Organoclay Rheological Additive(BP-183B)

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Organoclay Rheological Additive(BP-183B)
Posting date : Sep 13, 2007
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29-
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BP-183B is an organo clay (modified bentonite), designed especially for use in solvent based system. It can be used widely in solvents from low polarity to medium-high polarity. Advantages 1 High gelling efficiency. 2. Wide application range, it can be applied in all low, middle and high polarity range. 3. Produce reproducible thixotropic consistency over a wide temperature range 4. Imparts particle suspension, preventing hard settling of pigment and fillers. 5. Exerts strong film reinforcing action in organic binder systems. Typical properties Composition Organic derivative of a montmorillonite clay Appearance Fine white powder Moisture content(105℃,2hr) ≤3.5% Loss on ignition, %(1000℃) 28-30% Bulk density 0.53g/cm3 Fineness (200 mesh) ≥98% Application 1 Marine paint, Industrial paint, heavy-duty, anticorrosion paint such as bituminous coatings, epoxy paints, chlorinated rubber paints. 2 Inks. 3 Grease. 4 Sealant. 5 Unsaturated polyester putty. Using BP-183B disperses under high shear and requires a polar activator for best efficiency. Heat is not required to obtain good dispersion. Addition levels are typically in 0.2%~2.0%. Polar activator (95% Ethanol or 95% Methanol) is needed. Normally addition level of polar activator is recommended to be 45%~60% of BP-183B in weight. If in xylene system, addition level of polar activator is about 30%-40% of BP-183B in weight. Pre-gel is made as below procedure. 1. Charge solvent to mill 2. Slowly add BP-183B (6-10% by weight of total pregel) to mill under agitation. 3. Mix at high speed for 5 minutes. 4. Add polar activator. 5. Mix at high speed for 5 minutes.

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