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
Application number
Other languages
German (de)
Inventor
Montecatini Societa G Agricola
Original Assignee
Montedison Spa
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 Montedison Spa filed Critical Montedison Spa
Publication of CH210743A publication Critical patent/CH210743A/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B47/00Porphines; Azaporphines
    • C09B47/04Phthalocyanines abbreviation: Pc
    • C09B47/06Preparation 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)

PATENTANSPRUCH: Verfahren zur Herstellung von Magne- siumphthalocyanin, dadurch gekennzeich net, dass man Phthalimid mit Magnesium oder Magnesium abgebenden Stoffen in Ge genwart von Dicyandiamid erhitzt. UNTERANSPRÜCHE: 1. Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass die Reaktion in Ge- genwart einer Mischung von Dicyandia- mid und Paratoluolsulfamid stattfindet. 2. Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man Stoffe hinzu fügt, die das Schmelzen und die Konden sation begünstigen. 3. PATENT CLAIM: Process for the production of magnesium phthalocyanine, characterized in that phthalimide is heated with magnesium or magnesium releasing substances in the presence of dicyandiamide. SUBClaims: 1. Method according to patent claim, characterized in that the reaction takes place in the presence of a mixture of dicyandiamide and paratoluenesulfamide. 2. The method according to claim, characterized in that substances are added that favor melting and condensation. 3. Verfahren nach Patentanspruch und Un teranspruch 2, dadurch gekennzeichnet, dass man Paratoluolsulfochlorid hinzu fügt. 4. Verfahren nach Patentanspruch und Un teransprüchen 1, 2 und 3, dadurch ge kennzeichnet, dass man die gewonnenen Produkte durch saure und alkalische Ex traktion reinigt. Process according to claim and claim 2, characterized in that paratoluene sulfochloride is added. 4. The method according to claim and un subclaims 1, 2 and 3, characterized in that the products obtained are purified by acidic and alkaline extraction.
CH210743D 1937-07-03 1937-08-26 Process for the production of magnesium phthalocyanine. CH210743A (en)

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)

* Cited by examiner, † Cited by third party
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

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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