DE275897C - - Google Patents
Info
- Publication number
- DE275897C DE275897C DENDAT275897D DE275897DA DE275897C DE 275897 C DE275897 C DE 275897C DE NDAT275897 D DENDAT275897 D DE NDAT275897D DE 275897D A DE275897D A DE 275897DA DE 275897 C DE275897 C DE 275897C
- Authority
- DE
- Germany
- Prior art keywords
- dioxynaphthalene
- phthaleins
- preparation
- phthalic anhydride
- condensing agent
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
- LGRFSURHDFAFJT-UHFFFAOYSA-N Phthalic anhydride Chemical compound C1=CC=C2C(=O)OC(=O)C2=C1 LGRFSURHDFAFJT-UHFFFAOYSA-N 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 150000002790 naphthalenes Chemical class 0.000 claims 1
- 238000006467 substitution reaction Methods 0.000 claims 1
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
- C09B11/00—Diaryl- or thriarylmethane dyes
- C09B11/04—Diaryl- or thriarylmethane dyes derived from triarylmethanes, i.e. central C-atom is substituted by amino, cyano, alkyl
- C09B11/06—Hydroxy derivatives of triarylmethanes in which at least one OH group is bound to an aryl nucleus and their ethers or esters
- C09B11/08—Phthaleins; Phenolphthaleins; Fluorescein
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Furan Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Indole Compounds (AREA)
Description
6ERLIN. GEDRUCKT IN DER REICHSDRUCKEREt.
Claims (1)
- Patent-Anspruch:Verfahren zur Darstellung von Phtaleinen der Naphtalinreihe, darin bestehend, daß man 1 · 6-Dioxynaphtalin mit Phtalsäureanhydrid oder dessen Substitutionsprodukten mit oder ohne Kondensationsmittel erhitzt.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE275897C true DE275897C (de) |
Family
ID=532147
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT275897D Active DE275897C (de) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE275897C (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1232295B (de) * | 1959-05-06 | 1967-01-12 | Heinz Baumann | Verfahren zum Herstellen von Farbstoffen |
-
0
- DE DENDAT275897D patent/DE275897C/de active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1232295B (de) * | 1959-05-06 | 1967-01-12 | Heinz Baumann | Verfahren zum Herstellen von Farbstoffen |
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