Title:
【発明の名称】二酸化第二セリウムをアルコール中に分散させてなるコロイド分散体の製造方法
Document Type and Number:
Japanese Patent JP2785018
Kind Code:
B2
Abstract:
A process is provided for preparing colloidal dispersions of alcohol-dispersible association complexes of ceric dioxide and a hydroxyphenyl carboxylic acid having from about seven to about twenty carbon atoms in a molar ratio CeO2/acid of at least about 6:1 which comprises: (1) mixing (a) ceric dioxide comprising ammonium nitrate or ammonium and nitrate ions in an amount within the range from about 3 to about 14% by weight of the ceric dioxide and a member selected from the group consisting of water, methanol, acetic acid and mixtures thereof in an amount usually from about 10 to about 60 g per mole of CeO2, sufficient to effect reaction with (b) a hydroxyphenyl carboxylic acid having from about seven to about twenty carbon atoms (c) an aliphatic alcohol, such as methanol, isopropanol, 2-ethoxy ethanol, etc. at a temperature within the range from room temperature to about 100 DEG C., thereby effecting dispersion of the ceric dioxide in the aliphatic alcohol.
Inventors:
PIITAA ESU GURADEFU
KARUROSU RAMIRESU
KARUROSU RAMIRESU
Application Number:
JP20489588A
Publication Date:
August 13, 1998
Filing Date:
August 19, 1988
Export Citation:
Assignee:
ROONU PUURAN SHIMI
International Classes:
C01F17/235; C09D7/12; C07C59/52; C07C65/03; C07F5/00; (IPC1-7): C07F5/00
Domestic Patent References:
| JP5945925A | ||||
| JP6236389A | ||||
| JP61130246A |
Attorney, Agent or Firm:
Motohiro Kurauchi (1 outside)