GB1106397A - Process for producing alpha crystal phase 6,13-dihydroquinacridone - Google Patents

Process for producing alpha crystal phase 6,13-dihydroquinacridone

Info

Publication number
GB1106397A
GB1106397A GB3682266A GB3682266A GB1106397A GB 1106397 A GB1106397 A GB 1106397A GB 3682266 A GB3682266 A GB 3682266A GB 3682266 A GB3682266 A GB 3682266A GB 1106397 A GB1106397 A GB 1106397A
Authority
GB
United Kingdom
Prior art keywords
dihydroquinacridone
crystal phase
producing alpha
alpha crystal
under
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.)
Expired
Application number
GB3682266A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tekkosha Co Ltd
Original Assignee
Tekkosha Co Ltd
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 Tekkosha Co Ltd filed Critical Tekkosha Co Ltd
Publication of GB1106397A publication Critical patent/GB1106397A/en
Expired legal-status Critical Current

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
    • C09B48/00—Quinacridones

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

a -Crystal phase 6,13-dihydroquinacridone is produced by heating to 200 DEG C. or above a dialkyl 2,5-dianilino-3,6-dihydroterephthalate under a high pressure in the substantial absence of oxygen and in the presence of an inert aromatic hydrocarbon boiling in the range 80 DEG to 210 DEG C. and separating the resultant a -crystal phase 6,13-dihydroquinacridone from the hydrocarbon. The heating preferably takes place at 200 DEG to 300 DEG C. under 8 to 55 kg./cm.2 pressure. Suitable aromatic hydrocarbons are benzene, toluene, xylene, hemimellitine, pseudocumene, mesitylene, isodurene, ethylbenzene and propylbenzene.
GB3682266A 1965-10-04 1966-08-17 Process for producing alpha crystal phase 6,13-dihydroquinacridone Expired GB1106397A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6029465 1965-10-04

Publications (1)

Publication Number Publication Date
GB1106397A true GB1106397A (en) 1968-03-13

Family

ID=13137981

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3682266A Expired GB1106397A (en) 1965-10-04 1966-08-17 Process for producing alpha crystal phase 6,13-dihydroquinacridone

Country Status (3)

Country Link
DE (1) DE1569853A1 (en)
FR (1) FR1605065A (en)
GB (1) GB1106397A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5610306A (en) * 1993-11-19 1997-03-11 Toyo Ink Manufacturing Co., Ltd. Process for the production of 6,13-dihydroquinacridones and apparatus for use for the production

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5610306A (en) * 1993-11-19 1997-03-11 Toyo Ink Manufacturing Co., Ltd. Process for the production of 6,13-dihydroquinacridones and apparatus for use for the production

Also Published As

Publication number Publication date
FR1605065A (en) 1973-01-12
DE1569853A1 (en) 1970-05-06

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