Cray Valley's range of CRAYVALLAC® coating modifiers have been developed to help formulators improve the performance of water-based, solvent-free and solvent-based coatings. These modifiers are divided into two categories:

• Rheology Modifiers for the control of flow, sedimentation and sag resistance.
• Surface for the control of surface lubricity and appearance.

Rheology Modifiers

The CRAYVALLAC® rheology modifiers perform best in solvent-based and high-solids paint applications. Their incorporation into coatings systems using high-speed dispersers is ideal in that they generally provide sufficient temperature and shear for efficient action. With non-pigmented coatings systems, such as varnishes and stains, Cray Valley’s pre-activated and post-addition rheology modifiers provide a substantially better means to flow control. The following documents provide additional information regarding the selection of rheology modifiers from the CRAYVALLAC® products:

 Decorative Coatings

 Wood Finishes

For more product specific information regarding the CRAYVALLAC® range of rheology modifiers, please select the appropriate product bulletin from the following list:

Surface Modifiers

Cray Valley's range of CRAYVALLAC® surface modifiers are widely used in coating applications for the enhancement of surface lubricity. These surface modifiers are available as both micronised powders and easy to handle water-based and solvent-based dispersions. These CRAYVALLAC® surface modifiers provide the formulator with the following surface enhancements:

• Slip, mar, scrub and rub resistance.
• Anti-blocking, heat, water and solvent resistance.
• Control of gloss, silky-feel and enhanced sandability.

Due to their pre-wetted and pre-dispersed nature, the CRAYVALLAC® dispersions are often easier to handle and incorporate in water-based coatings. Compared to these, the CRAYVALLAC® micronised powders, although also suitable for use in water-based applications, generally require additional care in the form of wetting aids.

For more product specific information regarding the CRAYVALLAC® range of surface modifiers, please select the appropriate product bulletin from the following list: