Organic bentonite rheological additive SD340A
GENERAL INFORMATION
SD340A is an organic derivative of a bentonite clay. This rheological additive is designed for low to intermediate polarity organic system, such as mineral oil, paraffin oil, toluene, xylene, 200# solvent oil.
APPLICATIONS
SD340A organic bentonite used as thickener, anti-settling agent and rheological agent widely employ in the field of mixed paint, floor paint, putty, marine paint, primer paint, anti-corrosion paint, adhesive glue, seal gum, printing ink, grease and so on.
INSTRUCTIONS FOR USE
SD340A is added and dispersed in the solvent under high shear, a chemical activator can then be introduced to optimize gelation. For incorporation in the full formulation the pregel is added to the resin/solvent mixture with stirring. Pigments and fillers are then incorporated and dispersed under high shear. The chemical activators can be methanol/H2O（95/5）, ethanol/H2O（95/5）, propylene carbonate,
or acetone. The level of activator depends on the system in which organic bentonite is to be used; the typical levels are between 30 and 50% based on organic bentonite weight.
LEVELS OF USE
The level depends on the system in which is to be used. The typical levels are between 0.5 and 2.0%SD340A organic bentonite based on total system weight.
THE MAIN PRODUCT QUALITY INDEX
|
Composition |
Organic derivative of a bentonite clay |
|
Appearance |
Light cream，finely divided powder |
|
DENSITY，g/cm 3 |
1.75 |
|
Moisture content (%) |
≤3.50 |
|
FINENESS（-200mesh） |
≥95.0 |
|
Bulk density，kg/m 3 |
≤440 |
|
Loss on ignition (900℃,%) |
28.0-32.0 |
Storage and package:
Leather bags are used for the outer package, and the bag uses the double layer packing of thepolyethylene film, or the paper bag. The weight is usually 25±0.25kg, or according to the user packing demands. Keep in dry places. When the temperature is 0~30℃, the quality is valid for 24 months.Introduction:
