Process for preparing chemical formulations comprising a neutralized component

A continuous process for the preparation of a chemical formulation comprising at least water, an ionic surfactant and a co-surfactant, wherein the ionic surfactant is prepared in situ by reacting a precursor of the ionic surfactant with a neutralization agent and the process comprises the steps of:

• i) mixing at least one precursor of the ionic surfactant, the co-surfactant and the neutralization agent by at least one mixing device selected from the group consisting of continuous stirred tank reactors, high shear mixers, mixing pumps, inline mixers, static mixers and mixing nozzles,
• ii) removing the obtained chemical formulation through an outlet, wherein
• the precursor of the ionic surfactant is an acid,
• the co-surfactant anionic having ammonium as counterion, and
• the neutralization agent is a base not comprising an ammonium cation, and
• wherein step i) comprises the sub-steps of:
• i-1) combining at least one precursor of the ionic surfactant with the co-surfactant,
• i-2) mixing the mixture obtained in step i-1),
• i-3) adding at least one neutralization agent, and
• i-4) mixing the mixture obtained in step i-3).