Organic compounds -- part of the class 532-570 series – Organic compounds – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
2006-04-25
2006-04-25
Wilson, James O. (Department: 1623)
Organic compounds -- part of the class 532-570 series
Organic compounds
Heterocyclic carbon compounds containing a hetero ring...
C534S015000
Reexamination Certificate
active
07034149
ABSTRACT:
The present invention relates to a cyan dye mixture, an ink composition containing the mixture and a method of ink-jet recording with the ink composition. The print obtained by the method is characterized by discoloring or fading little even when allowed to stand in a well ventilated shade or in an ozone gas. The cyan dye mixture comprises compounds which are obtained by chlorosulfonating, as a starting material, copper phthalocyanine or a sulfonated copper phthalocyanine and then aminating the chlorosulfonation product with an aminating agent used in an amount of at least 2.5 mol per mol of the starting material, and which are represented by the following formula (1):wherein M represents a proton, alkali metal ion, alkaline earth metal ion, onium ion of an organic amine, or ammonium ion; m is an integer of 1 to 4; and n is an integer of 0 to 3; provided that m+n is an integer of 1 to 4.
REFERENCES:
patent: 2300572 (1942-11-01), Hoyer et al.
patent: 62-190273 (1987-08-01), None
patent: 7-138511 (1995-05-01), None
Fujii Takafumi
Hirokazu Kitayama
Namba Shin-ichi
Otani Junji
Shirasaki Yasuo
Nields & Lemack
Nippon Kayaku Kabushiki Kaisha
Ward Paul V.
Wilson James O.
LandOfFree
Cyan dye mixture, water-based cyan ink composition, and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Cyan dye mixture, water-based cyan ink composition, and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cyan dye mixture, water-based cyan ink composition, and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3553147