EFKA® PA 4401
Dispersing agent for industrial coatings and transportation topcoats with strong viscosity depression
EFKA® PA 4401 is a modified polyurethane for stabilizing inorganic and organic pigments with strong viscosity depressing properties. It improves gloss, reductions of flooding problems and higher color strength. This product is broadly compatible – from low- to high-polarity systems, including nitrocellulose. Care should be taken with EFKA® PA 4401 because of its tendency to yellowing and gelling when combined with chlorinated polymers. It also has a tendency to yellowing when combined with solvent-free epoxies. EFKA® PA 4401 is used for all kinds of high-quality solvent-based industrial coatings including automotive topcoats as well as pigment concentrates. It shows excellent viscosity depression for industrial colorants in combination with grinding resins such as LAROPAL® A 81.
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