Pyrogenic titanium dioxide compressed to slugs

US8349441B2 · kind B2 · utility

Assignee

• EVONIK DEGUSSA GMBH · DE

Inventors

• Ralph Hofmann · Bergneustadt, DE
• Guenter Stein · Nidderau, DE
• Frank Menzel · Oakland, US

Key dates

• Filing date: Aug 9, 2007
• Grant date: Jan 8, 2013
• Expiry date: May 10, 2029

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01P2006/82
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Pyrogenic titanium dioxide is compressed to slugs by preliminarily deaerating it, compressing it to slugs, and crushing the slugs and optionally classifying them. The slugs are characterized by a tamped density (to DIN EN ISO 787-11) of 500 to 1200 g/l.