PREPARATION OF SOLID, POWDERY RARE EARTH CARBOXYLATES BY EVAPORATION METHOD  

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Publication number: WO9839283 (A1)
Publication date: 1998-09-11
Inventor(s): ALAS MICHEL; YUNLU KENAN
Applicant(s): RHONE POULENC CHIMIE [FR]; RHODIA [US]
Classification:  
- international: B01J31/04; B01J31/14; C07C51/41; C07C53/126; C08F4/52; C08F36/00; C08F36/04; B01J31/04; B01J31/12; C07C51/41; C07C53/00; C08F4/00; C08F36/00; (IPC1-7): C07C51/41; B01J31/04; C08F4/52; C08F36/04
- European: B01J31/14B; B01J31/04; C07C51/41B; C08F36/04
Application number: WO1998US04045 19980303 
Priority number(s): US19970040327P 19970305; US19980012468 19980122
   
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Also published as:
  US6054563  (A)  
  JP2001511819  (T)  
  EP0907630  (A1)  
  CN1220655  (A)  
  CA2253499  (A1)  
 
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Cited documents:
  US5449387 (A)  
  EP0512346 (A2)  
  EP0375421 (A1)  
  WO9736850 (A1)  
  JP61176554 (A)  
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Abstract of WO 9839283  (A1)
A process for producing solid, powdery carboxylates of Rare Earths (RE) elements, among them mainly Nd, La, Pr and Ce, where the ligands coordinated to the metal are long-chain, branched carboxylic acids is provided. Preferably, the carboxylic acids are selected from the group consisting of: 2-ethylhexanoic, neodecanoic, versatic and naphthenic acids.

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