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:
Jul. 29, 1980
Filed:
Apr. 10, 1978
Jean Brichard, Vilvoorde, BE;
Jean-Claude Colery, Brussels, BE;
Interox, Brussels, BE;
Abstract
Abrasion resistant granules of sodium perborate monohydrate are made by introducing an aqueous solution containing hydrogen peroxide and an aqueous solution containing sodium metaborate simultaneously into a fluidized bed dryer which contains seeds of a size smaller than that of the desired granules. At least one surface active agent is introduced into at least one of the aqueous solutions containing hydrogen peroxide and sodium perborate. Water present in the aqueous solutions is evaporated by fluidization gas which is introduced into the fluidized bed dryer. The process produces, in one stage, granules of sodium perborate monohydrate having a high rate of dissolution, good flowability, abrasion resistance, and other desirable properties.