Method for forming azo colorant using diazo compound and...

Details Method for forming azo colorant using diazo compound and... Method for forming azo colorant using diazo compound and...

2005-03-08

2005-03-08

Chu, John S. (Department: 1752)

Radiation imagery chemistry: process, composition, or product th

Microcapsule, process, composition, or product

C430S157000, C430S163000, C430S179000, C430S181000, C430S182000, C430S189000

Reexamination Certificate

active

06864032

ABSTRACT:
The present invention provides a method for forming an azo colorant by reaction of a diazo compound and a coupler. The coupler has a leaving group at the coupling position thereof, such that a coupling reaction rate is faster than it would be if the coupler did not have the leaving group. The coupling reaction rate constant k is preferably 0.1 (s−1) or more.

REFERENCES:
patent: 5866293 (1999-02-01), Nomura et al.
patent: 5925489 (1999-07-01), Kawabuchi et al.
patent: 6228553 (2001-05-01), Matsushita et al.
patent: 6346359 (2002-02-01), Yamada et al.
Helvetica Chimica Acta, vol. 55, Fasc. 6 (1972), Nr. 206, pp. 2139-2145.
J.C.S. Perkin II (1982), pp. 455-459.
Science & Industry, vol. 60(8), pp. 307-314 (1986).

Affiliated with

Also associated with

Rating

Method for forming azo colorant using diazo compound 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 Method for forming azo colorant using diazo compound and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for forming azo colorant using diazo compound and... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3453921