808 organic bentonite is a dispersible rheological additive from Zhejiang Qinghong New Material Co., Ltd. It helps formulators adjust thickening and flow behavior in solvent-based coatings and printing inks.
The product uses a high-purity organic ammonium montmorillonite. It disperses without a separate pre-gel preparation step. In addition, it can self-activate without an activator in selected solvent systems, giving formulators more flexibility during production.
Easy Dispersion Without Pre-Gel Preparation
808 allows manufacturers to add the rheological additive at different stages of the production process. According to the product document, it does not require pre-gel preparation or grinding.
As a result, formulators can incorporate it into their existing production sequence without a separate pre-gel step.
When fully dispersed, the product has a particle diameter below 30 μm. However, formulators should still check dispersion quality in their own formulation before moving to full-scale production.
Self-Activation in Selected Solvent Systems
808 organic bentonite suits low- to medium-polarity solvent systems and some high-polarity systems. These include formulations containing aliphatic hydrocarbons, esters, and ketones.
In particular, the product document identifies the following systems where 808 can disperse and self-activate without an activator:
- Xylene
- Xylene–ester blends, such as xylene with butyl acetate
- Xylene–ketone blends, such as xylene with cyclohexanone
Therefore, formulators should assess activation requirements according to the actual solvent blend. The self-activating property applies to suitable systems rather than every solvent-based formulation.
Rheology Control for Coatings and Inks
Formulators choose rheological additives according to the required thickening effect, flow behavior, and degree of pigment settling.
808 provides a broad-spectrum organoclay option for these formulation needs. Moreover, its flexible addition process makes it suitable for evaluating different production sequences.
The final dosage depends on the complete formulation. For example, a change in the solvent blend or pigment system may require a different addition level.
Recommended Applications
808 organic bentonite supports several solvent-based applications:
| Application | Recommended use |
|---|---|
| Anti-corrosion coatings | Rheological additive for protective coating formulations |
| Printing inks | Flow and consistency adjustment |
| Marine coatings | Rheology adjustment in boat and marine coating systems |
| Industrial decorative coatings | Thickening and flow control |
| Automotive primers | Rheological adjustment in primer formulations |
| Sealants | Consistency and rheology control |
For each application, evaluate the additive in the intended resin and solvent system. This helps establish a suitable dosage and production process.
Technical Properties of 808 Organic Bentonite
| Property | Specification |
|---|---|
| Composition | Organic ammonium derivative of montmorillonite |
| Appearance | Light white fine powder |
| Moisture content | ≤2.50% |
| Dry powder fineness, passing 250 mesh | ≥99.0% |
| Loss on ignition at 900°C | 38.0–43.0% |
| Typical dosage | 0.5–1.5% of total paint amount |
These specifications describe the additive itself. Finished coating properties depend on the full formulation and processing conditions.
Recommended Dosage and Formulation Trials
The general dosage range for 808 is 0.5–1.5% of the total paint amount.
First, select a trial level based on the target thickening effect and rheological requirements. Then, evaluate dispersion, flow behavior, and pigment settling in the finished formulation.
If you currently use a conventional organoclay, its existing dosage can serve as an initial reference. Afterward, optimize the addition level through formulation trials. The product document notes that 808 typically requires a lower dosage than conventional organoclay, although the actual amount depends on the system.
Also, confirm whether your solvent blend supports self-activation before deciding to omit an activator.
Packaging and Storage
Qinghong supplies 808 in kraft paper bags with an inner PE liner. The standard net weight is 25 ± 0.25 kg per bag. Customized packaging and weights are also available.
Store the product in a cool, dry, and ventilated place. The product document lists a storage life of two years.
Request Technical Information and Samples
For formulators seeking a dispersible rheological additive, 808 organic bentonite offers easy incorporation, no pre-gel requirement, and self-activation in selected solvent systems.
Contact Qinghong to request technical information, samples, and guidance for your formulation. Share your resin type, solvent blend, application, and target rheology so the technical team can better assess your requirements.
Visit Qinghong’s official website to discuss your application.