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. 12, 1991
Filed:
Apr. 02, 1990
Applicant:
Inventors:
Mareike K Klee, Huckelhoven/Brachelen, DE;
Hans-Wolfgang Brand, Aachen, DE;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
423608 ; 423609 ; 423610 ;
Abstract
A method of manufacturing titanium dioxide powder by hydrolysis of a titanium alcoholate, in which the titanium alcoholate is made to react with a 10M acetic acid aqueous solution and an aqueous ethanol solution under an N.sub.2 atmosphere, the precipitate consisting of titanium dioxide is separated from the liquid phase after a reaction time of 24 hours, the precipitate is rinsed with deionized water and subsequently with an aqueous ammoniacal solution having a pH value of 9, and the phases are separated.