Dispex® CX 4240

• Highly effective, low-viscosity dispersing agent for water-based coating systems
• Especially suitable for the dispersion of inorganic pigments
• Allows formulations of high-gloss/low-pigment-volume-concentration coatings in addition to standard matt formulations.

• Dispex® CX 4240 is an ideal dispersing agent for a wide range of water-based coatings. The special copolymer backbone is designed for complete compatibility with polypropylene and hexylene glycols used in high proportions in water-based high-gloss coatings to promote wetedge time.
• The use of Dispex® CX 4240 is especially recommended when highgloss/ low-pigment-volume-concentration coatings are formulated.
• The neutralizing alkali used in conjunction with the acrylic polymer can significantly impact the properties of the final coating. Dispex® CX 4240 releases ammonia during the drying process and therefore has little impact on the resistances to water and alkali of the dry film.
• The use of Dispex® CX 4240 should be limited to pH 5 - 10.5 and tem-peratures lower than 70°C due to potential loss of volatile ammonia.
• Dispex® CX 4240 is based on an organic polymer and provides improved storage stability of both pigment dispersion and formulated paint when compared with inorganic dispersing agents, e.g., polyphosphate products. There is little or no adverse reaction to high temperatures.

Recommended dosages of Dispex® CX 4240 depend on the nature of the solids to be dispersed. In general the dosage is between 0.8 - 1.5%, calculated on the total formulation. In critical formulations it is possible to increase the dosage up to 2%.

As opposed to adding the dispersing agent to a pigment slurry, the pigment should be added to heavily stirred water to which the dis-persing agent had been added. In general, the pH of the final preparation should be in the region of 8.5 to obtain optimum dispersing efficiency.

• 1000KG Composite - IBC (PE/Metal)
• 220kg Plastic tighthead drum