BK-923 is an organoclay (tetraallkyl ammonium bentonite) for solvent-based systems of low, medium and high polarity.
1. Advantages:
☆ High gelling efficiency over low,medium and high polarity organic liquids.
☆ Easy of incorporation. No need for polar activator or making pregel.
☆ Consistent in rheology and thixotropy development.
☆ Easy of dispersion with excellent fineness.In suitable systems, it can reach 5μ or even less.
☆ Good anti-sagging property and anti-sediment property.
☆ Can be added at any step,even can be used in post-addition to correct the final viscosity of a certain batch.
2. Typical Properties:
| Color |
Appearance |
Density |
Moisture
(@105ºC,2hrs) |
Fineness through 200 mesh |
Loss on Ignition
( @1000ºC ) |
| Light Yellow |
Free Flowing Powder |
1.7g/cm3 |
≤3.5% |
≥99% |
≤38% |
3. Typical Applications:
| Acrylic paint |
Solvent epoxy paint |
| Alkyd paint |
Inks(mineral oil) |
| Anti-corrosion paint |
Inks(Nitro) |
| Bituminous paint |
Adhesive |
| Baking paint |
Putties and sealant |
| Chlorinated rubber paint |
Varnish |
| None solvent epoxy paint |
Nitro lacquer |
| Marine paint |
Lubricating grease |
| Silica paint |
|
4. Incorporations:
BK-923 belongs to the unconventional type of organoclays group, being an easy-to-disperse, self-activated organoclay, BK-923 does not require a chemical (polar) activator to reach the proper level of delamination of the organoclay platelet stacks.
BK-923 can be added at any point in the manufacturing process. If addition is made with polar activator or after grinding, better performance can be expected.
5. Recommended Levels:
The amount of BK-923 rheology modifier required depends upon the type of organic system and the degree of thickening or other properties desired. Addition levels are typically between 0.2%-1.5% based on the total formulation weight.
6. International Countertypes: Bentone®SD-2, Claytone®HY,Claytone®APA
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