Disazo compound and ink composition containing the same

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United States of America Patent

PATENT NO 5149366
SERIAL NO

07773501

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Abstract

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A disazo compound of the formula (I) in the free acid form, ##STR1## and an ink jet recording ink composition containing the same are provided, and the composition is superior in stability during storage or use, heat resistance, image clearness, water resistance and light fastness, and has a desirable tint as a red color.

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Patent Owner(s)

Patent OwnerAddress
SUMITOMO CHEMICAL COMPANY LIMITED A CORP OF JAPAN15 KITAHAMA-5-CHOME HIGASHI-KU OSAKA
TAOKA CHEMICAL COMPANY A CORP OF JAPAN2-11 NISHIMIKUNI 4-CHOME YODOGAWA-KU OSAKA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kawashita, Hideo Osaka, JP 11 191
Ogino, Kazuya Osaka, JP 13 96
Ohta, Mituhiro Osaka, JP 3 35

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