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:
Apr. 14, 1981
Filed:
Oct. 26, 1976
The Lion Fat & Oil Co., Ltd., Tokyo, JP;
Abstract
A method is provided for spray drying a detergent slurry in a spray drying chamber having at least two different levels of uniformly spaced atomizing nozzles, which slurry consists of about 50 to 70% by weight of solid constituent comprising 20 to 40% by weight of active ingredient containing an anionic surfactant, 5 to 30% by weight of water-soluble silicate and at most 21% by weight of phosphate builder and about 50 to 30% by weight of water. The lower stage of the two adjoining spraying stages is positioned at a point in the spray drying chamber where the moisture content of the particles sprayed from the upper spraying stage becomes less than about 25% by weight. The lowest spraying stage is positioned at a point in the spray drying chamber which is at a temperature of from higher than the boiling point of the detergent slurry to less than 200.degree. C. From 30 to 70% of the slurry is sprayed from said lowest stage. There can be obtained a granular detergent which is an excellent granular material by this method.