CH210743A - Process for the production of magnesium phthalocyanine. - Google Patents
Process for the production of magnesium phthalocyanine.Info
- Publication number
- CH210743A CH210743A CH210743DA CH210743A CH 210743 A CH210743 A CH 210743A CH 210743D A CH210743D A CH 210743DA CH 210743 A CH210743 A CH 210743A
- Authority
- CH
- Switzerland
- Prior art keywords
- magnesium
- production
- dicyandiamide
- magnesium phthalocyanine
- phthalocyanine
- Prior art date
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
- C09B47/00—Porphines; Azaporphines
- C09B47/04—Phthalocyanines abbreviation: Pc
- C09B47/06—Preparation from carboxylic acids or derivatives thereof, e.g. anhydrides, amides, mononitriles, phthalimide, o-cyanobenzamide
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Zusatzpatent zum Hauptpatent Nr. 207346. Verfahren zur Herstellung von Magnesiumphthalocyanin. Im Hauptpatent ist ein Verfahren zur Herstellung von Kupferphthalocyanin be schrieben, bei welchem man Phthalsäure oder deren Anhydrid mit Kupfer oder kup ferabgebenden Stoffen in Gegenwart von Dicyandiamid erhitzt.
Nach dem Zusatzpatent Nr. 208879 wird analog Kupferphthalocyanin erhalten, wenn man Phthalsäure durch Phthalimid ersetzt.
Es wurde nun gefunden, dass man eben falls Magnesiumphthalocyanin herstellen kann, wenn man Phthalimid mit Magnesium oder Magnesium abgebenden Stoffen in Ge genwart von Dicyaridiamid erhitzt.
Das Verfahren kann wie das Verfahren des Hauptpatentes durchgeführt werden. Man kann auch ein gewisses Quantum Para- toluolsulfamid und Stoffe, die das Schmel zen und die Kondensation begünstigen, wie zum Beispiel Paratoluolsulfochlorid, hinzu fügen. Die erhaltenen Rohprodukte lassen sich leicht reinigen, zum Beispiel durch Warm extraktion mit verdünnter Salzsäure und darauf mit verdünnter Natronlauge.
<I>Beispiel:</I> 100 g Phthalimid, 80 g Dicyandiamid und 15g Magnesiumogyd werden in einem eisernen, mit starkem Rührer versehenen, offenen Gefäss gemischt und langsam auf zirka 240-260' C erhitzt, bis die Farb- stoffbildung nicht mehr zunimmt. Die an fänglich flüssige Masse wird immer dick flüssiger und zuletzt fest.
Nach erfolgter Abkühlung wird die Masse aus dem Appa rat herausgenommen, gemahlen und mit ver dünnter Salzsäure und anschliessend mit ver dünnter Natronlauge kochend extrahiert. Man erhält eine gute Ausbeute an blau grünlichem Farbstoff.
Wenn man ihn in 10-15 Teilen Schwefelsäure löst und all mählich Wasser bis zu einer Säurekonzen- tration von 78% zufügt, so scheidet das Pigment als Sulfat aus, welches nach Fil trieren auf einem Porzellanfilter und even tuellem Waschen mit Schwefelsäure von <B>50'</B> Be sieh mit Wasser zu schönen Kristal len mit metallischem Glanz und in chemisch reinem Zustand hydrolysiert.
Additional patent to main patent no. 207346. Process for the production of magnesium phthalocyanine. In the main patent, a process for the production of copper phthalocyanine is described in which phthalic acid or its anhydride is heated with copper or copper-releasing substances in the presence of dicyandiamide.
According to additional patent no. 208879, copper phthalocyanine is obtained analogously if phthalic acid is replaced by phthalimide.
It has now been found that magnesium phthalocyanine can also be produced if phthalimide is heated with magnesium or magnesium-releasing substances in the presence of dicyaridiamide.
