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Patent Searching and Data


Title:
PURIFYING METHOD OF CRYSTALLINE COMPOUND
Document Type and Number:
Japanese Patent JPH09131501
Kind Code:
A
Abstract:

To provide a convenient purifying method of a crystalline compound capable of improving the crystal purify without complicated operations such as rinsing or reslurrying a crystal obtained by solid-liquid separating operation.

This purifying method of the crystalline compound comprises centrifugally separating the crystal containing impurities while heating to separate the impurities with the melting liquid. As a result, the remarkably high purity crystal is obtained at high purification yield compared to the conventional method by the simple method. The equipment cost is low because only a small improvement of an usual equipment is required and a solvent recovering equipment is unnecessary because any solvent is not used.


Inventors:
OOTA MICHITAKA
SOEDA MAHITO
OSHIMA FUMIHIKO
ICHIMARU SHIRO
Application Number:
JP29235795A
Publication Date:
May 20, 1997
Filing Date:
November 10, 1995
Export Citation:
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Assignee:
NIPPON STEEL CHEMICAL CO
International Classes:
B01D9/02; (IPC1-7): B01D9/02; B01D9/02
Attorney, Agent or Firm:
成瀬 勝夫 (外2名)