GB1349582A - Process for oxidation of dihydroquinacridones to quinacridones - Google Patents

Process for oxidation of dihydroquinacridones to quinacridones

Info

Publication number
GB1349582A
GB1349582A GB4688471A GB4688471A GB1349582A GB 1349582 A GB1349582 A GB 1349582A GB 4688471 A GB4688471 A GB 4688471A GB 4688471 A GB4688471 A GB 4688471A GB 1349582 A GB1349582 A GB 1349582A
Authority
GB
United Kingdom
Prior art keywords
quinacridones
sulphonic acid
anthraquinone
slurry
dihydroquinacridone
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
GB4688471A
Other languages
English (en)
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of GB1349582A publication Critical patent/GB1349582A/en
Expired legal-status Critical Current

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
    • C09B48/00Quinacridones

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Catalysts (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
GB4688471A 1970-10-08 1971-10-08 Process for oxidation of dihydroquinacridones to quinacridones Expired GB1349582A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US7925470A 1970-10-08 1970-10-08

Publications (1)

Publication Number Publication Date
GB1349582A true GB1349582A (en) 1974-04-03

Family

ID=22149389

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4688471A Expired GB1349582A (en) 1970-10-08 1971-10-08 Process for oxidation of dihydroquinacridones to quinacridones

Country Status (4)

Country Link
US (1) US3738988A (enExample)
JP (1) JPS551315B1 (enExample)
DE (1) DE2149684A1 (enExample)
GB (1) GB1349582A (enExample)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3873548A (en) * 1971-05-06 1975-03-25 Du Pont 2,9-Dicarboxyquinacridone and methods for its production
DE2642638A1 (de) * 1975-09-25 1977-04-07 Du Pont Verfahren zur herstellung von chinacridonpigmenten
JPS52111923A (en) * 1976-03-16 1977-09-20 Toyo Soda Mfg Co Ltd Production of quinozolone derivative
US4247696A (en) * 1978-04-01 1981-01-27 Toyo Soda Manufacturing Co., Ltd. Process for preparing gamma phase quinacridone
US4197404A (en) * 1978-05-08 1980-04-08 E. I. Du Pont De Nemours And Company Preparation of γ-quinacridone pigment
JPS6062048A (ja) * 1983-09-16 1985-04-10 Seiko Instr & Electronics Ltd 電子線マクロアナライザ
JPS6068541A (ja) * 1983-09-21 1985-04-19 Toyota Central Res & Dev Lab Inc 擬似動態画像の撮影方法
DE3605976A1 (de) * 1986-02-25 1987-08-27 Bayer Ag Verfahren zur herstellung von 6,13-dihydrochinacridonen und chinacridonen
DE3834748A1 (de) * 1988-10-12 1990-04-19 Bayer Ag Verfahren zur herstellung eines gegebenenfalls substituierten chinacridons
US5286863A (en) * 1991-08-22 1994-02-15 Ciba-Geigy Corporation Oxidation process for preparing quinacridone pigments
JP3055365B2 (ja) * 1993-06-30 2000-06-26 東洋インキ製造株式会社 2,5−ジ(アリールアミノ)−3,6−ジヒドロテレフタル酸ジアルキルエステル類の製造法およびこれを中間体とするキナクリドン類の製造法
JPH07242836A (ja) * 1993-11-19 1995-09-19 Toyo Ink Mfg Co Ltd 6,13−ジヒドロキナクリドン類の製造方法およびこれを中間体とするキナクリドン類の製造方法
US5491235A (en) * 1994-05-06 1996-02-13 Bayer Corporation Process for the preparation of organic pigments
US5502192A (en) * 1994-08-08 1996-03-26 Ciba-Geigy Corporation Process for the preparation of quinacridones from dihydroquinacridones in an aqueous medium
US5496405A (en) * 1994-12-06 1996-03-05 Bayer Corporation Process for the preparation of organic pigments
DE69614058T2 (de) * 1995-09-22 2002-03-21 Ciba Speciality Chemicals Holding Inc., Basel Verfahren zur Herstellung von Chinacridonen
EP0829523B1 (en) * 1996-08-16 2001-09-12 Ciba SC Holding AG Oxidation process for preparing quinacridone pigments
US6313300B1 (en) 1999-09-07 2001-11-06 Ciba Specialty Chemicals Corp. Oxidation process for preparing quinacridone pigments

Also Published As

Publication number Publication date
JPS551315B1 (enExample) 1980-01-12
US3738988A (en) 1973-06-12
DE2149684A1 (de) 1972-04-13

Similar Documents

Publication Publication Date Title
GB1446971A (en) Stabilised hydrogen peroxide
GB1473480A (en) Tripeptides and their production
GB1380229A (en) Process for preparing omega-nitrocarboxylates
GB1181055A (en) Stabilized Lead Chromate Pigments
GB1199309A (en) Improvements in/or relating to Processes for Manufacturing Manganese Dioxide, in particular for Electrochemical Cells, and the Manganese Dioxide Thus Obtained
GB1333405A (en) Production of magnetic iron oxides and recording members containing the same
JPS52156844A (en) Preparation of 8-amino-1-naphthol-3,6-disulfonic acid
GB1479581A (en) Method for producing alkali metal gold sulphites
GB1462013A (en) Process for the preparation of trimethylbenzoquinone
GB1491648A (en) Production of synthetic fluorspar
GB1165309A (en) Process for the preparation of Higher Aliphatic Alcohols
GB1514807A (en) Process for preparing sulphur dioxide
GB1458775A (en) Method of preparing 1-methyl-3-phenyl-indane
GB1463779A (en) Process for the preparation of 1-aminoanthraquinone
JPS5210226A (en) Process for preparation of aromatic hydroxy compound
GB1334707A (en) Process for the manufacture of anthraquinone compounds
FR2018308A1 (enExample)
GB1212126A (en) A METHOD OF MANUFACTURING gamma-Fe2O3 PARTICLES
GB1276774A (en) Process for the preparation of isocyanates
GB1250299A (enExample)
GB1198433A (en) Process for Producing a Peroxy Compound
JPS52151117A (en) Preparation of dicarboxylic acids
GB1325633A (en) Cyclopentanediones
GB1320334A (en) Separation of metals
GB1369409A (en) Process for the manufacture of 1-nitro-anthraquinone

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee