TW267183B - Tri-azo black dyes - Google Patents

Tri-azo black dyes

Info

Publication number
TW267183B
TW267183B TW83107833A TW83107833A TW267183B TW 267183 B TW267183 B TW 267183B TW 83107833 A TW83107833 A TW 83107833A TW 83107833 A TW83107833 A TW 83107833A TW 267183 B TW267183 B TW 267183B
Authority
TW
Taiwan
Prior art keywords
tri
black dyes
azo black
azo
hydroxyl group
Prior art date
Application number
TW83107833A
Other languages
Chinese (zh)
Inventor
Ren-Fang Lin
Ming-Mey Yeh
Original Assignee
Everlight Chem Ind Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Everlight Chem Ind Corp filed Critical Everlight Chem Ind Corp
Priority to TW83107833A priority Critical patent/TW267183B/en
Application granted granted Critical
Publication of TW267183B publication Critical patent/TW267183B/en

Links

Landscapes

  • Inks, Pencil-Leads, Or Crayons (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)

Abstract

A tri-azo black dye with the following formula (I) (see claim 1) where R1 represents hydrogen, amino group or hydroxyl group; R2 represents hydroxyl group or amino group.
TW83107833A 1994-08-26 1994-08-26 Tri-azo black dyes TW267183B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
TW83107833A TW267183B (en) 1994-08-26 1994-08-26 Tri-azo black dyes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
TW83107833A TW267183B (en) 1994-08-26 1994-08-26 Tri-azo black dyes

Publications (1)

Publication Number Publication Date
TW267183B true TW267183B (en) 1996-01-01

Family

ID=51396797

Family Applications (1)

Application Number Title Priority Date Filing Date
TW83107833A TW267183B (en) 1994-08-26 1994-08-26 Tri-azo black dyes

Country Status (1)

Country Link
TW (1) TW267183B (en)

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