Phosphate Esters

J & W Whewell offers phosphate ester-based anionic surfactants exhibiting an excellent emulsifying, dispersing, lubricating, antistatic and corrosion-inhibiting properties.  Most are available in free acid form that may be neutralised with a number of different bases.

The solubility, emulsifying and dispersing properties of phosphate esters vary with the nature of the hydrophobe on which then are abased or the degree of ethoxylation and phosphation.  They range from being soluble in paraffinic hydrocarbons to being soluble in water containing high levels of electrolytes. The products with highest water solubility act as hydrotropes to solubilise other surfactants in high concentrations of salts and alkalis.

Neutralisation with alkali metal hydroxides or alkanolamines increases the water solubility of phosphate esters while neutralisation with higher molecular weight amines may produce oil soluble products with good lubricating and corrosion-inhibiting properties.

In addition to the standard range of phosphate esters, J & W Whewell can formulate and test new products to meet individual customer requirements and solve specific application problems.