WATER-SOLUBLE AZO COMPOUNDS AND PROCESS FOR THE PREPARATION THEREOF

Title:

WATER-SOLUBLE AZO COMPOUNDS AND PROCESS FOR THE PREPARATION THEREOF

Document Type and Number:

WIPO Patent Application WO/1999/033925

Kind Code:

A1

Abstract:

Novel water-soluble azo compounds useful as raw materials for preparing dyes excellent in dyeing properties and fastness and prepared from a coupler consisting of 2-hydroxynaphthalene-3,6-dicarboxylic acid or an ester thereof or an amide derivative of the same and a diazonium compound having a group of the general formula:-B-(CH¿2?)¿2?-Q or -B'-(CH¿2?)¿2?-Q' (wherein B and B' are each an electron-attracting group; and Q and Q' are each a group capable of forming a vinyl group through the elimination with an alkali, provided the groups Q and Q' are each bonded at the $g(b)-position of the ethyl group).

Inventors:

UENO RYUZO (JP)
KITAYAMA MASAYA (JP)
MINAMI KENJI (JP)
KITTAKA MASAHARU (JP)

Application Number:

PCT/JP1998/005755

Publication Date:

July 08, 1999

Filing Date:

December 21, 1998

Export Citation:

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Assignee:

UENO SEIYAKU OYO KENKYUJO KK (JP)
UENO RYUZO (JP)
KITAYAMA MASAYA (JP)
MINAMI KENJI (JP)
KITTAKA MASAHARU (JP)

International Classes:

C09B62/51; (IPC1-7): C09B62/51

Domestic Patent References:

WO1998016587A1

1998-04-23

Foreign References:

JPS63309559A	1988-12-16
JPS56120770A	1981-09-22

Other References: