Process for preparing fluid detergent compositions
AssigneeUnilever Home & Personal Care USA, Division of Conopco, Inc.
InventorAndré Kaess
Life of this patent
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Abstract
A process for the preparation of fluid detergent product comprising an anionic surfactant in which the acid precursor of the anionic surfactant is fed through at least two mixing devices, sufficient neutralising agent to neutralise 25-75 wt % of the acid precursor being fed to the first mixing device, and sufficient neutralising agent to complete neutralisation being added to the mixture from the first mixing device to substantially complete neutralisation by the time the process stream exits the final mixing device, wherein the initial liquid component and the process stream are kept at pumpable temperature at all times during the process.
Claims16
A continuous process for the preparation of a fluid detergent product containing an anionic surfactant, comprising mixing an initial liquid component comprising the anionic surfactant acid precursor with sufficient neutralising agent to substantially complete neutralisation of the anionic surfactant acid precursor characterised in that
- (i) the initial liquid component is fed to a first mixing device with sufficient initial neutralising agent to neutralise 25-75 wt % of the anionic surfactant acid precursor, and
- (ii) the partially neutralised process stream from step (i) is fed through one or more subsequent mixing devices with sufficient further neutralising agent to substantially complete neutralisation by the time the fluid process stream exits the final mixing device,
- wherein the process stream comprising the initial neutralising agent is actively cooled by a cooling means prior to the addition of any further neutralising agent, and the initial liquid component and process stream are kept at a temperature above the pumpable temperature at all times during the process.
Dependencies are inferred from the claim text.