EFKA PX 4731 is a dispersant developed specifically for inkjet inks to provide the critical combination of strong viscosity suppression and excellent storage stability. EFKA PX 4731 is based on a proprietary process.

It is particularly effective in UV-curable systems and in mild-solvent systems based, for example, on glycol ethers.

EFKA PX 4731 is a solvent-free liquid product which is 100 % active. As such it is potentially suitable for use in any UV-curable ink system including UV-curable flexographic and screen inks.

It is also well suitable for UV-curable and even solvent-based resin-free pigment concentrates (RFPC) for a wide range of applications.

The product is somewhat less polar in nature than EFKA PX 4732.

Applications

EFKA PX 4731 is excellent in stabilizing organic and inorganic pigments in low-viscosity systems based on acrylate-functional UV monomers and in organic solvents.

The stabilizing properties of the dispersant are so strong that even stable resin-free concentrates in organic solvents can be made at use levels that would normally demand a complementary dispersing resin.

Please find more application information in the Technical Data Sheet (TDS) below.