The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 24, 2011
Filed:
Oct. 16, 2007
Nigel Patrick Somerville Roberts, Newcastle Upon Tyne, GB;
Paul Andrzej Luksza, Newcastle Upon Tyne, GB;
Gordon Ridley, Newcastle Upon Tyne, GB;
Callum Niall Fergus Finlay, Newcastle Upon Tyne, GB;
Alan Thomas Brooker, Newcastle Upon Tyne, GB;
Nigel Patrick Somerville Roberts, Newcastle Upon Tyne, GB;
Paul Andrzej Luksza, Newcastle Upon Tyne, GB;
Gordon Ridley, Newcastle Upon Tyne, GB;
Callum Niall Fergus Finlay, Newcastle Upon Tyne, GB;
Alan Thomas Brooker, Newcastle Upon Tyne, GB;
The Procter & Gamble Company, Cincinnati, OH (US);
Abstract
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° C. to 140° C., and wherein the outlet air temperature of the spray-drying tower is in the range of from 70° C. to 120° C.