrophobic, KIMACELL® can dissolve in various organic solvents as well as water-organic solvent mixtures.
Surface motion 8.
9. Film development
A strong, flexible, and clear film with good oil and grease barrier properties is offered by KIMACELL®.
10. Retention of water
11. Shape maintenance
12. Stickiness