Process for making high performance dyes

Details Process for making high performance dyes Process for making high performance dyes

1999-06-01

2000-08-01

Raymond, Richard L.

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

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

562 58, 562 59, 562 60, 562 62, 562 64, 562 68, 562 70, 534845, C07C30929, C07C30930, C07C30932, C07C30935, B07C30941

Patent

active

060968893

ABSTRACT:
An aromatic amino sulfonic acid compound is purified by a process including steps of:

REFERENCES:
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patent: 4617381 (1986-10-01), Hinson et al.
patent: 4804387 (1989-02-01), Degen et al.
patent: 5366543 (1994-11-01), Ono et al.
patent: 5431723 (1995-07-01), Bermes et al.
Declaration of Kevin P. Cusak.
Vogel, Arthur, I., Text-Book of Practical Organic Chemistry, 586-589, 1957.

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