NONPIGMENTARY TITANIUM DIOXIDE POWDERS

The present invention is directed to a process for preparing free flowing powders of nonpigmentary titanium dioxide granular aggregates. The process comprises the providing of dried preforms of flocculated pigmentary titanium dioxide and the comminution thereof to powders of granular aggregates of e...

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Bibliographic Details
Main Authors BRAND, JOHN, R, STORY, PHILLIP, M
Format Patent
LanguageEnglish
Published 22.03.1990
Edition5
Subjects
CHEMISTRY
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F
INORGANIC CHEMISTRY
METALLURGY
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Summary:The present invention is directed to a process for preparing free flowing powders of nonpigmentary titanium dioxide granular aggregates. The process comprises the providing of dried preforms of flocculated pigmentary titanium dioxide and the comminution thereof to powders of granular aggregates of enhanced bulk density and predetermined particle size. Cette invention concerne un procédé de préparation de poudres à écoulement libre d'agrégats granulaires de dioxyde de titane non pigmentaires. Le procédé consiste à préparer des préformes séchées de dioxyde de titane pigmentaires en flocons et à brute les broyer pour en faire des poudres d'agrégats granulaires de masse volumique supérieure et de granulométrie prédéterminée.
Bibliography:Application Number: WO1989US03717