AT290696B - Process for the preparation of new 5,7,5 ', 7'-tetrahalogen-8,8'-dihydroxynaphthazines - Google Patents

Process for the preparation of new 5,7,5 ', 7'-tetrahalogen-8,8'-dihydroxynaphthazines

Info

Publication number
AT290696B
AT290696B AT889269A AT889269A AT290696B AT 290696 B AT290696 B AT 290696B AT 889269 A AT889269 A AT 889269A AT 889269 A AT889269 A AT 889269A AT 290696 B AT290696 B AT 290696B
Authority
AT
Austria
Prior art keywords
dihydroxynaphthazines
tetrahalogen
preparation
new
Prior art date
Application number
AT889269A
Other languages
German (de)
Original Assignee
Bayer Ag
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 Bayer Ag filed Critical Bayer Ag
Application granted granted Critical
Publication of AT290696B publication Critical patent/AT290696B/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B67/00—Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
    • C09B67/0033—Blends of pigments; Mixtured crystals; Solid solutions

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)
AT889269A 1969-07-09 1969-09-19 Process for the preparation of new 5,7,5 ', 7'-tetrahalogen-8,8'-dihydroxynaphthazines AT290696B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691934781 DE1934781A1 (en) 1969-07-09 1969-07-09 Tetrahalogenated 8,8'-dihydroxynaphthazines

Publications (1)

Publication Number Publication Date
AT290696B true AT290696B (en) 1971-06-11

Family

ID=5739301

Family Applications (1)

Application Number Title Priority Date Filing Date
AT889269A AT290696B (en) 1969-07-09 1969-09-19 Process for the preparation of new 5,7,5 ', 7'-tetrahalogen-8,8'-dihydroxynaphthazines

Country Status (2)

Country Link
AT (1) AT290696B (en)
DE (1) DE1934781A1 (en)

Also Published As

Publication number Publication date
DE1934781A1 (en) 1971-02-18

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Legal Events

Date Code Title Description
ELJ Ceased due to non-payment of the annual fee