The Procter Gamble Company

Gordon Ridley

Alan Thomas Brooker

Nigel Patrick Somerville Roberts

Geoffrey G Dawson

Paul Andrzej Luksza

Callum Niall Fergus Finlay

The present invention relates to a spray-drying process for the preparation of a spray-dried detergent powder having a bulk density of 426 g/l or less, wherein the spray-dried detergent powder comprises an anionic detersive surfactant and from 0 wt % to 10 wt % zeolite builder and from 0 wt % to 10 wt % phosphate builder, and wherein the process comprises the step of: (a) preparing an aqueous slurry suitable for spray-drying comprising from 30 wt % to 60 wt % water and from 40 wt % to 70 wt % non-aqueous material, wherein the non-aqueous material comprises an inorganic component and an organic component, wherein the weight ratio of the inorganic component to organic component is in the range of from 0.3:1 to 5:1; and (b) spraying the slurry into a spray-drying tower, wherein the temperature of the slurry as it enters the spray-drying tower is in the range of from 65&#xb0; C. to 140&#xb0; C., and wherein the outlet air temperature of the spray-drying tower is in the range of from 70&#xb0; C. to 120&#xb0; C.

Spray-drying process for preparing a low density, low builder, highly water-soluble spray-dried detergent powder

Toilet compositions in beta-phase bar form comprising 45% to 90% C.sub.8-24 fatty acid soap, 0.5% to 45% of ethoxylated nonionic surfactant, and 0.01% to 5% of a water-soluble polymer. The compositions have improved scum-control uncharacteristics with excellent mildness, smear, lathering and transparency/translucency.

In beta-phase bar form containing soap, high HLB nonionic surfactant,

Transparent or translucent toilet compositions in bar form incorporating a smectite-type clay. The compositions are preferably milled toilet bars and demonstrate improved skin conditioning performance on oily skin types together with excellent bar appearance.

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Newcastle upon Tyne, United Kingdom

Gordon Ridley