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. 21, 1978
Filed:
Aug. 31, 1976
William L Kehl, Indiana Township, PA (US);
Gulf Research & Development Company, Pittsburgh, PA (US);
Abstract
Thermally stable composite precipitates containing aluminum phosphate and alumina and having a surface area of from about 100 to about 200 m.sup.2 /g together with an average pore radius of from 75 to 150 A are defined. These materials are prepared by neutralizing an aqueous solution of aluminum cations and PO.sub.4 anions at a controlled pH of between 7 and 10.0, and wherein the neutralizing medium is either ammonia or certain defined amine based materials such as ammonium hydroxide, ammonium carbonate or urea. There is a stoichiometric excess of aluminum to phosphorus over that required to form AlPO.sub.4. Due to their thermal stability these alumina-aluminum phosphates are particularly useful as catalyst supports for various reactions, including polymerization of ethylene.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile