Dispersant DISPEX CX4240.

. DISPEX CX4240
Product Overview:
DISPEX CX4240 belongs to BASF's high-efficiency water-based coating dispersant family, especially for inorance pigment dispersion, DISPEX CX4240 is more suitable for high gloss low PVC coating formulations than other types of dispersants.
DISPEX CX4240 is a water solution of acrylic co-polyplication ammonium salt.
because the molecular weight distribution of acrylic co-polymers is controlled within the range of accurate concentration, the quality of DISPEX CX4240 is very stable, and the exact concentrated molecular weight distribution maximizes the dispersion effect.typical physical characteristics:
appearance; Bar color, liquid
solid content: 41%
pH value 7.5
25 degrees C dynamic viscosity (Brookfield 20rpm) 40mPa.s 20 degrees C
proportion: 1.13
(typical physical characteristics are a reference for the physical data of the product provided by the supplier to the user or potential user) Data, should not be used as a product qualified or not testing standards, test indicators and methods please refer to the product inspection report and product indicators file)applicable range
DISPEX CX4240 in a wide range of water-based coating systems have ideal dispersion and stability Effect, special polymer molecular chain structure makes DISPEX CX4240 and high gloss coating glycol and other polymers have perfect compatible, while in light paint glycol and polymer ratio is usually relatively high.
ISPEX CX4240 is particularly recommended for high gloss low PVC coating formulations.
type of alkali used in acrylic polymers will significantly affect the final performance of the coating. DISPEX CX4240 releases ammonia during drying, and the paint film is water- and alkaline-resistant. Compared with other inormeric salt dispersants such as polyphosphate, the polymer dispersant DISPEX CX4240 significantly improves pigment dispersion and coating storage stability.
the pH range 5-10.5 of the DISPEX CX4240, the applicable temperature range is not greater than 70 degrees C, so as not to lose more ammonia and affect the use of the effect.Use Method:
In the case of rapid stirring, the pigment powder is added to water already containing DISPEX CX4240, instead of adding the dispersant to the pigment will, usually with a pH of 8.5, the dispersion effect is best.: The maximum dosage of
dispersants depends to a large extent on the chemical composition of the pigment, the surface properties and shape of the particles, and is also closely related to the type of latex. In general, severe overuse can impair some of the properties of the coating and increase costs, similarly, insufficient dosing will lead to a decrease in the stability of the coating storage.
like similar dispersants, the actual formulation dosage is recommended to be 1.5-2 times the theoretical optimal dosage due to fluctuations in quality performance between batches of pigments or latex..