Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- CASE Ingredients Functions
- Technologies
- Product Families
Features & Benefits
- CASE Ingredients Features
Applications & Uses
- Applications
- Compatible Substrates & Surfaces
Properties
- Color
- Appearance
- Red powder
- Typical Properties
| Value | Units | Test Method / Conditions | |
| Relative color strength( Compared with the standard) | min. 98 | % | - |
| Volatile matter (105°C ) | max. 3.0 | % | - |
| Water soluble matter | max. 0.5 | % | - |
| Residue (on 325 mesh sieve) | max. 0.1 | % | - |
| PH of water suspension | 7.0 | - | - |
| Oil absorption | 35-45 | g/100g | - |
| Total iron-oxide | 85-95 | % | - |
| Heat resistance | 500.0 | ℃ | - |
| Light resistance | 8.0 | grade | - |
| Acid resistance | 5.0 | grade | - |
| Alkali resistance | 5.0 | grade | - |
Technical Details & Test Data
- Dispersion Methods
In order to fully exhibit the high transparency and color strength, the Trans-oxide pigments must be dispersed completely. The forces of attraction between particles of small size are high and aggregates formed between the particles are difficult to fully disperse. Ideal dispersion depends on the manufacturing process and the dispersing equipment.
The first stage of a dispersion is to choose proper binders and dispersants to wet the pigment surface and make it to be pre-dispersion system by mechanical equipment and then choose proper milling equipment.
For relatively low viscosity systems, a horizontal bead mill containing glass beads or zirconia beads media is preferred, although ball mills may also be used. Where viscous systems are required, for example pastes or concentrates at high pigment loading, then a three roller mill may be required.
The dispersibility of odorless series umber pigments is better than that of Trans-oxide pigments, which can be dispersed by ball mill, basket type sand mill, three roller mill or horizontal bead mill.
After full dispersion, with the needle lengths of the particles less than 5 µm, the excellent properties of Trans-oxide pigments will be fully exhibited.