Wax Emulsions: A Total Solution

An emulsion is a two phase system, formed by two partly miscible liquids, one of them dispersed in the form of small globules (dispersed or internal phase) into the body of the other (continuous or external phase). In some cases, an external agent can be added to one of the two liquid phases, to facilitate the formation and stability of the dispersion.

In any kind of emulsion, the great interfacial tension and interfacial area result in a higher free energy for the emulsion, compared to that of the two separate phases. To supply this energy, an equal amount of mechanical work must be added to achieve the phase integration. An active surface agent, such as soap or detergent, or any molecule with one polar and one hydrocarbon ends, can be added to the separate wax-water systems to considerably reduce the interfacial tension, as well as to extend the emulsion stability. These additives are known with the name of "emulsifying agents".

An emulsifiable wax (natural, petroleum or synthetic) can be normally dispersed in water, with or without alteration of its original chemical composition, with the participation of an emulsifying agent.

The aim of producing a Wax Emulsion (disperse phase) in water (continuous phase) is to take advantage of water evaporation after the emulsion application, in order to assure a uniform impregnation and deposit of the wax material on the treatment surface.

Wax Emulsions are currently used for treating diverse surfaces, such as particleboard, cardboard, egg trays, gypsum panels and other construction materials, PVC, rubber and textile products, among others.

Properties of Wax Emulsions

Notes:

• Norwax^® and Coreshield^® are Registered Trade Marks of Walker Industries Holdings Ltd.
• Coreshield^® Patents : United States- 6,890,976; Canada- 2,449,735; Mexico- 233,730.

• For more specific information about Physical-Chemical Properties please contact Commercial Department and ask for Technical Data Sheets.