Although used extensively, dispersing these pigments is by no means without a challenge. Especially the rheological behaviour of the mill base can be difficult to control, which can lead to decreased pigment loading or the need to use a pigment synergist. Such synergists usually have a positive effect on rheology, but can lead to leaching problems in the final application. In this contribution BASF presents two new dispersing agents for Cu-phthalocyanine pigments for solvent based and high-solids applications. The dispersing agents are based on advanced polymer technologies, such as controlled free radical polymerization, which allow a perfect control over polymer architecture. This high level of structural control results in increased efficiency of the dispersing agents and reduces the need to use a pigment synergist.
Efka® PX 4350 designed with CFRP technology for increased efficiency sets a new standard in dispersing β- and ε- phthalo pigments, providing Newtonian rheology at high pigment loading.
Efka® PX 4751 is especially suited to disperse α-pigments, reducing the thixotropic behaviour of the millbase.
Both are recommended for solvent based systems, high solids industrial and OEM/refinish coatings applications also showing broad compatibility towards acrylate/CAB, 2-Pack solvent-based PU and 2-Pack solvent-based epoxy systems.
Therefore if you would you like to...
Then BTC Europe have the answer with Efka® PX 4350 and Efka® PX 4751!
For further information please contact us.