Dynamic wetting agents
provide surface tension reduction and efficient wetting of pigment surfaces.
Additives offered: HASE thickeners, HEUR thickeners, microspheres, surface-active agents, surfactants and dispersing agents (nonionic), surfactants and dispersing agents, texturizing agents, associative thickeners, cellulosics, viscosity modifiers, wetting agents
In these experiments, the silicone carbinol fluid was used as a wetting agent
at 10% as part of the composition of an unpigmented coating, where a silicone resin was used in the formulation at 20% solids.
EnviroGem AD01 surfactant is recommended for use in waterborne and other systems in which a solvent-free wetting agent
and defoamer is desired.
The new wetting agent
can be used in the formulation of low-foaming surfactant blends, especially those subjected to mechanical agitation that encourages foam formation.
As shown in Figure 1, choosing the right wetting agent
for pigment wetting will not only provide the most efficient milling and color development, but also may aid in preventing foam generation during manufacture and application (see Figure 2).
Troysperse 90W, which acts as a dispersant and wetting agent
, can enhance the properties of many products and applications including inks, architectural and industrial coatings and color dispersions.
For example, adding a wetting agent
to a paste usually improve the low shear viscosity of both the paste and paint made from it and limits the viscosity increase with time after shearing.
Cognis' Functional Products business unit has developed a new low-foaming wetting agent
for waterborne systems.
EnviroGem AD01 surfactant is a defoaming wetting agent
Thus far, these include water-soluble flux, the Low-Solids Spray Fluxer (flux is a cleaning and wetting agent
sprayed on printed circuit boards to make the solder adhere better), and BIOACT EC-7, a cleaning solvent derived from orange peels.
Flocculation raises low shear viscosity, often substantially, and addition of a wetting agent
or dispersant (along with shearing) lowers it.