Claytone rheological additives are produced from carefully selected natural sodium bentonite. Only a very small percentage of all the bentonite in the world is suitable for the production of Claytone additives, and Southern Clay Products searches the globe to find the most suitable bentonite. Claytone additives are "organically modified" clays that are produced by reacting organic cations, such as a quaternary ammonium chloride with bentonite. The reaction changes the nature of the clay from hydrophilic to oleophilic. Claytone additives are used to provide various rheological characteristics to solvent-based or oil-based formulations. Claytone additives are the rheology modifiers of choice for solvent-based and oil-based inks, paints, greases, oil well drilling fluids, consumer care products, sealants, and adhesives.
Clays that are not kaolins, ball clays or bentonites. For example, stoneware clays are mixtures of all of the above plus quartz, feldspar, mica and other minerals. There are also many clays that have high plasticity like bentonite but are much different mineralogically.
Materials that are added to bodies and glazes to impart physical working properties and usually burn away during firing.
In ceramics, this term refers to the flow and gel properties of a glaze or body suspension (made from water and mineral powders, with possible additives, deflocculants, modifiers).
By Tony Hansen
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