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Patent Searching and Data


Title:
METHOD FOR PREVENTING QUINOLINES FROM COLORING
Document Type and Number:
Japanese Patent JPH083137
Kind Code:
A
Abstract:

PURPOSE: To provide a method for effectively preventing a fractionated quinoline from coloring with time at a low cost.

CONSTITUTION: This method for preventing quinolines from coloring with time is to add 0.05-0.5wt.% organic amines having reducing properties to a fractionated quinoline recovered from coal tar. The coloring is suppressed within 500 value of the coloring degree defined by the American Public Health Association (APHA) even after the passage of 2 weeks.


Inventors:
YANAI HIROSHI
SHIN KAZUYO
HARADA YASUO
SHIGYO KAZUAKI
NAGASE MASANORI
AKIMARU YUKIO
Application Number:
JP15807194A
Publication Date:
January 09, 1996
Filing Date:
June 16, 1994
Export Citation:
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Assignee:
NIPPON STEEL CHEMICAL CO
International Classes:
C07D215/04; C07B63/00; C07C215/08; C07C239/08; C10C1/08; C10C1/14; (IPC1-7): C07D215/04; C07B63/00; C07C215/08; C07C239/08; C10C1/14
Attorney, Agent or Firm:
Eiichi Sano (1 outside)