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Title:
HIGH-PURITY ZIRCONIUM ALKOXIDE RAW MATERIAL AND PRODUCTION METHOD OF THE SAME, AND ANALYTICAL METHOD OF RAW MATERIAL
Document Type and Number:
Japanese Patent JP2015134799
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a method for efficiently producing a high-purity zirconium alkoxide raw material, whose high purification is specifically attained, that is, whose halogen and metal impurities are reduced.SOLUTION: Provided is a high-purity zirconium alkoxide raw material having, as measured by the following analytical methods, a halogen content of less than 1 mass ppm or less, each content of iron, chromium, and copper of less than 0.1 mass ppm, and a nickel content of less than 0.4 mass ppm. Analytical method of halogens: to a high-purity zirconium alkoxide raw material, as is or after being dissolved in an organic solvent, is added a basic aqueous solution; after removing precipitates, the aqueous solution portion of a solution, from which precipitates have been removed, is analyzed by ion chromatography for a halogen content in the high-purity zirconium alkoxide raw material. Analytical method of metal contents: to a high-purity zirconium alkoxide raw material, as is or after being dissolved in an organic solvent, is added an acidic aqueous solution; an aqueous solution part of this acidic solution is analyzed by inductive coupling plasma mass spectrometry (ICP-MS), inductive coupling plasma emission spectral analysis (ICP-AES), or a combination of these for contents of iron, chromium, copper, and nickel in the high-purity zirconium alkoxide raw material.

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Inventors:
HASEGAWA CHIHIRO
SHIRAI MASASHI
SAKURAI HIROYUKI
Application Number:
JP2015045356A
Publication Date:
July 27, 2015
Filing Date:
March 06, 2015
Export Citation:
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Assignee:
UBE INDUSTRIES
International Classes:
C07C31/125; C07F7/00; G01N30/02; G01N30/04; G01N30/88
Domestic Patent References:
JP2007314437A2007-12-06
JP2004359636A2004-12-24
JPH10273305A1998-10-13
Attorney, Agent or Firm:
Kazutoshi Nakayama



 
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