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:
Mar. 09, 1976
Filed:
Jun. 18, 1973
Applicant:
Inventors:
Horst-Dieter Wasel-Nielen, Hurth-Hermulheim, DT;
Gero Heymer, Erftstadt Liblar, DT;
Peter Wirtz, Konigstein, Taunus, DT;
Assignee:
Hoechst Aktiengesellschaft, Frankfurt, DT;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01B / ; C01B / ;
U.S. Cl.
CPC ...
423311 ; 106 74 ; 106 84 ;
Abstract
The invention provides condensed aluminum phosphates which contain P.sub.2 O.sub.5 and Al.sub.2 O.sub.3 in a molar ratio equal to or greater than 1.5:1, are X-ray amorphous and have an apparent density between 50 and 200 grams/liter. They are made by spray-drying an aluminum orthophosphate solution or suspension containing P.sub.2 O.sub.5 and Al.sub.2 O.sub.3 in the molar ratio desired in the final product, in a spray tower at temperatures higher thana 250.degree.C to effect direct transformation into condensed aluminum phosphates.