Non-polar capped nano transition metal oxides and sulfides

US8597609B2 · kind B2 · utility

Assignee

• Rubber Nano Products (Proprietary) Limited · ZA

Inventors

• Christopher Woolard · Cape Town, ZA
• Damien Christopher Williams · Gqeberha, ZA
• Jason Leigh van Rooyen · Gqeberha, ZA
• Katherine Garde · Gqeberha, ZA
• Robert Bosch · Gqeberha, ZA
• Stefanus Hendrik Josephus Strydom · Gqeberha, ZA

Key dates

• Filing date: May 22, 2007
• Grant date: Dec 3, 2013
• Expiry date: Jan 22, 2029

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01P2004/64
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

The present invention relates to a method for the preparation of a functionalized nano size transition metal oxide or sulfide particle comprising the steps of (a) providing a ternary solvent system comprising a polar solvent, a non-polar solvent and an intermediate solvent allowing miscibility of all three components; (b) providing a mixture of a transition metal salt and a ternary solvent; (c) providing a mixture of a suitable source of oxide or sulfide and the ternary solvent; (d) providing a mixture of a non-polar end capping agent and the non-polar solvent; (e) mixing the mixtures; and (f) recovering the resultant functionalized nano size transition metal oxide or sulfide particle. The invention further relates to non-polar end capped nano sized transition metal oxide or sulfide particle so produced and the use of such particles.