Organoclay (Bentonite) Premium Rheology Modifier for Coatings & Paint Systems
Industry-leading organoclay products engineered for solvent-based and water-based coating formulations. Delivers superior anti-settling, anti-sagging, and thixotropic thickening performance across all major paint systems.
Four Core Practical Functions
What customers care about most -- proven performance in real-world coating production environments.
Powerful Anti-Settling Performance
Eliminates hard sediment at the tank bottom. An essential additive for epoxy zinc-rich coatings, iron red anti-rust paints, heavy-duty anticorrosive coatings, and metallic pigment paints.
- ✓ Pigments and fillers will not cake after 6 months of storage
- ✓ System restores uniformity with gentle stirring
- ✓ No hardened bottom sediment that cannot be broken up
Anti-Sagging for Thick Film Application
Thick coatings applied by spraying or brushing will not run down vertically. Thicker films can be formed in one coat to reduce construction passes.
- ✓ Prevents sagging on vertical surfaces
- ✓ Fewer application passes needed
- ✓ Moderate levelling -- no obvious brush marks
Thixotropic Thickening & Workability
The system turns viscous at rest to lock fillers inside, then instantly becomes thin under shear force for uniform atomization during spraying.
- ✓ Viscous at rest -- locks fillers in suspension
- ✓ Thin under shear -- uniform spray atomization
- ✓ Rapid viscosity recovery after shear stops
Auxiliary Film Property Improvement
Reduces penetration of coatings into wood and steel substrates to save raw material consumption. Lamellar structure enhances anticorrosive barrier performance.
- ✓ Reduces substrate penetration -- saves raw materials
- ✓ Lamellar structure enhances anticorrosive barrier
- ✓ Does not impair adhesion of primer coats
Selection Guide by Coating System
Match the right organoclay grade directly to your paint type for optimal performance.
Low-Polarity Systems
Aliphatic SolventsTypical Solvents
No.200 solvent naphtha, white oil, aliphatic hydrocarbons, bituminous paints, alkyd primers
Recommended Grade
Conventional Activated Organoclay⚠ Activator must be added -- without it, clay cannot swell and delivers zero anti-settling effect.
Applicable Coatings
Medium-Polarity Systems
Aromatic SolventsTypical Solvents
Xylene, trimethylbenzene, aromatic hydrocarbons, wood coatings, epoxy topcoats, industrial enamels
Two Grades Available
Cost-effective, ideal for high-volume primer production
No activator needed -- simplifies manufacturing for clear wood coatings & light-colored topcoats
Applicable Coatings
High-Polarity Systems
Ketone/Ester SolventsTypical Solvents
Ethyl acetate, methyl ethyl ketone (MEK), PMA, polyurethane coatings, automotive refinish paints
Recommended Grade
Self-Activated Easy-Dispersion OnlyNo ethanol/methanol activation needed. Takes effect directly under high-speed dispersion without compromising clear coat transparency.
Applicable Coatings
⚠ Unsuitable Application Scenarios
Organoclay is not recommended for: pure water-based paints, UV varnishes, and high-gloss clear topcoats. It will slightly reduce gloss and create haze in these systems.
Preferred alternative: Polyamide wax is the recommended rheology modifier for water-based, UV-curable, and high-gloss clear systems.
Standard Dosage Guidelines
Weight percentage recommendations based on factory general standards. Dosage varies by coating type and filler loading.
Basic Anti-Settling
Clear coats and light-colored topcoats where only minimal anti-settling is required.
Standard Industrial
Primers, anti-rust paints, and general industrial coatings with moderate filler loading.
Heavy-Duty / High-Build
High-filler zinc-rich paints, high-build anticorrosive coatings, and putty formulations.
Dosage Exceeding 2.0% -- Known Risks
Sharp viscosity rise · Poor spray atomization · Deteriorated film levelling · Obvious brush marks. Do not exceed 2.0% without prior application testing.
Two Standard Manufacturing Processes
Practical step-by-step operating procedures for incorporating organoclay into your coating production.
Pre-Gel Method
Optimal performance -- recommended for heavy-duty anticorrosive & zinc-rich paint manufacturers
Pre-Gel Formulation (Mass Ratio)
Operating Steps
Add solvent at low speed (1,000 RPM), slowly feed organoclay powder, then disperse at high speed (3,000 RPM) for 5-10 minutes.
Add activator and keep high-speed stirring for 10-20 minutes to form a smooth, uniform gel.
Incorporate the finished gel into the resin and filler systems, then conduct standard grinding and paint formulation.
⭐ Best for: Epoxy zinc-rich paints, heavy-duty anticorrosive coatings, high-build marine coatings
Direct Powder Addition
Exclusive for easy-dispersion grades -- streamline production workflow
Key Advantage
No pre-gel preparation required. Eliminates the pre-gel step entirely, reducing production time and simplifying the manufacturing process for medium and high-polarity coating systems.
Operating Steps
Charge resin and mixed solvents into the dispersion tank as the base charge.
Add organoclay slowly under low speed, then stir at high speed for 15-20 minutes until fully dispersed.
Medium & high-polarity systems: No extra activator required.
Pure aliphatic low-polarity systems: Extra activator still necessary.
Add pigments and fillers before grinding and complete standard paint formulation.
⭐ Best for: Wood coatings, PU coatings, automotive refinish, medium-to-high polarity industrial paints
Product Overview & Comparison
Side-by-side comparison of organoclay grades and application suitability.
| Feature | Conventional Activated | Self-Activated Easy-Dispersion |
|---|---|---|
| Activation Required | Yes -- Activator Needed | No -- Direct Use |
| Polarity Range | Low to Medium | Medium to High |
| Cost | More Economical | Premium Grade |
| Clear Coat Compatibility | May Cause Haze | Excellent Clarity |
| Recommended Process | Pre-Gel Method (A) | Direct Addition (B) |
| Best Application | Anti-rust primers, marine, zinc-rich | Automotive, PU, wood coatings |
Ready to Optimize Your Coating Formulation?
Our technical team can help you select the right organoclay grade and dosage for your specific coating system. Request a free sample or technical consultation today.
