BK ® -883 is an organoclay (tetraallkyl ammonium bentonite) for solvent-based systems of low to medium polarity.
1. Advantages:
¡î High gelling efficiency over low to medium polarity organic liquids, especially in aromatic compounds. ¡î Ideal thixotropy property and anti-sediment property. ¡î High viscosity and excellent thickening property over a wide temperature range. ¡î Imparts particle suspension, preventing hard settling of pigment and fillers. ¡î Exerts strong film reinforce action in organic binder systems.
2. Typical Properties:
Color
Appearance
Density
Moisture (@105¡æ,2hrs)
Fineness through 200 mesh
Loss on Ignition ( @1000¡æ )
Light Yellow
Free Flowing Powder
1.7g/cm3
≤3.5%
≥98%
≤35%
3. Typical Applications:
¡ñAcrylic paint
¡ñRoad paint
¡ñAlkyd paint
¡ñInks(mineral oil)
¡ñAnti-corrosion paint
¡ñInks(Nitro)
¡ñBaking paint
¡ñAdhesive
¡ñBituminous paint
¡ñPutties and sealant
¡ñChlorinated rubber paint
¡ñLubricating grease
¡ñPolyester paint
¡ñCosmetics
¡ñPrimer paint
¡ñWaster water treatment
4. Incorportions:
BK&®-883 belongs to the conventional type of organoclay group, which requires mechanical energy, shear forces applied with a goods dispersion equipment, and a chemical (polar) activator to reach the proper level of delamination of the organoclay platelet stacks. Polar Activator: Dosage of polar activator ( such as propylene carbonate, 95%ethanol , acetone or 95% methanol) is 40%-60% by weight of BK®-883. It is always recommended to determine the proper level of addition by experiment. Either defect or excess of chemical activator would result in poorer viscosity development.
5. Recommended Levels:
The amount of BK®-883 rheological additive required depends upon the type of organic system and the degree of thickening or other properties desired. Addition levels are typically between 0.2%-2.0% based on the total formulation weight.
6. International Countertypes: Bentone®34£¬Claytone®40