Organophilic Bentonite Rheological Additive BT-881

BT-881 is an organophilic (organically modified) bentonite rheological additive supplied as a light yellow free-flowing powder. It is specifically designed for mineral oil-based systems and provides excellent suspension, thixotropy, and stability performance in oilbased formulations.

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Specifications

Appearance: Light yellow free-flowing powder
Particle size (<76μm or 200 mesh): ≥95%
Volatiles (105°C, 2h): ≤3.5%
Colloidal yield (ml/2g): ≥95%

Features & Applications
Organophilic Bentonite Rheological Additive BT-881 is Light-colored free-flowing powder, suitable for mineral oil solvent systems. Offers excellent suspension, thixotropy, and stability. Requires high-speed dispersion (direct dry powder addition). Widely used in oil drilling and release fluids, providing superior suspension, cuttings transport, wall stabilization, and filtration control, with stable performance under high temperatures.

Packaging & Storage
Double-layer packaging (kraft paper + PE film) or valve paper bags; 25±0.25kg.

Store dry at 0–30°C;

shelf life: 24 months.

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