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. 14, 1978
Filed:
May. 27, 1975
Edgar Klein, Odenthal, DT;
Reinhard Kracke, Opladen, DT;
Walter Nespital, Odenthal, DT;
Rudiger Paul, deceased, LATE OF Leverkusen, DT;
Kronos Titan G.m.b.H., Leverkusen, DT;
Abstract
The application is concerned with a process for the manufacture of a titanium dioxide pigment from a titanium sulfate solution by hydrolysis in the presence of nuclei. The latter may be formed externally from any suitable source of titanium sulfate solution and preferably, but not exclusively, from a portion of the titanium sulfate solution used in forming the hydrous TiO.sub.2 ; the nuclei being prepared by mixing the titanium sulfate solution, from whatever source, simultaneously with an alkaline reacting solution and subsequently curing the mixture at elevated temperature. In the present application 'titanium sulfate solution' is understood to be a solution which may also contain other substances besides titanium sulfate; and may be obtained, for example, by digestion of titaniferous ores or slags using sulfuric acid, followed by dissolution of the resulting digestion cake.