CRAYVALLAC PA4X20

CRAYVALLAC PA4X20 is a pre-activated amide wax rheology modifier dispersed in a mixture of xylene and alcohols for use in varnishes and topcoats where a high degree of transparency and gloss is required. CRAYVALLAC PA4X20 is best added to solvent-based industrial coatings following the pigment grind stage, where it provides good control of sedimentation and sag. When using a high-speed disperser, it is recommended that Crayvallac PA4X20 be added during the final stages of production, when the coating has been partially thinned to a viscosity of approximately 600 - 800 mPa.s (ICI cone and plate at 10000s -1) and the peripheral speed reduced to approximately 4 ms-1. Too high a speed results in destruction of the active components.


Adobe Acrobat View: Technical Data Sheet and Technical Information

Adobe Acrobat View: Incorporation Technique and Storage Stability
 

Although these technical papers are specific to CRAYVALLAC PA3X20, the principles of incorporation outlined are general to all pre-activated amide pastes.