Wood Coatings & Transparent Primers Rheology Solution

In wood coatings, clear varnishes, and transparent primers, rheology control is critical. These systems require not only strong anti-settling performance, but also high transparency, excellent dispersion, and fine particle fineness to maintain a clean and premium appearance.

Organic bentonite rheology additives play a key role in achieving these performance targets.

Key Performance Requirements in Wood Coatings

Wood coating and clear systems typically demand:

● Excellent anti-sagging and anti-settling behavior
● High transparency without haze or cloudiness
● Fine and stable dispersion in solvent systems
● Good compatibility with pigments and additives
● Balanced viscosity build-up without affecting gloss or clarity

Recommended Solutions

1. BT-185 – High Transparency & Enhanced Performance Grade

BT-185 is designed for low to medium polarity aromatic and aliphatic solvent systems.

It is especially suitable for:

Wood varnishes
Transparent primers
High-end decorative coatings

Key application characteristics:

Requires polar activator (typical usage: 40–50% of organoclay weight)
Excellent transparency after activation
Helps improve coating durability and resistance to yellowing
Strong anti-settling and anti-sedimentation performance

👉 Typical dosage: 0.5–1.5%

2. BT-381 – Direct-Add, Easy Dispersion Grade

BT-381 is optimized for systems where convenience and simplicity of processing are required.

It is suitable for:

• Wood coatings
• General solvent-based varnishes
• Transparent and semi-transparent systems

Key application characteristics:

• Can be added directly as dry powder
• No polar activator required
• Easier dispersion process compared with conventional organoclays
• Maintains transparency in clear coating systems

👉 Typical dosage: 0.5–1.5%

Application Benefits in Wood Coatings

Using the right organoclay system helps coating formulators achieve:

• Improved storage stability
• Reduced pigment and filler settling
• Better application performance (brushing/spraying)
• Enhanced clarity in transparent systems
• More stable production process

Conclusion

For wood coatings and transparent primer systems, selecting the correct organoclay grade is essential to balance clarity, stability, and processing efficiency.