Dispersant Ultra FA 4431 is a product offered by BASF with the following characteristics and applications:

Properties:

Chemical Nature: It is a wetting and dispersing agent. It is a low molecular weight, water-based dispersant with acidic groups and is of the aliphatic polyether type.

VOC Content: It has a very low VOC (Volatile Organic Compounds) content, which is beneficial for formulating environmentally friendly coatings and inks.

Acid Value: It has an acid value of 100 mgKOH/g (as per one of the sources).

Function and Performance:

Wetting Ability: It shows excellent wetting ability for inorganic pigments and fillers, enabling them to be easily dispersed in various systems. This helps to reduce the grinding and dispersion time required during the production process.

Viscosity Reduction: In water-based systems, it can be used to decrease the viscosity of resin-free inorganic pigment concentrates, especially those based on high molecular weight dispersing agents like Dispex Ultra PA 4550.

Improved Pigment Loading: Allows for increased pigment loading in the mill base or pigment concrete, which is useful in formulating high-performance coatings with a high pigment content.

Enhanced Gloss and Flow: It can improve the gloss, leveling, and flow properties of coatings, resulting in a better appearance and application performance.

Application Areas:

Coatings: Widely used in architectural coatings, industrial coatings, and automotive OEM coatings. It is particularly suitable for solvent-based, solvent-free, and water-based coating systems. For example, it is effective in wetting, dispersing, and stabilizing inorganic pigments and fillers in solvent-free epoxy and polyurethane systems such as flooring or pipeline coatings.

Ink Formulations: Can be applied in the formulation of inks to ensure the uniform dispersion of pigments and improve the printing performance.