Neodymium hydroxy/ammonium nitrate

US4698175A · kind A · utility

Assignee

• Rhone-Poulenc Specialities Chimiques · FR

Inventors

• Claire Gourlaouen · Paris, FR
• Claude Magnier · Paris, FR
• Bertrand Latourrette · Le Raincy, FR
• Anne Tugaye · Bougival, FR
• Francoise Deneuve · Paris, FR

Key dates

• Filing date: Jul 11, 1986
• Grant date: Oct 6, 1987
• Expiry date: Jul 11, 2006

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01P2004/61
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A novel neodymium hydroxy/ammonium nitrate, readily calcined into, e.g., neodymium oxide, Nd.sub.2 O.sub.3, has the formula (I): EQU Nd(OH).sub.x (NO.sub.3).sub.y.n NH.sub.4 NO.sub.3.z H.sub.2 O (I) wherein 2.ltoreq.x.ltoreq. 2.3,0.7.ltoreq. y.ltoreq.1.0,0.8.ltoreq. z.ltoreq.1.25; and 0.8.ltoreq. n.ltoreq. 1.25.