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:
Feb. 18, 2003
Filed:
Apr. 16, 2001
Applicant:
Inventors:
Alun P. James, Liverpool, GB;
Graham R. Horne, Warrington, GB;
Tom Candy, Warrington, GB;
Richard Rösler, Linz/Rhein, DE;
Manfred Mathes, Bad Hoenningen, DE;
Assignee:
Solvay (Societe Anonyme), Brussels, BE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C11D 1/700 ; C11D 3/39 ; C11D 3/12 ; C11D 3/395 ; C01B 1/510 ;
U.S. Cl.
CPC ...
C11D 1/700 ; C11D 3/39 ; C11D 3/12 ; C11D 3/395 ; C01B 1/510 ;
Abstract
Coated sodium percarbonate particles are provided which contain a sodium percarbonate core, and a coating layer substantially free from sulate, borate and magnesium compounds, having at least 30 and at most 75% w/w of an alkali metal carbonate and at least 25 and at most 70% w/w of an alkali metal silicate. The alkali metal carbonate and silicate being uniformly dispersed in the coating layer. Also provided is a process for the preparation of the coated sodium percarbonate particles and their use in detergent compositions.