The method can be carried out like the method of the main patent. You can also add a certain amount of paratoluene sulphamide and substances that promote melting and condensation, such as paratoluene sulphonyl chloride. The raw products obtained can be easily cleaned, for example by warm extraction with dilute hydrochloric acid and then with dilute sodium hydroxide solution.
<I> Example: </I> 100 g of phthalimide, 80 g of dicyandiamide and 15g of magnesium oxide are mixed in an iron, open vessel equipped with a strong stirrer and slowly heated to around 240-260 ° C until the dye no longer forms increases. The initially liquid mass becomes thicker and more liquid and finally solid.
After cooling, the mass is removed from the apparatus, ground and extracted at the boil with dilute hydrochloric acid and then with dilute sodium hydroxide solution. A good yield of blue-greenish dye is obtained.
If you dissolve it in 10-15 parts of sulfuric acid and gradually add water up to an acid concentration of 78%, the pigment separates out as sulfate, which after filtering on a porcelain filter and possibly washing with sulfuric acid from <B> 50 '</B> Be treated with water to form beautiful crystals with a metallic sheen and hydrolyzed in a chemically pure state.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT207346X | 1937-07-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH210743A true CH210743A (en) | 1940-07-31 |
Family
ID=11171235
Family Applications (5)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH208879D CH208879A (en) | 1937-07-03 | 1937-08-26 | Process for the production of copper phthalocyanine. |
CH207346D CH207346A (en) | 1937-07-03 | 1937-08-26 | Process for the production of copper phthalocyanine. |
CH208880D CH208880A (en) | 1937-07-03 | 1937-08-26 | Process for the production of copper phthalocyanine. |
CH210742D CH210742A (en) | 1937-07-03 | 1937-08-26 | Process for the production of nickel phthalocyanine. |
CH210743D CH210743A (en) | 1937-07-03 | 1937-08-26 | Process for the production of magnesium phthalocyanine. |
Family Applications Before (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH208879D CH208879A (en) | 1937-07-03 | 1937-08-26 | Process for the production of copper phthalocyanine. |
CH207346D CH207346A (en) | 1937-07-03 | 1937-08-26 | Process for the production of copper phthalocyanine. |
CH208880D CH208880A (en) | 1937-07-03 | 1937-08-26 | Process for the production of copper phthalocyanine. |
CH210742D CH210742A (en) | 1937-07-03 | 1937-08-26 | Process for the production of nickel phthalocyanine. |
Country Status (4)
Country | Link |
---|---|
BE (1) | BE423293A (en) |
CH (5) | CH208879A (en) |
FR (1) | FR826017A (en) |
GB (1) | GB503029A (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2657139A1 (en) * | 1976-12-16 | 1978-06-22 | Bayer Ag | PROCESS FOR THE PRODUCTION OF COPPER PHTHALOCYANINE |
TW325476B (en) * | 1995-06-21 | 1998-01-21 | Kawasaki Kasei Chemicals | Method for producing copper phthalocyanine |
US8318005B2 (en) | 2006-12-22 | 2012-11-27 | Dow Global Technologies Llc | Tetra-sulfo iron-phthalocyanine and related methods |
-
1937
- 1937-08-25 BE BE423293D patent/BE423293A/xx unknown
- 1937-08-26 CH CH208879D patent/CH208879A/en unknown
- 1937-08-26 FR FR826017D patent/FR826017A/en not_active Expired
- 1937-08-26 CH CH207346D patent/CH207346A/en unknown
- 1937-08-26 CH CH208880D patent/CH208880A/en unknown
- 1937-08-26 CH CH210742D patent/CH210742A/en unknown
- 1937-08-26 CH CH210743D patent/CH210743A/en unknown
- 1937-10-11 GB GB27584/37A patent/GB503029A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR826017A (en) | 1938-03-21 |
BE423293A (en) | 1937-09-30 |
CH207346A (en) | 1939-10-31 |
CH210742A (en) | 1940-07-31 |
GB503029A (en) | 1939-03-30 |
CH208880A (en) | 1940-02-29 |
CH208879A (en) | 1940-02-29 |
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