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Title:
METHOD FOR PRODUCING COLORING MATTER COMPOUND HAVING SULFO GROUP
Document Type and Number:
Japanese Patent JP2006282749
Kind Code:
A
Abstract:

To provide a method for producing a coloring matter compound having a sulfo group, the method reducing the load on the environment and being economic on an industrial scale, the coloring matter compound having stable qualities.

The method for producing the coloring matter compound having a sulfo group (example compound 3) includes the steps of; sulfonizing a material of the coloring matter compound (e.g. material (1)-1) under the existence of an aromatic nitro compound and/or a sulfone compound (e.g. 1), and heat-treating at a temperature range of 50-80°C after adding water.


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Inventors:
SHIRAKI NOBORU
YONEKURA OSAMU
MORI HIDETO
Application Number:
JP2005101915A
Publication Date:
October 19, 2006
Filing Date:
March 31, 2005
Export Citation:
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Assignee:
FUJI PHOTO FILM CO LTD
International Classes:
C09B43/02; C07D417/14
Domestic Patent References:
JP2002371079A2002-12-26
JP2002371214A2002-12-26
JP2001064528A2001-03-13
JPH0625259A1994-02-01
JP2004035773A2004-02-05
JP2004285030A2004-10-14
JPS5115029B21976-05-13
JPS5173530A1976-06-25
Attorney, Agent or Firm:
Patent Service Corporation Patent Office Sykes



 
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