Organoclay for solvent based coatings
Organoclay for solvent based coatings,reducing Settling Problems in Solvent-Based Paints: A Practical Organoclay Selection Case from Thailand
Why Organoclay Selection Matters in Industrial Coating Formulations
In solvent-based coating production, anti-settling performance is one of the most important factors affecting product quality during storage and transportation. Poor suspension stability can lead to pigment sedimentation, inconsistent viscosity, and reduced coating performance after storage.
For coating manufacturers, solving these problems is not simply about choosing the strongest rheological additive. In many cases, the real challenge is identifying the most suitable organoclay grade for a specific solvent system while maintaining reasonable production cost.
A recent project with a Thailand-based industrial paint manufacturer clearly demonstrated how formulation matching and application testing can help optimize both coating stability and cost efficiency.
Customer Requirement: Improve Storage Stability Without Increasing Formula Cost
The customer is a large producer of solvent-based industrial coatings in Thailand. Their technical team was looking for an organoclay rheological additive capable of delivering:
Reliable anti-settling performance
Stable viscosity during storage
Good dispersion behavior
Better cost control for large-volume production
Before cooperation, the customer had already evaluated several organoclay products within its own formulation system.
Some low-polarity grades, including CP-34, CP-26B, and CP-180, were unable to achieve the required suspension stability in the coating system. Although these products provided partial rheological improvement, the long-term storage behavior was not satisfactory.
The customer also tested higher-performance grades such as CP-2148 and CP-2134. These products showed excellent stability and passed the technical evaluation successfully. However, the customer hoped to reduce raw material costs while maintaining similar performance standards.
Organoclay for solvent based coatings
This meant the project objective was not only technical qualification, but also formulation cost optimization.
Evaluating a More Economical Organoclay Solution
To support the customer’s target cost range, our technical team proposed CP-RL for additional testing.
The evaluation focused primarily on storage stability under different conditions.
High-Temperature Storage Test
The first test involved accelerated aging under elevated temperature conditions for 14 days.
The results showed that both CP-RL and the customer’s existing standard formula maintained stable suspension performance without visible hard settling.
This indicated that CP-RL could provide acceptable short-term thermal stability in the solvent-based coating system.
Long-Term Room Temperature Observation
The second phase focused on long-term storage at room temperature over approximately two and a half months.
During this period, both formulations developed soft settling, which is relatively common in industrial solvent-based coatings. The sediment remained soft and could be easily re-dispersed through mixing.
However, compared with the customer’s reference formulation, CP-RL showed slightly higher settling levels during extended storage.
Although the result was technically acceptable, the customer expected improved long-term suspension behavior for commercial production.
Organoclay for solvent based coatings
Final Optimization with CP-10 Organoclay
After reviewing the storage data, our application engineers recommended CP-10 for further evaluation.
The goal was to improve long-term anti-settling performance while preserving the customer’s cost targets and application properties.
The subsequent testing demonstrated that organoclay for solvent based coatings CP-10 achieved a more balanced rheological structure within the coating system.
Compared with the earlier trials, the formulation showed:
Better pigment suspension stability
Reduced settling during storage
More consistent rheological performance
Improved coating uniformity after long-term storage
Most importantly, organoclay for solvent based coatings CP-10 successfully met both technical and economic expectations.
Commercial Outcome
Following successful production-scale validation, the customer officially adopted organoclay for solvent based coatings CP-10 in its solvent-based coating formulations.
The cooperation later developed into stable monthly purchases of approximately three containers per month.
More importantly, the project established long-term technical collaboration between both teams for future coating formulation optimization.
What This Case Demonstrates
This case highlights an important point in solvent-based coating formulation:
Selecting the correct organoclay is not only about choosing the highest-performance grade.
Factors such as:
Polarity compatibility
Dispersion efficiency
Storage behavior
System rheology
Cost-performance balance
all play critical roles in final application success.
Through systematic testing and formulation analysis, coating manufacturers can often identify a more suitable rheological additive that improves both performance consistency and production economics.
For industrial paint manufacturers seeking anti-settling additives, this type of application-focused organoclay evaluation can significantly improve formulation efficiency and long-term product stability.
organoclay for solvent based coatings
Organoclay is the commercially available organically modified clay mineral used as a rheology modifier and anti-settling additive in oil-based systems including drilling fluids, solvent-based coatings, and lubricating greases; full product specifications are at organoclay — product specifications and application guide. The organophilic clay surface chemistry, dispersion method, and compatibility with different base oils and solvents are explained in organophilic clay — surface chemistry and industrial applications. To source organoclay directly from a China manufacturer, see organoclay supplier — factory-direct supply and technical support.
