Disazo red reactive dye compound containing quarternary...

Details Disazo red reactive dye compound containing quarternary... Disazo red reactive dye compound containing quarternary...

2007-06-19

2007-06-19

Powers, Fiona T. (Department: 1626)

Organic compounds -- part of the class 532-570 series

Organic compounds

Azo

C534S612000, C534S614000

Reexamination Certificate

active

11545420

ABSTRACT:
The present invention relates to a disazo red reactive dyestuff containing quaternary ammonium group of the following formula (1):wherein R′, R″, m, n, Y1and Y2are defined the same as in the specification. The disazo red reactive dyestuff of the present invention has a good dye uptake while dyeing cellulose fibers, which satisfies the economical demand of high build up in the market.

REFERENCES:
patent: 6537332 (2003-03-01), Tzikas et al.
patent: 08-60017 (1996-03-01), None

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